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Removed Lua 5.3.3 and extracted Lua 5.4.0

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This commit is contained in:
Walter Schell 2020-06-30 08:43:48 -04:00
parent 722505a73d
commit 61292c5d3a
100 changed files with 17661 additions and 11764 deletions
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10
README.md
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@ -1,7 +1,9 @@
# Lua # Lua
CMake based build of Lua 5.3.3 CMake based build of Lua 5.4.0
# Usage # Usage
Inside of CMakeLists.txt Inside of CMakeLists.txt
`add_subdirectory(lua)` ```cmake
`.....` add_subdirectory(lua)
`target_link_libraries(<YOURTARGET> lua_static)` ...
target_link_libraries(<YOURTARGET> lua_static)
```

43
lua-5.3.3/CMakeLists.txt
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set(LUA_LIB_SRCS
${CMAKE_CURRENT_SOURCE_DIR}/src/lapi.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lcode.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lctype.c
${CMAKE_CURRENT_SOURCE_DIR}/src/ldebug.c
${CMAKE_CURRENT_SOURCE_DIR}/src/ldo.c
${CMAKE_CURRENT_SOURCE_DIR}/src/ldump.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lfunc.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lgc.c
${CMAKE_CURRENT_SOURCE_DIR}/src/llex.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lmem.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lobject.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lopcodes.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lparser.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lstate.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lstring.c
${CMAKE_CURRENT_SOURCE_DIR}/src/ltable.c
${CMAKE_CURRENT_SOURCE_DIR}/src/ltm.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lundump.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lvm.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lzio.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lauxlib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lbaselib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lbitlib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lcorolib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/ldblib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/liolib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lmathlib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/loslib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lstrlib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/ltablib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/lutf8lib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/loadlib.c
${CMAKE_CURRENT_SOURCE_DIR}/src/linit.c
${CMAKE_CURRENT_SOURCE_DIR}/src/luac.c)
set(LUA_LIB_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/src)
add_library(lua_static STATIC ${LUA_LIB_SRCS})
target_include_directories(lua_static PUBLIC ${LUA_LIB_INCLUDE})
set(LUA_DEFINITIONS LUA_USE_POSIX)
if(EMSCRIPTEN)
unset(LUA_DEFINITIONS)
endif()
target_compile_definitions(lua_static PUBLIC ${LUA_DEFINITIONS})

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111
lua-5.3.3/doc/lua.1
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.TH LUA 1 "$Date: 2014/12/10 15:55:45 $"
.SH NAME
lua \- Lua interpreter
.SH SYNOPSIS
.B lua
[
.I options
]
[
.I script
[
.I args
]
]
.SH DESCRIPTION
.B lua
is the standalone Lua interpreter.
It loads and executes Lua programs,
either in textual source form or
in precompiled binary form.
(Precompiled binaries are output by
.BR luac ,
the Lua compiler.)
.B lua
can be used as a batch interpreter and also interactively.
.LP
The given
.I options
are handled in order and then
the Lua program in file
.I script
is loaded and executed.
The given
.I args
are available to
.I script
as strings in a global table named
.BR arg .
If no options or arguments are given,
then
.B "\-v \-i"
is assumed when the standard input is a terminal;
otherwise,
.B "\-"
is assumed.
.LP
In interactive mode,
.B lua
prompts the user,
reads lines from the standard input,
and executes them as they are read.
If the line contains an expression or list of expressions,
then the line is evaluated and the results are printed.
If a line does not contain a complete statement,
then a secondary prompt is displayed and
lines are read until a complete statement is formed or
a syntax error is found.
.LP
At the very start,
before even handling the command line,
.B lua
checks the contents of the environment variables
.B LUA_INIT_5_3
or
.BR LUA_INIT ,
in that order.
If the contents is of the form
.RI '@ filename ',
then
.I filename
is executed.
Otherwise, the string is assumed to be a Lua statement and is executed.
.SH OPTIONS
.TP
.BI \-e " stat"
execute statement
.IR stat .
.TP
.B \-i
enter interactive mode after executing
.IR script .
.TP
.BI \-l " name"
execute the equivalent of
.IB name =require(' name ')
before executing
.IR script .
.TP
.B \-v
show version information.
.TP
.B \-E
ignore environment variables.
.TP
.B \-\-
stop handling options.
.TP
.B \-
stop handling options and execute the standard input as a file.
.SH "SEE ALSO"
.BR luac (1)
.br
The documentation at lua.org,
especially section 7 of the reference manual.
.SH DIAGNOSTICS
Error messages should be self explanatory.
.SH AUTHORS
R. Ierusalimschy,
L. H. de Figueiredo,
W. Celes
.\" EOF

24
lua-5.3.3/src/lapi.h
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/*
** $Id: lapi.h,v 2.9 2015/03/06 19:49:50 roberto Exp $
** Auxiliary functions from Lua API
** See Copyright Notice in lua.h
*/
#ifndef lapi_h
#define lapi_h
#include "llimits.h"
#include "lstate.h"
#define api_incr_top(L) {L->top++; api_check(L, L->top <= L->ci->top, \
"stack overflow");}
#define adjustresults(L,nres) \
{ if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; }
#define api_checknelems(L,n) api_check(L, (n) < (L->top - L->ci->func), \
"not enough elements in the stack")
#endif

233
lua-5.3.3/src/lbitlib.c
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/*
** $Id: lbitlib.c,v 1.30 2015/11/11 19:08:09 roberto Exp $
** Standard library for bitwise operations
** See Copyright Notice in lua.h
*/
#define lbitlib_c
#define LUA_LIB
#include "lprefix.h"
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#if defined(LUA_COMPAT_BITLIB) /* { */
#define pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n))
#define checkunsigned(L,i) ((lua_Unsigned)luaL_checkinteger(L,i))
/* number of bits to consider in a number */
#if !defined(LUA_NBITS)
#define LUA_NBITS 32
#endif
/*
** a lua_Unsigned with its first LUA_NBITS bits equal to 1. (Shift must
** be made in two parts to avoid problems when LUA_NBITS is equal to the
** number of bits in a lua_Unsigned.)
*/
#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1))
/* macro to trim extra bits */
#define trim(x) ((x) & ALLONES)
/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */
#define mask(n) (~((ALLONES << 1) << ((n) - 1)))
static lua_Unsigned andaux (lua_State *L) {
int i, n = lua_gettop(L);
lua_Unsigned r = ~(lua_Unsigned)0;
for (i = 1; i <= n; i++)
r &= checkunsigned(L, i);
return trim(r);
}
static int b_and (lua_State *L) {
lua_Unsigned r = andaux(L);
pushunsigned(L, r);
return 1;
}
static int b_test (lua_State *L) {
lua_Unsigned r = andaux(L);
lua_pushboolean(L, r != 0);
return 1;
}
static int b_or (lua_State *L) {
int i, n = lua_gettop(L);
lua_Unsigned r = 0;
for (i = 1; i <= n; i++)
r |= checkunsigned(L, i);
pushunsigned(L, trim(r));
return 1;
}
static int b_xor (lua_State *L) {
int i, n = lua_gettop(L);
lua_Unsigned r = 0;
for (i = 1; i <= n; i++)
r ^= checkunsigned(L, i);
pushunsigned(L, trim(r));
return 1;
}
static int b_not (lua_State *L) {
lua_Unsigned r = ~checkunsigned(L, 1);
pushunsigned(L, trim(r));
return 1;
}
static int b_shift (lua_State *L, lua_Unsigned r, lua_Integer i) {
if (i < 0) { /* shift right? */
i = -i;
r = trim(r);
if (i >= LUA_NBITS) r = 0;
else r >>= i;
}
else { /* shift left */
if (i >= LUA_NBITS) r = 0;
else r <<= i;
r = trim(r);
}
pushunsigned(L, r);
return 1;
}
static int b_lshift (lua_State *L) {
return b_shift(L, checkunsigned(L, 1), luaL_checkinteger(L, 2));
}
static int b_rshift (lua_State *L) {
return b_shift(L, checkunsigned(L, 1), -luaL_checkinteger(L, 2));
}
static int b_arshift (lua_State *L) {
lua_Unsigned r = checkunsigned(L, 1);
lua_Integer i = luaL_checkinteger(L, 2);
if (i < 0 || !(r & ((lua_Unsigned)1 << (LUA_NBITS - 1))))
return b_shift(L, r, -i);
else { /* arithmetic shift for 'negative' number */
if (i >= LUA_NBITS) r = ALLONES;
else
r = trim((r >> i) | ~(trim(~(lua_Unsigned)0) >> i)); /* add signal bit */
pushunsigned(L, r);
return 1;
}
}
static int b_rot (lua_State *L, lua_Integer d) {
lua_Unsigned r = checkunsigned(L, 1);
int i = d & (LUA_NBITS - 1); /* i = d % NBITS */
r = trim(r);
if (i != 0) /* avoid undefined shift of LUA_NBITS when i == 0 */
r = (r << i) | (r >> (LUA_NBITS - i));
pushunsigned(L, trim(r));
return 1;
}
static int b_lrot (lua_State *L) {
return b_rot(L, luaL_checkinteger(L, 2));
}
static int b_rrot (lua_State *L) {
return b_rot(L, -luaL_checkinteger(L, 2));
}
/*
** get field and width arguments for field-manipulation functions,
** checking whether they are valid.
** ('luaL_error' called without 'return' to avoid later warnings about
** 'width' being used uninitialized.)
*/
static int fieldargs (lua_State *L, int farg, int *width) {
lua_Integer f = luaL_checkinteger(L, farg);
lua_Integer w = luaL_optinteger(L, farg + 1, 1);
luaL_argcheck(L, 0 <= f, farg, "field cannot be negative");
luaL_argcheck(L, 0 < w, farg + 1, "width must be positive");
if (f + w > LUA_NBITS)
luaL_error(L, "trying to access non-existent bits");
*width = (int)w;
return (int)f;
}
static int b_extract (lua_State *L) {
int w;
lua_Unsigned r = trim(checkunsigned(L, 1));
int f = fieldargs(L, 2, &w);
r = (r >> f) & mask(w);
pushunsigned(L, r);
return 1;
}
static int b_replace (lua_State *L) {
int w;
lua_Unsigned r = trim(checkunsigned(L, 1));
lua_Unsigned v = trim(checkunsigned(L, 2));
int f = fieldargs(L, 3, &w);
lua_Unsigned m = mask(w);
r = (r & ~(m << f)) | ((v & m) << f);
pushunsigned(L, r);
return 1;
}
static const luaL_Reg bitlib[] = {
{"arshift", b_arshift},
{"band", b_and},
{"bnot", b_not},
{"bor", b_or},
{"bxor", b_xor},
{"btest", b_test},
{"extract", b_extract},
{"lrotate", b_lrot},
{"lshift", b_lshift},
{"replace", b_replace},
{"rrotate", b_rrot},
{"rshift", b_rshift},
{NULL, NULL}
};
LUAMOD_API int luaopen_bit32 (lua_State *L) {
luaL_newlib(L, bitlib);
return 1;
}
#else /* }{ */
LUAMOD_API int luaopen_bit32 (lua_State *L) {
return luaL_error(L, "library 'bit32' has been deprecated");
}
#endif /* } */

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lua-5.3.3/src/lcode.c
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215
lua-5.3.3/src/ldump.c
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/*
** $Id: ldump.c,v 2.37 2015/10/08 15:53:49 roberto Exp $
** save precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#define ldump_c
#define LUA_CORE
#include "lprefix.h"
#include <stddef.h>
#include "lua.h"
#include "lobject.h"
#include "lstate.h"
#include "lundump.h"
typedef struct {
lua_State *L;
lua_Writer writer;
void *data;
int strip;
int status;
} DumpState;
/*
** All high-level dumps go through DumpVector; you can change it to
** change the endianness of the result
*/
#define DumpVector(v,n,D) DumpBlock(v,(n)*sizeof((v)[0]),D)
#define DumpLiteral(s,D) DumpBlock(s, sizeof(s) - sizeof(char), D)
static void DumpBlock (const void *b, size_t size, DumpState *D) {
if (D->status == 0 && size > 0) {
lua_unlock(D->L);
D->status = (*D->writer)(D->L, b, size, D->data);
lua_lock(D->L);
}
}
#define DumpVar(x,D) DumpVector(&x,1,D)
static void DumpByte (int y, DumpState *D) {
lu_byte x = (lu_byte)y;
DumpVar(x, D);
}
static void DumpInt (int x, DumpState *D) {
DumpVar(x, D);
}
static void DumpNumber (lua_Number x, DumpState *D) {
DumpVar(x, D);
}
static void DumpInteger (lua_Integer x, DumpState *D) {
DumpVar(x, D);
}
static void DumpString (const TString *s, DumpState *D) {
if (s == NULL)
DumpByte(0, D);
else {
size_t size = tsslen(s) + 1; /* include trailing '\0' */
const char *str = getstr(s);
if (size < 0xFF)
DumpByte(cast_int(size), D);
else {
DumpByte(0xFF, D);
DumpVar(size, D);
}
DumpVector(str, size - 1, D); /* no need to save '\0' */
}
}
static void DumpCode (const Proto *f, DumpState *D) {
DumpInt(f->sizecode, D);
DumpVector(f->code, f->sizecode, D);
}
static void DumpFunction(const Proto *f, TString *psource, DumpState *D);
static void DumpConstants (const Proto *f, DumpState *D) {
int i;
int n = f->sizek;
DumpInt(n, D);
for (i = 0; i < n; i++) {
const TValue *o = &f->k[i];
DumpByte(ttype(o), D);
switch (ttype(o)) {
case LUA_TNIL:
break;
case LUA_TBOOLEAN:
DumpByte(bvalue(o), D);
break;
case LUA_TNUMFLT:
DumpNumber(fltvalue(o), D);
break;
case LUA_TNUMINT:
DumpInteger(ivalue(o), D);
break;
case LUA_TSHRSTR:
case LUA_TLNGSTR:
DumpString(tsvalue(o), D);
break;
default:
lua_assert(0);
}
}
}
static void DumpProtos (const Proto *f, DumpState *D) {
int i;
int n = f->sizep;
DumpInt(n, D);
for (i = 0; i < n; i++)
DumpFunction(f->p[i], f->source, D);
}
static void DumpUpvalues (const Proto *f, DumpState *D) {
int i, n = f->sizeupvalues;
DumpInt(n, D);
for (i = 0; i < n; i++) {
DumpByte(f->upvalues[i].instack, D);
DumpByte(f->upvalues[i].idx, D);
}
}
static void DumpDebug (const Proto *f, DumpState *D) {
int i, n;
n = (D->strip) ? 0 : f->sizelineinfo;
DumpInt(n, D);
DumpVector(f->lineinfo, n, D);
n = (D->strip) ? 0 : f->sizelocvars;
DumpInt(n, D);
for (i = 0; i < n; i++) {
DumpString(f->locvars[i].varname, D);
DumpInt(f->locvars[i].startpc, D);
DumpInt(f->locvars[i].endpc, D);
}
n = (D->strip) ? 0 : f->sizeupvalues;
DumpInt(n, D);
for (i = 0; i < n; i++)
DumpString(f->upvalues[i].name, D);
}
static void DumpFunction (const Proto *f, TString *psource, DumpState *D) {
if (D->strip || f->source == psource)
DumpString(NULL, D); /* no debug info or same source as its parent */
else
DumpString(f->source, D);
DumpInt(f->linedefined, D);
DumpInt(f->lastlinedefined, D);
DumpByte(f->numparams, D);
DumpByte(f->is_vararg, D);
DumpByte(f->maxstacksize, D);
DumpCode(f, D);
DumpConstants(f, D);
DumpUpvalues(f, D);
DumpProtos(f, D);
DumpDebug(f, D);
}
static void DumpHeader (DumpState *D) {
DumpLiteral(LUA_SIGNATURE, D);
DumpByte(LUAC_VERSION, D);
DumpByte(LUAC_FORMAT, D);
DumpLiteral(LUAC_DATA, D);
DumpByte(sizeof(int), D);
DumpByte(sizeof(size_t), D);
DumpByte(sizeof(Instruction), D);
DumpByte(sizeof(lua_Integer), D);
DumpByte(sizeof(lua_Number), D);
DumpInteger(LUAC_INT, D);
DumpNumber(LUAC_NUM, D);
}
/*
** dump Lua function as precompiled chunk
*/
int luaU_dump(lua_State *L, const Proto *f, lua_Writer w, void *data,
int strip) {
DumpState D;
D.L = L;
D.writer = w;
D.data = data;
D.strip = strip;
D.status = 0;
DumpHeader(&D);
DumpByte(f->sizeupvalues, &D);
DumpFunction(f, NULL, &D);
return D.status;
}

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lua-5.3.3/src/lfunc.c
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/*
** $Id: lfunc.c,v 2.45 2014/11/02 19:19:04 roberto Exp $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#define lfunc_c
#define LUA_CORE
#include "lprefix.h"
#include <stddef.h>
#include "lua.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
CClosure *luaF_newCclosure (lua_State *L, int n) {
GCObject *o = luaC_newobj(L, LUA_TCCL, sizeCclosure(n));
CClosure *c = gco2ccl(o);
c->nupvalues = cast_byte(n);
return c;
}
LClosure *luaF_newLclosure (lua_State *L, int n) {
GCObject *o = luaC_newobj(L, LUA_TLCL, sizeLclosure(n));
LClosure *c = gco2lcl(o);
c->p = NULL;
c->nupvalues = cast_byte(n);
while (n--) c->upvals[n] = NULL;
return c;
}
/*
** fill a closure with new closed upvalues
*/
void luaF_initupvals (lua_State *L, LClosure *cl) {
int i;
for (i = 0; i < cl->nupvalues; i++) {
UpVal *uv = luaM_new(L, UpVal);
uv->refcount = 1;
uv->v = &uv->u.value; /* make it closed */
setnilvalue(uv->v);
cl->upvals[i] = uv;
}
}
UpVal *luaF_findupval (lua_State *L, StkId level) {
UpVal **pp = &L->openupval;
UpVal *p;
UpVal *uv;
lua_assert(isintwups(L) || L->openupval == NULL);
while (*pp != NULL && (p = *pp)->v >= level) {
lua_assert(upisopen(p));
if (p->v == level) /* found a corresponding upvalue? */
return p; /* return it */
pp = &p->u.open.next;
}
/* not found: create a new upvalue */
uv = luaM_new(L, UpVal);
uv->refcount = 0;
uv->u.open.next = *pp; /* link it to list of open upvalues */
uv->u.open.touched = 1;
*pp = uv;
uv->v = level; /* current value lives in the stack */
if (!isintwups(L)) { /* thread not in list of threads with upvalues? */
L->twups = G(L)->twups; /* link it to the list */
G(L)->twups = L;
}
return uv;
}
void luaF_close (lua_State *L, StkId level) {
UpVal *uv;
while (L->openupval != NULL && (uv = L->openupval)->v >= level) {
lua_assert(upisopen(uv));
L->openupval = uv->u.open.next; /* remove from 'open' list */
if (uv->refcount == 0) /* no references? */
luaM_free(L, uv); /* free upvalue */
else {
setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */
uv->v = &uv->u.value; /* now current value lives here */
luaC_upvalbarrier(L, uv);
}
}
}
Proto *luaF_newproto (lua_State *L) {
GCObject *o = luaC_newobj(L, LUA_TPROTO, sizeof(Proto));
Proto *f = gco2p(o);
f->k = NULL;
f->sizek = 0;
f->p = NULL;
f->sizep = 0;
f->code = NULL;
f->cache = NULL;
f->sizecode = 0;
f->lineinfo = NULL;
f->sizelineinfo = 0;
f->upvalues = NULL;
f->sizeupvalues = 0;
f->numparams = 0;
f->is_vararg = 0;
f->maxstacksize = 0;
f->locvars = NULL;
f->sizelocvars = 0;
f->linedefined = 0;
f->lastlinedefined = 0;
f->source = NULL;
return f;
}
void luaF_freeproto (lua_State *L, Proto *f) {
luaM_freearray(L, f->code, f->sizecode);
luaM_freearray(L, f->p, f->sizep);
luaM_freearray(L, f->k, f->sizek);
luaM_freearray(L, f->lineinfo, f->sizelineinfo);
luaM_freearray(L, f->locvars, f->sizelocvars);
luaM_freearray(L, f->upvalues, f->sizeupvalues);
luaM_free(L, f);
}
/*
** Look for n-th local variable at line 'line' in function 'func'.
** Returns NULL if not found.
*/
const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
int i;
for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
if (pc < f->locvars[i].endpc) { /* is variable active? */
local_number--;
if (local_number == 0)
return getstr(f->locvars[i].varname);
}
}
return NULL; /* not found */
}

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lua-5.3.3/src/lfunc.h
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/*
** $Id: lfunc.h,v 2.15 2015/01/13 15:49:11 roberto Exp $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#ifndef lfunc_h
#define lfunc_h
#include "lobject.h"
#define sizeCclosure(n) (cast(int, sizeof(CClosure)) + \
cast(int, sizeof(TValue)*((n)-1)))
#define sizeLclosure(n) (cast(int, sizeof(LClosure)) + \
cast(int, sizeof(TValue *)*((n)-1)))
/* test whether thread is in 'twups' list */
#define isintwups(L) (L->twups != L)
/*
** maximum number of upvalues in a closure (both C and Lua). (Value
** must fit in a VM register.)
*/
#define MAXUPVAL 255
/*
** Upvalues for Lua closures
*/
struct UpVal {
TValue *v; /* points to stack or to its own value */
lu_mem refcount; /* reference counter */
union {
struct { /* (when open) */
UpVal *next; /* linked list */
int touched; /* mark to avoid cycles with dead threads */
} open;
TValue value; /* the value (when closed) */
} u;
};
#define upisopen(up) ((up)->v != &(up)->u.value)
LUAI_FUNC Proto *luaF_newproto (lua_State *L);
LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nelems);
LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nelems);
LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);
LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
LUAI_FUNC void luaF_close (lua_State *L, StkId level);
LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
int pc);
#endif

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/*
** $Id: lmathlib.c,v 1.117 2015/10/02 15:39:23 roberto Exp $
** Standard mathematical library
** See Copyright Notice in lua.h
*/
#define lmathlib_c
#define LUA_LIB
#include "lprefix.h"
#include <stdlib.h>
#include <math.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#undef PI
#define PI (l_mathop(3.141592653589793238462643383279502884))
#if !defined(l_rand) /* { */
#if defined(LUA_USE_POSIX)
#define l_rand() random()
#define l_srand(x) srandom(x)
#define L_RANDMAX 2147483647 /* (2^31 - 1), following POSIX */
#else
#define l_rand() rand()
#define l_srand(x) srand(x)
#define L_RANDMAX RAND_MAX
#endif
#endif /* } */
static int math_abs (lua_State *L) {
if (lua_isinteger(L, 1)) {
lua_Integer n = lua_tointeger(L, 1);
if (n < 0) n = (lua_Integer)(0u - (lua_Unsigned)n);
lua_pushinteger(L, n);
}
else
lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sin (lua_State *L) {
lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_cos (lua_State *L) {
lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tan (lua_State *L) {
lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
return 1;
}
static int math_asin (lua_State *L) {
lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_acos (lua_State *L) {
lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_atan (lua_State *L) {
lua_Number y = luaL_checknumber(L, 1);
lua_Number x = luaL_optnumber(L, 2, 1);
lua_pushnumber(L, l_mathop(atan2)(y, x));
return 1;
}
static int math_toint (lua_State *L) {
int valid;
lua_Integer n = lua_tointegerx(L, 1, &valid);
if (valid)
lua_pushinteger(L, n);
else {
luaL_checkany(L, 1);
lua_pushnil(L); /* value is not convertible to integer */
}
return 1;
}
static void pushnumint (lua_State *L, lua_Number d) {
lua_Integer n;
if (lua_numbertointeger(d, &n)) /* does 'd' fit in an integer? */
lua_pushinteger(L, n); /* result is integer */
else
lua_pushnumber(L, d); /* result is float */
}
static int math_floor (lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own floor */
else {
lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_ceil (lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own ceil */
else {
lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_fmod (lua_State *L) {
if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) {
lua_Integer d = lua_tointeger(L, 2);
if ((lua_Unsigned)d + 1u <= 1u) { /* special cases: -1 or 0 */
luaL_argcheck(L, d != 0, 2, "zero");
lua_pushinteger(L, 0); /* avoid overflow with 0x80000... / -1 */
}
else
lua_pushinteger(L, lua_tointeger(L, 1) % d);
}
else
lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
luaL_checknumber(L, 2)));
return 1;
}
/*
** next function does not use 'modf', avoiding problems with 'double*'
** (which is not compatible with 'float*') when lua_Number is not
** 'double'.
*/
static int math_modf (lua_State *L) {
if (lua_isinteger(L ,1)) {
lua_settop(L, 1); /* number is its own integer part */
lua_pushnumber(L, 0); /* no fractional part */
}
else {
lua_Number n = luaL_checknumber(L, 1);
/* integer part (rounds toward zero) */
lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n);
pushnumint(L, ip);
/* fractional part (test needed for inf/-inf) */
lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip));
}
return 2;
}
static int math_sqrt (lua_State *L) {
lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
return 1;
}
static int math_ult (lua_State *L) {
lua_Integer a = luaL_checkinteger(L, 1);
lua_Integer b = luaL_checkinteger(L, 2);
lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b);
return 1;
}
static int math_log (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number res;
if (lua_isnoneornil(L, 2))
res = l_mathop(log)(x);
else {
lua_Number base = luaL_checknumber(L, 2);
#if !defined(LUA_USE_C89)
if (base == 2.0) res = l_mathop(log2)(x); else
#endif
if (base == 10.0) res = l_mathop(log10)(x);
else res = l_mathop(log)(x)/l_mathop(log)(base);
}
lua_pushnumber(L, res);
return 1;
}
static int math_exp (lua_State *L) {
lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
return 1;
}
static int math_deg (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI));
return 1;
}
static int math_rad (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0)));
return 1;
}
static int math_min (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imin = 1; /* index of current minimum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, i, imin, LUA_OPLT))
imin = i;
}
lua_pushvalue(L, imin);
return 1;
}
static int math_max (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imax = 1; /* index of current maximum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, imax, i, LUA_OPLT))
imax = i;
}
lua_pushvalue(L, imax);
return 1;
}
/*
** This function uses 'double' (instead of 'lua_Number') to ensure that
** all bits from 'l_rand' can be represented, and that 'RANDMAX + 1.0'
** will keep full precision (ensuring that 'r' is always less than 1.0.)
*/
static int math_random (lua_State *L) {
lua_Integer low, up;
double r = (double)l_rand() * (1.0 / ((double)L_RANDMAX + 1.0));
switch (lua_gettop(L)) { /* check number of arguments */
case 0: { /* no arguments */
lua_pushnumber(L, (lua_Number)r); /* Number between 0 and 1 */
return 1;
}
case 1: { /* only upper limit */
low = 1;
up = luaL_checkinteger(L, 1);
break;
}
case 2: { /* lower and upper limits */
low = luaL_checkinteger(L, 1);
up = luaL_checkinteger(L, 2);
break;
}
default: return luaL_error(L, "wrong number of arguments");
}
/* random integer in the interval [low, up] */
luaL_argcheck(L, low <= up, 1, "interval is empty");
luaL_argcheck(L, low >= 0 || up <= LUA_MAXINTEGER + low, 1,
"interval too large");
r *= (double)(up - low) + 1.0;
lua_pushinteger(L, (lua_Integer)r + low);
return 1;
}
static int math_randomseed (lua_State *L) {
l_srand((unsigned int)(lua_Integer)luaL_checknumber(L, 1));
(void)l_rand(); /* discard first value to avoid undesirable correlations */
return 0;
}
static int math_type (lua_State *L) {
if (lua_type(L, 1) == LUA_TNUMBER) {
if (lua_isinteger(L, 1))
lua_pushliteral(L, "integer");
else
lua_pushliteral(L, "float");
}
else {
luaL_checkany(L, 1);
lua_pushnil(L);
}
return 1;
}
/*
** {==================================================================
** Deprecated functions (for compatibility only)
** ===================================================================
*/
#if defined(LUA_COMPAT_MATHLIB)
static int math_cosh (lua_State *L) {
lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sinh (lua_State *L) {
lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tanh (lua_State *L) {
lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_pow (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number y = luaL_checknumber(L, 2);
lua_pushnumber(L, l_mathop(pow)(x, y));
return 1;
}
static int math_frexp (lua_State *L) {
int e;
lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
lua_pushinteger(L, e);
return 2;
}
static int math_ldexp (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
int ep = (int)luaL_checkinteger(L, 2);
lua_pushnumber(L, l_mathop(ldexp)(x, ep));
return 1;
}
static int math_log10 (lua_State *L) {
lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
return 1;
}
#endif
/* }================================================================== */
static const luaL_Reg mathlib[] = {
{"abs", math_abs},
{"acos", math_acos},
{"asin", math_asin},
{"atan", math_atan},
{"ceil", math_ceil},
{"cos", math_cos},
{"deg", math_deg},
{"exp", math_exp},
{"tointeger", math_toint},
{"floor", math_floor},
{"fmod", math_fmod},
{"ult", math_ult},
{"log", math_log},
{"max", math_max},
{"min", math_min},
{"modf", math_modf},
{"rad", math_rad},
{"random", math_random},
{"randomseed", math_randomseed},
{"sin", math_sin},
{"sqrt", math_sqrt},
{"tan", math_tan},
{"type", math_type},
#if defined(LUA_COMPAT_MATHLIB)
{"atan2", math_atan},
{"cosh", math_cosh},
{"sinh", math_sinh},
{"tanh", math_tanh},
{"pow", math_pow},
{"frexp", math_frexp},
{"ldexp", math_ldexp},
{"log10", math_log10},
#endif
/* placeholders */
{"pi", NULL},
{"huge", NULL},
{"maxinteger", NULL},
{"mininteger", NULL},
{NULL, NULL}
};
/*
** Open math library
*/
LUAMOD_API int luaopen_math (lua_State *L) {
luaL_newlib(L, mathlib);
lua_pushnumber(L, PI);
lua_setfield(L, -2, "pi");
lua_pushnumber(L, (lua_Number)HUGE_VAL);
lua_setfield(L, -2, "huge");
lua_pushinteger(L, LUA_MAXINTEGER);
lua_setfield(L, -2, "maxinteger");
lua_pushinteger(L, LUA_MININTEGER);
lua_setfield(L, -2, "mininteger");
return 1;
}

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@ -1,100 +0,0 @@
/*
** $Id: lmem.c,v 1.91 2015/03/06 19:45:54 roberto Exp $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#define lmem_c
#define LUA_CORE
#include "lprefix.h"
#include <stddef.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
/*
** About the realloc function:
** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
** ('osize' is the old size, 'nsize' is the new size)
**
** * frealloc(ud, NULL, x, s) creates a new block of size 's' (no
** matter 'x').
**
** * frealloc(ud, p, x, 0) frees the block 'p'
** (in this specific case, frealloc must return NULL);
** particularly, frealloc(ud, NULL, 0, 0) does nothing
** (which is equivalent to free(NULL) in ISO C)
**
** frealloc returns NULL if it cannot create or reallocate the area
** (any reallocation to an equal or smaller size cannot fail!)
*/
#define MINSIZEARRAY 4
void *luaM_growaux_ (lua_State *L, void *block, int *size, size_t size_elems,
int limit, const char *what) {
void *newblock;
int newsize;
if (*size >= limit/2) { /* cannot double it? */
if (*size >= limit) /* cannot grow even a little? */
luaG_runerror(L, "too many %s (limit is %d)", what, limit);
newsize = limit; /* still have at least one free place */
}
else {
newsize = (*size)*2;
if (newsize < MINSIZEARRAY)
newsize = MINSIZEARRAY; /* minimum size */
}
newblock = luaM_reallocv(L, block, *size, newsize, size_elems);
*size = newsize; /* update only when everything else is OK */
return newblock;
}
l_noret luaM_toobig (lua_State *L) {
luaG_runerror(L, "memory allocation error: block too big");
}
/*
** generic allocation routine.
*/
void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
void *newblock;
global_State *g = G(L);
size_t realosize = (block) ? osize : 0;
lua_assert((realosize == 0) == (block == NULL));
#if defined(HARDMEMTESTS)
if (nsize > realosize && g->gcrunning)
luaC_fullgc(L, 1); /* force a GC whenever possible */
#endif
newblock = (*g->frealloc)(g->ud, block, osize, nsize);
if (newblock == NULL && nsize > 0) {
lua_assert(nsize > realosize); /* cannot fail when shrinking a block */
if (g->version) { /* is state fully built? */
luaC_fullgc(L, 1); /* try to free some memory... */
newblock = (*g->frealloc)(g->ud, block, osize, nsize); /* try again */
}
if (newblock == NULL)
luaD_throw(L, LUA_ERRMEM);
}
lua_assert((nsize == 0) == (newblock == NULL));
g->GCdebt = (g->GCdebt + nsize) - realosize;
return newblock;
}

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/*
** $Id: lmem.h,v 1.43 2014/12/19 17:26:14 roberto Exp $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#ifndef lmem_h
#define lmem_h
#include <stddef.h>
#include "llimits.h"
#include "lua.h"
/*
** This macro reallocs a vector 'b' from 'on' to 'n' elements, where
** each element has size 'e'. In case of arithmetic overflow of the
** product 'n'*'e', it raises an error (calling 'luaM_toobig'). Because
** 'e' is always constant, it avoids the runtime division MAX_SIZET/(e).
**
** (The macro is somewhat complex to avoid warnings: The 'sizeof'
** comparison avoids a runtime comparison when overflow cannot occur.
** The compiler should be able to optimize the real test by itself, but
** when it does it, it may give a warning about "comparison is always
** false due to limited range of data type"; the +1 tricks the compiler,
** avoiding this warning but also this optimization.)
*/
#define luaM_reallocv(L,b,on,n,e) \
(((sizeof(n) >= sizeof(size_t) && cast(size_t, (n)) + 1 > MAX_SIZET/(e)) \
? luaM_toobig(L) : cast_void(0)) , \
luaM_realloc_(L, (b), (on)*(e), (n)*(e)))
/*
** Arrays of chars do not need any test
*/
#define luaM_reallocvchar(L,b,on,n) \
cast(char *, luaM_realloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char)))
#define luaM_freemem(L, b, s) luaM_realloc_(L, (b), (s), 0)
#define luaM_free(L, b) luaM_realloc_(L, (b), sizeof(*(b)), 0)
#define luaM_freearray(L, b, n) luaM_realloc_(L, (b), (n)*sizeof(*(b)), 0)
#define luaM_malloc(L,s) luaM_realloc_(L, NULL, 0, (s))
#define luaM_new(L,t) cast(t *, luaM_malloc(L, sizeof(t)))
#define luaM_newvector(L,n,t) \
cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
#define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s))
#define luaM_growvector(L,v,nelems,size,t,limit,e) \
if ((nelems)+1 > (size)) \
((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
#define luaM_reallocvector(L, v,oldn,n,t) \
((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
LUAI_FUNC l_noret luaM_toobig (lua_State *L);
/* not to be called directly */
LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
size_t size_elem, int limit,
const char *what);
#endif

549
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@ -1,549 +0,0 @@
/*
** $Id: lobject.h,v 2.116 2015/11/03 18:33:10 roberto Exp $
** Type definitions for Lua objects
** See Copyright Notice in lua.h
*/
#ifndef lobject_h
#define lobject_h
#include <stdarg.h>
#include "llimits.h"
#include "lua.h"
/*
** Extra tags for non-values
*/
#define LUA_TPROTO LUA_NUMTAGS /* function prototypes */
#define LUA_TDEADKEY (LUA_NUMTAGS+1) /* removed keys in tables */
/*
** number of all possible tags (including LUA_TNONE but excluding DEADKEY)
*/
#define LUA_TOTALTAGS (LUA_TPROTO + 2)
/*
** tags for Tagged Values have the following use of bits:
** bits 0-3: actual tag (a LUA_T* value)
** bits 4-5: variant bits
** bit 6: whether value is collectable
*/
/*
** LUA_TFUNCTION variants:
** 0 - Lua function
** 1 - light C function
** 2 - regular C function (closure)
*/
/* Variant tags for functions */
#define LUA_TLCL (LUA_TFUNCTION | (0 << 4)) /* Lua closure */
#define LUA_TLCF (LUA_TFUNCTION | (1 << 4)) /* light C function */
#define LUA_TCCL (LUA_TFUNCTION | (2 << 4)) /* C closure */
/* Variant tags for strings */
#define LUA_TSHRSTR (LUA_TSTRING | (0 << 4)) /* short strings */
#define LUA_TLNGSTR (LUA_TSTRING | (1 << 4)) /* long strings */
/* Variant tags for numbers */
#define LUA_TNUMFLT (LUA_TNUMBER | (0 << 4)) /* float numbers */
#define LUA_TNUMINT (LUA_TNUMBER | (1 << 4)) /* integer numbers */
/* Bit mark for collectable types */
#define BIT_ISCOLLECTABLE (1 << 6)
/* mark a tag as collectable */
#define ctb(t) ((t) | BIT_ISCOLLECTABLE)
/*
** Common type for all collectable objects
*/
typedef struct GCObject GCObject;
/*
** Common Header for all collectable objects (in macro form, to be
** included in other objects)
*/
#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked
/*
** Common type has only the common header
*/
struct GCObject {
CommonHeader;
};
/*
** Tagged Values. This is the basic representation of values in Lua,
** an actual value plus a tag with its type.
*/
/*
** Union of all Lua values
*/
typedef union Value {
GCObject *gc; /* collectable objects */
void *p; /* light userdata */
int b; /* booleans */
lua_CFunction f; /* light C functions */
lua_Integer i; /* integer numbers */
lua_Number n; /* float numbers */
} Value;
#define TValuefields Value value_; int tt_
typedef struct lua_TValue {
TValuefields;
} TValue;
/* macro defining a nil value */
#define NILCONSTANT {NULL}, LUA_TNIL
#define val_(o) ((o)->value_)
/* raw type tag of a TValue */
#define rttype(o) ((o)->tt_)
/* tag with no variants (bits 0-3) */
#define novariant(x) ((x) & 0x0F)
/* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */
#define ttype(o) (rttype(o) & 0x3F)
/* type tag of a TValue with no variants (bits 0-3) */
#define ttnov(o) (novariant(rttype(o)))
/* Macros to test type */
#define checktag(o,t) (rttype(o) == (t))
#define checktype(o,t) (ttnov(o) == (t))
#define ttisnumber(o) checktype((o), LUA_TNUMBER)
#define ttisfloat(o) checktag((o), LUA_TNUMFLT)
#define ttisinteger(o) checktag((o), LUA_TNUMINT)
#define ttisnil(o) checktag((o), LUA_TNIL)
#define ttisboolean(o) checktag((o), LUA_TBOOLEAN)
#define ttislightuserdata(o) checktag((o), LUA_TLIGHTUSERDATA)
#define ttisstring(o) checktype((o), LUA_TSTRING)
#define ttisshrstring(o) checktag((o), ctb(LUA_TSHRSTR))
#define ttislngstring(o) checktag((o), ctb(LUA_TLNGSTR))
#define ttistable(o) checktag((o), ctb(LUA_TTABLE))
#define ttisfunction(o) checktype(o, LUA_TFUNCTION)
#define ttisclosure(o) ((rttype(o) & 0x1F) == LUA_TFUNCTION)
#define ttisCclosure(o) checktag((o), ctb(LUA_TCCL))
#define ttisLclosure(o) checktag((o), ctb(LUA_TLCL))
#define ttislcf(o) checktag((o), LUA_TLCF)
#define ttisfulluserdata(o) checktag((o), ctb(LUA_TUSERDATA))
#define ttisthread(o) checktag((o), ctb(LUA_TTHREAD))
#define ttisdeadkey(o) checktag((o), LUA_TDEADKEY)
/* Macros to access values */
#define ivalue(o) check_exp(ttisinteger(o), val_(o).i)
#define fltvalue(o) check_exp(ttisfloat(o), val_(o).n)
#define nvalue(o) check_exp(ttisnumber(o), \
(ttisinteger(o) ? cast_num(ivalue(o)) : fltvalue(o)))
#define gcvalue(o) check_exp(iscollectable(o), val_(o).gc)
#define pvalue(o) check_exp(ttislightuserdata(o), val_(o).p)
#define tsvalue(o) check_exp(ttisstring(o), gco2ts(val_(o).gc))
#define uvalue(o) check_exp(ttisfulluserdata(o), gco2u(val_(o).gc))
#define clvalue(o) check_exp(ttisclosure(o), gco2cl(val_(o).gc))
#define clLvalue(o) check_exp(ttisLclosure(o), gco2lcl(val_(o).gc))
#define clCvalue(o) check_exp(ttisCclosure(o), gco2ccl(val_(o).gc))
#define fvalue(o) check_exp(ttislcf(o), val_(o).f)
#define hvalue(o) check_exp(ttistable(o), gco2t(val_(o).gc))
#define bvalue(o) check_exp(ttisboolean(o), val_(o).b)
#define thvalue(o) check_exp(ttisthread(o), gco2th(val_(o).gc))
/* a dead value may get the 'gc' field, but cannot access its contents */
#define deadvalue(o) check_exp(ttisdeadkey(o), cast(void *, val_(o).gc))
#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0))
#define iscollectable(o) (rttype(o) & BIT_ISCOLLECTABLE)
/* Macros for internal tests */
#define righttt(obj) (ttype(obj) == gcvalue(obj)->tt)
#define checkliveness(L,obj) \
lua_longassert(!iscollectable(obj) || \
(righttt(obj) && (L == NULL || !isdead(G(L),gcvalue(obj)))))
/* Macros to set values */
#define settt_(o,t) ((o)->tt_=(t))
#define setfltvalue(obj,x) \
{ TValue *io=(obj); val_(io).n=(x); settt_(io, LUA_TNUMFLT); }
#define chgfltvalue(obj,x) \
{ TValue *io=(obj); lua_assert(ttisfloat(io)); val_(io).n=(x); }
#define setivalue(obj,x) \
{ TValue *io=(obj); val_(io).i=(x); settt_(io, LUA_TNUMINT); }
#define chgivalue(obj,x) \
{ TValue *io=(obj); lua_assert(ttisinteger(io)); val_(io).i=(x); }
#define setnilvalue(obj) settt_(obj, LUA_TNIL)
#define setfvalue(obj,x) \
{ TValue *io=(obj); val_(io).f=(x); settt_(io, LUA_TLCF); }
#define setpvalue(obj,x) \
{ TValue *io=(obj); val_(io).p=(x); settt_(io, LUA_TLIGHTUSERDATA); }
#define setbvalue(obj,x) \
{ TValue *io=(obj); val_(io).b=(x); settt_(io, LUA_TBOOLEAN); }
#define setgcovalue(L,obj,x) \
{ TValue *io = (obj); GCObject *i_g=(x); \
val_(io).gc = i_g; settt_(io, ctb(i_g->tt)); }
#define setsvalue(L,obj,x) \
{ TValue *io = (obj); TString *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(x_->tt)); \
checkliveness(L,io); }
#define setuvalue(L,obj,x) \
{ TValue *io = (obj); Udata *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TUSERDATA)); \
checkliveness(L,io); }
#define setthvalue(L,obj,x) \
{ TValue *io = (obj); lua_State *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTHREAD)); \
checkliveness(L,io); }
#define setclLvalue(L,obj,x) \
{ TValue *io = (obj); LClosure *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TLCL)); \
checkliveness(L,io); }
#define setclCvalue(L,obj,x) \
{ TValue *io = (obj); CClosure *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TCCL)); \
checkliveness(L,io); }
#define sethvalue(L,obj,x) \
{ TValue *io = (obj); Table *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_TTABLE)); \
checkliveness(L,io); }
#define setdeadvalue(obj) settt_(obj, LUA_TDEADKEY)
#define setobj(L,obj1,obj2) \
{ TValue *io1=(obj1); *io1 = *(obj2); \
(void)L; checkliveness(L,io1); }
/*
** different types of assignments, according to destination
*/
/* from stack to (same) stack */
#define setobjs2s setobj
/* to stack (not from same stack) */
#define setobj2s setobj
#define setsvalue2s setsvalue
#define sethvalue2s sethvalue
#define setptvalue2s setptvalue
/* from table to same table */
#define setobjt2t setobj
/* to new object */
#define setobj2n setobj
#define setsvalue2n setsvalue
/* to table (define it as an expression to be used in macros) */
#define setobj2t(L,o1,o2) ((void)L, *(o1)=*(o2), checkliveness(L,(o1)))
/*
** {======================================================
** types and prototypes
** =======================================================
*/
typedef TValue *StkId; /* index to stack elements */
/*
** Header for string value; string bytes follow the end of this structure
** (aligned according to 'UTString'; see next).
*/
typedef struct TString {
CommonHeader;
lu_byte extra; /* reserved words for short strings; "has hash" for longs */
lu_byte shrlen; /* length for short strings */
unsigned int hash;
union {
size_t lnglen; /* length for long strings */
struct TString *hnext; /* linked list for hash table */
} u;
} TString;
/*
** Ensures that address after this type is always fully aligned.
*/
typedef union UTString {
L_Umaxalign dummy; /* ensures maximum alignment for strings */
TString tsv;
} UTString;
/*
** Get the actual string (array of bytes) from a 'TString'.
** (Access to 'extra' ensures that value is really a 'TString'.)
*/
#define getstr(ts) \
check_exp(sizeof((ts)->extra), cast(char *, (ts)) + sizeof(UTString))
/* get the actual string (array of bytes) from a Lua value */
#define svalue(o) getstr(tsvalue(o))
/* get string length from 'TString *s' */
#define tsslen(s) ((s)->tt == LUA_TSHRSTR ? (s)->shrlen : (s)->u.lnglen)
/* get string length from 'TValue *o' */
#define vslen(o) tsslen(tsvalue(o))
/*
** Header for userdata; memory area follows the end of this structure
** (aligned according to 'UUdata'; see next).
*/
typedef struct Udata {
CommonHeader;
lu_byte ttuv_; /* user value's tag */
struct Table *metatable;
size_t len; /* number of bytes */
union Value user_; /* user value */
} Udata;
/*
** Ensures that address after this type is always fully aligned.
*/
typedef union UUdata {
L_Umaxalign dummy; /* ensures maximum alignment for 'local' udata */
Udata uv;
} UUdata;
/*
** Get the address of memory block inside 'Udata'.
** (Access to 'ttuv_' ensures that value is really a 'Udata'.)
*/
#define getudatamem(u) \
check_exp(sizeof((u)->ttuv_), (cast(char*, (u)) + sizeof(UUdata)))
#define setuservalue(L,u,o) \
{ const TValue *io=(o); Udata *iu = (u); \
iu->user_ = io->value_; iu->ttuv_ = rttype(io); \
checkliveness(L,io); }
#define getuservalue(L,u,o) \
{ TValue *io=(o); const Udata *iu = (u); \
io->value_ = iu->user_; settt_(io, iu->ttuv_); \
checkliveness(L,io); }
/*
** Description of an upvalue for function prototypes
*/
typedef struct Upvaldesc {
TString *name; /* upvalue name (for debug information) */
lu_byte instack; /* whether it is in stack (register) */
lu_byte idx; /* index of upvalue (in stack or in outer function's list) */
} Upvaldesc;
/*
** Description of a local variable for function prototypes
** (used for debug information)
*/
typedef struct LocVar {
TString *varname;
int startpc; /* first point where variable is active */
int endpc; /* first point where variable is dead */
} LocVar;
/*
** Function Prototypes
*/
typedef struct Proto {
CommonHeader;
lu_byte numparams; /* number of fixed parameters */
lu_byte is_vararg; /* 2: declared vararg; 1: uses vararg */
lu_byte maxstacksize; /* number of registers needed by this function */
int sizeupvalues; /* size of 'upvalues' */
int sizek; /* size of 'k' */
int sizecode;
int sizelineinfo;
int sizep; /* size of 'p' */
int sizelocvars;
int linedefined; /* debug information */
int lastlinedefined; /* debug information */
TValue *k; /* constants used by the function */
Instruction *code; /* opcodes */
struct Proto **p; /* functions defined inside the function */
int *lineinfo; /* map from opcodes to source lines (debug information) */
LocVar *locvars; /* information about local variables (debug information) */
Upvaldesc *upvalues; /* upvalue information */
struct LClosure *cache; /* last-created closure with this prototype */
TString *source; /* used for debug information */
GCObject *gclist;
} Proto;
/*
** Lua Upvalues
*/
typedef struct UpVal UpVal;
/*
** Closures
*/
#define ClosureHeader \
CommonHeader; lu_byte nupvalues; GCObject *gclist
typedef struct CClosure {
ClosureHeader;
lua_CFunction f;
TValue upvalue[1]; /* list of upvalues */
} CClosure;
typedef struct LClosure {
ClosureHeader;
struct Proto *p;
UpVal *upvals[1]; /* list of upvalues */
} LClosure;
typedef union Closure {
CClosure c;
LClosure l;
} Closure;
#define isLfunction(o) ttisLclosure(o)
#define getproto(o) (clLvalue(o)->p)
/*
** Tables
*/
typedef union TKey {
struct {
TValuefields;
int next; /* for chaining (offset for next node) */
} nk;
TValue tvk;
} TKey;
/* copy a value into a key without messing up field 'next' */
#define setnodekey(L,key,obj) \
{ TKey *k_=(key); const TValue *io_=(obj); \
k_->nk.value_ = io_->value_; k_->nk.tt_ = io_->tt_; \
(void)L; checkliveness(L,io_); }
typedef struct Node {
TValue i_val;
TKey i_key;
} Node;
typedef struct Table {
CommonHeader;
lu_byte flags; /* 1<<p means tagmethod(p) is not present */
lu_byte lsizenode; /* log2 of size of 'node' array */
unsigned int sizearray; /* size of 'array' array */
TValue *array; /* array part */
Node *node;
Node *lastfree; /* any free position is before this position */
struct Table *metatable;
GCObject *gclist;
} Table;
/*
** 'module' operation for hashing (size is always a power of 2)
*/
#define lmod(s,size) \
(check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1)))))
#define twoto(x) (1<<(x))
#define sizenode(t) (twoto((t)->lsizenode))
/*
** (address of) a fixed nil value
*/
#define luaO_nilobject (&luaO_nilobject_)
LUAI_DDEC const TValue luaO_nilobject_;
/* size of buffer for 'luaO_utf8esc' function */
#define UTF8BUFFSZ 8
LUAI_FUNC int luaO_int2fb (unsigned int x);
LUAI_FUNC int luaO_fb2int (int x);
LUAI_FUNC int luaO_utf8esc (char *buff, unsigned long x);
LUAI_FUNC int luaO_ceillog2 (unsigned int x);
LUAI_FUNC void luaO_arith (lua_State *L, int op, const TValue *p1,
const TValue *p2, TValue *res);
LUAI_FUNC size_t luaO_str2num (const char *s, TValue *o);
LUAI_FUNC int luaO_hexavalue (int c);
LUAI_FUNC void luaO_tostring (lua_State *L, StkId obj);
LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
va_list argp);
LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len);
#endif

124
lua-5.3.3/src/lopcodes.c
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@ -1,124 +0,0 @@
/*
** $Id: lopcodes.c,v 1.55 2015/01/05 13:48:33 roberto Exp $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#define lopcodes_c
#define LUA_CORE
#include "lprefix.h"
#include <stddef.h>
#include "lopcodes.h"
/* ORDER OP */
LUAI_DDEF const char *const luaP_opnames[NUM_OPCODES+1] = {
"MOVE",
"LOADK",
"LOADKX",
"LOADBOOL",
"LOADNIL",
"GETUPVAL",
"GETTABUP",
"GETTABLE",
"SETTABUP",
"SETUPVAL",
"SETTABLE",
"NEWTABLE",
"SELF",
"ADD",
"SUB",
"MUL",
"MOD",
"POW",
"DIV",
"IDIV",
"BAND",
"BOR",
"BXOR",
"SHL",
"SHR",
"UNM",
"BNOT",
"NOT",
"LEN",
"CONCAT",
"JMP",
"EQ",
"LT",
"LE",
"TEST",
"TESTSET",
"CALL",
"TAILCALL",
"RETURN",
"FORLOOP",
"FORPREP",
"TFORCALL",
"TFORLOOP",
"SETLIST",
"CLOSURE",
"VARARG",
"EXTRAARG",
NULL
};
#define opmode(t,a,b,c,m) (((t)<<7) | ((a)<<6) | ((b)<<4) | ((c)<<2) | (m))
LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
/* T A B C mode opcode */
opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_MOVE */
,opmode(0, 1, OpArgK, OpArgN, iABx) /* OP_LOADK */
,opmode(0, 1, OpArgN, OpArgN, iABx) /* OP_LOADKX */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_LOADBOOL */
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_LOADNIL */
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_GETUPVAL */
,opmode(0, 1, OpArgU, OpArgK, iABC) /* OP_GETTABUP */
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_GETTABLE */
,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABUP */
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_SETUPVAL */
,opmode(0, 0, OpArgK, OpArgK, iABC) /* OP_SETTABLE */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_NEWTABLE */
,opmode(0, 1, OpArgR, OpArgK, iABC) /* OP_SELF */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_ADD */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SUB */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MUL */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_MOD */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_POW */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_DIV */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_IDIV */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BAND */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BOR */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_BXOR */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHL */
,opmode(0, 1, OpArgK, OpArgK, iABC) /* OP_SHR */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_UNM */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_BNOT */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_NOT */
,opmode(0, 1, OpArgR, OpArgN, iABC) /* OP_LEN */
,opmode(0, 1, OpArgR, OpArgR, iABC) /* OP_CONCAT */
,opmode(0, 0, OpArgR, OpArgN, iAsBx) /* OP_JMP */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_EQ */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LT */
,opmode(1, 0, OpArgK, OpArgK, iABC) /* OP_LE */
,opmode(1, 0, OpArgN, OpArgU, iABC) /* OP_TEST */
,opmode(1, 1, OpArgR, OpArgU, iABC) /* OP_TESTSET */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_CALL */
,opmode(0, 1, OpArgU, OpArgU, iABC) /* OP_TAILCALL */
,opmode(0, 0, OpArgU, OpArgN, iABC) /* OP_RETURN */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORLOOP */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_FORPREP */
,opmode(0, 0, OpArgN, OpArgU, iABC) /* OP_TFORCALL */
,opmode(0, 1, OpArgR, OpArgN, iAsBx) /* OP_TFORLOOP */
,opmode(0, 0, OpArgU, OpArgU, iABC) /* OP_SETLIST */
,opmode(0, 1, OpArgU, OpArgN, iABx) /* OP_CLOSURE */
,opmode(0, 1, OpArgU, OpArgN, iABC) /* OP_VARARG */
,opmode(0, 0, OpArgU, OpArgU, iAx) /* OP_EXTRAARG */
};

295
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@ -1,295 +0,0 @@
/*
** $Id: lopcodes.h,v 1.148 2014/10/25 11:50:46 roberto Exp $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lopcodes_h
#define lopcodes_h
#include "llimits.h"
/*===========================================================================
We assume that instructions are unsigned numbers.
All instructions have an opcode in the first 6 bits.
Instructions can have the following fields:
'A' : 8 bits
'B' : 9 bits
'C' : 9 bits
'Ax' : 26 bits ('A', 'B', and 'C' together)
'Bx' : 18 bits ('B' and 'C' together)
'sBx' : signed Bx
A signed argument is represented in excess K; that is, the number
value is the unsigned value minus K. K is exactly the maximum value
for that argument (so that -max is represented by 0, and +max is
represented by 2*max), which is half the maximum for the corresponding
unsigned argument.
===========================================================================*/
enum OpMode {iABC, iABx, iAsBx, iAx}; /* basic instruction format */
/*
** size and position of opcode arguments.
*/
#define SIZE_C 9
#define SIZE_B 9
#define SIZE_Bx (SIZE_C + SIZE_B)
#define SIZE_A 8
#define SIZE_Ax (SIZE_C + SIZE_B + SIZE_A)
#define SIZE_OP 6
#define POS_OP 0
#define POS_A (POS_OP + SIZE_OP)
#define POS_C (POS_A + SIZE_A)
#define POS_B (POS_C + SIZE_C)
#define POS_Bx POS_C
#define POS_Ax POS_A
/*
** limits for opcode arguments.
** we use (signed) int to manipulate most arguments,
** so they must fit in LUAI_BITSINT-1 bits (-1 for sign)
*/
#if SIZE_Bx < LUAI_BITSINT-1
#define MAXARG_Bx ((1<<SIZE_Bx)-1)
#define MAXARG_sBx (MAXARG_Bx>>1) /* 'sBx' is signed */
#else
#define MAXARG_Bx MAX_INT
#define MAXARG_sBx MAX_INT
#endif
#if SIZE_Ax < LUAI_BITSINT-1
#define MAXARG_Ax ((1<<SIZE_Ax)-1)
#else
#define MAXARG_Ax MAX_INT
#endif
#define MAXARG_A ((1<<SIZE_A)-1)
#define MAXARG_B ((1<<SIZE_B)-1)
#define MAXARG_C ((1<<SIZE_C)-1)
/* creates a mask with 'n' 1 bits at position 'p' */
#define MASK1(n,p) ((~((~(Instruction)0)<<(n)))<<(p))
/* creates a mask with 'n' 0 bits at position 'p' */
#define MASK0(n,p) (~MASK1(n,p))
/*
** the following macros help to manipulate instructions
*/
#define GET_OPCODE(i) (cast(OpCode, ((i)>>POS_OP) & MASK1(SIZE_OP,0)))
#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \
((cast(Instruction, o)<<POS_OP)&MASK1(SIZE_OP,POS_OP))))
#define getarg(i,pos,size) (cast(int, ((i)>>pos) & MASK1(size,0)))
#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \
((cast(Instruction, v)<<pos)&MASK1(size,pos))))
#define GETARG_A(i) getarg(i, POS_A, SIZE_A)
#define SETARG_A(i,v) setarg(i, v, POS_A, SIZE_A)
#define GETARG_B(i) getarg(i, POS_B, SIZE_B)
#define SETARG_B(i,v) setarg(i, v, POS_B, SIZE_B)
#define GETARG_C(i) getarg(i, POS_C, SIZE_C)
#define SETARG_C(i,v) setarg(i, v, POS_C, SIZE_C)
#define GETARG_Bx(i) getarg(i, POS_Bx, SIZE_Bx)
#define SETARG_Bx(i,v) setarg(i, v, POS_Bx, SIZE_Bx)
#define GETARG_Ax(i) getarg(i, POS_Ax, SIZE_Ax)
#define SETARG_Ax(i,v) setarg(i, v, POS_Ax, SIZE_Ax)
#define GETARG_sBx(i) (GETARG_Bx(i)-MAXARG_sBx)
#define SETARG_sBx(i,b) SETARG_Bx((i),cast(unsigned int, (b)+MAXARG_sBx))
#define CREATE_ABC(o,a,b,c) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, b)<<POS_B) \
| (cast(Instruction, c)<<POS_C))
#define CREATE_ABx(o,a,bc) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, bc)<<POS_Bx))
#define CREATE_Ax(o,a) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_Ax))
/*
** Macros to operate RK indices
*/
/* this bit 1 means constant (0 means register) */
#define BITRK (1 << (SIZE_B - 1))
/* test whether value is a constant */
#define ISK(x) ((x) & BITRK)
/* gets the index of the constant */
#define INDEXK(r) ((int)(r) & ~BITRK)
#define MAXINDEXRK (BITRK - 1)
/* code a constant index as a RK value */
#define RKASK(x) ((x) | BITRK)
/*
** invalid register that fits in 8 bits
*/
#define NO_REG MAXARG_A
/*
** R(x) - register
** Kst(x) - constant (in constant table)
** RK(x) == if ISK(x) then Kst(INDEXK(x)) else R(x)
*/
/*
** grep "ORDER OP" if you change these enums
*/
typedef enum {
/*----------------------------------------------------------------------
name args description
------------------------------------------------------------------------*/
OP_MOVE,/* A B R(A) := R(B) */
OP_LOADK,/* A Bx R(A) := Kst(Bx) */
OP_LOADKX,/* A R(A) := Kst(extra arg) */
OP_LOADBOOL,/* A B C R(A) := (Bool)B; if (C) pc++ */
OP_LOADNIL,/* A B R(A), R(A+1), ..., R(A+B) := nil */
OP_GETUPVAL,/* A B R(A) := UpValue[B] */
OP_GETTABUP,/* A B C R(A) := UpValue[B][RK(C)] */
OP_GETTABLE,/* A B C R(A) := R(B)[RK(C)] */
OP_SETTABUP,/* A B C UpValue[A][RK(B)] := RK(C) */
OP_SETUPVAL,/* A B UpValue[B] := R(A) */
OP_SETTABLE,/* A B C R(A)[RK(B)] := RK(C) */
OP_NEWTABLE,/* A B C R(A) := {} (size = B,C) */
OP_SELF,/* A B C R(A+1) := R(B); R(A) := R(B)[RK(C)] */
OP_ADD,/* A B C R(A) := RK(B) + RK(C) */
OP_SUB,/* A B C R(A) := RK(B) - RK(C) */
OP_MUL,/* A B C R(A) := RK(B) * RK(C) */
OP_MOD,/* A B C R(A) := RK(B) % RK(C) */
OP_POW,/* A B C R(A) := RK(B) ^ RK(C) */
OP_DIV,/* A B C R(A) := RK(B) / RK(C) */
OP_IDIV,/* A B C R(A) := RK(B) // RK(C) */
OP_BAND,/* A B C R(A) := RK(B) & RK(C) */
OP_BOR,/* A B C R(A) := RK(B) | RK(C) */
OP_BXOR,/* A B C R(A) := RK(B) ~ RK(C) */
OP_SHL,/* A B C R(A) := RK(B) << RK(C) */
OP_SHR,/* A B C R(A) := RK(B) >> RK(C) */
OP_UNM,/* A B R(A) := -R(B) */
OP_BNOT,/* A B R(A) := ~R(B) */
OP_NOT,/* A B R(A) := not R(B) */
OP_LEN,/* A B R(A) := length of R(B) */
OP_CONCAT,/* A B C R(A) := R(B).. ... ..R(C) */
OP_JMP,/* A sBx pc+=sBx; if (A) close all upvalues >= R(A - 1) */
OP_EQ,/* A B C if ((RK(B) == RK(C)) ~= A) then pc++ */
OP_LT,/* A B C if ((RK(B) < RK(C)) ~= A) then pc++ */
OP_LE,/* A B C if ((RK(B) <= RK(C)) ~= A) then pc++ */
OP_TEST,/* A C if not (R(A) <=> C) then pc++ */
OP_TESTSET,/* A B C if (R(B) <=> C) then R(A) := R(B) else pc++ */
OP_CALL,/* A B C R(A), ... ,R(A+C-2) := R(A)(R(A+1), ... ,R(A+B-1)) */
OP_TAILCALL,/* A B C return R(A)(R(A+1), ... ,R(A+B-1)) */
OP_RETURN,/* A B return R(A), ... ,R(A+B-2) (see note) */
OP_FORLOOP,/* A sBx R(A)+=R(A+2);
if R(A) <?= R(A+1) then { pc+=sBx; R(A+3)=R(A) }*/
OP_FORPREP,/* A sBx R(A)-=R(A+2); pc+=sBx */
OP_TFORCALL,/* A C R(A+3), ... ,R(A+2+C) := R(A)(R(A+1), R(A+2)); */
OP_TFORLOOP,/* A sBx if R(A+1) ~= nil then { R(A)=R(A+1); pc += sBx }*/
OP_SETLIST,/* A B C R(A)[(C-1)*FPF+i] := R(A+i), 1 <= i <= B */
OP_CLOSURE,/* A Bx R(A) := closure(KPROTO[Bx]) */
OP_VARARG,/* A B R(A), R(A+1), ..., R(A+B-2) = vararg */
OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
} OpCode;
#define NUM_OPCODES (cast(int, OP_EXTRAARG) + 1)
/*===========================================================================
Notes:
(*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then 'top' is
set to last_result+1, so next open instruction (OP_CALL, OP_RETURN,
OP_SETLIST) may use 'top'.
(*) In OP_VARARG, if (B == 0) then use actual number of varargs and
set top (like in OP_CALL with C == 0).
(*) In OP_RETURN, if (B == 0) then return up to 'top'.
(*) In OP_SETLIST, if (B == 0) then B = 'top'; if (C == 0) then next
'instruction' is EXTRAARG(real C).
(*) In OP_LOADKX, the next 'instruction' is always EXTRAARG.
(*) For comparisons, A specifies what condition the test should accept
(true or false).
(*) All 'skips' (pc++) assume that next instruction is a jump.
===========================================================================*/
/*
** masks for instruction properties. The format is:
** bits 0-1: op mode
** bits 2-3: C arg mode
** bits 4-5: B arg mode
** bit 6: instruction set register A
** bit 7: operator is a test (next instruction must be a jump)
*/
enum OpArgMask {
OpArgN, /* argument is not used */
OpArgU, /* argument is used */
OpArgR, /* argument is a register or a jump offset */
OpArgK /* argument is a constant or register/constant */
};
LUAI_DDEC const lu_byte luaP_opmodes[NUM_OPCODES];
#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 3))
#define getBMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 4) & 3))
#define getCMode(m) (cast(enum OpArgMask, (luaP_opmodes[m] >> 2) & 3))
#define testAMode(m) (luaP_opmodes[m] & (1 << 6))
#define testTMode(m) (luaP_opmodes[m] & (1 << 7))
LUAI_DDEC const char *const luaP_opnames[NUM_OPCODES+1]; /* opcode names */
/* number of list items to accumulate before a SETLIST instruction */
#define LFIELDS_PER_FLUSH 50
#endif

234
lua-5.3.3/src/lstate.h
View File

@ -1,234 +0,0 @@
/*
** $Id: lstate.h,v 2.130 2015/12/16 16:39:38 roberto Exp $
** Global State
** See Copyright Notice in lua.h
*/
#ifndef lstate_h
#define lstate_h
#include "lua.h"
#include "lobject.h"
#include "ltm.h"
#include "lzio.h"
/*
** Some notes about garbage-collected objects: All objects in Lua must
** be kept somehow accessible until being freed, so all objects always
** belong to one (and only one) of these lists, using field 'next' of
** the 'CommonHeader' for the link:
**
** 'allgc': all objects not marked for finalization;
** 'finobj': all objects marked for finalization;
** 'tobefnz': all objects ready to be finalized;
** 'fixedgc': all objects that are not to be collected (currently
** only small strings, such as reserved words).
*/
struct lua_longjmp; /* defined in ldo.c */
/*
** Atomic type (relative to signals) to better ensure that 'lua_sethook'
** is thread safe
*/
#if !defined(l_signalT)
#include <signal.h>
#define l_signalT sig_atomic_t
#endif
/* extra stack space to handle TM calls and some other extras */
#define EXTRA_STACK 5
#define BASIC_STACK_SIZE (2*LUA_MINSTACK)
/* kinds of Garbage Collection */
#define KGC_NORMAL 0
#define KGC_EMERGENCY 1 /* gc was forced by an allocation failure */
typedef struct stringtable {
TString **hash;
int nuse; /* number of elements */
int size;
} stringtable;
/*
** Information about a call.
** When a thread yields, 'func' is adjusted to pretend that the
** top function has only the yielded values in its stack; in that
** case, the actual 'func' value is saved in field 'extra'.
** When a function calls another with a continuation, 'extra' keeps
** the function index so that, in case of errors, the continuation
** function can be called with the correct top.
*/
typedef struct CallInfo {
StkId func; /* function index in the stack */
StkId top; /* top for this function */
struct CallInfo *previous, *next; /* dynamic call link */
union {
struct { /* only for Lua functions */
StkId base; /* base for this function */
const Instruction *savedpc;
} l;
struct { /* only for C functions */
lua_KFunction k; /* continuation in case of yields */
ptrdiff_t old_errfunc;
lua_KContext ctx; /* context info. in case of yields */
} c;
} u;
ptrdiff_t extra;
short nresults; /* expected number of results from this function */
lu_byte callstatus;
} CallInfo;
/*
** Bits in CallInfo status
*/
#define CIST_OAH (1<<0) /* original value of 'allowhook' */
#define CIST_LUA (1<<1) /* call is running a Lua function */
#define CIST_HOOKED (1<<2) /* call is running a debug hook */
#define CIST_FRESH (1<<3) /* call is running on a fresh invocation
of luaV_execute */
#define CIST_YPCALL (1<<4) /* call is a yieldable protected call */
#define CIST_TAIL (1<<5) /* call was tail called */
#define CIST_HOOKYIELD (1<<6) /* last hook called yielded */
#define CIST_LEQ (1<<7) /* using __lt for __le */
#define isLua(ci) ((ci)->callstatus & CIST_LUA)
/* assume that CIST_OAH has offset 0 and that 'v' is strictly 0/1 */
#define setoah(st,v) ((st) = ((st) & ~CIST_OAH) | (v))
#define getoah(st) ((st) & CIST_OAH)
/*
** 'global state', shared by all threads of this state
*/
typedef struct global_State {
lua_Alloc frealloc; /* function to reallocate memory */
void *ud; /* auxiliary data to 'frealloc' */
l_mem totalbytes; /* number of bytes currently allocated - GCdebt */
l_mem GCdebt; /* bytes allocated not yet compensated by the collector */
lu_mem GCmemtrav; /* memory traversed by the GC */
lu_mem GCestimate; /* an estimate of the non-garbage memory in use */
stringtable strt; /* hash table for strings */
TValue l_registry;
unsigned int seed; /* randomized seed for hashes */
lu_byte currentwhite;
lu_byte gcstate; /* state of garbage collector */
lu_byte gckind; /* kind of GC running */
lu_byte gcrunning; /* true if GC is running */
GCObject *allgc; /* list of all collectable objects */
GCObject **sweepgc; /* current position of sweep in list */
GCObject *finobj; /* list of collectable objects with finalizers */
GCObject *gray; /* list of gray objects */
GCObject *grayagain; /* list of objects to be traversed atomically */
GCObject *weak; /* list of tables with weak values */
GCObject *ephemeron; /* list of ephemeron tables (weak keys) */
GCObject *allweak; /* list of all-weak tables */
GCObject *tobefnz; /* list of userdata to be GC */
GCObject *fixedgc; /* list of objects not to be collected */
struct lua_State *twups; /* list of threads with open upvalues */
unsigned int gcfinnum; /* number of finalizers to call in each GC step */
int gcpause; /* size of pause between successive GCs */
int gcstepmul; /* GC 'granularity' */
lua_CFunction panic; /* to be called in unprotected errors */
struct lua_State *mainthread;
const lua_Number *version; /* pointer to version number */
TString *memerrmsg; /* memory-error message */
TString *tmname[TM_N]; /* array with tag-method names */
struct Table *mt[LUA_NUMTAGS]; /* metatables for basic types */
TString *strcache[STRCACHE_N][STRCACHE_M]; /* cache for strings in API */
} global_State;
/*
** 'per thread' state
*/
struct lua_State {
CommonHeader;
unsigned short nci; /* number of items in 'ci' list */
lu_byte status;
StkId top; /* first free slot in the stack */
global_State *l_G;
CallInfo *ci; /* call info for current function */
const Instruction *oldpc; /* last pc traced */
StkId stack_last; /* last free slot in the stack */
StkId stack; /* stack base */
UpVal *openupval; /* list of open upvalues in this stack */
GCObject *gclist;
struct lua_State *twups; /* list of threads with open upvalues */
struct lua_longjmp *errorJmp; /* current error recover point */
CallInfo base_ci; /* CallInfo for first level (C calling Lua) */
volatile lua_Hook hook;
ptrdiff_t errfunc; /* current error handling function (stack index) */
int stacksize;
int basehookcount;
int hookcount;
unsigned short nny; /* number of non-yieldable calls in stack */
unsigned short nCcalls; /* number of nested C calls */
l_signalT hookmask;
lu_byte allowhook;
};
#define G(L) (L->l_G)
/*
** Union of all collectable objects (only for conversions)
*/
union GCUnion {
GCObject gc; /* common header */
struct TString ts;
struct Udata u;
union Closure cl;
struct Table h;
struct Proto p;
struct lua_State th; /* thread */
};
#define cast_u(o) cast(union GCUnion *, (o))
/* macros to convert a GCObject into a specific value */
#define gco2ts(o) \
check_exp(novariant((o)->tt) == LUA_TSTRING, &((cast_u(o))->ts))
#define gco2u(o) check_exp((o)->tt == LUA_TUSERDATA, &((cast_u(o))->u))
#define gco2lcl(o) check_exp((o)->tt == LUA_TLCL, &((cast_u(o))->cl.l))
#define gco2ccl(o) check_exp((o)->tt == LUA_TCCL, &((cast_u(o))->cl.c))
#define gco2cl(o) \
check_exp(novariant((o)->tt) == LUA_TFUNCTION, &((cast_u(o))->cl))
#define gco2t(o) check_exp((o)->tt == LUA_TTABLE, &((cast_u(o))->h))
#define gco2p(o) check_exp((o)->tt == LUA_TPROTO, &((cast_u(o))->p))
#define gco2th(o) check_exp((o)->tt == LUA_TTHREAD, &((cast_u(o))->th))
/* macro to convert a Lua object into a GCObject */
#define obj2gco(v) \
check_exp(novariant((v)->tt) < LUA_TDEADKEY, (&(cast_u(v)->gc)))
/* actual number of total bytes allocated */
#define gettotalbytes(g) cast(lu_mem, (g)->totalbytes + (g)->GCdebt)
LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt);
LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1);
LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L);
LUAI_FUNC void luaE_freeCI (lua_State *L);
LUAI_FUNC void luaE_shrinkCI (lua_State *L);
#endif

669
lua-5.3.3/src/ltable.c
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@ -1,669 +0,0 @@
/*
** $Id: ltable.c,v 2.117 2015/11/19 19:16:22 roberto Exp $
** Lua tables (hash)
** See Copyright Notice in lua.h
*/
#define ltable_c
#define LUA_CORE
#include "lprefix.h"
/*
** Implementation of tables (aka arrays, objects, or hash tables).
** Tables keep its elements in two parts: an array part and a hash part.
** Non-negative integer keys are all candidates to be kept in the array
** part. The actual size of the array is the largest 'n' such that
** more than half the slots between 1 and n are in use.
** Hash uses a mix of chained scatter table with Brent's variation.
** A main invariant of these tables is that, if an element is not
** in its main position (i.e. the 'original' position that its hash gives
** to it), then the colliding element is in its own main position.
** Hence even when the load factor reaches 100%, performance remains good.
*/
#include <math.h>
#include <limits.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "lvm.h"
/*
** Maximum size of array part (MAXASIZE) is 2^MAXABITS. MAXABITS is
** the largest integer such that MAXASIZE fits in an unsigned int.
*/
#define MAXABITS cast_int(sizeof(int) * CHAR_BIT - 1)
#define MAXASIZE (1u << MAXABITS)
/*
** Maximum size of hash part is 2^MAXHBITS. MAXHBITS is the largest
** integer such that 2^MAXHBITS fits in a signed int. (Note that the
** maximum number of elements in a table, 2^MAXABITS + 2^MAXHBITS, still
** fits comfortably in an unsigned int.)
*/
#define MAXHBITS (MAXABITS - 1)
#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t))))
#define hashstr(t,str) hashpow2(t, (str)->hash)
#define hashboolean(t,p) hashpow2(t, p)
#define hashint(t,i) hashpow2(t, i)
/*
** for some types, it is better to avoid modulus by power of 2, as
** they tend to have many 2 factors.
*/
#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1))))
#define hashpointer(t,p) hashmod(t, point2uint(p))
#define dummynode (&dummynode_)
#define isdummy(n) ((n) == dummynode)
static const Node dummynode_ = {
{NILCONSTANT}, /* value */
{{NILCONSTANT, 0}} /* key */
};
/*
** Hash for floating-point numbers.
** The main computation should be just
** n = frexp(n, &i); return (n * INT_MAX) + i
** but there are some numerical subtleties.
** In a two-complement representation, INT_MAX does not has an exact
** representation as a float, but INT_MIN does; because the absolute
** value of 'frexp' is smaller than 1 (unless 'n' is inf/NaN), the
** absolute value of the product 'frexp * -INT_MIN' is smaller or equal
** to INT_MAX. Next, the use of 'unsigned int' avoids overflows when
** adding 'i'; the use of '~u' (instead of '-u') avoids problems with
** INT_MIN.
*/
#if !defined(l_hashfloat)
static int l_hashfloat (lua_Number n) {
int i;
lua_Integer ni;
n = l_mathop(frexp)(n, &i) * -cast_num(INT_MIN);
if (!lua_numbertointeger(n, &ni)) { /* is 'n' inf/-inf/NaN? */
lua_assert(luai_numisnan(n) || l_mathop(fabs)(n) == cast_num(HUGE_VAL));
return 0;
}
else { /* normal case */
unsigned int u = cast(unsigned int, i) + cast(unsigned int, ni);
return cast_int(u <= cast(unsigned int, INT_MAX) ? u : ~u);
}
}
#endif
/*
** returns the 'main' position of an element in a table (that is, the index
** of its hash value)
*/
static Node *mainposition (const Table *t, const TValue *key) {
switch (ttype(key)) {
case LUA_TNUMINT:
return hashint(t, ivalue(key));
case LUA_TNUMFLT:
return hashmod(t, l_hashfloat(fltvalue(key)));
case LUA_TSHRSTR:
return hashstr(t, tsvalue(key));
case LUA_TLNGSTR:
return hashpow2(t, luaS_hashlongstr(tsvalue(key)));
case LUA_TBOOLEAN:
return hashboolean(t, bvalue(key));
case LUA_TLIGHTUSERDATA:
return hashpointer(t, pvalue(key));
case LUA_TLCF:
return hashpointer(t, fvalue(key));
default:
lua_assert(!ttisdeadkey(key));
return hashpointer(t, gcvalue(key));
}
}
/*
** returns the index for 'key' if 'key' is an appropriate key to live in
** the array part of the table, 0 otherwise.
*/
static unsigned int arrayindex (const TValue *key) {
if (ttisinteger(key)) {
lua_Integer k = ivalue(key);
if (0 < k && (lua_Unsigned)k <= MAXASIZE)
return cast(unsigned int, k); /* 'key' is an appropriate array index */
}
return 0; /* 'key' did not match some condition */
}
/*
** returns the index of a 'key' for table traversals. First goes all
** elements in the array part, then elements in the hash part. The
** beginning of a traversal is signaled by 0.
*/
static unsigned int findindex (lua_State *L, Table *t, StkId key) {
unsigned int i;
if (ttisnil(key)) return 0; /* first iteration */
i = arrayindex(key);
if (i != 0 && i <= t->sizearray) /* is 'key' inside array part? */
return i; /* yes; that's the index */
else {
int nx;
Node *n = mainposition(t, key);
for (;;) { /* check whether 'key' is somewhere in the chain */
/* key may be dead already, but it is ok to use it in 'next' */
if (luaV_rawequalobj(gkey(n), key) ||
(ttisdeadkey(gkey(n)) && iscollectable(key) &&
deadvalue(gkey(n)) == gcvalue(key))) {
i = cast_int(n - gnode(t, 0)); /* key index in hash table */
/* hash elements are numbered after array ones */
return (i + 1) + t->sizearray;
}
nx = gnext(n);
if (nx == 0)
luaG_runerror(L, "invalid key to 'next'"); /* key not found */
else n += nx;
}
}
}
int luaH_next (lua_State *L, Table *t, StkId key) {
unsigned int i = findindex(L, t, key); /* find original element */
for (; i < t->sizearray; i++) { /* try first array part */
if (!ttisnil(&t->array[i])) { /* a non-nil value? */
setivalue(key, i + 1);
setobj2s(L, key+1, &t->array[i]);
return 1;
}
}
for (i -= t->sizearray; cast_int(i) < sizenode(t); i++) { /* hash part */
if (!ttisnil(gval(gnode(t, i)))) { /* a non-nil value? */
setobj2s(L, key, gkey(gnode(t, i)));
setobj2s(L, key+1, gval(gnode(t, i)));
return 1;
}
}
return 0; /* no more elements */
}
/*
** {=============================================================
** Rehash
** ==============================================================
*/
/*
** Compute the optimal size for the array part of table 't'. 'nums' is a
** "count array" where 'nums[i]' is the number of integers in the table
** between 2^(i - 1) + 1 and 2^i. 'pna' enters with the total number of
** integer keys in the table and leaves with the number of keys that
** will go to the array part; return the optimal size.
*/
static unsigned int computesizes (unsigned int nums[], unsigned int *pna) {
int i;
unsigned int twotoi; /* 2^i (candidate for optimal size) */
unsigned int a = 0; /* number of elements smaller than 2^i */
unsigned int na = 0; /* number of elements to go to array part */
unsigned int optimal = 0; /* optimal size for array part */
/* loop while keys can fill more than half of total size */
for (i = 0, twotoi = 1; *pna > twotoi / 2; i++, twotoi *= 2) {
if (nums[i] > 0) {
a += nums[i];
if (a > twotoi/2) { /* more than half elements present? */
optimal = twotoi; /* optimal size (till now) */
na = a; /* all elements up to 'optimal' will go to array part */
}
}
}
lua_assert((optimal == 0 || optimal / 2 < na) && na <= optimal);
*pna = na;
return optimal;
}
static int countint (const TValue *key, unsigned int *nums) {
unsigned int k = arrayindex(key);
if (k != 0) { /* is 'key' an appropriate array index? */
nums[luaO_ceillog2(k)]++; /* count as such */
return 1;
}
else
return 0;
}
/*
** Count keys in array part of table 't': Fill 'nums[i]' with
** number of keys that will go into corresponding slice and return
** total number of non-nil keys.
*/
static unsigned int numusearray (const Table *t, unsigned int *nums) {
int lg;
unsigned int ttlg; /* 2^lg */
unsigned int ause = 0; /* summation of 'nums' */
unsigned int i = 1; /* count to traverse all array keys */
/* traverse each slice */
for (lg = 0, ttlg = 1; lg <= MAXABITS; lg++, ttlg *= 2) {
unsigned int lc = 0; /* counter */
unsigned int lim = ttlg;
if (lim > t->sizearray) {
lim = t->sizearray; /* adjust upper limit */
if (i > lim)
break; /* no more elements to count */
}
/* count elements in range (2^(lg - 1), 2^lg] */
for (; i <= lim; i++) {
if (!ttisnil(&t->array[i-1]))
lc++;
}
nums[lg] += lc;
ause += lc;
}
return ause;
}
static int numusehash (const Table *t, unsigned int *nums, unsigned int *pna) {
int totaluse = 0; /* total number of elements */
int ause = 0; /* elements added to 'nums' (can go to array part) */
int i = sizenode(t);
while (i--) {
Node *n = &t->node[i];
if (!ttisnil(gval(n))) {
ause += countint(gkey(n), nums);
totaluse++;
}
}
*pna += ause;
return totaluse;
}
static void setarrayvector (lua_State *L, Table *t, unsigned int size) {
unsigned int i;
luaM_reallocvector(L, t->array, t->sizearray, size, TValue);
for (i=t->sizearray; i<size; i++)
setnilvalue(&t->array[i]);
t->sizearray = size;
}
static void setnodevector (lua_State *L, Table *t, unsigned int size) {
int lsize;
if (size == 0) { /* no elements to hash part? */
t->node = cast(Node *, dummynode); /* use common 'dummynode' */
lsize = 0;
}
else {
int i;
lsize = luaO_ceillog2(size);
if (lsize > MAXHBITS)
luaG_runerror(L, "table overflow");
size = twoto(lsize);
t->node = luaM_newvector(L, size, Node);
for (i = 0; i < (int)size; i++) {
Node *n = gnode(t, i);
gnext(n) = 0;
setnilvalue(wgkey(n));
setnilvalue(gval(n));
}
}
t->lsizenode = cast_byte(lsize);
t->lastfree = gnode(t, size); /* all positions are free */
}
void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
unsigned int nhsize) {
unsigned int i;
int j;
unsigned int oldasize = t->sizearray;
int oldhsize = t->lsizenode;
Node *nold = t->node; /* save old hash ... */
if (nasize > oldasize) /* array part must grow? */
setarrayvector(L, t, nasize);
/* create new hash part with appropriate size */
setnodevector(L, t, nhsize);
if (nasize < oldasize) { /* array part must shrink? */
t->sizearray = nasize;
/* re-insert elements from vanishing slice */
for (i=nasize; i<oldasize; i++) {
if (!ttisnil(&t->array[i]))
luaH_setint(L, t, i + 1, &t->array[i]);
}
/* shrink array */
luaM_reallocvector(L, t->array, oldasize, nasize, TValue);
}
/* re-insert elements from hash part */
for (j = twoto(oldhsize) - 1; j >= 0; j--) {
Node *old = nold + j;
if (!ttisnil(gval(old))) {
/* doesn't need barrier/invalidate cache, as entry was
already present in the table */
setobjt2t(L, luaH_set(L, t, gkey(old)), gval(old));
}
}
if (!isdummy(nold))
luaM_freearray(L, nold, cast(size_t, twoto(oldhsize))); /* free old hash */
}
void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize) {
int nsize = isdummy(t->node) ? 0 : sizenode(t);
luaH_resize(L, t, nasize, nsize);
}
/*
** nums[i] = number of keys 'k' where 2^(i - 1) < k <= 2^i
*/
static void rehash (lua_State *L, Table *t, const TValue *ek) {
unsigned int asize; /* optimal size for array part */
unsigned int na; /* number of keys in the array part */
unsigned int nums[MAXABITS + 1];
int i;
int totaluse;
for (i = 0; i <= MAXABITS; i++) nums[i] = 0; /* reset counts */
na = numusearray(t, nums); /* count keys in array part */
totaluse = na; /* all those keys are integer keys */
totaluse += numusehash(t, nums, &na); /* count keys in hash part */
/* count extra key */
na += countint(ek, nums);
totaluse++;
/* compute new size for array part */
asize = computesizes(nums, &na);
/* resize the table to new computed sizes */
luaH_resize(L, t, asize, totaluse - na);
}
/*
** }=============================================================
*/
Table *luaH_new (lua_State *L) {
GCObject *o = luaC_newobj(L, LUA_TTABLE, sizeof(Table));
Table *t = gco2t(o);
t->metatable = NULL;
t->flags = cast_byte(~0);
t->array = NULL;
t->sizearray = 0;
setnodevector(L, t, 0);
return t;
}
void luaH_free (lua_State *L, Table *t) {
if (!isdummy(t->node))
luaM_freearray(L, t->node, cast(size_t, sizenode(t)));
luaM_freearray(L, t->array, t->sizearray);
luaM_free(L, t);
}
static Node *getfreepos (Table *t) {
while (t->lastfree > t->node) {
t->lastfree--;
if (ttisnil(gkey(t->lastfree)))
return t->lastfree;
}
return NULL; /* could not find a free place */
}
/*
** inserts a new key into a hash table; first, check whether key's main
** position is free. If not, check whether colliding node is in its main
** position or not: if it is not, move colliding node to an empty place and
** put new key in its main position; otherwise (colliding node is in its main
** position), new key goes to an empty position.
*/
TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
Node *mp;
TValue aux;
if (ttisnil(key)) luaG_runerror(L, "table index is nil");
else if (ttisfloat(key)) {
lua_Integer k;
if (luaV_tointeger(key, &k, 0)) { /* index is int? */
setivalue(&aux, k);
key = &aux; /* insert it as an integer */
}
else if (luai_numisnan(fltvalue(key)))
luaG_runerror(L, "table index is NaN");
}
mp = mainposition(t, key);
if (!ttisnil(gval(mp)) || isdummy(mp)) { /* main position is taken? */
Node *othern;
Node *f = getfreepos(t); /* get a free place */
if (f == NULL) { /* cannot find a free place? */
rehash(L, t, key); /* grow table */
/* whatever called 'newkey' takes care of TM cache */
return luaH_set(L, t, key); /* insert key into grown table */
}
lua_assert(!isdummy(f));
othern = mainposition(t, gkey(mp));
if (othern != mp) { /* is colliding node out of its main position? */
/* yes; move colliding node into free position */
while (othern + gnext(othern) != mp) /* find previous */
othern += gnext(othern);
gnext(othern) = cast_int(f - othern); /* rechain to point to 'f' */
*f = *mp; /* copy colliding node into free pos. (mp->next also goes) */
if (gnext(mp) != 0) {
gnext(f) += cast_int(mp - f); /* correct 'next' */
gnext(mp) = 0; /* now 'mp' is free */
}
setnilvalue(gval(mp));
}
else { /* colliding node is in its own main position */
/* new node will go into free position */
if (gnext(mp) != 0)
gnext(f) = cast_int((mp + gnext(mp)) - f); /* chain new position */
else lua_assert(gnext(f) == 0);
gnext(mp) = cast_int(f - mp);
mp = f;
}
}
setnodekey(L, &mp->i_key, key);
luaC_barrierback(L, t, key);
lua_assert(ttisnil(gval(mp)));
return gval(mp);
}
/*
** search function for integers
*/
const TValue *luaH_getint (Table *t, lua_Integer key) {
/* (1 <= key && key <= t->sizearray) */
if (l_castS2U(key) - 1 < t->sizearray)
return &t->array[key - 1];
else {
Node *n = hashint(t, key);
for (;;) { /* check whether 'key' is somewhere in the chain */
if (ttisinteger(gkey(n)) && ivalue(gkey(n)) == key)
return gval(n); /* that's it */
else {
int nx = gnext(n);
if (nx == 0) break;
n += nx;
}
}
return luaO_nilobject;
}
}
/*
** search function for short strings
*/
const TValue *luaH_getshortstr (Table *t, TString *key) {
Node *n = hashstr(t, key);
lua_assert(key->tt == LUA_TSHRSTR);
for (;;) { /* check whether 'key' is somewhere in the chain */
const TValue *k = gkey(n);
if (ttisshrstring(k) && eqshrstr(tsvalue(k), key))
return gval(n); /* that's it */
else {
int nx = gnext(n);
if (nx == 0)
return luaO_nilobject; /* not found */
n += nx;
}
}
}
/*
** "Generic" get version. (Not that generic: not valid for integers,
** which may be in array part, nor for floats with integral values.)
*/
static const TValue *getgeneric (Table *t, const TValue *key) {
Node *n = mainposition(t, key);
for (;;) { /* check whether 'key' is somewhere in the chain */
if (luaV_rawequalobj(gkey(n), key))
return gval(n); /* that's it */
else {
int nx = gnext(n);
if (nx == 0)
return luaO_nilobject; /* not found */
n += nx;
}
}
}
const TValue *luaH_getstr (Table *t, TString *key) {
if (key->tt == LUA_TSHRSTR)
return luaH_getshortstr(t, key);
else { /* for long strings, use generic case */
TValue ko;
setsvalue(cast(lua_State *, NULL), &ko, key);
return getgeneric(t, &ko);
}
}
/*
** main search function
*/
const TValue *luaH_get (Table *t, const TValue *key) {
switch (ttype(key)) {
case LUA_TSHRSTR: return luaH_getshortstr(t, tsvalue(key));
case LUA_TNUMINT: return luaH_getint(t, ivalue(key));
case LUA_TNIL: return luaO_nilobject;
case LUA_TNUMFLT: {
lua_Integer k;
if (luaV_tointeger(key, &k, 0)) /* index is int? */
return luaH_getint(t, k); /* use specialized version */
/* else... */
} /* FALLTHROUGH */
default:
return getgeneric(t, key);
}
}
/*
** beware: when using this function you probably need to check a GC
** barrier and invalidate the TM cache.
*/
TValue *luaH_set (lua_State *L, Table *t, const TValue *key) {
const TValue *p = luaH_get(t, key);
if (p != luaO_nilobject)
return cast(TValue *, p);
else return luaH_newkey(L, t, key);
}
void luaH_setint (lua_State *L, Table *t, lua_Integer key, TValue *value) {
const TValue *p = luaH_getint(t, key);
TValue *cell;
if (p != luaO_nilobject)
cell = cast(TValue *, p);
else {
TValue k;
setivalue(&k, key);
cell = luaH_newkey(L, t, &k);
}
setobj2t(L, cell, value);
}
static int unbound_search (Table *t, unsigned int j) {
unsigned int i = j; /* i is zero or a present index */
j++;
/* find 'i' and 'j' such that i is present and j is not */
while (!ttisnil(luaH_getint(t, j))) {
i = j;
if (j > cast(unsigned int, MAX_INT)/2) { /* overflow? */
/* table was built with bad purposes: resort to linear search */
i = 1;
while (!ttisnil(luaH_getint(t, i))) i++;
return i - 1;
}
j *= 2;
}
/* now do a binary search between them */
while (j - i > 1) {
unsigned int m = (i+j)/2;
if (ttisnil(luaH_getint(t, m))) j = m;
else i = m;
}
return i;
}
/*
** Try to find a boundary in table 't'. A 'boundary' is an integer index
** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil).
*/
int luaH_getn (Table *t) {
unsigned int j = t->sizearray;
if (j > 0 && ttisnil(&t->array[j - 1])) {
/* there is a boundary in the array part: (binary) search for it */
unsigned int i = 0;
while (j - i > 1) {
unsigned int m = (i+j)/2;
if (ttisnil(&t->array[m - 1])) j = m;
else i = m;
}
return i;
}
/* else must find a boundary in hash part */
else if (isdummy(t->node)) /* hash part is empty? */
return j; /* that is easy... */
else return unbound_search(t, j);
}
#if defined(LUA_DEBUG)
Node *luaH_mainposition (const Table *t, const TValue *key) {
return mainposition(t, key);
}
int luaH_isdummy (Node *n) { return isdummy(n); }
#endif

165
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@ -1,165 +0,0 @@
/*
** $Id: ltm.c,v 2.37 2016/02/26 19:20:15 roberto Exp $
** Tag methods
** See Copyright Notice in lua.h
*/
#define ltm_c
#define LUA_CORE
#include "lprefix.h"
#include <string.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lvm.h"
static const char udatatypename[] = "userdata";
LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTAGS] = {
"no value",
"nil", "boolean", udatatypename, "number",
"string", "table", "function", udatatypename, "thread",
"proto" /* this last case is used for tests only */
};
void luaT_init (lua_State *L) {
static const char *const luaT_eventname[] = { /* ORDER TM */
"__index", "__newindex",
"__gc", "__mode", "__len", "__eq",
"__add", "__sub", "__mul", "__mod", "__pow",
"__div", "__idiv",
"__band", "__bor", "__bxor", "__shl", "__shr",
"__unm", "__bnot", "__lt", "__le",
"__concat", "__call"
};
int i;
for (i=0; i<TM_N; i++) {
G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */
}
}
/*
** function to be used with macro "fasttm": optimized for absence of
** tag methods
*/
const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
const TValue *tm = luaH_getshortstr(events, ename);
lua_assert(event <= TM_EQ);
if (ttisnil(tm)) { /* no tag method? */
events->flags |= cast_byte(1u<<event); /* cache this fact */
return NULL;
}
else return tm;
}
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
Table *mt;
switch (ttnov(o)) {
case LUA_TTABLE:
mt = hvalue(o)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(o)->metatable;
break;
default:
mt = G(L)->mt[ttnov(o)];
}
return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : luaO_nilobject);
}
/*
** Return the name of the type of an object. For tables and userdata
** with metatable, use their '__name' metafield, if present.
*/
const char *luaT_objtypename (lua_State *L, const TValue *o) {
Table *mt;
if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
(ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
if (ttisstring(name)) /* is '__name' a string? */
return getstr(tsvalue(name)); /* use it as type name */
}
return ttypename(ttnov(o)); /* else use standard type name */
}
void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, TValue *p3, int hasres) {
ptrdiff_t result = savestack(L, p3);
StkId func = L->top;
setobj2s(L, func, f); /* push function (assume EXTRA_STACK) */
setobj2s(L, func + 1, p1); /* 1st argument */
setobj2s(L, func + 2, p2); /* 2nd argument */
L->top += 3;
if (!hasres) /* no result? 'p3' is third argument */
setobj2s(L, L->top++, p3); /* 3rd argument */
/* metamethod may yield only when called from Lua code */
if (isLua(L->ci))
luaD_call(L, func, hasres);
else
luaD_callnoyield(L, func, hasres);
if (hasres) { /* if has result, move it to its place */
p3 = restorestack(L, result);
setobjs2s(L, p3, --L->top);
}
}
int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
if (ttisnil(tm))
tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
if (ttisnil(tm)) return 0;
luaT_callTM(L, tm, p1, p2, res, 1);
return 1;
}
void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
if (!luaT_callbinTM(L, p1, p2, res, event)) {
switch (event) {
case TM_CONCAT:
luaG_concaterror(L, p1, p2);
/* call never returns, but to avoid warnings: *//* FALLTHROUGH */
case TM_BAND: case TM_BOR: case TM_BXOR:
case TM_SHL: case TM_SHR: case TM_BNOT: {
lua_Number dummy;
if (tonumber(p1, &dummy) && tonumber(p2, &dummy))
luaG_tointerror(L, p1, p2);
else
luaG_opinterror(L, p1, p2, "perform bitwise operation on");
}
/* calls never return, but to avoid warnings: *//* FALLTHROUGH */
default:
luaG_opinterror(L, p1, p2, "perform arithmetic on");
}
}
}
int luaT_callorderTM (lua_State *L, const TValue *p1, const TValue *p2,
TMS event) {
if (!luaT_callbinTM(L, p1, p2, L->top, event))
return -1; /* no metamethod */
else
return !l_isfalse(L->top);
}

279
lua-5.3.3/src/lundump.c
View File

@ -1,279 +0,0 @@
/*
** $Id: lundump.c,v 2.44 2015/11/02 16:09:30 roberto Exp $
** load precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#define lundump_c
#define LUA_CORE
#include "lprefix.h"
#include <string.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstring.h"
#include "lundump.h"
#include "lzio.h"
#if !defined(luai_verifycode)
#define luai_verifycode(L,b,f) /* empty */
#endif
typedef struct {
lua_State *L;
ZIO *Z;
const char *name;
} LoadState;
static l_noret error(LoadState *S, const char *why) {
luaO_pushfstring(S->L, "%s: %s precompiled chunk", S->name, why);
luaD_throw(S->L, LUA_ERRSYNTAX);
}
/*
** All high-level loads go through LoadVector; you can change it to
** adapt to the endianness of the input
*/
#define LoadVector(S,b,n) LoadBlock(S,b,(n)*sizeof((b)[0]))
static void LoadBlock (LoadState *S, void *b, size_t size) {
if (luaZ_read(S->Z, b, size) != 0)
error(S, "truncated");
}
#define LoadVar(S,x) LoadVector(S,&x,1)
static lu_byte LoadByte (LoadState *S) {
lu_byte x;
LoadVar(S, x);
return x;
}
static int LoadInt (LoadState *S) {
int x;
LoadVar(S, x);
return x;
}
static lua_Number LoadNumber (LoadState *S) {
lua_Number x;
LoadVar(S, x);
return x;
}
static lua_Integer LoadInteger (LoadState *S) {
lua_Integer x;
LoadVar(S, x);
return x;
}
static TString *LoadString (LoadState *S) {
size_t size = LoadByte(S);
if (size == 0xFF)
LoadVar(S, size);
if (size == 0)
return NULL;
else if (--size <= LUAI_MAXSHORTLEN) { /* short string? */
char buff[LUAI_MAXSHORTLEN];
LoadVector(S, buff, size);
return luaS_newlstr(S->L, buff, size);
}
else { /* long string */
TString *ts = luaS_createlngstrobj(S->L, size);
LoadVector(S, getstr(ts), size); /* load directly in final place */
return ts;
}
}
static void LoadCode (LoadState *S, Proto *f) {
int n = LoadInt(S);
f->code = luaM_newvector(S->L, n, Instruction);
f->sizecode = n;
LoadVector(S, f->code, n);
}
static void LoadFunction(LoadState *S, Proto *f, TString *psource);
static void LoadConstants (LoadState *S, Proto *f) {
int i;
int n = LoadInt(S);
f->k = luaM_newvector(S->L, n, TValue);
f->sizek = n;
for (i = 0; i < n; i++)
setnilvalue(&f->k[i]);
for (i = 0; i < n; i++) {
TValue *o = &f->k[i];
int t = LoadByte(S);
switch (t) {
case LUA_TNIL:
setnilvalue(o);
break;
case LUA_TBOOLEAN:
setbvalue(o, LoadByte(S));
break;
case LUA_TNUMFLT:
setfltvalue(o, LoadNumber(S));
break;
case LUA_TNUMINT:
setivalue(o, LoadInteger(S));
break;
case LUA_TSHRSTR:
case LUA_TLNGSTR:
setsvalue2n(S->L, o, LoadString(S));
break;
default:
lua_assert(0);
}
}
}
static void LoadProtos (LoadState *S, Proto *f) {
int i;
int n = LoadInt(S);
f->p = luaM_newvector(S->L, n, Proto *);
f->sizep = n;
for (i = 0; i < n; i++)
f->p[i] = NULL;
for (i = 0; i < n; i++) {
f->p[i] = luaF_newproto(S->L);
LoadFunction(S, f->p[i], f->source);
}
}
static void LoadUpvalues (LoadState *S, Proto *f) {
int i, n;
n = LoadInt(S);
f->upvalues = luaM_newvector(S->L, n, Upvaldesc);
f->sizeupvalues = n;
for (i = 0; i < n; i++)
f->upvalues[i].name = NULL;
for (i = 0; i < n; i++) {
f->upvalues[i].instack = LoadByte(S);
f->upvalues[i].idx = LoadByte(S);
}
}
static void LoadDebug (LoadState *S, Proto *f) {
int i, n;
n = LoadInt(S);
f->lineinfo = luaM_newvector(S->L, n, int);
f->sizelineinfo = n;
LoadVector(S, f->lineinfo, n);
n = LoadInt(S);
f->locvars = luaM_newvector(S->L, n, LocVar);
f->sizelocvars = n;
for (i = 0; i < n; i++)
f->locvars[i].varname = NULL;
for (i = 0; i < n; i++) {
f->locvars[i].varname = LoadString(S);
f->locvars[i].startpc = LoadInt(S);
f->locvars[i].endpc = LoadInt(S);
}
n = LoadInt(S);
for (i = 0; i < n; i++)
f->upvalues[i].name = LoadString(S);
}
static void LoadFunction (LoadState *S, Proto *f, TString *psource) {
f->source = LoadString(S);
if (f->source == NULL) /* no source in dump? */
f->source = psource; /* reuse parent's source */
f->linedefined = LoadInt(S);
f->lastlinedefined = LoadInt(S);
f->numparams = LoadByte(S);
f->is_vararg = LoadByte(S);
f->maxstacksize = LoadByte(S);
LoadCode(S, f);
LoadConstants(S, f);
LoadUpvalues(S, f);
LoadProtos(S, f);
LoadDebug(S, f);
}
static void checkliteral (LoadState *S, const char *s, const char *msg) {
char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
size_t len = strlen(s);
LoadVector(S, buff, len);
if (memcmp(s, buff, len) != 0)
error(S, msg);
}
static void fchecksize (LoadState *S, size_t size, const char *tname) {
if (LoadByte(S) != size)
error(S, luaO_pushfstring(S->L, "%s size mismatch in", tname));
}
#define checksize(S,t) fchecksize(S,sizeof(t),#t)
static void checkHeader (LoadState *S) {
checkliteral(S, LUA_SIGNATURE + 1, "not a"); /* 1st char already checked */
if (LoadByte(S) != LUAC_VERSION)
error(S, "version mismatch in");
if (LoadByte(S) != LUAC_FORMAT)
error(S, "format mismatch in");
checkliteral(S, LUAC_DATA, "corrupted");
checksize(S, int);
checksize(S, size_t);
checksize(S, Instruction);
checksize(S, lua_Integer);
checksize(S, lua_Number);
if (LoadInteger(S) != LUAC_INT)
error(S, "endianness mismatch in");
if (LoadNumber(S) != LUAC_NUM)
error(S, "float format mismatch in");
}
/*
** load precompiled chunk
*/
LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) {
LoadState S;
LClosure *cl;
if (*name == '@' || *name == '=')
S.name = name + 1;
else if (*name == LUA_SIGNATURE[0])
S.name = "binary string";
else
S.name = name;
S.L = L;
S.Z = Z;
checkHeader(&S);
cl = luaF_newLclosure(L, LoadByte(&S));
setclLvalue(L, L->top, cl);
luaD_inctop(L);
cl->p = luaF_newproto(L);
LoadFunction(&S, cl->p, NULL);
lua_assert(cl->nupvalues == cl->p->sizeupvalues);
luai_verifycode(L, buff, cl->p);
return cl;
}

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lua-5.3.3/src/lvm.c
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113
lua-5.3.3/src/lvm.h
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/*
** $Id: lvm.h,v 2.40 2016/01/05 16:07:21 roberto Exp $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lvm_h
#define lvm_h
#include "ldo.h"
#include "lobject.h"
#include "ltm.h"
#if !defined(LUA_NOCVTN2S)
#define cvt2str(o) ttisnumber(o)
#else
#define cvt2str(o) 0 /* no conversion from numbers to strings */
#endif
#if !defined(LUA_NOCVTS2N)
#define cvt2num(o) ttisstring(o)
#else
#define cvt2num(o) 0 /* no conversion from strings to numbers */
#endif
/*
** You can define LUA_FLOORN2I if you want to convert floats to integers
** by flooring them (instead of raising an error if they are not
** integral values)
*/
#if !defined(LUA_FLOORN2I)
#define LUA_FLOORN2I 0
#endif
#define tonumber(o,n) \
(ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n))
#define tointeger(o,i) \
(ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger(o,i,LUA_FLOORN2I))
#define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2))
#define luaV_rawequalobj(t1,t2) luaV_equalobj(NULL,t1,t2)
/*
** fast track for 'gettable': if 't' is a table and 't[k]' is not nil,
** return 1 with 'slot' pointing to 't[k]' (final result). Otherwise,
** return 0 (meaning it will have to check metamethod) with 'slot'
** pointing to a nil 't[k]' (if 't' is a table) or NULL (otherwise).
** 'f' is the raw get function to use.
*/
#define luaV_fastget(L,t,k,slot,f) \
(!ttistable(t) \
? (slot = NULL, 0) /* not a table; 'slot' is NULL and result is 0 */ \
: (slot = f(hvalue(t), k), /* else, do raw access */ \
!ttisnil(slot))) /* result not nil? */
/*
** standard implementation for 'gettable'
*/
#define luaV_gettable(L,t,k,v) { const TValue *slot; \
if (luaV_fastget(L,t,k,slot,luaH_get)) { setobj2s(L, v, slot); } \
else luaV_finishget(L,t,k,v,slot); }
/*
** Fast track for set table. If 't' is a table and 't[k]' is not nil,
** call GC barrier, do a raw 't[k]=v', and return true; otherwise,
** return false with 'slot' equal to NULL (if 't' is not a table) or
** 'nil'. (This is needed by 'luaV_finishget'.) Note that, if the macro
** returns true, there is no need to 'invalidateTMcache', because the
** call is not creating a new entry.
*/
#define luaV_fastset(L,t,k,slot,f,v) \
(!ttistable(t) \
? (slot = NULL, 0) \
: (slot = f(hvalue(t), k), \
ttisnil(slot) ? 0 \
: (luaC_barrierback(L, hvalue(t), v), \
setobj2t(L, cast(TValue *,slot), v), \
1)))
#define luaV_settable(L,t,k,v) { const TValue *slot; \
if (!luaV_fastset(L,t,k,slot,luaH_get,v)) \
luaV_finishset(L,t,k,v,slot); }
LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, int mode);
LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key,
StkId val, const TValue *slot);
LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
StkId val, const TValue *slot);
LUAI_FUNC void luaV_finishOp (lua_State *L);
LUAI_FUNC void luaV_execute (lua_State *L);
LUAI_FUNC void luaV_concat (lua_State *L, int total);
LUAI_FUNC lua_Integer luaV_div (lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y);
LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb);
#endif

30
lua-5.3.3/Makefile → lua-5.4.0/Makefile
View File

@ -4,7 +4,7 @@
# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT ======================= # == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================
# Your platform. See PLATS for possible values. # Your platform. See PLATS for possible values.
PLAT= none PLAT= guess
# Where to install. The installation starts in the src and doc directories, # Where to install. The installation starts in the src and doc directories,
# so take care if INSTALL_TOP is not an absolute path. See the local target. # so take care if INSTALL_TOP is not an absolute path. See the local target.
@ -36,7 +36,7 @@ RM= rm -f
# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE ======= # == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======
# Convenience platforms targets. # Convenience platforms targets.
PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris PLATS= guess aix bsd c89 freebsd generic linux linux-readline macosx mingw posix solaris
# What to install. # What to install.
TO_BIN= lua luac TO_BIN= lua luac
@ -45,17 +45,14 @@ TO_LIB= liblua.a
TO_MAN= lua.1 luac.1 TO_MAN= lua.1 luac.1
# Lua version and release. # Lua version and release.
V= 5.3 V= 5.4
R= $V.3 R= $V.0
# Targets start here. # Targets start here.
all: $(PLAT) all: $(PLAT)
$(PLATS) clean: $(PLATS) help test clean:
cd src && $(MAKE) $@ @cd src && $(MAKE) $@
test: dummy
src/lua -v
install: dummy install: dummy
cd src && $(MKDIR) $(INSTALL_BIN) $(INSTALL_INC) $(INSTALL_LIB) $(INSTALL_MAN) $(INSTALL_LMOD) $(INSTALL_CMOD) cd src && $(MKDIR) $(INSTALL_BIN) $(INSTALL_INC) $(INSTALL_LIB) $(INSTALL_MAN) $(INSTALL_LMOD) $(INSTALL_CMOD)
@ -73,15 +70,10 @@ uninstall:
local: local:
$(MAKE) install INSTALL_TOP=../install $(MAKE) install INSTALL_TOP=../install
none: # make may get confused with install/ if it does not support .PHONY.
@echo "Please do 'make PLATFORM' where PLATFORM is one of these:"
@echo " $(PLATS)"
@echo "See doc/readme.html for complete instructions."
# make may get confused with test/ and install/
dummy: dummy:
# echo config parameters # Echo config parameters.
echo: echo:
@cd src && $(MAKE) -s echo @cd src && $(MAKE) -s echo
@echo "PLAT= $(PLAT)" @echo "PLAT= $(PLAT)"
@ -101,14 +93,14 @@ echo:
@echo "INSTALL_EXEC= $(INSTALL_EXEC)" @echo "INSTALL_EXEC= $(INSTALL_EXEC)"
@echo "INSTALL_DATA= $(INSTALL_DATA)" @echo "INSTALL_DATA= $(INSTALL_DATA)"
# echo pkg-config data # Echo pkg-config data.
pc: pc:
@echo "version=$R" @echo "version=$R"
@echo "prefix=$(INSTALL_TOP)" @echo "prefix=$(INSTALL_TOP)"
@echo "libdir=$(INSTALL_LIB)" @echo "libdir=$(INSTALL_LIB)"
@echo "includedir=$(INSTALL_INC)" @echo "includedir=$(INSTALL_INC)"
# list targets that do not create files (but not all makes understand .PHONY) # Targets that do not create files (not all makes understand .PHONY).
.PHONY: all $(PLATS) clean test install local none dummy echo pecho lecho .PHONY: all $(PLATS) help test clean install uninstall local dummy echo pc
# (end of Makefile) # (end of Makefile)

2
lua-5.3.3/README → lua-5.4.0/README
View File

@ -1,5 +1,5 @@
This is Lua 5.3.3, released on 30 May 2016. This is Lua 5.4.0, released on 18 Jun 2020.
For installation instructions, license details, and For installation instructions, license details, and
further information about Lua, see doc/readme.html. further information about Lua, see doc/readme.html.

110
lua-5.3.3/doc/contents.html → lua-5.4.0/doc/contents.html
View File

@ -1,7 +1,7 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML> <HTML>
<HEAD> <HEAD>
<TITLE>Lua 5.3 Reference Manual - contents</TITLE> <TITLE>Lua 5.4 Reference Manual - contents</TITLE>
<LINK REL="stylesheet" TYPE="text/css" HREF="lua.css"> <LINK REL="stylesheet" TYPE="text/css" HREF="lua.css">
<LINK REL="stylesheet" TYPE="text/css" HREF="index.css"> <LINK REL="stylesheet" TYPE="text/css" HREF="index.css">
<META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1"> <META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1">
@ -11,7 +11,7 @@
<H1> <H1>
<A HREF="http://www.lua.org/"><IMG SRC="logo.gif" ALT="Lua"></A> <A HREF="http://www.lua.org/"><IMG SRC="logo.gif" ALT="Lua"></A>
Lua 5.3 Reference Manual Lua 5.4 Reference Manual
</H1> </H1>
<P> <P>
@ -32,7 +32,7 @@ For a complete introduction to Lua programming, see the book
<P> <P>
<SMALL> <SMALL>
Copyright &copy; 2015&ndash;2016 Lua.org, PUC-Rio. Copyright &copy; 2020 Lua.org, PUC-Rio.
Freely available under the terms of the Freely available under the terms of the
<A HREF="http://www.lua.org/license.html">Lua license</A>. <A HREF="http://www.lua.org/license.html">Lua license</A>.
</SMALL> </SMALL>
@ -49,8 +49,10 @@ Freely available under the terms of the
<LI><A HREF="manual.html#2.4">2.4 &ndash; Metatables and Metamethods</A> <LI><A HREF="manual.html#2.4">2.4 &ndash; Metatables and Metamethods</A>
<LI><A HREF="manual.html#2.5">2.5 &ndash; Garbage Collection</A> <LI><A HREF="manual.html#2.5">2.5 &ndash; Garbage Collection</A>
<UL> <UL>
<LI><A HREF="manual.html#2.5.1">2.5.1 &ndash; Garbage-Collection Metamethods</A> <LI><A HREF="manual.html#2.5.1">2.5.1 &ndash; Incremental Garbage Collection</A>
<LI><A HREF="manual.html#2.5.2">2.5.2 &ndash; Weak Tables</A> <LI><A HREF="manual.html#2.5.2">2.5.2 &ndash; Generational Garbage Collection</A>
<LI><A HREF="manual.html#2.5.3">2.5.3 &ndash; Garbage-Collection Metamethods</A>
<LI><A HREF="manual.html#2.5.4">2.5.4 &ndash; Weak Tables</A>
</UL> </UL>
<LI><A HREF="manual.html#2.6">2.6 &ndash; Coroutines</A> <LI><A HREF="manual.html#2.6">2.6 &ndash; Coroutines</A>
</UL> </UL>
@ -68,6 +70,7 @@ Freely available under the terms of the
<LI><A HREF="manual.html#3.3.5">3.3.5 &ndash; For Statement</A> <LI><A HREF="manual.html#3.3.5">3.3.5 &ndash; For Statement</A>
<LI><A HREF="manual.html#3.3.6">3.3.6 &ndash; Function Calls as Statements</A> <LI><A HREF="manual.html#3.3.6">3.3.6 &ndash; Function Calls as Statements</A>
<LI><A HREF="manual.html#3.3.7">3.3.7 &ndash; Local Declarations</A> <LI><A HREF="manual.html#3.3.7">3.3.7 &ndash; Local Declarations</A>
<LI><A HREF="manual.html#3.3.8">3.3.8 &ndash; To-be-closed Variables</A>
</UL> </UL>
<LI><A HREF="manual.html#3.4">3.4 &ndash; Expressions</A> <LI><A HREF="manual.html#3.4">3.4 &ndash; Expressions</A>
<UL> <UL>
@ -89,14 +92,19 @@ Freely available under the terms of the
<LI><A HREF="manual.html#4">4 &ndash; The Application Program Interface</A> <LI><A HREF="manual.html#4">4 &ndash; The Application Program Interface</A>
<UL> <UL>
<LI><A HREF="manual.html#4.1">4.1 &ndash; The Stack</A> <LI><A HREF="manual.html#4.1">4.1 &ndash; The Stack</A>
<LI><A HREF="manual.html#4.2">4.2 &ndash; Stack Size</A> <UL>
<LI><A HREF="manual.html#4.3">4.3 &ndash; Valid and Acceptable Indices</A> <LI><A HREF="manual.html#4.1.1">4.1.1 &ndash; Stack Size</A>
<LI><A HREF="manual.html#4.4">4.4 &ndash; C Closures</A> <LI><A HREF="manual.html#4.1.2">4.1.2 &ndash; Valid and Acceptable Indices</A>
<LI><A HREF="manual.html#4.5">4.5 &ndash; Registry</A> </UL>
<LI><A HREF="manual.html#4.6">4.6 &ndash; Error Handling in C</A> <LI><A HREF="manual.html#4.2">4.2 &ndash; C Closures</A>
<LI><A HREF="manual.html#4.7">4.7 &ndash; Handling Yields in C</A> <LI><A HREF="manual.html#4.3">4.3 &ndash; Registry</A>
<LI><A HREF="manual.html#4.8">4.8 &ndash; Functions and Types</A> <LI><A HREF="manual.html#4.4">4.4 &ndash; Error Handling in C</A>
<LI><A HREF="manual.html#4.9">4.9 &ndash; The Debug Interface</A> <UL>
<LI><A HREF="manual.html#4.4.1">4.4.1 &ndash; Status Codes</A>
</UL>
<LI><A HREF="manual.html#4.5">4.5 &ndash; Handling Yields in C</A>
<LI><A HREF="manual.html#4.6">4.6 &ndash; Functions and Types</A>
<LI><A HREF="manual.html#4.7">4.7 &ndash; The Debug Interface</A>
</UL> </UL>
<P> <P>
<LI><A HREF="manual.html#5">5 &ndash; The Auxiliary Library</A> <LI><A HREF="manual.html#5">5 &ndash; The Auxiliary Library</A>
@ -104,7 +112,7 @@ Freely available under the terms of the
<LI><A HREF="manual.html#5.1">5.1 &ndash; Functions and Types</A> <LI><A HREF="manual.html#5.1">5.1 &ndash; Functions and Types</A>
</UL> </UL>
<P> <P>
<LI><A HREF="manual.html#6">6 &ndash; Standard Libraries</A> <LI><A HREF="manual.html#6">6 &ndash; The Standard Libraries</A>
<UL> <UL>
<LI><A HREF="manual.html#6.1">6.1 &ndash; Basic Functions</A> <LI><A HREF="manual.html#6.1">6.1 &ndash; Basic Functions</A>
<LI><A HREF="manual.html#6.2">6.2 &ndash; Coroutine Manipulation</A> <LI><A HREF="manual.html#6.2">6.2 &ndash; Coroutine Manipulation</A>
@ -126,9 +134,9 @@ Freely available under the terms of the
<P> <P>
<LI><A HREF="manual.html#8">8 &ndash; Incompatibilities with the Previous Version</A> <LI><A HREF="manual.html#8">8 &ndash; Incompatibilities with the Previous Version</A>
<UL> <UL>
<LI><A HREF="manual.html#8.1">8.1 &ndash; Changes in the Language</A> <LI><A HREF="manual.html#8.1">8.1 &ndash; Incompatibilities in the Language</A>
<LI><A HREF="manual.html#8.2">8.2 &ndash; Changes in the Libraries</A> <LI><A HREF="manual.html#8.2">8.2 &ndash; Incompatibilities in the Libraries</A>
<LI><A HREF="manual.html#8.3">8.3 &ndash; Changes in the API</A> <LI><A HREF="manual.html#8.3">8.3 &ndash; Incompatibilities in the API</A>
</UL> </UL>
<P> <P>
<LI><A HREF="manual.html#9">9 &ndash; The Complete Syntax of Lua</A> <LI><A HREF="manual.html#9">9 &ndash; The Complete Syntax of Lua</A>
@ -165,10 +173,12 @@ Freely available under the terms of the
<A HREF="manual.html#pdf-tonumber">tonumber</A><BR> <A HREF="manual.html#pdf-tonumber">tonumber</A><BR>
<A HREF="manual.html#pdf-tostring">tostring</A><BR> <A HREF="manual.html#pdf-tostring">tostring</A><BR>
<A HREF="manual.html#pdf-type">type</A><BR> <A HREF="manual.html#pdf-type">type</A><BR>
<A HREF="manual.html#pdf-warn">warn</A><BR>
<A HREF="manual.html#pdf-xpcall">xpcall</A><BR> <A HREF="manual.html#pdf-xpcall">xpcall</A><BR>
<P> <P>
<A HREF="manual.html#6.2">coroutine</A><BR> <A HREF="manual.html#6.2">coroutine</A><BR>
<A HREF="manual.html#pdf-coroutine.close">coroutine.close</A><BR>
<A HREF="manual.html#pdf-coroutine.create">coroutine.create</A><BR> <A HREF="manual.html#pdf-coroutine.create">coroutine.create</A><BR>
<A HREF="manual.html#pdf-coroutine.isyieldable">coroutine.isyieldable</A><BR> <A HREF="manual.html#pdf-coroutine.isyieldable">coroutine.isyieldable</A><BR>
<A HREF="manual.html#pdf-coroutine.resume">coroutine.resume</A><BR> <A HREF="manual.html#pdf-coroutine.resume">coroutine.resume</A><BR>
@ -187,6 +197,7 @@ Freely available under the terms of the
<A HREF="manual.html#pdf-debug.getregistry">debug.getregistry</A><BR> <A HREF="manual.html#pdf-debug.getregistry">debug.getregistry</A><BR>
<A HREF="manual.html#pdf-debug.getupvalue">debug.getupvalue</A><BR> <A HREF="manual.html#pdf-debug.getupvalue">debug.getupvalue</A><BR>
<A HREF="manual.html#pdf-debug.getuservalue">debug.getuservalue</A><BR> <A HREF="manual.html#pdf-debug.getuservalue">debug.getuservalue</A><BR>
<A HREF="manual.html#pdf-debug.setcstacklimit">debug.setcstacklimit</A><BR>
<A HREF="manual.html#pdf-debug.sethook">debug.sethook</A><BR> <A HREF="manual.html#pdf-debug.sethook">debug.sethook</A><BR>
<A HREF="manual.html#pdf-debug.setlocal">debug.setlocal</A><BR> <A HREF="manual.html#pdf-debug.setlocal">debug.setlocal</A><BR>
<A HREF="manual.html#pdf-debug.setmetatable">debug.setmetatable</A><BR> <A HREF="manual.html#pdf-debug.setmetatable">debug.setmetatable</A><BR>
@ -318,14 +329,46 @@ Freely available under the terms of the
<A HREF="manual.html#pdf-utf8.len">utf8.len</A><BR> <A HREF="manual.html#pdf-utf8.len">utf8.len</A><BR>
<A HREF="manual.html#pdf-utf8.offset">utf8.offset</A><BR> <A HREF="manual.html#pdf-utf8.offset">utf8.offset</A><BR>
<H3><A NAME="metamethods">metamethods</A></H3>
<P>
<A HREF="manual.html#2.4">__add</A><BR>
<A HREF="manual.html#2.4">__band</A><BR>
<A HREF="manual.html#2.4">__bnot</A><BR>
<A HREF="manual.html#2.4">__bor</A><BR>
<A HREF="manual.html#2.4">__bxor</A><BR>
<A HREF="manual.html#2.4">__call</A><BR>
<A HREF="manual.html#3.3.8">__close</A><BR>
<A HREF="manual.html#2.4">__concat</A><BR>
<A HREF="manual.html#2.4">__div</A><BR>
<A HREF="manual.html#2.4">__eq</A><BR>
<A HREF="manual.html#2.5.3">__gc</A><BR>
<A HREF="manual.html#2.4">__idiv</A><BR>
<A HREF="manual.html#2.4">__index</A><BR>
<A HREF="manual.html#2.4">__le</A><BR>
<A HREF="manual.html#2.4">__len</A><BR>
<A HREF="manual.html#2.4">__lt</A><BR>
<A HREF="manual.html#pdf-getmetatable">__metatable</A><BR>
<A HREF="manual.html#2.4">__mod</A><BR>
<A HREF="manual.html#2.5.4">__mode</A><BR>
<A HREF="manual.html#2.4">__mul</A><BR>
<A HREF="manual.html#luaL_newmetatable">__name</A><BR>
<A HREF="manual.html#2.4">__newindex</A><BR>
<A HREF="manual.html#pdf-pairs">__pairs</A><BR>
<A HREF="manual.html#2.4">__pow</A><BR>
<A HREF="manual.html#2.4">__shl</A><BR>
<A HREF="manual.html#2.4">__shr</A><BR>
<A HREF="manual.html#2.4">__sub</A><BR>
<A HREF="manual.html#pdf-tostring">__tostring</A><BR>
<A HREF="manual.html#2.4">__unm</A><BR>
<H3><A NAME="env">environment<BR>variables</A></H3> <H3><A NAME="env">environment<BR>variables</A></H3>
<P> <P>
<A HREF="manual.html#pdf-LUA_CPATH">LUA_CPATH</A><BR> <A HREF="manual.html#pdf-LUA_CPATH">LUA_CPATH</A><BR>
<A HREF="manual.html#pdf-LUA_CPATH_5_3">LUA_CPATH_5_3</A><BR> <A HREF="manual.html#pdf-LUA_CPATH_5_4">LUA_CPATH_5_4</A><BR>
<A HREF="manual.html#pdf-LUA_INIT">LUA_INIT</A><BR> <A HREF="manual.html#pdf-LUA_INIT">LUA_INIT</A><BR>
<A HREF="manual.html#pdf-LUA_INIT_5_3">LUA_INIT_5_3</A><BR> <A HREF="manual.html#pdf-LUA_INIT_5_4">LUA_INIT_5_4</A><BR>
<A HREF="manual.html#pdf-LUA_PATH">LUA_PATH</A><BR> <A HREF="manual.html#pdf-LUA_PATH">LUA_PATH</A><BR>
<A HREF="manual.html#pdf-LUA_PATH_5_3">LUA_PATH_5_3</A><BR> <A HREF="manual.html#pdf-LUA_PATH_5_4">LUA_PATH_5_4</A><BR>
</TD> </TD>
<TD> <TD>
@ -342,6 +385,7 @@ Freely available under the terms of the
<A HREF="manual.html#lua_Reader">lua_Reader</A><BR> <A HREF="manual.html#lua_Reader">lua_Reader</A><BR>
<A HREF="manual.html#lua_State">lua_State</A><BR> <A HREF="manual.html#lua_State">lua_State</A><BR>
<A HREF="manual.html#lua_Unsigned">lua_Unsigned</A><BR> <A HREF="manual.html#lua_Unsigned">lua_Unsigned</A><BR>
<A HREF="manual.html#lua_WarnFunction">lua_WarnFunction</A><BR>
<A HREF="manual.html#lua_Writer">lua_Writer</A><BR> <A HREF="manual.html#lua_Writer">lua_Writer</A><BR>
<P> <P>
@ -368,13 +412,13 @@ Freely available under the terms of the
<A HREF="manual.html#lua_gethookmask">lua_gethookmask</A><BR> <A HREF="manual.html#lua_gethookmask">lua_gethookmask</A><BR>
<A HREF="manual.html#lua_geti">lua_geti</A><BR> <A HREF="manual.html#lua_geti">lua_geti</A><BR>
<A HREF="manual.html#lua_getinfo">lua_getinfo</A><BR> <A HREF="manual.html#lua_getinfo">lua_getinfo</A><BR>
<A HREF="manual.html#lua_getiuservalue">lua_getiuservalue</A><BR>
<A HREF="manual.html#lua_getlocal">lua_getlocal</A><BR> <A HREF="manual.html#lua_getlocal">lua_getlocal</A><BR>
<A HREF="manual.html#lua_getmetatable">lua_getmetatable</A><BR> <A HREF="manual.html#lua_getmetatable">lua_getmetatable</A><BR>
<A HREF="manual.html#lua_getstack">lua_getstack</A><BR> <A HREF="manual.html#lua_getstack">lua_getstack</A><BR>
<A HREF="manual.html#lua_gettable">lua_gettable</A><BR> <A HREF="manual.html#lua_gettable">lua_gettable</A><BR>
<A HREF="manual.html#lua_gettop">lua_gettop</A><BR> <A HREF="manual.html#lua_gettop">lua_gettop</A><BR>
<A HREF="manual.html#lua_getupvalue">lua_getupvalue</A><BR> <A HREF="manual.html#lua_getupvalue">lua_getupvalue</A><BR>
<A HREF="manual.html#lua_getuservalue">lua_getuservalue</A><BR>
<A HREF="manual.html#lua_insert">lua_insert</A><BR> <A HREF="manual.html#lua_insert">lua_insert</A><BR>
<A HREF="manual.html#lua_isboolean">lua_isboolean</A><BR> <A HREF="manual.html#lua_isboolean">lua_isboolean</A><BR>
<A HREF="manual.html#lua_iscfunction">lua_iscfunction</A><BR> <A HREF="manual.html#lua_iscfunction">lua_iscfunction</A><BR>
@ -395,7 +439,7 @@ Freely available under the terms of the
<A HREF="manual.html#lua_newstate">lua_newstate</A><BR> <A HREF="manual.html#lua_newstate">lua_newstate</A><BR>
<A HREF="manual.html#lua_newtable">lua_newtable</A><BR> <A HREF="manual.html#lua_newtable">lua_newtable</A><BR>
<A HREF="manual.html#lua_newthread">lua_newthread</A><BR> <A HREF="manual.html#lua_newthread">lua_newthread</A><BR>
<A HREF="manual.html#lua_newuserdata">lua_newuserdata</A><BR> <A HREF="manual.html#lua_newuserdatauv">lua_newuserdatauv</A><BR>
<A HREF="manual.html#lua_next">lua_next</A><BR> <A HREF="manual.html#lua_next">lua_next</A><BR>
<A HREF="manual.html#lua_numbertointeger">lua_numbertointeger</A><BR> <A HREF="manual.html#lua_numbertointeger">lua_numbertointeger</A><BR>
<A HREF="manual.html#lua_pcall">lua_pcall</A><BR> <A HREF="manual.html#lua_pcall">lua_pcall</A><BR>
@ -427,23 +471,27 @@ Freely available under the terms of the
<A HREF="manual.html#lua_register">lua_register</A><BR> <A HREF="manual.html#lua_register">lua_register</A><BR>
<A HREF="manual.html#lua_remove">lua_remove</A><BR> <A HREF="manual.html#lua_remove">lua_remove</A><BR>
<A HREF="manual.html#lua_replace">lua_replace</A><BR> <A HREF="manual.html#lua_replace">lua_replace</A><BR>
<A HREF="manual.html#lua_resetthread">lua_resetthread</A><BR>
<A HREF="manual.html#lua_resume">lua_resume</A><BR> <A HREF="manual.html#lua_resume">lua_resume</A><BR>
<A HREF="manual.html#lua_rotate">lua_rotate</A><BR> <A HREF="manual.html#lua_rotate">lua_rotate</A><BR>
<A HREF="manual.html#lua_setallocf">lua_setallocf</A><BR> <A HREF="manual.html#lua_setallocf">lua_setallocf</A><BR>
<A HREF="manual.html#lua_setcstacklimit">lua_setcstacklimit</A><BR>
<A HREF="manual.html#lua_setfield">lua_setfield</A><BR> <A HREF="manual.html#lua_setfield">lua_setfield</A><BR>
<A HREF="manual.html#lua_setglobal">lua_setglobal</A><BR> <A HREF="manual.html#lua_setglobal">lua_setglobal</A><BR>
<A HREF="manual.html#lua_sethook">lua_sethook</A><BR> <A HREF="manual.html#lua_sethook">lua_sethook</A><BR>
<A HREF="manual.html#lua_seti">lua_seti</A><BR> <A HREF="manual.html#lua_seti">lua_seti</A><BR>
<A HREF="manual.html#lua_setiuservalue">lua_setiuservalue</A><BR>
<A HREF="manual.html#lua_setlocal">lua_setlocal</A><BR> <A HREF="manual.html#lua_setlocal">lua_setlocal</A><BR>
<A HREF="manual.html#lua_setmetatable">lua_setmetatable</A><BR> <A HREF="manual.html#lua_setmetatable">lua_setmetatable</A><BR>
<A HREF="manual.html#lua_settable">lua_settable</A><BR> <A HREF="manual.html#lua_settable">lua_settable</A><BR>
<A HREF="manual.html#lua_settop">lua_settop</A><BR> <A HREF="manual.html#lua_settop">lua_settop</A><BR>
<A HREF="manual.html#lua_setupvalue">lua_setupvalue</A><BR> <A HREF="manual.html#lua_setupvalue">lua_setupvalue</A><BR>
<A HREF="manual.html#lua_setuservalue">lua_setuservalue</A><BR> <A HREF="manual.html#lua_setwarnf">lua_setwarnf</A><BR>
<A HREF="manual.html#lua_status">lua_status</A><BR> <A HREF="manual.html#lua_status">lua_status</A><BR>
<A HREF="manual.html#lua_stringtonumber">lua_stringtonumber</A><BR> <A HREF="manual.html#lua_stringtonumber">lua_stringtonumber</A><BR>
<A HREF="manual.html#lua_toboolean">lua_toboolean</A><BR> <A HREF="manual.html#lua_toboolean">lua_toboolean</A><BR>
<A HREF="manual.html#lua_tocfunction">lua_tocfunction</A><BR> <A HREF="manual.html#lua_tocfunction">lua_tocfunction</A><BR>
<A HREF="manual.html#lua_toclose">lua_toclose</A><BR>
<A HREF="manual.html#lua_tointeger">lua_tointeger</A><BR> <A HREF="manual.html#lua_tointeger">lua_tointeger</A><BR>
<A HREF="manual.html#lua_tointegerx">lua_tointegerx</A><BR> <A HREF="manual.html#lua_tointegerx">lua_tointegerx</A><BR>
<A HREF="manual.html#lua_tolstring">lua_tolstring</A><BR> <A HREF="manual.html#lua_tolstring">lua_tolstring</A><BR>
@ -459,6 +507,7 @@ Freely available under the terms of the
<A HREF="manual.html#lua_upvalueindex">lua_upvalueindex</A><BR> <A HREF="manual.html#lua_upvalueindex">lua_upvalueindex</A><BR>
<A HREF="manual.html#lua_upvaluejoin">lua_upvaluejoin</A><BR> <A HREF="manual.html#lua_upvaluejoin">lua_upvaluejoin</A><BR>
<A HREF="manual.html#lua_version">lua_version</A><BR> <A HREF="manual.html#lua_version">lua_version</A><BR>
<A HREF="manual.html#lua_warning">lua_warning</A><BR>
<A HREF="manual.html#lua_xmove">lua_xmove</A><BR> <A HREF="manual.html#lua_xmove">lua_xmove</A><BR>
<A HREF="manual.html#lua_yield">lua_yield</A><BR> <A HREF="manual.html#lua_yield">lua_yield</A><BR>
<A HREF="manual.html#lua_yieldk">lua_yieldk</A><BR> <A HREF="manual.html#lua_yieldk">lua_yieldk</A><BR>
@ -473,14 +522,19 @@ Freely available under the terms of the
<P> <P>
<A HREF="manual.html#luaL_addchar">luaL_addchar</A><BR> <A HREF="manual.html#luaL_addchar">luaL_addchar</A><BR>
<A HREF="manual.html#luaL_addgsub">luaL_addgsub</A><BR>
<A HREF="manual.html#luaL_addlstring">luaL_addlstring</A><BR> <A HREF="manual.html#luaL_addlstring">luaL_addlstring</A><BR>
<A HREF="manual.html#luaL_addsize">luaL_addsize</A><BR> <A HREF="manual.html#luaL_addsize">luaL_addsize</A><BR>
<A HREF="manual.html#luaL_addstring">luaL_addstring</A><BR> <A HREF="manual.html#luaL_addstring">luaL_addstring</A><BR>
<A HREF="manual.html#luaL_addvalue">luaL_addvalue</A><BR> <A HREF="manual.html#luaL_addvalue">luaL_addvalue</A><BR>
<A HREF="manual.html#luaL_argcheck">luaL_argcheck</A><BR> <A HREF="manual.html#luaL_argcheck">luaL_argcheck</A><BR>
<A HREF="manual.html#luaL_argerror">luaL_argerror</A><BR> <A HREF="manual.html#luaL_argerror">luaL_argerror</A><BR>
<A HREF="manual.html#luaL_argexpected">luaL_argexpected</A><BR>
<A HREF="manual.html#luaL_buffaddr">luaL_buffaddr</A><BR>
<A HREF="manual.html#luaL_buffinit">luaL_buffinit</A><BR> <A HREF="manual.html#luaL_buffinit">luaL_buffinit</A><BR>
<A HREF="manual.html#luaL_buffinitsize">luaL_buffinitsize</A><BR> <A HREF="manual.html#luaL_buffinitsize">luaL_buffinitsize</A><BR>
<A HREF="manual.html#luaL_bufflen">luaL_bufflen</A><BR>
<A HREF="manual.html#luaL_buffsub">luaL_buffsub</A><BR>
<A HREF="manual.html#luaL_callmeta">luaL_callmeta</A><BR> <A HREF="manual.html#luaL_callmeta">luaL_callmeta</A><BR>
<A HREF="manual.html#luaL_checkany">luaL_checkany</A><BR> <A HREF="manual.html#luaL_checkany">luaL_checkany</A><BR>
<A HREF="manual.html#luaL_checkinteger">luaL_checkinteger</A><BR> <A HREF="manual.html#luaL_checkinteger">luaL_checkinteger</A><BR>
@ -512,12 +566,14 @@ Freely available under the terms of the
<A HREF="manual.html#luaL_newmetatable">luaL_newmetatable</A><BR> <A HREF="manual.html#luaL_newmetatable">luaL_newmetatable</A><BR>
<A HREF="manual.html#luaL_newstate">luaL_newstate</A><BR> <A HREF="manual.html#luaL_newstate">luaL_newstate</A><BR>
<A HREF="manual.html#luaL_openlibs">luaL_openlibs</A><BR> <A HREF="manual.html#luaL_openlibs">luaL_openlibs</A><BR>
<A HREF="manual.html#luaL_opt">luaL_opt</A><BR>
<A HREF="manual.html#luaL_optinteger">luaL_optinteger</A><BR> <A HREF="manual.html#luaL_optinteger">luaL_optinteger</A><BR>
<A HREF="manual.html#luaL_optlstring">luaL_optlstring</A><BR> <A HREF="manual.html#luaL_optlstring">luaL_optlstring</A><BR>
<A HREF="manual.html#luaL_optnumber">luaL_optnumber</A><BR> <A HREF="manual.html#luaL_optnumber">luaL_optnumber</A><BR>
<A HREF="manual.html#luaL_optstring">luaL_optstring</A><BR> <A HREF="manual.html#luaL_optstring">luaL_optstring</A><BR>
<A HREF="manual.html#luaL_prepbuffer">luaL_prepbuffer</A><BR> <A HREF="manual.html#luaL_prepbuffer">luaL_prepbuffer</A><BR>
<A HREF="manual.html#luaL_prepbuffsize">luaL_prepbuffsize</A><BR> <A HREF="manual.html#luaL_prepbuffsize">luaL_prepbuffsize</A><BR>
<A HREF="manual.html#luaL_pushfail">luaL_pushfail</A><BR>
<A HREF="manual.html#luaL_pushresult">luaL_pushresult</A><BR> <A HREF="manual.html#luaL_pushresult">luaL_pushresult</A><BR>
<A HREF="manual.html#luaL_pushresultsize">luaL_pushresultsize</A><BR> <A HREF="manual.html#luaL_pushresultsize">luaL_pushresultsize</A><BR>
<A HREF="manual.html#luaL_ref">luaL_ref</A><BR> <A HREF="manual.html#luaL_ref">luaL_ref</A><BR>
@ -527,6 +583,7 @@ Freely available under the terms of the
<A HREF="manual.html#luaL_testudata">luaL_testudata</A><BR> <A HREF="manual.html#luaL_testudata">luaL_testudata</A><BR>
<A HREF="manual.html#luaL_tolstring">luaL_tolstring</A><BR> <A HREF="manual.html#luaL_tolstring">luaL_tolstring</A><BR>
<A HREF="manual.html#luaL_traceback">luaL_traceback</A><BR> <A HREF="manual.html#luaL_traceback">luaL_traceback</A><BR>
<A HREF="manual.html#luaL_typeerror">luaL_typeerror</A><BR>
<A HREF="manual.html#luaL_typename">luaL_typename</A><BR> <A HREF="manual.html#luaL_typename">luaL_typename</A><BR>
<A HREF="manual.html#luaL_unref">luaL_unref</A><BR> <A HREF="manual.html#luaL_unref">luaL_unref</A><BR>
<A HREF="manual.html#luaL_where">luaL_where</A><BR> <A HREF="manual.html#luaL_where">luaL_where</A><BR>
@ -548,7 +605,6 @@ Freely available under the terms of the
<P> <P>
<A HREF="manual.html#pdf-LUA_ERRERR">LUA_ERRERR</A><BR> <A HREF="manual.html#pdf-LUA_ERRERR">LUA_ERRERR</A><BR>
<A HREF="manual.html#pdf-LUA_ERRFILE">LUA_ERRFILE</A><BR> <A HREF="manual.html#pdf-LUA_ERRFILE">LUA_ERRFILE</A><BR>
<A HREF="manual.html#pdf-LUA_ERRGCMM">LUA_ERRGCMM</A><BR>
<A HREF="manual.html#pdf-LUA_ERRMEM">LUA_ERRMEM</A><BR> <A HREF="manual.html#pdf-LUA_ERRMEM">LUA_ERRMEM</A><BR>
<A HREF="manual.html#pdf-LUA_ERRRUN">LUA_ERRRUN</A><BR> <A HREF="manual.html#pdf-LUA_ERRRUN">LUA_ERRRUN</A><BR>
<A HREF="manual.html#pdf-LUA_ERRSYNTAX">LUA_ERRSYNTAX</A><BR> <A HREF="manual.html#pdf-LUA_ERRSYNTAX">LUA_ERRSYNTAX</A><BR>
@ -557,6 +613,7 @@ Freely available under the terms of the
<A HREF="manual.html#pdf-LUA_HOOKLINE">LUA_HOOKLINE</A><BR> <A HREF="manual.html#pdf-LUA_HOOKLINE">LUA_HOOKLINE</A><BR>
<A HREF="manual.html#pdf-LUA_HOOKRET">LUA_HOOKRET</A><BR> <A HREF="manual.html#pdf-LUA_HOOKRET">LUA_HOOKRET</A><BR>
<A HREF="manual.html#pdf-LUA_HOOKTAILCALL">LUA_HOOKTAILCALL</A><BR> <A HREF="manual.html#pdf-LUA_HOOKTAILCALL">LUA_HOOKTAILCALL</A><BR>
<A HREF="manual.html#pdf-LUAL_BUFFERSIZE">LUAL_BUFFERSIZE</A><BR>
<A HREF="manual.html#pdf-LUA_MASKCALL">LUA_MASKCALL</A><BR> <A HREF="manual.html#pdf-LUA_MASKCALL">LUA_MASKCALL</A><BR>
<A HREF="manual.html#pdf-LUA_MASKCOUNT">LUA_MASKCOUNT</A><BR> <A HREF="manual.html#pdf-LUA_MASKCOUNT">LUA_MASKCOUNT</A><BR>
<A HREF="manual.html#pdf-LUA_MASKLINE">LUA_MASKLINE</A><BR> <A HREF="manual.html#pdf-LUA_MASKLINE">LUA_MASKLINE</A><BR>
@ -600,7 +657,6 @@ Freely available under the terms of the
<A HREF="manual.html#pdf-LUA_TUSERDATA">LUA_TUSERDATA</A><BR> <A HREF="manual.html#pdf-LUA_TUSERDATA">LUA_TUSERDATA</A><BR>
<A HREF="manual.html#pdf-LUA_USE_APICHECK">LUA_USE_APICHECK</A><BR> <A HREF="manual.html#pdf-LUA_USE_APICHECK">LUA_USE_APICHECK</A><BR>
<A HREF="manual.html#pdf-LUA_YIELD">LUA_YIELD</A><BR> <A HREF="manual.html#pdf-LUA_YIELD">LUA_YIELD</A><BR>
<A HREF="manual.html#pdf-LUAL_BUFFERSIZE">LUAL_BUFFERSIZE</A><BR>
</TD> </TD>
</TR> </TR>
@ -608,10 +664,10 @@ Freely available under the terms of the
<P CLASS="footer"> <P CLASS="footer">
Last update: Last update:
Thu Jan 14 10:14:28 BRST 2016 Sat May 30 08:22:18 -03 2020
</P> </P>
<!-- <!--
Last change: revised for Lua 5.3.3 Last change: revised for Lua 5.4.0 (final)
--> -->
</BODY> </BODY>

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@ -0,0 +1,149 @@
.\" $Id: lua.man,v 1.14 2020/05/21 19:31:21 lhf Exp $
.TH LUA 1 "$Date: 2020/05/21 19:31:21 $"
.SH NAME
lua \- Lua interpreter
.SH SYNOPSIS
.B lua
[
.I options
]
[
.I script
[
.I args
]
]
.SH DESCRIPTION
.B lua
is the standalone Lua interpreter.
It loads and executes Lua programs,
either in textual source form or
in precompiled binary form.
(Precompiled binaries are output by
.BR luac ,
the Lua compiler.)
.B lua
can be used as a batch interpreter and also interactively.
.LP
After handling the
.IR options ,
the Lua program in file
.I script
is loaded and executed.
The
.I args
are available to
.I script
as strings in a global table named
.B arg
and also as arguments to its main function.
When called without arguments,
.B lua
behaves as
.B "lua \-v \-i"
if the standard input is a terminal,
and as
.B "lua \-"
otherwise.
.LP
In interactive mode,
.B lua
prompts the user,
reads lines from the standard input,
and executes them as they are read.
If the line contains an expression,
then the line is evaluated and the result is printed.
If a line does not contain a complete statement,
then a secondary prompt is displayed and
lines are read until a complete statement is formed or
a syntax error is found.
.LP
Before handling command line options and scripts,
.B lua
checks the contents of the environment variables
.B LUA_INIT_5_4
and
.BR LUA_INIT ,
in that order.
If the contents are of the form
.RI '@ filename ',
then
.I filename
is executed.
Otherwise, the contents are assumed to be a Lua statement and is executed.
When
.B LUA_INIT_5_4
is defined,
.B LUA_INIT
is ignored.
.SH OPTIONS
.TP
.BI \-e " stat"
execute statement
.IR stat .
.TP
.B \-i
enter interactive mode after executing
.IR script .
.TP
.BI \-l " name"
require library
.I name
into global
.IR name .
.TP
.B \-v
show version information.
.TP
.B \-E
ignore environment variables.
.TP
.B \-W
turn warnings on.
.TP
.B \-\-
stop handling options.
.TP
.B \-
stop handling options and execute the standard input as a file.
.SH ENVIRONMENT VARIABLES
The following environment variables affect the execution of
.BR lua .
When defined,
the version-specific variants take priority
and the version-neutral variants are ignored.
.TP
.B LUA_INIT, LUA_INIT_5_4
Code to be executed before command line options and scripts.
.TP
.B LUA_PATH, LUA_PATH_5_4
Initial value of package.cpath,
the path used by require to search for Lua loaders.
.TP
.B LUA_CPATH, LUA_CPATH_5_4
Initial value of package.cpath,
the path used by require to search for C loaders.
.SH EXIT STATUS
If a script calls os.exit,
then
.B lua
exits with the given exit status.
Otherwise,
.B lua
exits
with EXIT_SUCCESS (0 on POSIX systems) if there were no errors
and
with EXIT_FAILURE (1 on POSIX systems) if there were errors.
Errors raised in interactive mode do not cause exits.
.SH DIAGNOSTICS
Error messages should be self explanatory.
.SH "SEE ALSO"
.BR luac (1)
.br
The documentation at lua.org,
especially section 7 of the reference manual.
.SH AUTHORS
R. Ierusalimschy,
L. H. de Figueiredo,
W. Celes
.\" EOF

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@ -10,7 +10,7 @@ body {
line-height: 1.25 ; line-height: 1.25 ;
margin: 16px auto ; margin: 16px auto ;
padding: 32px ; padding: 32px ;
border: solid #a0a0a0 1px ; border: solid #ccc 1px ;
border-radius: 20px ; border-radius: 20px ;
max-width: 70em ; max-width: 70em ;
width: 90% ; width: 90% ;
@ -111,36 +111,29 @@ pre.session {
border-radius: 8px ; border-radius: 8px ;
} }
td.gutter { table {
width: 4% ;
}
table.columns {
border: none ; border: none ;
border-spacing: 0 ; border-spacing: 0 ;
border-collapse: collapse ; border-collapse: collapse ;
} }
td {
padding: 0 ;
margin: 0 ;
}
td.gutter {
width: 4% ;
}
table.columns td { table.columns td {
vertical-align: top ; vertical-align: top ;
padding: 0 ;
padding-bottom: 1em ; padding-bottom: 1em ;
text-align: justify ; text-align: justify ;
line-height: 1.25 ; line-height: 1.25 ;
} }
p.logos a:link:hover, p.logos a:visited:hover {
background-color: inherit ;
}
table.book {
border: none ;
border-spacing: 0 ;
border-collapse: collapse ;
}
table.book td { table.book td {
padding: 0 ;
vertical-align: top ; vertical-align: top ;
} }
@ -159,6 +152,10 @@ table.book span {
margin-top: 0.25em ; margin-top: 0.25em ;
} }
p.logos a:link:hover, p.logos a:visited:hover {
background-color: inherit ;
}
img { img {
background-color: white ; background-color: white ;
} }

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@ -1,7 +1,7 @@
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML> <HTML>
<HEAD> <HEAD>
<TITLE>Lua 5.3 readme</TITLE> <TITLE>Lua 5.4 readme</TITLE>
<LINK REL="stylesheet" TYPE="text/css" HREF="lua.css"> <LINK REL="stylesheet" TYPE="text/css" HREF="lua.css">
<META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1"> <META HTTP-EQUIV="content-type" CONTENT="text/html; charset=iso-8859-1">
<STYLE TYPE="text/css"> <STYLE TYPE="text/css">
@ -30,7 +30,7 @@ tt, kbd, code {
<H1> <H1>
<A HREF="http://www.lua.org/"><IMG SRC="logo.gif" ALT="Lua"></A> <A HREF="http://www.lua.org/"><IMG SRC="logo.gif" ALT="Lua"></A>
Welcome to Lua 5.3 Welcome to Lua 5.4
</H1> </H1>
<DIV CLASS="menubar"> <DIV CLASS="menubar">
@ -47,7 +47,7 @@ Welcome to Lua 5.3
<H2><A NAME="about">About Lua</A></H2> <H2><A NAME="about">About Lua</A></H2>
<P> <P>
Lua is a powerful, fast, lightweight, embeddable scripting language Lua is a powerful, efficient, lightweight, embeddable scripting language
developed by a developed by a
<A HREF="http://www.lua.org/authors.html">team</A> <A HREF="http://www.lua.org/authors.html">team</A>
at at
@ -55,7 +55,9 @@ at
the Pontifical Catholic University of Rio de Janeiro in Brazil. the Pontifical Catholic University of Rio de Janeiro in Brazil.
Lua is Lua is
<A HREF="#license">free software</A> <A HREF="#license">free software</A>
used in many products and projects around the world. used in
<A HREF="http://www.lua.org/uses.html">many products and projects</A>
around the world.
<P> <P>
Lua's Lua's
@ -69,7 +71,7 @@ and
updated updated
<A HREF="http://www.lua.org/docs.html">documentation</A>, <A HREF="http://www.lua.org/docs.html">documentation</A>,
especially the especially the
<A HREF="http://www.lua.org/manual/5.3/">reference manual</A>, <A HREF="http://www.lua.org/manual/5.4/">reference manual</A>,
which may differ slightly from the which may differ slightly from the
<A HREF="contents.html">local copy</A> <A HREF="contents.html">local copy</A>
distributed in this package. distributed in this package.
@ -85,7 +87,8 @@ because
Lua is implemented in pure ANSI C and compiles unmodified in all known Lua is implemented in pure ANSI C and compiles unmodified in all known
platforms that have an ANSI C compiler. platforms that have an ANSI C compiler.
Lua also compiles unmodified as C++. Lua also compiles unmodified as C++.
The instructions given below for building Lua are for Unix-like platforms. The instructions given below for building Lua are for Unix-like platforms,
such as Linux and Mac OS X.
See also See also
<A HREF="#other">instructions for other systems</A> <A HREF="#other">instructions for other systems</A>
and and
@ -101,21 +104,24 @@ a multi-platform distribution of Lua that includes batteries.
<H3>Building Lua</H3> <H3>Building Lua</H3>
<P> <P>
In most Unix-like platforms, simply do "<KBD>make</KBD>" with a suitable target. In most common Unix-like platforms, simply do "<KBD>make</KBD>".
Here are the details. Here are the details.
<OL> <OL>
<LI> <LI>
Open a terminal window and move to Open a terminal window and move to
the top-level directory, which is named <TT>lua-5.3.x</TT>. the top-level directory, which is named <TT>lua-5.4.0</TT>.
The <TT>Makefile</TT> there controls both the build process and the installation process. The <TT>Makefile</TT> there controls both the build process and the installation process.
<P> <P>
<LI> <LI>
Do "<KBD>make</KBD>" and see if your platform is listed. Do "<KBD>make</KBD>". The <TT>Makefile</TT> will guess your platform and build Lua for it.
<P>
<LI>
If the guess failed, do "<KBD>make help</KBD>" and see if your platform is listed.
The platforms currently supported are: The platforms currently supported are:
<P> <P>
<P CLASS="display"> <P CLASS="display">
aix bsd c89 freebsd generic linux macosx mingw posix solaris guess aix bsd c89 freebsd generic linux linux-readline macosx mingw posix solaris
</P> </P>
<P> <P>
If your platform is listed, just do "<KBD>make xxx</KBD>", where xxx If your platform is listed, just do "<KBD>make xxx</KBD>", where xxx
@ -136,25 +142,27 @@ and liblua.a (the library).
after building Lua. This will run the interpreter and print its version. after building Lua. This will run the interpreter and print its version.
</OL> </OL>
<P> <P>
If you're running Linux and get compilation errors, If you're running Linux, try "<KBD>make linux-readline</KBD>" to build the interactive Lua interpreter with handy line-editing and history capabilities.
If you get compilation errors,
make sure you have installed the <TT>readline</TT> development package make sure you have installed the <TT>readline</TT> development package
(which is probably named <TT>libreadline-dev</TT> or <TT>readline-devel</TT>). (which is probably named <TT>libreadline-dev</TT> or <TT>readline-devel</TT>).
If you get link errors after that, If you get link errors after that,
then try "<KBD>make linux MYLIBS=-ltermcap</KBD>". then try "<KBD>make linux-readline MYLIBS=-ltermcap</KBD>".
<H3>Installing Lua</H3> <H3>Installing Lua</H3>
<P> <P>
Once you have built Lua, you may want to install it in an official Once you have built Lua, you may want to install it in an official
place in your system. In this case, do "<KBD>make install</KBD>". The official place in your system. In this case, do "<KBD>make install</KBD>". The official
place and the way to install files are defined in the <TT>Makefile</TT>. You'll place and the way to install files are defined in the <TT>Makefile</TT>. You'll
probably need the right permissions to install files. probably need the right permissions to install files, and so may need to do "<KBD>sudo make install</KBD>".
<P> <P>
To build and install Lua in one step, do "<KBD>make xxx install</KBD>", To build and install Lua in one step, do "<KBD>make all install</KBD>",
or "<KBD>make xxx install</KBD>",
where xxx is your platform name. where xxx is your platform name.
<P> <P>
To install Lua locally, do "<KBD>make local</KBD>". To install Lua locally after building it, do "<KBD>make local</KBD>".
This will create a directory <TT>install</TT> with subdirectories This will create a directory <TT>install</TT> with subdirectories
<TT>bin</TT>, <TT>include</TT>, <TT>lib</TT>, <TT>man</TT>, <TT>share</TT>, <TT>bin</TT>, <TT>include</TT>, <TT>lib</TT>, <TT>man</TT>, <TT>share</TT>,
and install Lua as listed below. and install Lua as listed below.
@ -223,11 +231,8 @@ then try "<KBD>make linux MYLIBS=-ltermcap</KBD>".
<DT> <DT>
library: library:
<DD> <DD>
lapi.c lcode.c lctype.c ldebug.c ldo.c ldump.c lfunc.c lgc.c llex.c lapi.c lcode.c lctype.c ldebug.c ldo.c ldump.c lfunc.c lgc.c llex.c lmem.c lobject.c lopcodes.c lparser.c lstate.c lstring.c ltable.c ltm.c lundump.c lvm.c lzio.c
lmem.c lobject.c lopcodes.c lparser.c lstate.c lstring.c ltable.c lauxlib.c lbaselib.c lcorolib.c ldblib.c liolib.c lmathlib.c loadlib.c loslib.c lstrlib.c ltablib.c lutf8lib.c linit.c
ltm.c lundump.c lvm.c lzio.c
lauxlib.c lbaselib.c lbitlib.c lcorolib.c ldblib.c liolib.c
lmathlib.c loslib.c lstrlib.c ltablib.c lutf8lib.c loadlib.c linit.c
<DT> <DT>
interpreter: interpreter:
<DD> <DD>
@ -239,9 +244,9 @@ compiler:
</DL> </DL>
<P> <P>
To use Lua as a library in your own programs you'll need to know how to To use Lua as a library in your own programs, you'll need to know how to
create and use libraries with your compiler. Moreover, to dynamically load create and use libraries with your compiler. Moreover, to dynamically load
C libraries for Lua you'll need to know how to create dynamic libraries C libraries for Lua, you'll need to know how to create dynamic libraries
and you'll need to make sure that the Lua API functions are accessible to and you'll need to make sure that the Lua API functions are accessible to
those dynamic libraries &mdash; but <EM>don't</EM> link the Lua library those dynamic libraries &mdash; but <EM>don't</EM> link the Lua library
into each dynamic library. For Unix, we recommend that the Lua library into each dynamic library. For Unix, we recommend that the Lua library
@ -254,9 +259,9 @@ compiler:
As mentioned above, you may edit <TT>src/luaconf.h</TT> to customize As mentioned above, you may edit <TT>src/luaconf.h</TT> to customize
some features before building Lua. some features before building Lua.
<H2><A NAME="changes">Changes since Lua 5.2</A></H2> <H2><A NAME="changes">Changes since Lua 5.3</A></H2>
<P> <P>
Here are the main changes introduced in Lua 5.3. Here are the main changes introduced in Lua 5.4.
The The
<A HREF="contents.html">reference manual</A> <A HREF="contents.html">reference manual</A>
lists the lists the
@ -264,50 +269,20 @@ lists the
<H3>Main changes</H3> <H3>Main changes</H3>
<UL> <UL>
<LI> integers (64-bit by default) <LI> new generational mode for garbage collection
<LI> official support for 32-bit numbers <LI> to-be-closed variables
<LI> bitwise operators <LI> const variables
<LI> basic utf-8 support <LI> userdata can have multiple user values
<LI> functions for packing and unpacking values <LI> new implementation for math.random
<LI> warning system
</UL> <LI> debug information about function arguments and returns
<LI> new semantics for the integer 'for' loop
Here are the other changes introduced in Lua 5.3: <LI> optional 'init' argument to 'string.gmatch'
<H3>Language</H3> <LI> new functions 'lua_resetthread' and 'coroutine.close'
<UL> <LI> string-to-number coercions moved to the string library
<LI> userdata can have any Lua value as uservalue <LI> allocation function allowed to fail when shrinking a memory block
<LI> floor division <LI> new format '%p' in 'string.format'
<LI> more flexible rules for some metamethods <LI> utf8 library accepts codepoints up to 2^31
</UL>
<H3>Libraries</H3>
<UL>
<LI> <CODE>ipairs</CODE> and the table library respect metamethods
<LI> strip option in <CODE>string.dump</CODE>
<LI> table library respects metamethods
<LI> new function <CODE>table.move</CODE>
<LI> new function <CODE>string.pack</CODE>
<LI> new function <CODE>string.unpack</CODE>
<LI> new function <CODE>string.packsize</CODE>
</UL>
<H3>C API</H3>
<UL>
<LI> simpler API for continuation functions in C
<LI> <CODE>lua_gettable</CODE> and similar functions return type of resulted value
<LI> strip option in <CODE>lua_dump</CODE>
<LI> new function: <CODE>lua_geti</CODE>
<LI> new function: <CODE>lua_seti</CODE>
<LI> new function: <CODE>lua_isyieldable</CODE>
<LI> new function: <CODE>lua_numbertointeger</CODE>
<LI> new function: <CODE>lua_rotate</CODE>
<LI> new function: <CODE>lua_stringtonumber</CODE>
</UL>
<H3>Lua standalone interpreter</H3>
<UL>
<LI> can be used as calculator; no need to prefix with '='
<LI> <CODE>arg</CODE> table available to all code
</UL> </UL>
<H2><A NAME="license">License</A></H2> <H2><A NAME="license">License</A></H2>
@ -328,7 +303,7 @@ For details, see
<A HREF="http://www.lua.org/license.html">this</A>. <A HREF="http://www.lua.org/license.html">this</A>.
<BLOCKQUOTE STYLE="padding-bottom: 0em"> <BLOCKQUOTE STYLE="padding-bottom: 0em">
Copyright &copy; 1994&ndash;2016 Lua.org, PUC-Rio. Copyright &copy; 1994&ndash;2020 Lua.org, PUC-Rio.
<P> <P>
Permission is hereby granted, free of charge, to any person obtaining a copy Permission is hereby granted, free of charge, to any person obtaining a copy
@ -355,10 +330,10 @@ THE SOFTWARE.
<P CLASS="footer"> <P CLASS="footer">
Last update: Last update:
Tue Feb 2 22:25:27 BRST 2016 Fri May 1 19:33:31 UTC 2020
</P> </P>
<!-- <!--
Last change: revised for Lua 5.3.3 Last change: revised for Lua 5.4.0 (final)
--> -->
</BODY> </BODY>

83
lua-5.3.3/src/Makefile → lua-5.4.0/src/Makefile
View File

@ -4,16 +4,17 @@
# == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT ======================= # == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================
# Your platform. See PLATS for possible values. # Your platform. See PLATS for possible values.
PLAT= none PLAT= guess
CC= gcc -std=gnu99 CC= gcc -std=gnu99
CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_2 $(SYSCFLAGS) $(MYCFLAGS) CFLAGS= -O2 -Wall -Wextra -DLUA_COMPAT_5_3 $(SYSCFLAGS) $(MYCFLAGS)
LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS) LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
LIBS= -lm $(SYSLIBS) $(MYLIBS) LIBS= -lm $(SYSLIBS) $(MYLIBS)
AR= ar rcu AR= ar rcu
RANLIB= ranlib RANLIB= ranlib
RM= rm -f RM= rm -f
UNAME= uname
SYSCFLAGS= SYSCFLAGS=
SYSLDFLAGS= SYSLDFLAGS=
@ -24,16 +25,16 @@ MYLDFLAGS=
MYLIBS= MYLIBS=
MYOBJS= MYOBJS=
# Special flags for compiler modules; -Os reduces code size.
CMCFLAGS= -Os
# == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE ======= # == END OF USER SETTINGS -- NO NEED TO CHANGE ANYTHING BELOW THIS LINE =======
PLATS= aix bsd c89 freebsd generic linux macosx mingw posix solaris PLATS= guess aix bsd c89 freebsd generic linux linux-readline macosx mingw posix solaris
LUA_A= liblua.a LUA_A= liblua.a
CORE_O= lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \ CORE_O= lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o lundump.o lvm.o lzio.o
lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \ LIB_O= lauxlib.o lbaselib.o lcorolib.o ldblib.o liolib.o lmathlib.o loadlib.o loslib.o lstrlib.o ltablib.o lutf8lib.o linit.o
ltm.o lundump.o lvm.o lzio.o
LIB_O= lauxlib.o lbaselib.o lbitlib.o lcorolib.o ldblib.o liolib.o \
lmathlib.o loslib.o lstrlib.o ltablib.o lutf8lib.o loadlib.o linit.o
BASE_O= $(CORE_O) $(LIB_O) $(MYOBJS) BASE_O= $(CORE_O) $(LIB_O) $(MYOBJS)
LUA_T= lua LUA_T= lua
@ -65,6 +66,9 @@ $(LUA_T): $(LUA_O) $(LUA_A)
$(LUAC_T): $(LUAC_O) $(LUA_A) $(LUAC_T): $(LUAC_O) $(LUA_A)
$(CC) -o $@ $(LDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS) $(CC) -o $@ $(LDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS)
test:
./lua -v
clean: clean:
$(RM) $(ALL_T) $(ALL_O) $(RM) $(ALL_T) $(ALL_O)
@ -80,15 +84,21 @@ echo:
@echo "AR= $(AR)" @echo "AR= $(AR)"
@echo "RANLIB= $(RANLIB)" @echo "RANLIB= $(RANLIB)"
@echo "RM= $(RM)" @echo "RM= $(RM)"
@echo "UNAME= $(UNAME)"
# Convenience targets for popular platforms # Convenience targets for popular platforms.
ALL= all ALL= all
none: help:
@echo "Please do 'make PLATFORM' where PLATFORM is one of these:" @echo "Do 'make PLATFORM' where PLATFORM is one of these:"
@echo " $(PLATS)" @echo " $(PLATS)"
@echo "See doc/readme.html for complete instructions."
aix: guess:
@echo Guessing `$(UNAME)`
@$(MAKE) `$(UNAME)`
AIX aix:
$(MAKE) $(ALL) CC="xlc" CFLAGS="-O2 -DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-ldl" SYSLDFLAGS="-brtl -bexpall" $(MAKE) $(ALL) CC="xlc" CFLAGS="-O2 -DLUA_USE_POSIX -DLUA_USE_DLOPEN" SYSLIBS="-ldl" SYSLDFLAGS="-brtl -bexpall"
bsd: bsd:
@ -100,20 +110,24 @@ c89:
@echo '*** C89 does not guarantee 64-bit integers for Lua.' @echo '*** C89 does not guarantee 64-bit integers for Lua.'
@echo '' @echo ''
FreeBSD NetBSD OpenBSD freebsd:
freebsd: $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX -DLUA_USE_READLINE -I/usr/include/edit" SYSLIBS="-Wl,-E -ledit" CC="cc"
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -lreadline"
generic: $(ALL) generic: $(ALL)
linux: Linux linux: linux-noreadline
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl -lreadline"
macosx: linux-noreadline:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX" SYSLIBS="-lreadline" CC=cc $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX" SYSLIBS="-Wl,-E -ldl"
linux-readline:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_LINUX -DLUA_USE_READLINE" SYSLIBS="-Wl,-E -ldl -lreadline"
Darwin macos macosx:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_MACOSX -DLUA_USE_READLINE" SYSLIBS="-lreadline"
mingw: mingw:
$(MAKE) "LUA_A=lua53.dll" "LUA_T=lua.exe" \ $(MAKE) "LUA_A=lua54.dll" "LUA_T=lua.exe" \
"AR=$(CC) -shared -o" "RANLIB=strip --strip-unneeded" \ "AR=$(CC) -shared -o" "RANLIB=strip --strip-unneeded" \
"SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe "SYSCFLAGS=-DLUA_BUILD_AS_DLL" "SYSLIBS=" "SYSLDFLAGS=-s" lua.exe
$(MAKE) "LUAC_T=luac.exe" luac.exe $(MAKE) "LUAC_T=luac.exe" luac.exe
@ -121,11 +135,21 @@ mingw:
posix: posix:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX" $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX"
solaris: SunOS solaris:
$(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN -D_REENTRANT" SYSLIBS="-ldl" $(MAKE) $(ALL) SYSCFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN -D_REENTRANT" SYSLIBS="-ldl"
# list targets that do not create files (but not all makes understand .PHONY) # Targets that do not create files (not all makes understand .PHONY).
.PHONY: all $(PLATS) default o a clean depend echo none .PHONY: all $(PLATS) help test clean default o a depend echo
# Compiler modules may use special flags.
llex.o:
$(CC) $(CFLAGS) $(CMCFLAGS) -c llex.c
lparser.o:
$(CC) $(CFLAGS) $(CMCFLAGS) -c lparser.c
lcode.o:
$(CC) $(CFLAGS) $(CMCFLAGS) -c lcode.c
# DO NOT DELETE # DO NOT DELETE
@ -134,7 +158,6 @@ lapi.o: lapi.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
ltable.h lundump.h lvm.h ltable.h lundump.h lvm.h
lauxlib.o: lauxlib.c lprefix.h lua.h luaconf.h lauxlib.h lauxlib.o: lauxlib.c lprefix.h lua.h luaconf.h lauxlib.h
lbaselib.o: lbaselib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h lbaselib.o: lbaselib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lbitlib.o: lbitlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lcode.o: lcode.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \ lcode.o: lcode.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \
llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \ llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \
ldo.h lgc.h lstring.h ltable.h lvm.h ldo.h lgc.h lstring.h ltable.h lvm.h
@ -149,8 +172,8 @@ ldo.o: ldo.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
lparser.h lstring.h ltable.h lundump.h lvm.h lparser.h lstring.h ltable.h lundump.h lvm.h
ldump.o: ldump.c lprefix.h lua.h luaconf.h lobject.h llimits.h lstate.h \ ldump.o: ldump.c lprefix.h lua.h luaconf.h lobject.h llimits.h lstate.h \
ltm.h lzio.h lmem.h lundump.h ltm.h lzio.h lmem.h lundump.h
lfunc.o: lfunc.c lprefix.h lua.h luaconf.h lfunc.h lobject.h llimits.h \ lfunc.o: lfunc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
lgc.h lstate.h ltm.h lzio.h lmem.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h
lgc.o: lgc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ lgc.o: lgc.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h
linit.o: linit.c lprefix.h lua.h luaconf.h lualib.h lauxlib.h linit.o: linit.c lprefix.h lua.h luaconf.h lualib.h lauxlib.h
@ -180,17 +203,17 @@ ltable.o: ltable.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
ltablib.o: ltablib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h ltablib.o: ltablib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
ltm.o: ltm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ ltm.o: ltm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h ltable.h lvm.h llimits.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
lua.o: lua.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h lua.o: lua.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
luac.o: luac.c lprefix.h lua.h luaconf.h lauxlib.h lobject.h llimits.h \ luac.o: luac.c lprefix.h lua.h luaconf.h lauxlib.h ldebug.h lstate.h \
lstate.h ltm.h lzio.h lmem.h lundump.h ldebug.h lopcodes.h lobject.h llimits.h ltm.h lzio.h lmem.h lopcodes.h lopnames.h lundump.h
lundump.o: lundump.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \ lundump.o: lundump.c lprefix.h lua.h luaconf.h ldebug.h lstate.h \
lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h \ lobject.h llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h \
lundump.h lundump.h
lutf8lib.o: lutf8lib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h lutf8lib.o: lutf8lib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
lvm.o: lvm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \ lvm.o: lvm.c lprefix.h lua.h luaconf.h ldebug.h lstate.h lobject.h \
llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h \ llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h \
ltable.h lvm.h ltable.h lvm.h ljumptab.h
lzio.o: lzio.c lprefix.h lua.h luaconf.h llimits.h lmem.h lstate.h \ lzio.o: lzio.c lprefix.h lua.h luaconf.h llimits.h lmem.h lstate.h \
lobject.h ltm.h lzio.h lobject.h ltm.h lzio.h

661
lua-5.3.3/src/lapi.c → lua-5.4.0/src/lapi.c
View File

File diff suppressed because it is too large Load Diff

47
lua-5.4.0/src/lapi.h Normal file
View File

@ -0,0 +1,47 @@
/*
** $Id: lapi.h $
** Auxiliary functions from Lua API
** See Copyright Notice in lua.h
*/
#ifndef lapi_h
#define lapi_h
#include "llimits.h"
#include "lstate.h"
/* Increments 'L->top', checking for stack overflows */
#define api_incr_top(L) {L->top++; api_check(L, L->top <= L->ci->top, \
"stack overflow");}
/*
** If a call returns too many multiple returns, the callee may not have
** stack space to accommodate all results. In this case, this macro
** increases its stack space ('L->ci->top').
*/
#define adjustresults(L,nres) \
{ if ((nres) <= LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; }
/* Ensure the stack has at least 'n' elements */
#define api_checknelems(L,n) api_check(L, (n) < (L->top - L->ci->func), \
"not enough elements in the stack")
/*
** To reduce the overhead of returning from C functions, the presence of
** to-be-closed variables in these functions is coded in the CallInfo's
** field 'nresults', in a way that functions with no to-be-closed variables
** with zero, one, or "all" wanted results have no overhead. Functions
** with other number of wanted results, as well as functions with
** variables to be closed, have an extra check.
*/
#define hastocloseCfunc(n) ((n) < LUA_MULTRET)
#define codeNresults(n) (-(n) - 3)
#endif

394
lua-5.3.3/src/lauxlib.c → lua-5.4.0/src/lauxlib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lauxlib.c,v 1.286 2016/01/08 15:33:09 roberto Exp $ ** $Id: lauxlib.c $
** Auxiliary functions for building Lua libraries ** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -27,6 +27,12 @@
#include "lauxlib.h" #include "lauxlib.h"
#if !defined(MAX_SIZET)
/* maximum value for size_t */
#define MAX_SIZET ((size_t)(~(size_t)0))
#endif
/* /*
** {====================================================== ** {======================================================
** Traceback ** Traceback
@ -40,8 +46,8 @@
/* /*
** search for 'objidx' in table at index -1. ** Search for 'objidx' in table at index -1. ('objidx' must be an
** return 1 + string at top if find a good name. ** absolute index.) Return 1 + string at top if it found a good name.
*/ */
static int findfield (lua_State *L, int objidx, int level) { static int findfield (lua_State *L, int objidx, int level) {
if (level == 0 || !lua_istable(L, -1)) if (level == 0 || !lua_istable(L, -1))
@ -54,10 +60,10 @@ static int findfield (lua_State *L, int objidx, int level) {
return 1; return 1;
} }
else if (findfield(L, objidx, level - 1)) { /* try recursively */ else if (findfield(L, objidx, level - 1)) { /* try recursively */
lua_remove(L, -2); /* remove table (but keep name) */ /* stack: lib_name, lib_table, field_name (top) */
lua_pushliteral(L, "."); lua_pushliteral(L, "."); /* place '.' between the two names */
lua_insert(L, -2); /* place '.' between the two names */ lua_replace(L, -3); /* (in the slot occupied by table) */
lua_concat(L, 3); lua_concat(L, 3); /* lib_name.field_name */
return 1; return 1;
} }
} }
@ -69,20 +75,19 @@ static int findfield (lua_State *L, int objidx, int level) {
/* /*
** Search for a name for a function in all loaded modules ** Search for a name for a function in all loaded modules
** (registry._LOADED).
*/ */
static int pushglobalfuncname (lua_State *L, lua_Debug *ar) { static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
int top = lua_gettop(L); int top = lua_gettop(L);
lua_getinfo(L, "f", ar); /* push function */ lua_getinfo(L, "f", ar); /* push function */
lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED"); lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
if (findfield(L, top + 1, 2)) { if (findfield(L, top + 1, 2)) {
const char *name = lua_tostring(L, -1); const char *name = lua_tostring(L, -1);
if (strncmp(name, "_G.", 3) == 0) { /* name start with '_G.'? */ if (strncmp(name, LUA_GNAME ".", 3) == 0) { /* name start with '_G.'? */
lua_pushstring(L, name + 3); /* push name without prefix */ lua_pushstring(L, name + 3); /* push name without prefix */
lua_remove(L, -2); /* remove original name */ lua_remove(L, -2); /* remove original name */
} }
lua_copy(L, -1, top + 1); /* move name to proper place */ lua_copy(L, -1, top + 1); /* copy name to proper place */
lua_pop(L, 2); /* remove pushed values */ lua_settop(L, top + 1); /* remove table "loaded" and name copy */
return 1; return 1;
} }
else { else {
@ -125,32 +130,37 @@ static int lastlevel (lua_State *L) {
LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1, LUALIB_API void luaL_traceback (lua_State *L, lua_State *L1,
const char *msg, int level) { const char *msg, int level) {
luaL_Buffer b;
lua_Debug ar; lua_Debug ar;
int top = lua_gettop(L);
int last = lastlevel(L1); int last = lastlevel(L1);
int n1 = (last - level > LEVELS1 + LEVELS2) ? LEVELS1 : -1; int limit2show = (last - level > LEVELS1 + LEVELS2) ? LEVELS1 : -1;
if (msg) luaL_buffinit(L, &b);
lua_pushfstring(L, "%s\n", msg); if (msg) {
luaL_checkstack(L, 10, NULL); luaL_addstring(&b, msg);
lua_pushliteral(L, "stack traceback:"); luaL_addchar(&b, '\n');
}
luaL_addstring(&b, "stack traceback:");
while (lua_getstack(L1, level++, &ar)) { while (lua_getstack(L1, level++, &ar)) {
if (n1-- == 0) { /* too many levels? */ if (limit2show-- == 0) { /* too many levels? */
lua_pushliteral(L, "\n\t..."); /* add a '...' */ int n = last - level - LEVELS2 + 1; /* number of levels to skip */
level = last - LEVELS2 + 1; /* and skip to last ones */ lua_pushfstring(L, "\n\t...\t(skipping %d levels)", n);
luaL_addvalue(&b); /* add warning about skip */
level += n; /* and skip to last levels */
} }
else { else {
lua_getinfo(L1, "Slnt", &ar); lua_getinfo(L1, "Slnt", &ar);
lua_pushfstring(L, "\n\t%s:", ar.short_src); if (ar.currentline <= 0)
if (ar.currentline > 0) lua_pushfstring(L, "\n\t%s: in ", ar.short_src);
lua_pushfstring(L, "%d:", ar.currentline); else
lua_pushliteral(L, " in "); lua_pushfstring(L, "\n\t%s:%d: in ", ar.short_src, ar.currentline);
luaL_addvalue(&b);
pushfuncname(L, &ar); pushfuncname(L, &ar);
luaL_addvalue(&b);
if (ar.istailcall) if (ar.istailcall)
lua_pushliteral(L, "\n\t(...tail calls...)"); luaL_addstring(&b, "\n\t(...tail calls...)");
lua_concat(L, lua_gettop(L) - top);
} }
} }
lua_concat(L, lua_gettop(L) - top); luaL_pushresult(&b);
} }
/* }====================================================== */ /* }====================================================== */
@ -180,7 +190,7 @@ LUALIB_API int luaL_argerror (lua_State *L, int arg, const char *extramsg) {
} }
static int typeerror (lua_State *L, int arg, const char *tname) { int luaL_typeerror (lua_State *L, int arg, const char *tname) {
const char *msg; const char *msg;
const char *typearg; /* name for the type of the actual argument */ const char *typearg; /* name for the type of the actual argument */
if (luaL_getmetafield(L, arg, "__name") == LUA_TSTRING) if (luaL_getmetafield(L, arg, "__name") == LUA_TSTRING)
@ -195,7 +205,7 @@ static int typeerror (lua_State *L, int arg, const char *tname) {
static void tag_error (lua_State *L, int arg, int tag) { static void tag_error (lua_State *L, int arg, int tag) {
typeerror(L, arg, lua_typename(L, tag)); luaL_typeerror(L, arg, lua_typename(L, tag));
} }
@ -239,7 +249,7 @@ LUALIB_API int luaL_fileresult (lua_State *L, int stat, const char *fname) {
return 1; return 1;
} }
else { else {
lua_pushnil(L); luaL_pushfail(L);
if (fname) if (fname)
lua_pushfstring(L, "%s: %s", fname, strerror(en)); lua_pushfstring(L, "%s: %s", fname, strerror(en));
else else
@ -274,23 +284,24 @@ LUALIB_API int luaL_fileresult (lua_State *L, int stat, const char *fname) {
LUALIB_API int luaL_execresult (lua_State *L, int stat) { LUALIB_API int luaL_execresult (lua_State *L, int stat) {
const char *what = "exit"; /* type of termination */ const char *what = "exit"; /* type of termination */
if (stat == -1) /* error? */ if (stat != 0 && errno != 0) /* error with an 'errno'? */
return luaL_fileresult(L, 0, NULL); return luaL_fileresult(L, 0, NULL);
else { else {
l_inspectstat(stat, what); /* interpret result */ l_inspectstat(stat, what); /* interpret result */
if (*what == 'e' && stat == 0) /* successful termination? */ if (*what == 'e' && stat == 0) /* successful termination? */
lua_pushboolean(L, 1); lua_pushboolean(L, 1);
else else
lua_pushnil(L); luaL_pushfail(L);
lua_pushstring(L, what); lua_pushstring(L, what);
lua_pushinteger(L, stat); lua_pushinteger(L, stat);
return 3; /* return true/nil,what,code */ return 3; /* return true/fail,what,code */
} }
} }
/* }====================================================== */ /* }====================================================== */
/* /*
** {====================================================== ** {======================================================
** Userdata's metatable manipulation ** Userdata's metatable manipulation
@ -333,7 +344,7 @@ LUALIB_API void *luaL_testudata (lua_State *L, int ud, const char *tname) {
LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) { LUALIB_API void *luaL_checkudata (lua_State *L, int ud, const char *tname) {
void *p = luaL_testudata(L, ud, tname); void *p = luaL_testudata(L, ud, tname);
if (p == NULL) typeerror(L, ud, tname); luaL_argexpected(L, p != NULL, ud, tname);
return p; return p;
} }
@ -464,10 +475,8 @@ static void *resizebox (lua_State *L, int idx, size_t newsize) {
lua_Alloc allocf = lua_getallocf(L, &ud); lua_Alloc allocf = lua_getallocf(L, &ud);
UBox *box = (UBox *)lua_touserdata(L, idx); UBox *box = (UBox *)lua_touserdata(L, idx);
void *temp = allocf(ud, box->box, box->bsize, newsize); void *temp = allocf(ud, box->box, box->bsize, newsize);
if (temp == NULL && newsize > 0) { /* allocation error? */ if (temp == NULL && newsize > 0) /* allocation error? */
resizebox(L, idx, 0); /* free buffer */ luaL_error(L, "not enough memory");
luaL_error(L, "not enough memory for buffer allocation");
}
box->box = temp; box->box = temp;
box->bsize = newsize; box->bsize = newsize;
return temp; return temp;
@ -480,16 +489,20 @@ static int boxgc (lua_State *L) {
} }
static void *newbox (lua_State *L, size_t newsize) { static const luaL_Reg boxmt[] = { /* box metamethods */
UBox *box = (UBox *)lua_newuserdata(L, sizeof(UBox)); {"__gc", boxgc},
{"__close", boxgc},
{NULL, NULL}
};
static void newbox (lua_State *L) {
UBox *box = (UBox *)lua_newuserdatauv(L, sizeof(UBox), 0);
box->box = NULL; box->box = NULL;
box->bsize = 0; box->bsize = 0;
if (luaL_newmetatable(L, "LUABOX")) { /* creating metatable? */ if (luaL_newmetatable(L, "_UBOX*")) /* creating metatable? */
lua_pushcfunction(L, boxgc); luaL_setfuncs(L, boxmt, 0); /* set its metamethods */
lua_setfield(L, -2, "__gc"); /* metatable.__gc = boxgc */
}
lua_setmetatable(L, -2); lua_setmetatable(L, -2);
return resizebox(L, -1, newsize);
} }
@ -497,38 +510,64 @@ static void *newbox (lua_State *L, size_t newsize) {
** check whether buffer is using a userdata on the stack as a temporary ** check whether buffer is using a userdata on the stack as a temporary
** buffer ** buffer
*/ */
#define buffonstack(B) ((B)->b != (B)->initb) #define buffonstack(B) ((B)->b != (B)->init.b)
/*
** Compute new size for buffer 'B', enough to accommodate extra 'sz'
** bytes.
*/
static size_t newbuffsize (luaL_Buffer *B, size_t sz) {
size_t newsize = B->size * 2; /* double buffer size */
if (MAX_SIZET - sz < B->n) /* overflow in (B->n + sz)? */
return luaL_error(B->L, "buffer too large");
if (newsize < B->n + sz) /* double is not big enough? */
newsize = B->n + sz;
return newsize;
}
/*
** Returns a pointer to a free area with at least 'sz' bytes in buffer
** 'B'. 'boxidx' is the relative position in the stack where the
** buffer's box is or should be.
*/
static char *prepbuffsize (luaL_Buffer *B, size_t sz, int boxidx) {
if (B->size - B->n >= sz) /* enough space? */
return B->b + B->n;
else {
lua_State *L = B->L;
char *newbuff;
size_t newsize = newbuffsize(B, sz);
/* create larger buffer */
if (buffonstack(B)) /* buffer already has a box? */
newbuff = (char *)resizebox(L, boxidx, newsize); /* resize it */
else { /* no box yet */
lua_pushnil(L); /* reserve slot for final result */
newbox(L); /* create a new box */
/* move box (and slot) to its intended position */
lua_rotate(L, boxidx - 1, 2);
lua_toclose(L, boxidx);
newbuff = (char *)resizebox(L, boxidx, newsize);
memcpy(newbuff, B->b, B->n * sizeof(char)); /* copy original content */
}
B->b = newbuff;
B->size = newsize;
return newbuff + B->n;
}
}
/* /*
** returns a pointer to a free area with at least 'sz' bytes ** returns a pointer to a free area with at least 'sz' bytes
*/ */
LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) { LUALIB_API char *luaL_prepbuffsize (luaL_Buffer *B, size_t sz) {
lua_State *L = B->L; return prepbuffsize(B, sz, -1);
if (B->size - B->n < sz) { /* not enough space? */
char *newbuff;
size_t newsize = B->size * 2; /* double buffer size */
if (newsize - B->n < sz) /* not big enough? */
newsize = B->n + sz;
if (newsize < B->n || newsize - B->n < sz)
luaL_error(L, "buffer too large");
/* create larger buffer */
if (buffonstack(B))
newbuff = (char *)resizebox(L, -1, newsize);
else { /* no buffer yet */
newbuff = (char *)newbox(L, newsize);
memcpy(newbuff, B->b, B->n * sizeof(char)); /* copy original content */
}
B->b = newbuff;
B->size = newsize;
}
return &B->b[B->n];
} }
LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) { LUALIB_API void luaL_addlstring (luaL_Buffer *B, const char *s, size_t l) {
if (l > 0) { /* avoid 'memcpy' when 's' can be NULL */ if (l > 0) { /* avoid 'memcpy' when 's' can be NULL */
char *b = luaL_prepbuffsize(B, l); char *b = prepbuffsize(B, l, -1);
memcpy(b, s, l * sizeof(char)); memcpy(b, s, l * sizeof(char));
luaL_addsize(B, l); luaL_addsize(B, l);
} }
@ -544,8 +583,8 @@ LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
lua_State *L = B->L; lua_State *L = B->L;
lua_pushlstring(L, B->b, B->n); lua_pushlstring(L, B->b, B->n);
if (buffonstack(B)) { if (buffonstack(B)) {
resizebox(L, -2, 0); /* delete old buffer */ lua_copy(L, -1, -3); /* move string to reserved slot */
lua_remove(L, -2); /* remove its header from the stack */ lua_pop(L, 2); /* pop string and box (closing the box) */
} }
} }
@ -556,20 +595,29 @@ LUALIB_API void luaL_pushresultsize (luaL_Buffer *B, size_t sz) {
} }
/*
** 'luaL_addvalue' is the only function in the Buffer system where the
** box (if existent) is not on the top of the stack. So, instead of
** calling 'luaL_addlstring', it replicates the code using -2 as the
** last argument to 'prepbuffsize', signaling that the box is (or will
** be) bellow the string being added to the buffer. (Box creation can
** trigger an emergency GC, so we should not remove the string from the
** stack before we have the space guaranteed.)
*/
LUALIB_API void luaL_addvalue (luaL_Buffer *B) { LUALIB_API void luaL_addvalue (luaL_Buffer *B) {
lua_State *L = B->L; lua_State *L = B->L;
size_t l; size_t len;
const char *s = lua_tolstring(L, -1, &l); const char *s = lua_tolstring(L, -1, &len);
if (buffonstack(B)) char *b = prepbuffsize(B, len, -2);
lua_insert(L, -2); /* put value below buffer */ memcpy(b, s, len * sizeof(char));
luaL_addlstring(B, s, l); luaL_addsize(B, len);
lua_remove(L, (buffonstack(B)) ? -2 : -1); /* remove value */ lua_pop(L, 1); /* pop string */
} }
LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) { LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) {
B->L = L; B->L = L;
B->b = B->initb; B->b = B->init.b;
B->n = 0; B->n = 0;
B->size = LUAL_BUFFERSIZE; B->size = LUAL_BUFFERSIZE;
} }
@ -577,7 +625,7 @@ LUALIB_API void luaL_buffinit (lua_State *L, luaL_Buffer *B) {
LUALIB_API char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz) { LUALIB_API char *luaL_buffinitsize (lua_State *L, luaL_Buffer *B, size_t sz) {
luaL_buffinit(L, B); luaL_buffinit(L, B);
return luaL_prepbuffsize(B, sz); return prepbuffsize(B, sz, -1);
} }
/* }====================================================== */ /* }====================================================== */
@ -809,13 +857,17 @@ LUALIB_API lua_Integer luaL_len (lua_State *L, int idx) {
LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) { LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
if (!luaL_callmeta(L, idx, "__tostring")) { /* no metafield? */ if (luaL_callmeta(L, idx, "__tostring")) { /* metafield? */
if (!lua_isstring(L, -1))
luaL_error(L, "'__tostring' must return a string");
}
else {
switch (lua_type(L, idx)) { switch (lua_type(L, idx)) {
case LUA_TNUMBER: { case LUA_TNUMBER: {
if (lua_isinteger(L, idx)) if (lua_isinteger(L, idx))
lua_pushfstring(L, "%I", lua_tointeger(L, idx)); lua_pushfstring(L, "%I", (LUAI_UACINT)lua_tointeger(L, idx));
else else
lua_pushfstring(L, "%f", lua_tonumber(L, idx)); lua_pushfstring(L, "%f", (LUAI_UACNUMBER)lua_tonumber(L, idx));
break; break;
} }
case LUA_TSTRING: case LUA_TSTRING:
@ -827,97 +879,21 @@ LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
case LUA_TNIL: case LUA_TNIL:
lua_pushliteral(L, "nil"); lua_pushliteral(L, "nil");
break; break;
default: default: {
lua_pushfstring(L, "%s: %p", luaL_typename(L, idx), int tt = luaL_getmetafield(L, idx, "__name"); /* try name */
lua_topointer(L, idx)); const char *kind = (tt == LUA_TSTRING) ? lua_tostring(L, -1) :
luaL_typename(L, idx);
lua_pushfstring(L, "%s: %p", kind, lua_topointer(L, idx));
if (tt != LUA_TNIL)
lua_remove(L, -2); /* remove '__name' */
break; break;
}
} }
} }
return lua_tolstring(L, -1, len); return lua_tolstring(L, -1, len);
} }
/*
** {======================================================
** Compatibility with 5.1 module functions
** =======================================================
*/
#if defined(LUA_COMPAT_MODULE)
static const char *luaL_findtable (lua_State *L, int idx,
const char *fname, int szhint) {
const char *e;
if (idx) lua_pushvalue(L, idx);
do {
e = strchr(fname, '.');
if (e == NULL) e = fname + strlen(fname);
lua_pushlstring(L, fname, e - fname);
if (lua_rawget(L, -2) == LUA_TNIL) { /* no such field? */
lua_pop(L, 1); /* remove this nil */
lua_createtable(L, 0, (*e == '.' ? 1 : szhint)); /* new table for field */
lua_pushlstring(L, fname, e - fname);
lua_pushvalue(L, -2);
lua_settable(L, -4); /* set new table into field */
}
else if (!lua_istable(L, -1)) { /* field has a non-table value? */
lua_pop(L, 2); /* remove table and value */
return fname; /* return problematic part of the name */
}
lua_remove(L, -2); /* remove previous table */
fname = e + 1;
} while (*e == '.');
return NULL;
}
/*
** Count number of elements in a luaL_Reg list.
*/
static int libsize (const luaL_Reg *l) {
int size = 0;
for (; l && l->name; l++) size++;
return size;
}
/*
** Find or create a module table with a given name. The function
** first looks at the _LOADED table and, if that fails, try a
** global variable with that name. In any case, leaves on the stack
** the module table.
*/
LUALIB_API void luaL_pushmodule (lua_State *L, const char *modname,
int sizehint) {
luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1); /* get _LOADED table */
if (lua_getfield(L, -1, modname) != LUA_TTABLE) { /* no _LOADED[modname]? */
lua_pop(L, 1); /* remove previous result */
/* try global variable (and create one if it does not exist) */
lua_pushglobaltable(L);
if (luaL_findtable(L, 0, modname, sizehint) != NULL)
luaL_error(L, "name conflict for module '%s'", modname);
lua_pushvalue(L, -1);
lua_setfield(L, -3, modname); /* _LOADED[modname] = new table */
}
lua_remove(L, -2); /* remove _LOADED table */
}
LUALIB_API void luaL_openlib (lua_State *L, const char *libname,
const luaL_Reg *l, int nup) {
luaL_checkversion(L);
if (libname) {
luaL_pushmodule(L, libname, libsize(l)); /* get/create library table */
lua_insert(L, -(nup + 1)); /* move library table to below upvalues */
}
if (l)
luaL_setfuncs(L, l, nup);
else
lua_pop(L, nup); /* remove upvalues */
}
#endif
/* }====================================================== */
/* /*
** set functions from list 'l' into table at top - 'nup'; each ** set functions from list 'l' into table at top - 'nup'; each
** function gets the 'nup' elements at the top as upvalues. ** function gets the 'nup' elements at the top as upvalues.
@ -926,10 +902,14 @@ LUALIB_API void luaL_openlib (lua_State *L, const char *libname,
LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) { LUALIB_API void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) {
luaL_checkstack(L, nup, "too many upvalues"); luaL_checkstack(L, nup, "too many upvalues");
for (; l->name != NULL; l++) { /* fill the table with given functions */ for (; l->name != NULL; l++) { /* fill the table with given functions */
int i; if (l->func == NULL) /* place holder? */
for (i = 0; i < nup; i++) /* copy upvalues to the top */ lua_pushboolean(L, 0);
lua_pushvalue(L, -nup); else {
lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */ int i;
for (i = 0; i < nup; i++) /* copy upvalues to the top */
lua_pushvalue(L, -nup);
lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */
}
lua_setfield(L, -(nup + 2), l->name); lua_setfield(L, -(nup + 2), l->name);
} }
lua_pop(L, nup); /* remove upvalues */ lua_pop(L, nup); /* remove upvalues */
@ -962,17 +942,17 @@ LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) {
*/ */
LUALIB_API void luaL_requiref (lua_State *L, const char *modname, LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
lua_CFunction openf, int glb) { lua_CFunction openf, int glb) {
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED"); luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_getfield(L, -1, modname); /* _LOADED[modname] */ lua_getfield(L, -1, modname); /* LOADED[modname] */
if (!lua_toboolean(L, -1)) { /* package not already loaded? */ if (!lua_toboolean(L, -1)) { /* package not already loaded? */
lua_pop(L, 1); /* remove field */ lua_pop(L, 1); /* remove field */
lua_pushcfunction(L, openf); lua_pushcfunction(L, openf);
lua_pushstring(L, modname); /* argument to open function */ lua_pushstring(L, modname); /* argument to open function */
lua_call(L, 1, 1); /* call 'openf' to open module */ lua_call(L, 1, 1); /* call 'openf' to open module */
lua_pushvalue(L, -1); /* make copy of module (call result) */ lua_pushvalue(L, -1); /* make copy of module (call result) */
lua_setfield(L, -3, modname); /* _LOADED[modname] = module */ lua_setfield(L, -3, modname); /* LOADED[modname] = module */
} }
lua_remove(L, -2); /* remove _LOADED table */ lua_remove(L, -2); /* remove LOADED table */
if (glb) { if (glb) {
lua_pushvalue(L, -1); /* copy of module */ lua_pushvalue(L, -1); /* copy of module */
lua_setglobal(L, modname); /* _G[modname] = module */ lua_setglobal(L, modname); /* _G[modname] = module */
@ -980,18 +960,24 @@ LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
} }
LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p, LUALIB_API void luaL_addgsub (luaL_Buffer *b, const char *s,
const char *r) { const char *p, const char *r) {
const char *wild; const char *wild;
size_t l = strlen(p); size_t l = strlen(p);
luaL_Buffer b;
luaL_buffinit(L, &b);
while ((wild = strstr(s, p)) != NULL) { while ((wild = strstr(s, p)) != NULL) {
luaL_addlstring(&b, s, wild - s); /* push prefix */ luaL_addlstring(b, s, wild - s); /* push prefix */
luaL_addstring(&b, r); /* push replacement in place of pattern */ luaL_addstring(b, r); /* push replacement in place of pattern */
s = wild + l; /* continue after 'p' */ s = wild + l; /* continue after 'p' */
} }
luaL_addstring(&b, s); /* push last suffix */ luaL_addstring(b, s); /* push last suffix */
}
LUALIB_API const char *luaL_gsub (lua_State *L, const char *s,
const char *p, const char *r) {
luaL_Buffer b;
luaL_buffinit(L, &b);
luaL_addgsub(&b, s, p, r);
luaL_pushresult(&b); luaL_pushresult(&b);
return lua_tostring(L, -1); return lua_tostring(L, -1);
} }
@ -1009,27 +995,63 @@ static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
static int panic (lua_State *L) { static int panic (lua_State *L) {
const char *msg = lua_tostring(L, -1);
if (msg == NULL) msg = "error object is not a string";
lua_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n", lua_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n",
lua_tostring(L, -1)); msg);
return 0; /* return to Lua to abort */ return 0; /* return to Lua to abort */
} }
/*
** Emit a warning. '*warnstate' means:
** 0 - warning system is off;
** 1 - ready to start a new message;
** 2 - previous message is to be continued.
*/
static void warnf (void *ud, const char *message, int tocont) {
int *warnstate = (int *)ud;
if (*warnstate != 2 && !tocont && *message == '@') { /* control message? */
if (strcmp(message, "@off") == 0)
*warnstate = 0;
else if (strcmp(message, "@on") == 0)
*warnstate = 1;
return;
}
else if (*warnstate == 0) /* warnings off? */
return;
if (*warnstate == 1) /* previous message was the last? */
lua_writestringerror("%s", "Lua warning: "); /* start a new warning */
lua_writestringerror("%s", message); /* write message */
if (tocont) /* not the last part? */
*warnstate = 2; /* to be continued */
else { /* last part */
lua_writestringerror("%s", "\n"); /* finish message with end-of-line */
*warnstate = 1; /* ready to start a new message */
}
}
LUALIB_API lua_State *luaL_newstate (void) { LUALIB_API lua_State *luaL_newstate (void) {
lua_State *L = lua_newstate(l_alloc, NULL); lua_State *L = lua_newstate(l_alloc, NULL);
if (L) lua_atpanic(L, &panic); if (L) {
int *warnstate; /* space for warning state */
lua_atpanic(L, &panic);
warnstate = (int *)lua_newuserdatauv(L, sizeof(int), 0);
luaL_ref(L, LUA_REGISTRYINDEX); /* make sure it won't be collected */
*warnstate = 0; /* default is warnings off */
lua_setwarnf(L, warnf, warnstate);
}
return L; return L;
} }
LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver, size_t sz) { LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver, size_t sz) {
const lua_Number *v = lua_version(L); lua_Number v = lua_version(L);
if (sz != LUAL_NUMSIZES) /* check numeric types */ if (sz != LUAL_NUMSIZES) /* check numeric types */
luaL_error(L, "core and library have incompatible numeric types"); luaL_error(L, "core and library have incompatible numeric types");
if (v != lua_version(NULL)) else if (v != ver)
luaL_error(L, "multiple Lua VMs detected");
else if (*v != ver)
luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f", luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f",
ver, *v); (LUAI_UACNUMBER)ver, (LUAI_UACNUMBER)v);
} }

64
lua-5.3.3/src/lauxlib.h → lua-5.4.0/src/lauxlib.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lauxlib.h,v 1.129 2015/11/23 11:29:43 roberto Exp $ ** $Id: lauxlib.h $
** Auxiliary functions for building Lua libraries ** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -15,11 +15,25 @@
#include "lua.h" #include "lua.h"
/* global table */
#define LUA_GNAME "_G"
/* extra error code for 'luaL_load' */
typedef struct luaL_Buffer luaL_Buffer;
/* extra error code for 'luaL_loadfilex' */
#define LUA_ERRFILE (LUA_ERRERR+1) #define LUA_ERRFILE (LUA_ERRERR+1)
/* key, in the registry, for table of loaded modules */
#define LUA_LOADED_TABLE "_LOADED"
/* key, in the registry, for table of preloaded loaders */
#define LUA_PRELOAD_TABLE "_PRELOAD"
typedef struct luaL_Reg { typedef struct luaL_Reg {
const char *name; const char *name;
lua_CFunction func; lua_CFunction func;
@ -36,6 +50,7 @@ LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e); LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len); LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg); LUALIB_API int (luaL_argerror) (lua_State *L, int arg, const char *extramsg);
LUALIB_API int (luaL_typeerror) (lua_State *L, int arg, const char *tname);
LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg, LUALIB_API const char *(luaL_checklstring) (lua_State *L, int arg,
size_t *l); size_t *l);
LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg, LUALIB_API const char *(luaL_optlstring) (lua_State *L, int arg,
@ -65,6 +80,7 @@ LUALIB_API int (luaL_checkoption) (lua_State *L, int arg, const char *def,
LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname); LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
LUALIB_API int (luaL_execresult) (lua_State *L, int stat); LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
/* predefined references */ /* predefined references */
#define LUA_NOREF (-2) #define LUA_NOREF (-2)
#define LUA_REFNIL (-1) #define LUA_REFNIL (-1)
@ -85,8 +101,10 @@ LUALIB_API lua_State *(luaL_newstate) (void);
LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx); LUALIB_API lua_Integer (luaL_len) (lua_State *L, int idx);
LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p, LUALIB_API void luaL_addgsub (luaL_Buffer *b, const char *s,
const char *r); const char *p, const char *r);
LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s,
const char *p, const char *r);
LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
@ -113,6 +131,10 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
#define luaL_argcheck(L, cond,arg,extramsg) \ #define luaL_argcheck(L, cond,arg,extramsg) \
((void)((cond) || luaL_argerror(L, (arg), (extramsg)))) ((void)((cond) || luaL_argerror(L, (arg), (extramsg))))
#define luaL_argexpected(L,cond,arg,tname) \
((void)((cond) || luaL_typeerror(L, (arg), (tname))))
#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL)) #define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL)) #define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
@ -131,19 +153,30 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
#define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL) #define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL)
/* push the value used to represent failure/error */
#define luaL_pushfail(L) lua_pushnil(L)
/* /*
** {====================================================== ** {======================================================
** Generic Buffer manipulation ** Generic Buffer manipulation
** ======================================================= ** =======================================================
*/ */
typedef struct luaL_Buffer { struct luaL_Buffer {
char *b; /* buffer address */ char *b; /* buffer address */
size_t size; /* buffer size */ size_t size; /* buffer size */
size_t n; /* number of characters in buffer */ size_t n; /* number of characters in buffer */
lua_State *L; lua_State *L;
char initb[LUAL_BUFFERSIZE]; /* initial buffer */ union {
} luaL_Buffer; LUAI_MAXALIGN; /* ensure maximum alignment for buffer */
char b[LUAL_BUFFERSIZE]; /* initial buffer */
} init;
};
#define luaL_bufflen(bf) ((bf)->n)
#define luaL_buffaddr(bf) ((bf)->b)
#define luaL_addchar(B,c) \ #define luaL_addchar(B,c) \
@ -152,6 +185,8 @@ typedef struct luaL_Buffer {
#define luaL_addsize(B,s) ((B)->n += (s)) #define luaL_addsize(B,s) ((B)->n += (s))
#define luaL_buffsub(B,s) ((B)->n -= (s))
LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B); LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l); LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
@ -189,21 +224,6 @@ typedef struct luaL_Stream {
/* }====================================================== */ /* }====================================================== */
/* compatibility with old module system */
#if defined(LUA_COMPAT_MODULE)
LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,
int sizehint);
LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
const luaL_Reg *l, int nup);
#define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0))
#endif
/* /*
** {================================================================== ** {==================================================================
** "Abstraction Layer" for basic report of messages and errors ** "Abstraction Layer" for basic report of messages and errors

139
lua-5.3.3/src/lbaselib.c → lua-5.4.0/src/lbaselib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lbaselib.c,v 1.313 2016/04/11 19:18:40 roberto Exp $ ** $Id: lbaselib.c $
** Basic library ** Basic library
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -24,18 +24,12 @@
static int luaB_print (lua_State *L) { static int luaB_print (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */ int n = lua_gettop(L); /* number of arguments */
int i; int i;
lua_getglobal(L, "tostring"); for (i = 1; i <= n; i++) { /* for each argument */
for (i=1; i<=n; i++) {
const char *s;
size_t l; size_t l;
lua_pushvalue(L, -1); /* function to be called */ const char *s = luaL_tolstring(L, i, &l); /* convert it to string */
lua_pushvalue(L, i); /* value to print */ if (i > 1) /* not the first element? */
lua_call(L, 1, 1); lua_writestring("\t", 1); /* add a tab before it */
s = lua_tolstring(L, -1, &l); /* get result */ lua_writestring(s, l); /* print it */
if (s == NULL)
return luaL_error(L, "'tostring' must return a string to 'print'");
if (i>1) lua_writestring("\t", 1);
lua_writestring(s, l);
lua_pop(L, 1); /* pop result */ lua_pop(L, 1); /* pop result */
} }
lua_writeline(); lua_writeline();
@ -43,13 +37,31 @@ static int luaB_print (lua_State *L) {
} }
/*
** Creates a warning with all given arguments.
** Check first for errors; otherwise an error may interrupt
** the composition of a warning, leaving it unfinished.
*/
static int luaB_warn (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int i;
luaL_checkstring(L, 1); /* at least one argument */
for (i = 2; i <= n; i++)
luaL_checkstring(L, i); /* make sure all arguments are strings */
for (i = 1; i < n; i++) /* compose warning */
lua_warning(L, lua_tostring(L, i), 1);
lua_warning(L, lua_tostring(L, n), 0); /* close warning */
return 0;
}
#define SPACECHARS " \f\n\r\t\v" #define SPACECHARS " \f\n\r\t\v"
static const char *b_str2int (const char *s, int base, lua_Integer *pn) { static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
lua_Unsigned n = 0; lua_Unsigned n = 0;
int neg = 0; int neg = 0;
s += strspn(s, SPACECHARS); /* skip initial spaces */ s += strspn(s, SPACECHARS); /* skip initial spaces */
if (*s == '-') { s++; neg = 1; } /* handle signal */ if (*s == '-') { s++; neg = 1; } /* handle sign */
else if (*s == '+') s++; else if (*s == '+') s++;
if (!isalnum((unsigned char)*s)) /* no digit? */ if (!isalnum((unsigned char)*s)) /* no digit? */
return NULL; return NULL;
@ -68,7 +80,6 @@ static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
static int luaB_tonumber (lua_State *L) { static int luaB_tonumber (lua_State *L) {
if (lua_isnoneornil(L, 2)) { /* standard conversion? */ if (lua_isnoneornil(L, 2)) { /* standard conversion? */
luaL_checkany(L, 1);
if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */ if (lua_type(L, 1) == LUA_TNUMBER) { /* already a number? */
lua_settop(L, 1); /* yes; return it */ lua_settop(L, 1); /* yes; return it */
return 1; return 1;
@ -79,6 +90,7 @@ static int luaB_tonumber (lua_State *L) {
if (s != NULL && lua_stringtonumber(L, s) == l + 1) if (s != NULL && lua_stringtonumber(L, s) == l + 1)
return 1; /* successful conversion to number */ return 1; /* successful conversion to number */
/* else not a number */ /* else not a number */
luaL_checkany(L, 1); /* (but there must be some parameter) */
} }
} }
else { else {
@ -94,7 +106,7 @@ static int luaB_tonumber (lua_State *L) {
return 1; return 1;
} /* else not a number */ } /* else not a number */
} /* else not a number */ } /* else not a number */
lua_pushnil(L); /* not a number */ luaL_pushfail(L); /* not a number */
return 1; return 1;
} }
@ -125,8 +137,7 @@ static int luaB_getmetatable (lua_State *L) {
static int luaB_setmetatable (lua_State *L) { static int luaB_setmetatable (lua_State *L) {
int t = lua_type(L, 2); int t = lua_type(L, 2);
luaL_checktype(L, 1, LUA_TTABLE); luaL_checktype(L, 1, LUA_TTABLE);
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
"nil or table expected");
if (luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL) if (luaL_getmetafield(L, 1, "__metatable") != LUA_TNIL)
return luaL_error(L, "cannot change a protected metatable"); return luaL_error(L, "cannot change a protected metatable");
lua_settop(L, 2); lua_settop(L, 2);
@ -145,8 +156,8 @@ static int luaB_rawequal (lua_State *L) {
static int luaB_rawlen (lua_State *L) { static int luaB_rawlen (lua_State *L) {
int t = lua_type(L, 1); int t = lua_type(L, 1);
luaL_argcheck(L, t == LUA_TTABLE || t == LUA_TSTRING, 1, luaL_argexpected(L, t == LUA_TTABLE || t == LUA_TSTRING, 1,
"table or string expected"); "table or string");
lua_pushinteger(L, lua_rawlen(L, 1)); lua_pushinteger(L, lua_rawlen(L, 1));
return 1; return 1;
} }
@ -170,27 +181,58 @@ static int luaB_rawset (lua_State *L) {
} }
static int pushmode (lua_State *L, int oldmode) {
lua_pushstring(L, (oldmode == LUA_GCINC) ? "incremental" : "generational");
return 1;
}
static int luaB_collectgarbage (lua_State *L) { static int luaB_collectgarbage (lua_State *L) {
static const char *const opts[] = {"stop", "restart", "collect", static const char *const opts[] = {"stop", "restart", "collect",
"count", "step", "setpause", "setstepmul", "count", "step", "setpause", "setstepmul",
"isrunning", NULL}; "isrunning", "generational", "incremental", NULL};
static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT, static const int optsnum[] = {LUA_GCSTOP, LUA_GCRESTART, LUA_GCCOLLECT,
LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL, LUA_GCCOUNT, LUA_GCSTEP, LUA_GCSETPAUSE, LUA_GCSETSTEPMUL,
LUA_GCISRUNNING}; LUA_GCISRUNNING, LUA_GCGEN, LUA_GCINC};
int o = optsnum[luaL_checkoption(L, 1, "collect", opts)]; int o = optsnum[luaL_checkoption(L, 1, "collect", opts)];
int ex = (int)luaL_optinteger(L, 2, 0);
int res = lua_gc(L, o, ex);
switch (o) { switch (o) {
case LUA_GCCOUNT: { case LUA_GCCOUNT: {
int b = lua_gc(L, LUA_GCCOUNTB, 0); int k = lua_gc(L, o);
lua_pushnumber(L, (lua_Number)res + ((lua_Number)b/1024)); int b = lua_gc(L, LUA_GCCOUNTB);
lua_pushnumber(L, (lua_Number)k + ((lua_Number)b/1024));
return 1; return 1;
} }
case LUA_GCSTEP: case LUA_GCISRUNNING: { case LUA_GCSTEP: {
int step = (int)luaL_optinteger(L, 2, 0);
int res = lua_gc(L, o, step);
lua_pushboolean(L, res); lua_pushboolean(L, res);
return 1; return 1;
} }
case LUA_GCSETPAUSE:
case LUA_GCSETSTEPMUL: {
int p = (int)luaL_optinteger(L, 2, 0);
int previous = lua_gc(L, o, p);
lua_pushinteger(L, previous);
return 1;
}
case LUA_GCISRUNNING: {
int res = lua_gc(L, o);
lua_pushboolean(L, res);
return 1;
}
case LUA_GCGEN: {
int minormul = (int)luaL_optinteger(L, 2, 0);
int majormul = (int)luaL_optinteger(L, 3, 0);
return pushmode(L, lua_gc(L, o, minormul, majormul));
}
case LUA_GCINC: {
int pause = (int)luaL_optinteger(L, 2, 0);
int stepmul = (int)luaL_optinteger(L, 3, 0);
int stepsize = (int)luaL_optinteger(L, 4, 0);
return pushmode(L, lua_gc(L, o, pause, stepmul, stepsize));
}
default: { default: {
int res = lua_gc(L, o);
lua_pushinteger(L, res); lua_pushinteger(L, res);
return 1; return 1;
} }
@ -206,23 +248,6 @@ static int luaB_type (lua_State *L) {
} }
static int pairsmeta (lua_State *L, const char *method, int iszero,
lua_CFunction iter) {
if (luaL_getmetafield(L, 1, method) == LUA_TNIL) { /* no metamethod? */
luaL_checktype(L, 1, LUA_TTABLE); /* argument must be a table */
lua_pushcfunction(L, iter); /* will return generator, */
lua_pushvalue(L, 1); /* state, */
if (iszero) lua_pushinteger(L, 0); /* and initial value */
else lua_pushnil(L);
}
else {
lua_pushvalue(L, 1); /* argument 'self' to metamethod */
lua_call(L, 1, 3); /* get 3 values from metamethod */
}
return 3;
}
static int luaB_next (lua_State *L) { static int luaB_next (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE); luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 2); /* create a 2nd argument if there isn't one */ lua_settop(L, 2); /* create a 2nd argument if there isn't one */
@ -236,7 +261,17 @@ static int luaB_next (lua_State *L) {
static int luaB_pairs (lua_State *L) { static int luaB_pairs (lua_State *L) {
return pairsmeta(L, "__pairs", 0, luaB_next); luaL_checkany(L, 1);
if (luaL_getmetafield(L, 1, "__pairs") == LUA_TNIL) { /* no metamethod? */
lua_pushcfunction(L, luaB_next); /* will return generator, */
lua_pushvalue(L, 1); /* state, */
lua_pushnil(L); /* and initial value */
}
else {
lua_pushvalue(L, 1); /* argument 'self' to metamethod */
lua_call(L, 1, 3); /* get 3 values from metamethod */
}
return 3;
} }
@ -255,15 +290,11 @@ static int ipairsaux (lua_State *L) {
** (The given "table" may not be a table.) ** (The given "table" may not be a table.)
*/ */
static int luaB_ipairs (lua_State *L) { static int luaB_ipairs (lua_State *L) {
#if defined(LUA_COMPAT_IPAIRS)
return pairsmeta(L, "__ipairs", 1, ipairsaux);
#else
luaL_checkany(L, 1); luaL_checkany(L, 1);
lua_pushcfunction(L, ipairsaux); /* iteration function */ lua_pushcfunction(L, ipairsaux); /* iteration function */
lua_pushvalue(L, 1); /* state */ lua_pushvalue(L, 1); /* state */
lua_pushinteger(L, 0); /* initial value */ lua_pushinteger(L, 0); /* initial value */
return 3; return 3;
#endif
} }
@ -277,9 +308,9 @@ static int load_aux (lua_State *L, int status, int envidx) {
return 1; return 1;
} }
else { /* error (message is on top of the stack) */ else { /* error (message is on top of the stack) */
lua_pushnil(L); luaL_pushfail(L);
lua_insert(L, -2); /* put before error message */ lua_insert(L, -2); /* put before error message */
return 2; /* return nil plus error message */ return 2; /* return fail plus error message */
} }
} }
@ -459,13 +490,11 @@ static const luaL_Reg base_funcs[] = {
{"ipairs", luaB_ipairs}, {"ipairs", luaB_ipairs},
{"loadfile", luaB_loadfile}, {"loadfile", luaB_loadfile},
{"load", luaB_load}, {"load", luaB_load},
#if defined(LUA_COMPAT_LOADSTRING)
{"loadstring", luaB_load},
#endif
{"next", luaB_next}, {"next", luaB_next},
{"pairs", luaB_pairs}, {"pairs", luaB_pairs},
{"pcall", luaB_pcall}, {"pcall", luaB_pcall},
{"print", luaB_print}, {"print", luaB_print},
{"warn", luaB_warn},
{"rawequal", luaB_rawequal}, {"rawequal", luaB_rawequal},
{"rawlen", luaB_rawlen}, {"rawlen", luaB_rawlen},
{"rawget", luaB_rawget}, {"rawget", luaB_rawget},
@ -477,7 +506,7 @@ static const luaL_Reg base_funcs[] = {
{"type", luaB_type}, {"type", luaB_type},
{"xpcall", luaB_xpcall}, {"xpcall", luaB_xpcall},
/* placeholders */ /* placeholders */
{"_G", NULL}, {LUA_GNAME, NULL},
{"_VERSION", NULL}, {"_VERSION", NULL},
{NULL, NULL} {NULL, NULL}
}; };
@ -489,7 +518,7 @@ LUAMOD_API int luaopen_base (lua_State *L) {
luaL_setfuncs(L, base_funcs, 0); luaL_setfuncs(L, base_funcs, 0);
/* set global _G */ /* set global _G */
lua_pushvalue(L, -1); lua_pushvalue(L, -1);
lua_setfield(L, -2, "_G"); lua_setfield(L, -2, LUA_GNAME);
/* set global _VERSION */ /* set global _VERSION */
lua_pushliteral(L, LUA_VERSION); lua_pushliteral(L, LUA_VERSION);
lua_setfield(L, -2, "_VERSION"); lua_setfield(L, -2, "_VERSION");

1814
lua-5.4.0/src/lcode.c Normal file
View File

File diff suppressed because it is too large Load Diff

34
lua-5.3.3/src/lcode.h → lua-5.4.0/src/lcode.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lcode.h,v 1.64 2016/01/05 16:22:37 roberto Exp $ ** $Id: lcode.h $
** Code generator for Lua ** Code generator for Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -24,40 +24,53 @@
** grep "ORDER OPR" if you change these enums (ORDER OP) ** grep "ORDER OPR" if you change these enums (ORDER OP)
*/ */
typedef enum BinOpr { typedef enum BinOpr {
/* arithmetic operators */
OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW, OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
OPR_DIV, OPR_DIV, OPR_IDIV,
OPR_IDIV, /* bitwise operators */
OPR_BAND, OPR_BOR, OPR_BXOR, OPR_BAND, OPR_BOR, OPR_BXOR,
OPR_SHL, OPR_SHR, OPR_SHL, OPR_SHR,
/* string operator */
OPR_CONCAT, OPR_CONCAT,
/* comparison operators */
OPR_EQ, OPR_LT, OPR_LE, OPR_EQ, OPR_LT, OPR_LE,
OPR_NE, OPR_GT, OPR_GE, OPR_NE, OPR_GT, OPR_GE,
/* logical operators */
OPR_AND, OPR_OR, OPR_AND, OPR_OR,
OPR_NOBINOPR OPR_NOBINOPR
} BinOpr; } BinOpr;
/* true if operation is foldable (that is, it is arithmetic or bitwise) */
#define foldbinop(op) ((op) <= OPR_SHR)
#define luaK_codeABC(fs,o,a,b,c) luaK_codeABCk(fs,o,a,b,c,0)
typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr; typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
/* get (pointer to) instruction of given 'expdesc' */ /* get (pointer to) instruction of given 'expdesc' */
#define getinstruction(fs,e) ((fs)->f->code[(e)->u.info]) #define getinstruction(fs,e) ((fs)->f->code[(e)->u.info])
#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
#define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET) #define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET)
#define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t) #define luaK_jumpto(fs,t) luaK_patchlist(fs, luaK_jump(fs), t)
LUAI_FUNC int luaK_code (FuncState *fs, Instruction i);
LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx); LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C); LUAI_FUNC int luaK_codeAsBx (FuncState *fs, OpCode o, int A, int Bx);
LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k); LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A,
int B, int C, int k);
LUAI_FUNC int luaK_isKint (expdesc *e);
LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v);
LUAI_FUNC void luaK_fixline (FuncState *fs, int line); LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n); LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n); LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
LUAI_FUNC void luaK_checkstack (FuncState *fs, int n); LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s); LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n);
LUAI_FUNC int luaK_intK (FuncState *fs, lua_Integer n);
LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e); LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e); LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e); LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
@ -75,14 +88,17 @@ LUAI_FUNC int luaK_jump (FuncState *fs);
LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret); LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target); LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list); LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level);
LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2); LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
LUAI_FUNC int luaK_getlabel (FuncState *fs); LUAI_FUNC int luaK_getlabel (FuncState *fs);
LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line); LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v); LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
expdesc *v2, int line); expdesc *v2, int line);
LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc,
int ra, int asize, int hsize);
LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore); LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
LUAI_FUNC void luaK_finish (FuncState *fs);
LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg);
#endif #endif

84
lua-5.3.3/src/lcorolib.c → lua-5.4.0/src/lcorolib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lcorolib.c,v 1.10 2016/04/11 19:19:55 roberto Exp $ ** $Id: lcorolib.c $
** Coroutine Library ** Coroutine Library
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -20,25 +20,24 @@
static lua_State *getco (lua_State *L) { static lua_State *getco (lua_State *L) {
lua_State *co = lua_tothread(L, 1); lua_State *co = lua_tothread(L, 1);
luaL_argcheck(L, co, 1, "thread expected"); luaL_argexpected(L, co, 1, "thread");
return co; return co;
} }
/*
** Resumes a coroutine. Returns the number of results for non-error
** cases or -1 for errors.
*/
static int auxresume (lua_State *L, lua_State *co, int narg) { static int auxresume (lua_State *L, lua_State *co, int narg) {
int status; int status, nres;
if (!lua_checkstack(co, narg)) { if (!lua_checkstack(co, narg)) {
lua_pushliteral(L, "too many arguments to resume"); lua_pushliteral(L, "too many arguments to resume");
return -1; /* error flag */ return -1; /* error flag */
} }
if (lua_status(co) == LUA_OK && lua_gettop(co) == 0) {
lua_pushliteral(L, "cannot resume dead coroutine");
return -1; /* error flag */
}
lua_xmove(L, co, narg); lua_xmove(L, co, narg);
status = lua_resume(co, L, narg); status = lua_resume(co, L, narg, &nres);
if (status == LUA_OK || status == LUA_YIELD) { if (status == LUA_OK || status == LUA_YIELD) {
int nres = lua_gettop(co);
if (!lua_checkstack(L, nres + 1)) { if (!lua_checkstack(L, nres + 1)) {
lua_pop(co, nres); /* remove results anyway */ lua_pop(co, nres); /* remove results anyway */
lua_pushliteral(L, "too many results to resume"); lua_pushliteral(L, "too many results to resume");
@ -75,8 +74,11 @@ static int luaB_auxwrap (lua_State *L) {
lua_State *co = lua_tothread(L, lua_upvalueindex(1)); lua_State *co = lua_tothread(L, lua_upvalueindex(1));
int r = auxresume(L, co, lua_gettop(L)); int r = auxresume(L, co, lua_gettop(L));
if (r < 0) { if (r < 0) {
int stat = lua_status(co);
if (stat != LUA_OK && stat != LUA_YIELD)
lua_resetthread(co); /* close variables in case of errors */
if (lua_type(L, -1) == LUA_TSTRING) { /* error object is a string? */ if (lua_type(L, -1) == LUA_TSTRING) { /* error object is a string? */
luaL_where(L, 1); /* add extra info */ luaL_where(L, 1); /* add extra info, if available */
lua_insert(L, -2); lua_insert(L, -2);
lua_concat(L, 2); lua_concat(L, 2);
} }
@ -108,35 +110,48 @@ static int luaB_yield (lua_State *L) {
} }
static int luaB_costatus (lua_State *L) { #define COS_RUN 0
lua_State *co = getco(L); #define COS_DEAD 1
if (L == co) lua_pushliteral(L, "running"); #define COS_YIELD 2
#define COS_NORM 3
static const char *const statname[] =
{"running", "dead", "suspended", "normal"};
static int auxstatus (lua_State *L, lua_State *co) {
if (L == co) return COS_RUN;
else { else {
switch (lua_status(co)) { switch (lua_status(co)) {
case LUA_YIELD: case LUA_YIELD:
lua_pushliteral(L, "suspended"); return COS_YIELD;
break;
case LUA_OK: { case LUA_OK: {
lua_Debug ar; lua_Debug ar;
if (lua_getstack(co, 0, &ar) > 0) /* does it have frames? */ if (lua_getstack(co, 0, &ar)) /* does it have frames? */
lua_pushliteral(L, "normal"); /* it is running */ return COS_NORM; /* it is running */
else if (lua_gettop(co) == 0) else if (lua_gettop(co) == 0)
lua_pushliteral(L, "dead"); return COS_DEAD;
else else
lua_pushliteral(L, "suspended"); /* initial state */ return COS_YIELD; /* initial state */
break;
} }
default: /* some error occurred */ default: /* some error occurred */
lua_pushliteral(L, "dead"); return COS_DEAD;
break;
} }
} }
}
static int luaB_costatus (lua_State *L) {
lua_State *co = getco(L);
lua_pushstring(L, statname[auxstatus(L, co)]);
return 1; return 1;
} }
static int luaB_yieldable (lua_State *L) { static int luaB_yieldable (lua_State *L) {
lua_pushboolean(L, lua_isyieldable(L)); lua_State *co = lua_isnone(L, 1) ? L : getco(L);
lua_pushboolean(L, lua_isyieldable(co));
return 1; return 1;
} }
@ -148,6 +163,28 @@ static int luaB_corunning (lua_State *L) {
} }
static int luaB_close (lua_State *L) {
lua_State *co = getco(L);
int status = auxstatus(L, co);
switch (status) {
case COS_DEAD: case COS_YIELD: {
status = lua_resetthread(co);
if (status == LUA_OK) {
lua_pushboolean(L, 1);
return 1;
}
else {
lua_pushboolean(L, 0);
lua_xmove(co, L, 1); /* copy error message */
return 2;
}
}
default: /* normal or running coroutine */
return luaL_error(L, "cannot close a %s coroutine", statname[status]);
}
}
static const luaL_Reg co_funcs[] = { static const luaL_Reg co_funcs[] = {
{"create", luaB_cocreate}, {"create", luaB_cocreate},
{"resume", luaB_coresume}, {"resume", luaB_coresume},
@ -156,6 +193,7 @@ static const luaL_Reg co_funcs[] = {
{"wrap", luaB_cowrap}, {"wrap", luaB_cowrap},
{"yield", luaB_yield}, {"yield", luaB_yield},
{"isyieldable", luaB_yieldable}, {"isyieldable", luaB_yieldable},
{"close", luaB_close},
{NULL, NULL} {NULL, NULL}
}; };

43
lua-5.3.3/src/lctype.c → lua-5.4.0/src/lctype.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lctype.c,v 1.12 2014/11/02 19:19:04 roberto Exp $ ** $Id: lctype.c $
** 'ctype' functions for Lua ** 'ctype' functions for Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -16,6 +16,15 @@
#include <limits.h> #include <limits.h>
#if defined (LUA_UCID) /* accept UniCode IDentifiers? */
/* consider all non-ascii codepoints to be alphabetic */
#define NONA 0x01
#else
#define NONA 0x00 /* default */
#endif
LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = { LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = {
0x00, /* EOZ */ 0x00, /* EOZ */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 0. */
@ -34,22 +43,22 @@ LUAI_DDEF const lu_byte luai_ctype_[UCHAR_MAX + 2] = {
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */ 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, /* 7. */
0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00, 0x05, 0x05, 0x05, 0x04, 0x04, 0x04, 0x04, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 8. */ NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* 8. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 9. */ NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* 9. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* a. */ NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* a. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* b. */ NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* b. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* c. */ 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, /* c. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* d. */ NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* d. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* e. */ NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA, /* e. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, NONA, NONA, NONA, NONA, NONA, NONA, NONA, NONA,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* f. */ NONA, NONA, NONA, NONA, NONA, 0x00, 0x00, 0x00, /* f. */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
}; };
#endif /* } */ #endif /* } */

4
lua-5.3.3/src/lctype.h → lua-5.4.0/src/lctype.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lctype.h,v 1.12 2011/07/15 12:50:29 roberto Exp $ ** $Id: lctype.h $
** 'ctype' functions for Lua ** 'ctype' functions for Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -68,7 +68,7 @@
/* two more entries for 0 and -1 (EOZ) */ /* two more entries for 0 and -1 (EOZ) */
LUAI_DDEC const lu_byte luai_ctype_[UCHAR_MAX + 2]; LUAI_DDEC(const lu_byte luai_ctype_[UCHAR_MAX + 2];)
#else /* }{ */ #else /* }{ */

73
lua-5.3.3/src/ldblib.c → lua-5.4.0/src/ldblib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ldblib.c,v 1.151 2015/11/23 11:29:43 roberto Exp $ ** $Id: ldblib.c $
** Interface from Lua to its debug API ** Interface from Lua to its debug API
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -21,10 +21,10 @@
/* /*
** The hook table at registry[&HOOKKEY] maps threads to their current ** The hook table at registry[HOOKKEY] maps threads to their current
** hook function. (We only need the unique address of 'HOOKKEY'.) ** hook function.
*/ */
static const int HOOKKEY = 0; static const char *const HOOKKEY = "_HOOKKEY";
/* /*
@ -55,8 +55,7 @@ static int db_getmetatable (lua_State *L) {
static int db_setmetatable (lua_State *L) { static int db_setmetatable (lua_State *L) {
int t = lua_type(L, 2); int t = lua_type(L, 2);
luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2, luaL_argexpected(L, t == LUA_TNIL || t == LUA_TTABLE, 2, "nil or table");
"nil or table expected");
lua_settop(L, 2); lua_settop(L, 2);
lua_setmetatable(L, 1); lua_setmetatable(L, 1);
return 1; /* return 1st argument */ return 1; /* return 1st argument */
@ -64,19 +63,24 @@ static int db_setmetatable (lua_State *L) {
static int db_getuservalue (lua_State *L) { static int db_getuservalue (lua_State *L) {
int n = (int)luaL_optinteger(L, 2, 1);
if (lua_type(L, 1) != LUA_TUSERDATA) if (lua_type(L, 1) != LUA_TUSERDATA)
lua_pushnil(L); luaL_pushfail(L);
else else if (lua_getiuservalue(L, 1, n) != LUA_TNONE) {
lua_getuservalue(L, 1); lua_pushboolean(L, 1);
return 2;
}
return 1; return 1;
} }
static int db_setuservalue (lua_State *L) { static int db_setuservalue (lua_State *L) {
int n = (int)luaL_optinteger(L, 3, 1);
luaL_checktype(L, 1, LUA_TUSERDATA); luaL_checktype(L, 1, LUA_TUSERDATA);
luaL_checkany(L, 2); luaL_checkany(L, 2);
lua_settop(L, 2); lua_settop(L, 2);
lua_setuservalue(L, 1); if (!lua_setiuservalue(L, 1, n))
luaL_pushfail(L);
return 1; return 1;
} }
@ -146,7 +150,7 @@ static int db_getinfo (lua_State *L) {
lua_Debug ar; lua_Debug ar;
int arg; int arg;
lua_State *L1 = getthread(L, &arg); lua_State *L1 = getthread(L, &arg);
const char *options = luaL_optstring(L, arg+2, "flnStu"); const char *options = luaL_optstring(L, arg+2, "flnSrtu");
checkstack(L, L1, 3); checkstack(L, L1, 3);
if (lua_isfunction(L, arg + 1)) { /* info about a function? */ if (lua_isfunction(L, arg + 1)) { /* info about a function? */
options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */ options = lua_pushfstring(L, ">%s", options); /* add '>' to 'options' */
@ -155,7 +159,7 @@ static int db_getinfo (lua_State *L) {
} }
else { /* stack level */ else { /* stack level */
if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) { if (!lua_getstack(L1, (int)luaL_checkinteger(L, arg + 1), &ar)) {
lua_pushnil(L); /* level out of range */ luaL_pushfail(L); /* level out of range */
return 1; return 1;
} }
} }
@ -163,7 +167,8 @@ static int db_getinfo (lua_State *L) {
return luaL_argerror(L, arg+2, "invalid option"); return luaL_argerror(L, arg+2, "invalid option");
lua_newtable(L); /* table to collect results */ lua_newtable(L); /* table to collect results */
if (strchr(options, 'S')) { if (strchr(options, 'S')) {
settabss(L, "source", ar.source); lua_pushlstring(L, ar.source, ar.srclen);
lua_setfield(L, -2, "source");
settabss(L, "short_src", ar.short_src); settabss(L, "short_src", ar.short_src);
settabsi(L, "linedefined", ar.linedefined); settabsi(L, "linedefined", ar.linedefined);
settabsi(L, "lastlinedefined", ar.lastlinedefined); settabsi(L, "lastlinedefined", ar.lastlinedefined);
@ -180,6 +185,10 @@ static int db_getinfo (lua_State *L) {
settabss(L, "name", ar.name); settabss(L, "name", ar.name);
settabss(L, "namewhat", ar.namewhat); settabss(L, "namewhat", ar.namewhat);
} }
if (strchr(options, 'r')) {
settabsi(L, "ftransfer", ar.ftransfer);
settabsi(L, "ntransfer", ar.ntransfer);
}
if (strchr(options, 't')) if (strchr(options, 't'))
settabsb(L, "istailcall", ar.istailcall); settabsb(L, "istailcall", ar.istailcall);
if (strchr(options, 'L')) if (strchr(options, 'L'))
@ -193,8 +202,6 @@ static int db_getinfo (lua_State *L) {
static int db_getlocal (lua_State *L) { static int db_getlocal (lua_State *L) {
int arg; int arg;
lua_State *L1 = getthread(L, &arg); lua_State *L1 = getthread(L, &arg);
lua_Debug ar;
const char *name;
int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */ int nvar = (int)luaL_checkinteger(L, arg + 2); /* local-variable index */
if (lua_isfunction(L, arg + 1)) { /* function argument? */ if (lua_isfunction(L, arg + 1)) { /* function argument? */
lua_pushvalue(L, arg + 1); /* push function */ lua_pushvalue(L, arg + 1); /* push function */
@ -202,6 +209,8 @@ static int db_getlocal (lua_State *L) {
return 1; /* return only name (there is no value) */ return 1; /* return only name (there is no value) */
} }
else { /* stack-level argument */ else { /* stack-level argument */
lua_Debug ar;
const char *name;
int level = (int)luaL_checkinteger(L, arg + 1); int level = (int)luaL_checkinteger(L, arg + 1);
if (!lua_getstack(L1, level, &ar)) /* out of range? */ if (!lua_getstack(L1, level, &ar)) /* out of range? */
return luaL_argerror(L, arg+1, "level out of range"); return luaL_argerror(L, arg+1, "level out of range");
@ -214,7 +223,7 @@ static int db_getlocal (lua_State *L) {
return 2; return 2;
} }
else { else {
lua_pushnil(L); /* no name (nor value) */ luaL_pushfail(L); /* no name (nor value) */
return 1; return 1;
} }
} }
@ -305,7 +314,7 @@ static int db_upvaluejoin (lua_State *L) {
static void hookf (lua_State *L, lua_Debug *ar) { static void hookf (lua_State *L, lua_Debug *ar) {
static const char *const hooknames[] = static const char *const hooknames[] =
{"call", "return", "line", "count", "tail call"}; {"call", "return", "line", "count", "tail call"};
lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY); lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
lua_pushthread(L); lua_pushthread(L);
if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */ if (lua_rawget(L, -2) == LUA_TFUNCTION) { /* is there a hook function? */
lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */ lua_pushstring(L, hooknames[(int)ar->event]); /* push event name */
@ -358,14 +367,12 @@ static int db_sethook (lua_State *L) {
count = (int)luaL_optinteger(L, arg + 3, 0); count = (int)luaL_optinteger(L, arg + 3, 0);
func = hookf; mask = makemask(smask, count); func = hookf; mask = makemask(smask, count);
} }
if (lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY) == LUA_TNIL) { if (!luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)) {
lua_createtable(L, 0, 2); /* create a hook table */ /* table just created; initialize it */
lua_pushvalue(L, -1);
lua_rawsetp(L, LUA_REGISTRYINDEX, &HOOKKEY); /* set it in position */
lua_pushstring(L, "k"); lua_pushstring(L, "k");
lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */ lua_setfield(L, -2, "__mode"); /** hooktable.__mode = "k" */
lua_pushvalue(L, -1); lua_pushvalue(L, -1);
lua_setmetatable(L, -2); /* setmetatable(hooktable) = hooktable */ lua_setmetatable(L, -2); /* metatable(hooktable) = hooktable */
} }
checkstack(L, L1, 1); checkstack(L, L1, 1);
lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */ lua_pushthread(L1); lua_xmove(L1, L, 1); /* key (thread) */
@ -382,12 +389,14 @@ static int db_gethook (lua_State *L) {
char buff[5]; char buff[5];
int mask = lua_gethookmask(L1); int mask = lua_gethookmask(L1);
lua_Hook hook = lua_gethook(L1); lua_Hook hook = lua_gethook(L1);
if (hook == NULL) /* no hook? */ if (hook == NULL) { /* no hook? */
lua_pushnil(L); luaL_pushfail(L);
return 1;
}
else if (hook != hookf) /* external hook? */ else if (hook != hookf) /* external hook? */
lua_pushliteral(L, "external hook"); lua_pushliteral(L, "external hook");
else { /* hook table must exist */ else { /* hook table must exist */
lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY); lua_getfield(L, LUA_REGISTRYINDEX, HOOKKEY);
checkstack(L, L1, 1); checkstack(L, L1, 1);
lua_pushthread(L1); lua_xmove(L1, L, 1); lua_pushthread(L1); lua_xmove(L1, L, 1);
lua_rawget(L, -2); /* 1st result = hooktable[L1] */ lua_rawget(L, -2); /* 1st result = hooktable[L1] */
@ -408,7 +417,7 @@ static int db_debug (lua_State *L) {
return 0; return 0;
if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") || if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
lua_pcall(L, 0, 0, 0)) lua_pcall(L, 0, 0, 0))
lua_writestringerror("%s\n", lua_tostring(L, -1)); lua_writestringerror("%s\n", luaL_tolstring(L, -1, NULL));
lua_settop(L, 0); /* remove eventual returns */ lua_settop(L, 0); /* remove eventual returns */
} }
} }
@ -428,6 +437,17 @@ static int db_traceback (lua_State *L) {
} }
static int db_setcstacklimit (lua_State *L) {
int limit = (int)luaL_checkinteger(L, 1);
int res = lua_setcstacklimit(L, limit);
if (res == 0)
lua_pushboolean(L, 0);
else
lua_pushinteger(L, res);
return 1;
}
static const luaL_Reg dblib[] = { static const luaL_Reg dblib[] = {
{"debug", db_debug}, {"debug", db_debug},
{"getuservalue", db_getuservalue}, {"getuservalue", db_getuservalue},
@ -445,6 +465,7 @@ static const luaL_Reg dblib[] = {
{"setmetatable", db_setmetatable}, {"setmetatable", db_setmetatable},
{"setupvalue", db_setupvalue}, {"setupvalue", db_setupvalue},
{"traceback", db_traceback}, {"traceback", db_traceback},
{"setcstacklimit", db_setcstacklimit},
{NULL, NULL} {NULL, NULL}
}; };

476
lua-5.3.3/src/ldebug.c → lua-5.4.0/src/ldebug.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ldebug.c,v 2.120 2016/03/31 19:01:21 roberto Exp $ ** $Id: ldebug.c $
** Debug Interface ** Debug Interface
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -31,14 +31,15 @@
#define noLuaClosure(f) ((f) == NULL || (f)->c.tt == LUA_TCCL) #define noLuaClosure(f) ((f) == NULL || (f)->c.tt == LUA_VCCL)
/* Active Lua function (given call info) */ /* Active Lua function (given call info) */
#define ci_func(ci) (clLvalue((ci)->func)) #define ci_func(ci) (clLvalue(s2v((ci)->func)))
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name); static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
const char **name);
static int currentpc (CallInfo *ci) { static int currentpc (CallInfo *ci) {
@ -47,29 +48,85 @@ static int currentpc (CallInfo *ci) {
} }
static int currentline (CallInfo *ci) {
return getfuncline(ci_func(ci)->p, currentpc(ci));
}
/* /*
** If function yielded, its 'func' can be in the 'extra' field. The ** Get a "base line" to find the line corresponding to an instruction.
** next function restores 'func' to its correct value for debugging ** For that, search the array of absolute line info for the largest saved
** purposes. (It exchanges 'func' and 'extra'; so, when called again, ** instruction smaller or equal to the wanted instruction. A special
** after debugging, it also "re-restores" ** 'func' to its altered value. ** case is when there is no absolute info or the instruction is before
** the first absolute one.
*/ */
static void swapextra (lua_State *L) { static int getbaseline (const Proto *f, int pc, int *basepc) {
if (L->status == LUA_YIELD) { if (f->sizeabslineinfo == 0 || pc < f->abslineinfo[0].pc) {
CallInfo *ci = L->ci; /* get function that yielded */ *basepc = -1; /* start from the beginning */
StkId temp = ci->func; /* exchange its 'func' and 'extra' values */ return f->linedefined;
ci->func = restorestack(L, ci->extra); }
ci->extra = savestack(L, temp); else {
unsigned int i;
if (pc >= f->abslineinfo[f->sizeabslineinfo - 1].pc)
i = f->sizeabslineinfo - 1; /* instruction is after last saved one */
else { /* binary search */
unsigned int j = f->sizeabslineinfo - 1; /* pc < anchorlines[j] */
i = 0; /* abslineinfo[i] <= pc */
while (i < j - 1) {
unsigned int m = (j + i) / 2;
if (pc >= f->abslineinfo[m].pc)
i = m;
else
j = m;
}
}
*basepc = f->abslineinfo[i].pc;
return f->abslineinfo[i].line;
} }
} }
/* /*
** This function can be called asynchronously (e.g. during a signal). ** Get the line corresponding to instruction 'pc' in function 'f';
** first gets a base line and from there does the increments until
** the desired instruction.
*/
int luaG_getfuncline (const Proto *f, int pc) {
if (f->lineinfo == NULL) /* no debug information? */
return -1;
else {
int basepc;
int baseline = getbaseline(f, pc, &basepc);
while (basepc++ < pc) { /* walk until given instruction */
lua_assert(f->lineinfo[basepc] != ABSLINEINFO);
baseline += f->lineinfo[basepc]; /* correct line */
}
return baseline;
}
}
static int getcurrentline (CallInfo *ci) {
return luaG_getfuncline(ci_func(ci)->p, currentpc(ci));
}
/*
** Set 'trap' for all active Lua frames.
** This function can be called during a signal, under "reasonable"
** assumptions. A new 'ci' is completely linked in the list before it
** becomes part of the "active" list, and we assume that pointers are
** atomic; see comment in next function.
** (A compiler doing interprocedural optimizations could, theoretically,
** reorder memory writes in such a way that the list could be
** temporarily broken while inserting a new element. We simply assume it
** has no good reasons to do that.)
*/
static void settraps (CallInfo *ci) {
for (; ci != NULL; ci = ci->previous)
if (isLua(ci))
ci->u.l.trap = 1;
}
/*
** This function can be called during a signal, under "reasonable"
** assumptions.
** Fields 'oldpc', 'basehookcount', and 'hookcount' (set by ** Fields 'oldpc', 'basehookcount', and 'hookcount' (set by
** 'resethookcount') are for debug only, and it is no problem if they ** 'resethookcount') are for debug only, and it is no problem if they
** get arbitrary values (causes at most one wrong hook call). 'hookmask' ** get arbitrary values (causes at most one wrong hook call). 'hookmask'
@ -88,6 +145,8 @@ LUA_API void lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
L->basehookcount = count; L->basehookcount = count;
resethookcount(L); resethookcount(L);
L->hookmask = cast_byte(mask); L->hookmask = cast_byte(mask);
if (mask)
settraps(L->ci); /* to trace inside 'luaV_execute' */
} }
@ -123,7 +182,7 @@ LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
} }
static const char *upvalname (Proto *p, int uv) { static const char *upvalname (const Proto *p, int uv) {
TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name); TString *s = check_exp(uv < p->sizeupvalues, p->upvalues[uv].name);
if (s == NULL) return "?"; if (s == NULL) return "?";
else return getstr(s); else return getstr(s);
@ -131,38 +190,37 @@ static const char *upvalname (Proto *p, int uv) {
static const char *findvararg (CallInfo *ci, int n, StkId *pos) { static const char *findvararg (CallInfo *ci, int n, StkId *pos) {
int nparams = clLvalue(ci->func)->p->numparams; if (clLvalue(s2v(ci->func))->p->is_vararg) {
if (n >= cast_int(ci->u.l.base - ci->func) - nparams) int nextra = ci->u.l.nextraargs;
return NULL; /* no such vararg */ if (n <= nextra) {
else { *pos = ci->func - nextra + (n - 1);
*pos = ci->func + nparams + n; return "(vararg)"; /* generic name for any vararg */
return "(*vararg)"; /* generic name for any vararg */ }
} }
return NULL; /* no such vararg */
} }
static const char *findlocal (lua_State *L, CallInfo *ci, int n, const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n, StkId *pos) {
StkId *pos) { StkId base = ci->func + 1;
const char *name = NULL; const char *name = NULL;
StkId base;
if (isLua(ci)) { if (isLua(ci)) {
if (n < 0) /* access to vararg values? */ if (n < 0) /* access to vararg values? */
return findvararg(ci, -n, pos); return findvararg(ci, -n, pos);
else { else
base = ci->u.l.base;
name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci)); name = luaF_getlocalname(ci_func(ci)->p, n, currentpc(ci));
}
} }
else
base = ci->func + 1;
if (name == NULL) { /* no 'standard' name? */ if (name == NULL) { /* no 'standard' name? */
StkId limit = (ci == L->ci) ? L->top : ci->next->func; StkId limit = (ci == L->ci) ? L->top : ci->next->func;
if (limit - base >= n && n > 0) /* is 'n' inside 'ci' stack? */ if (limit - base >= n && n > 0) { /* is 'n' inside 'ci' stack? */
name = "(*temporary)"; /* generic name for any valid slot */ /* generic name for any valid slot */
name = isLua(ci) ? "(temporary)" : "(C temporary)";
}
else else
return NULL; /* no name */ return NULL; /* no name */
} }
*pos = base + (n - 1); if (pos)
*pos = base + (n - 1);
return name; return name;
} }
@ -170,22 +228,20 @@ static const char *findlocal (lua_State *L, CallInfo *ci, int n,
LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) { LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
const char *name; const char *name;
lua_lock(L); lua_lock(L);
swapextra(L);
if (ar == NULL) { /* information about non-active function? */ if (ar == NULL) { /* information about non-active function? */
if (!isLfunction(L->top - 1)) /* not a Lua function? */ if (!isLfunction(s2v(L->top - 1))) /* not a Lua function? */
name = NULL; name = NULL;
else /* consider live variables at function start (parameters) */ else /* consider live variables at function start (parameters) */
name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0); name = luaF_getlocalname(clLvalue(s2v(L->top - 1))->p, n, 0);
} }
else { /* active function; get information through 'ar' */ else { /* active function; get information through 'ar' */
StkId pos = NULL; /* to avoid warnings */ StkId pos = NULL; /* to avoid warnings */
name = findlocal(L, ar->i_ci, n, &pos); name = luaG_findlocal(L, ar->i_ci, n, &pos);
if (name) { if (name) {
setobj2s(L, L->top, pos); setobjs2s(L, L->top, pos);
api_incr_top(L); api_incr_top(L);
} }
} }
swapextra(L);
lua_unlock(L); lua_unlock(L);
return name; return name;
} }
@ -195,13 +251,11 @@ LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
StkId pos = NULL; /* to avoid warnings */ StkId pos = NULL; /* to avoid warnings */
const char *name; const char *name;
lua_lock(L); lua_lock(L);
swapextra(L); name = luaG_findlocal(L, ar->i_ci, n, &pos);
name = findlocal(L, ar->i_ci, n, &pos);
if (name) { if (name) {
setobjs2s(L, pos, L->top - 1); setobjs2s(L, pos, L->top - 1);
L->top--; /* pop value */ L->top--; /* pop value */
} }
swapextra(L);
lua_unlock(L); lua_unlock(L);
return name; return name;
} }
@ -210,40 +264,73 @@ LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
static void funcinfo (lua_Debug *ar, Closure *cl) { static void funcinfo (lua_Debug *ar, Closure *cl) {
if (noLuaClosure(cl)) { if (noLuaClosure(cl)) {
ar->source = "=[C]"; ar->source = "=[C]";
ar->srclen = LL("=[C]");
ar->linedefined = -1; ar->linedefined = -1;
ar->lastlinedefined = -1; ar->lastlinedefined = -1;
ar->what = "C"; ar->what = "C";
} }
else { else {
Proto *p = cl->l.p; const Proto *p = cl->l.p;
ar->source = p->source ? getstr(p->source) : "=?"; if (p->source) {
ar->source = getstr(p->source);
ar->srclen = tsslen(p->source);
}
else {
ar->source = "=?";
ar->srclen = LL("=?");
}
ar->linedefined = p->linedefined; ar->linedefined = p->linedefined;
ar->lastlinedefined = p->lastlinedefined; ar->lastlinedefined = p->lastlinedefined;
ar->what = (ar->linedefined == 0) ? "main" : "Lua"; ar->what = (ar->linedefined == 0) ? "main" : "Lua";
} }
luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE); luaO_chunkid(ar->short_src, ar->source, ar->srclen);
}
static int nextline (const Proto *p, int currentline, int pc) {
if (p->lineinfo[pc] != ABSLINEINFO)
return currentline + p->lineinfo[pc];
else
return luaG_getfuncline(p, pc);
} }
static void collectvalidlines (lua_State *L, Closure *f) { static void collectvalidlines (lua_State *L, Closure *f) {
if (noLuaClosure(f)) { if (noLuaClosure(f)) {
setnilvalue(L->top); setnilvalue(s2v(L->top));
api_incr_top(L); api_incr_top(L);
} }
else { else {
int i; int i;
TValue v; TValue v;
int *lineinfo = f->l.p->lineinfo; const Proto *p = f->l.p;
int currentline = p->linedefined;
Table *t = luaH_new(L); /* new table to store active lines */ Table *t = luaH_new(L); /* new table to store active lines */
sethvalue(L, L->top, t); /* push it on stack */ sethvalue2s(L, L->top, t); /* push it on stack */
api_incr_top(L); api_incr_top(L);
setbvalue(&v, 1); /* boolean 'true' to be the value of all indices */ setbtvalue(&v); /* boolean 'true' to be the value of all indices */
for (i = 0; i < f->l.p->sizelineinfo; i++) /* for all lines with code */ for (i = 0; i < p->sizelineinfo; i++) { /* for all lines with code */
luaH_setint(L, t, lineinfo[i], &v); /* table[line] = true */ currentline = nextline(p, currentline, i);
luaH_setint(L, t, currentline, &v); /* table[line] = true */
}
} }
} }
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
if (ci == NULL) /* no 'ci'? */
return NULL; /* no info */
else if (ci->callstatus & CIST_FIN) { /* is this a finalizer? */
*name = "__gc";
return "metamethod"; /* report it as such */
}
/* calling function is a known Lua function? */
else if (!(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
return funcnamefromcode(L, ci->previous, name);
else return NULL; /* no way to find a name */
}
static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar, static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
Closure *f, CallInfo *ci) { Closure *f, CallInfo *ci) {
int status = 1; int status = 1;
@ -254,7 +341,7 @@ static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
break; break;
} }
case 'l': { case 'l': {
ar->currentline = (ci && isLua(ci)) ? currentline(ci) : -1; ar->currentline = (ci && isLua(ci)) ? getcurrentline(ci) : -1;
break; break;
} }
case 'u': { case 'u': {
@ -274,17 +361,22 @@ static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
break; break;
} }
case 'n': { case 'n': {
/* calling function is a known Lua function? */ ar->namewhat = getfuncname(L, ci, &ar->name);
if (ci && !(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
ar->namewhat = getfuncname(L, ci->previous, &ar->name);
else
ar->namewhat = NULL;
if (ar->namewhat == NULL) { if (ar->namewhat == NULL) {
ar->namewhat = ""; /* not found */ ar->namewhat = ""; /* not found */
ar->name = NULL; ar->name = NULL;
} }
break; break;
} }
case 'r': {
if (ci == NULL || !(ci->callstatus & CIST_TRAN))
ar->ftransfer = ar->ntransfer = 0;
else {
ar->ftransfer = ci->u2.transferinfo.ftransfer;
ar->ntransfer = ci->u2.transferinfo.ntransfer;
}
break;
}
case 'L': case 'L':
case 'f': /* handled by lua_getinfo */ case 'f': /* handled by lua_getinfo */
break; break;
@ -299,28 +391,26 @@ LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
int status; int status;
Closure *cl; Closure *cl;
CallInfo *ci; CallInfo *ci;
StkId func; TValue *func;
lua_lock(L); lua_lock(L);
swapextra(L);
if (*what == '>') { if (*what == '>') {
ci = NULL; ci = NULL;
func = L->top - 1; func = s2v(L->top - 1);
api_check(L, ttisfunction(func), "function expected"); api_check(L, ttisfunction(func), "function expected");
what++; /* skip the '>' */ what++; /* skip the '>' */
L->top--; /* pop function */ L->top--; /* pop function */
} }
else { else {
ci = ar->i_ci; ci = ar->i_ci;
func = ci->func; func = s2v(ci->func);
lua_assert(ttisfunction(ci->func)); lua_assert(ttisfunction(func));
} }
cl = ttisclosure(func) ? clvalue(func) : NULL; cl = ttisclosure(func) ? clvalue(func) : NULL;
status = auxgetinfo(L, what, ar, cl, ci); status = auxgetinfo(L, what, ar, cl, ci);
if (strchr(what, 'f')) { if (strchr(what, 'f')) {
setobjs2s(L, L->top, func); setobj2s(L, L->top, func);
api_incr_top(L); api_incr_top(L);
} }
swapextra(L); /* correct before option 'L', which can raise a mem. error */
if (strchr(what, 'L')) if (strchr(what, 'L'))
collectvalidlines(L, cl); collectvalidlines(L, cl);
lua_unlock(L); lua_unlock(L);
@ -334,30 +424,38 @@ LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
** ======================================================= ** =======================================================
*/ */
static const char *getobjname (Proto *p, int lastpc, int reg, static const char *getobjname (const Proto *p, int lastpc, int reg,
const char **name); const char **name);
/* /*
** find a "name" for the RK value 'c' ** Find a "name" for the constant 'c'.
*/ */
static void kname (Proto *p, int pc, int c, const char **name) { static void kname (const Proto *p, int c, const char **name) {
if (ISK(c)) { /* is 'c' a constant? */ TValue *kvalue = &p->k[c];
TValue *kvalue = &p->k[INDEXK(c)]; *name = (ttisstring(kvalue)) ? svalue(kvalue) : "?";
if (ttisstring(kvalue)) { /* literal constant? */ }
*name = svalue(kvalue); /* it is its own name */
return;
} /*
/* else no reasonable name found */ ** Find a "name" for the register 'c'.
} */
else { /* 'c' is a register */ static void rname (const Proto *p, int pc, int c, const char **name) {
const char *what = getobjname(p, pc, c, name); /* search for 'c' */ const char *what = getobjname(p, pc, c, name); /* search for 'c' */
if (what && *what == 'c') { /* found a constant name? */ if (!(what && *what == 'c')) /* did not find a constant name? */
return; /* 'name' already filled */ *name = "?";
} }
/* else no reasonable name found */
}
*name = "?"; /* no reasonable name found */ /*
** Find a "name" for a 'C' value in an RK instruction.
*/
static void rkname (const Proto *p, int pc, Instruction i, const char **name) {
int c = GETARG_C(i); /* key index */
if (GETARG_k(i)) /* is 'c' a constant? */
kname(p, c, name);
else /* 'c' is a register */
rname(p, pc, c, name);
} }
@ -369,55 +467,70 @@ static int filterpc (int pc, int jmptarget) {
/* /*
** try to find last instruction before 'lastpc' that modified register 'reg' ** Try to find last instruction before 'lastpc' that modified register 'reg'.
*/ */
static int findsetreg (Proto *p, int lastpc, int reg) { static int findsetreg (const Proto *p, int lastpc, int reg) {
int pc; int pc;
int setreg = -1; /* keep last instruction that changed 'reg' */ int setreg = -1; /* keep last instruction that changed 'reg' */
int jmptarget = 0; /* any code before this address is conditional */ int jmptarget = 0; /* any code before this address is conditional */
if (testMMMode(GET_OPCODE(p->code[lastpc])))
lastpc--; /* previous instruction was not actually executed */
for (pc = 0; pc < lastpc; pc++) { for (pc = 0; pc < lastpc; pc++) {
Instruction i = p->code[pc]; Instruction i = p->code[pc];
OpCode op = GET_OPCODE(i); OpCode op = GET_OPCODE(i);
int a = GETARG_A(i); int a = GETARG_A(i);
int change; /* true if current instruction changed 'reg' */
switch (op) { switch (op) {
case OP_LOADNIL: { case OP_LOADNIL: { /* set registers from 'a' to 'a+b' */
int b = GETARG_B(i); int b = GETARG_B(i);
if (a <= reg && reg <= a + b) /* set registers from 'a' to 'a+b' */ change = (a <= reg && reg <= a + b);
setreg = filterpc(pc, jmptarget);
break; break;
} }
case OP_TFORCALL: { case OP_TFORCALL: { /* affect all regs above its base */
if (reg >= a + 2) /* affect all regs above its base */ change = (reg >= a + 2);
setreg = filterpc(pc, jmptarget);
break; break;
} }
case OP_CALL: case OP_CALL:
case OP_TAILCALL: { case OP_TAILCALL: { /* affect all registers above base */
if (reg >= a) /* affect all registers above base */ change = (reg >= a);
setreg = filterpc(pc, jmptarget);
break; break;
} }
case OP_JMP: { case OP_JMP: { /* doesn't change registers, but changes 'jmptarget' */
int b = GETARG_sBx(i); int b = GETARG_sJ(i);
int dest = pc + 1 + b; int dest = pc + 1 + b;
/* jump is forward and do not skip 'lastpc'? */ /* jump does not skip 'lastpc' and is larger than current one? */
if (pc < dest && dest <= lastpc) { if (dest <= lastpc && dest > jmptarget)
if (dest > jmptarget) jmptarget = dest; /* update 'jmptarget' */
jmptarget = dest; /* update 'jmptarget' */ change = 0;
}
break; break;
} }
default: default: /* any instruction that sets A */
if (testAMode(op) && reg == a) /* any instruction that set A */ change = (testAMode(op) && reg == a);
setreg = filterpc(pc, jmptarget);
break; break;
} }
if (change)
setreg = filterpc(pc, jmptarget);
} }
return setreg; return setreg;
} }
static const char *getobjname (Proto *p, int lastpc, int reg, /*
** Check whether table being indexed by instruction 'i' is the
** environment '_ENV'
*/
static const char *gxf (const Proto *p, int pc, Instruction i, int isup) {
int t = GETARG_B(i); /* table index */
const char *name; /* name of indexed variable */
if (isup) /* is an upvalue? */
name = upvalname(p, t);
else
getobjname(p, pc, t, &name);
return (name && strcmp(name, LUA_ENV) == 0) ? "global" : "field";
}
static const char *getobjname (const Proto *p, int lastpc, int reg,
const char **name) { const char **name) {
int pc; int pc;
*name = luaF_getlocalname(p, reg + 1, lastpc); *name = luaF_getlocalname(p, reg + 1, lastpc);
@ -435,15 +548,24 @@ static const char *getobjname (Proto *p, int lastpc, int reg,
return getobjname(p, pc, b, name); /* get name for 'b' */ return getobjname(p, pc, b, name); /* get name for 'b' */
break; break;
} }
case OP_GETTABUP: case OP_GETTABUP: {
int k = GETARG_C(i); /* key index */
kname(p, k, name);
return gxf(p, pc, i, 1);
}
case OP_GETTABLE: { case OP_GETTABLE: {
int k = GETARG_C(i); /* key index */ int k = GETARG_C(i); /* key index */
int t = GETARG_B(i); /* table index */ rname(p, pc, k, name);
const char *vn = (op == OP_GETTABLE) /* name of indexed variable */ return gxf(p, pc, i, 0);
? luaF_getlocalname(p, t + 1, pc) }
: upvalname(p, t); case OP_GETI: {
kname(p, pc, k, name); *name = "integer index";
return (vn && strcmp(vn, LUA_ENV) == 0) ? "global" : "field"; return "field";
}
case OP_GETFIELD: {
int k = GETARG_C(i); /* key index */
kname(p, k, name);
return gxf(p, pc, i, 0);
} }
case OP_GETUPVAL: { case OP_GETUPVAL: {
*name = upvalname(p, GETARG_B(i)); *name = upvalname(p, GETARG_B(i));
@ -460,8 +582,7 @@ static const char *getobjname (Proto *p, int lastpc, int reg,
break; break;
} }
case OP_SELF: { case OP_SELF: {
int k = GETARG_C(i); /* key index */ rkname(p, pc, i, name);
kname(p, pc, k, name);
return "method"; return "method";
} }
default: break; /* go through to return NULL */ default: break; /* go through to return NULL */
@ -471,9 +592,16 @@ static const char *getobjname (Proto *p, int lastpc, int reg,
} }
static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) { /*
TMS tm = (TMS)0; /* to avoid warnings */ ** Try to find a name for a function based on the code that called it.
Proto *p = ci_func(ci)->p; /* calling function */ ** (Only works when function was called by a Lua function.)
** Returns what the name is (e.g., "for iterator", "method",
** "metamethod") and sets '*name' to point to the name.
*/
static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
const char **name) {
TMS tm = (TMS)0; /* (initial value avoids warnings) */
const Proto *p = ci_func(ci)->p; /* calling function */
int pc = currentpc(ci); /* calling instruction index */ int pc = currentpc(ci); /* calling instruction index */
Instruction i = p->code[pc]; /* calling instruction */ Instruction i = p->code[pc]; /* calling instruction */
if (ci->callstatus & CIST_HOOKED) { /* was it called inside a hook? */ if (ci->callstatus & CIST_HOOKED) { /* was it called inside a hook? */
@ -482,24 +610,22 @@ static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
} }
switch (GET_OPCODE(i)) { switch (GET_OPCODE(i)) {
case OP_CALL: case OP_CALL:
case OP_TAILCALL: /* get function name */ case OP_TAILCALL:
return getobjname(p, pc, GETARG_A(i), name); return getobjname(p, pc, GETARG_A(i), name); /* get function name */
case OP_TFORCALL: { /* for iterator */ case OP_TFORCALL: { /* for iterator */
*name = "for iterator"; *name = "for iterator";
return "for iterator"; return "for iterator";
} }
/* all other instructions can call only through metamethods */ /* other instructions can do calls through metamethods */
case OP_SELF: case OP_GETTABUP: case OP_GETTABLE: case OP_SELF: case OP_GETTABUP: case OP_GETTABLE:
case OP_GETI: case OP_GETFIELD:
tm = TM_INDEX; tm = TM_INDEX;
break; break;
case OP_SETTABUP: case OP_SETTABLE: case OP_SETTABUP: case OP_SETTABLE: case OP_SETI: case OP_SETFIELD:
tm = TM_NEWINDEX; tm = TM_NEWINDEX;
break; break;
case OP_ADD: case OP_SUB: case OP_MUL: case OP_MOD: case OP_MMBIN: case OP_MMBINI: case OP_MMBINK: {
case OP_POW: case OP_DIV: case OP_IDIV: case OP_BAND: tm = cast(TMS, GETARG_C(i));
case OP_BOR: case OP_BXOR: case OP_SHL: case OP_SHR: {
int offset = cast_int(GET_OPCODE(i)) - cast_int(OP_ADD); /* ORDER OP */
tm = cast(TMS, offset + cast_int(TM_ADD)); /* ORDER TM */
break; break;
} }
case OP_UNM: tm = TM_UNM; break; case OP_UNM: tm = TM_UNM; break;
@ -507,11 +633,16 @@ static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
case OP_LEN: tm = TM_LEN; break; case OP_LEN: tm = TM_LEN; break;
case OP_CONCAT: tm = TM_CONCAT; break; case OP_CONCAT: tm = TM_CONCAT; break;
case OP_EQ: tm = TM_EQ; break; case OP_EQ: tm = TM_EQ; break;
case OP_LT: tm = TM_LT; break; case OP_LT: case OP_LE: case OP_LTI: case OP_LEI:
case OP_LE: tm = TM_LE; break; *name = "order"; /* '<=' can call '__lt', etc. */
default: lua_assert(0); /* other instructions cannot call a function */ return "metamethod";
case OP_CLOSE: case OP_RETURN:
*name = "close";
return "metamethod";
default:
return NULL; /* cannot find a reasonable name */
} }
*name = getstr(G(L)->tmname[tm]); *name = getstr(G(L)->tmname[tm]) + 2;
return "metamethod"; return "metamethod";
} }
@ -525,8 +656,9 @@ static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
** checks are ISO C and ensure a correct result. ** checks are ISO C and ensure a correct result.
*/ */
static int isinstack (CallInfo *ci, const TValue *o) { static int isinstack (CallInfo *ci, const TValue *o) {
ptrdiff_t i = o - ci->u.l.base; StkId base = ci->func + 1;
return (0 <= i && i < (ci->top - ci->u.l.base) && ci->u.l.base + i == o); ptrdiff_t i = cast(StkId, o) - base;
return (0 <= i && i < (ci->top - base) && s2v(base + i) == o);
} }
@ -557,7 +689,7 @@ static const char *varinfo (lua_State *L, const TValue *o) {
kind = getupvalname(ci, o, &name); /* check whether 'o' is an upvalue */ kind = getupvalname(ci, o, &name); /* check whether 'o' is an upvalue */
if (!kind && isinstack(ci, o)) /* no? try a register */ if (!kind && isinstack(ci, o)) /* no? try a register */
kind = getobjname(ci_func(ci)->p, currentpc(ci), kind = getobjname(ci_func(ci)->p, currentpc(ci),
cast_int(o - ci->u.l.base), &name); cast_int(cast(StkId, o) - (ci->func + 1)), &name);
} }
return (kind) ? luaO_pushfstring(L, " (%s '%s')", kind, name) : ""; return (kind) ? luaO_pushfstring(L, " (%s '%s')", kind, name) : "";
} }
@ -569,6 +701,12 @@ l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
} }
l_noret luaG_forerror (lua_State *L, const TValue *o, const char *what) {
luaG_runerror(L, "bad 'for' %s (number expected, got %s)",
what, luaT_objtypename(L, o));
}
l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) { l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) {
if (ttisstring(p1) || cvt2str(p1)) p1 = p2; if (ttisstring(p1) || cvt2str(p1)) p1 = p2;
luaG_typeerror(L, p1, "concatenate"); luaG_typeerror(L, p1, "concatenate");
@ -577,8 +715,7 @@ l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) {
l_noret luaG_opinterror (lua_State *L, const TValue *p1, l_noret luaG_opinterror (lua_State *L, const TValue *p1,
const TValue *p2, const char *msg) { const TValue *p2, const char *msg) {
lua_Number temp; if (!ttisnumber(p1)) /* first operand is wrong? */
if (!tonumber(p1, &temp)) /* first operand is wrong? */
p2 = p1; /* now second is wrong */ p2 = p1; /* now second is wrong */
luaG_typeerror(L, p2, msg); luaG_typeerror(L, p2, msg);
} }
@ -589,7 +726,7 @@ l_noret luaG_opinterror (lua_State *L, const TValue *p1,
*/ */
l_noret luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2) { l_noret luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2) {
lua_Integer temp; lua_Integer temp;
if (!tointeger(p1, &temp)) if (!tointegerns(p1, &temp))
p2 = p1; p2 = p1;
luaG_runerror(L, "number%s has no integer representation", varinfo(L, p2)); luaG_runerror(L, "number%s has no integer representation", varinfo(L, p2));
} }
@ -610,7 +747,7 @@ const char *luaG_addinfo (lua_State *L, const char *msg, TString *src,
int line) { int line) {
char buff[LUA_IDSIZE]; char buff[LUA_IDSIZE];
if (src) if (src)
luaO_chunkid(buff, getstr(src), LUA_IDSIZE); luaO_chunkid(buff, getstr(src), tsslen(src));
else { /* no source available; use "?" instead */ else { /* no source available; use "?" instead */
buff[0] = '?'; buff[1] = '\0'; buff[0] = '?'; buff[1] = '\0';
} }
@ -621,6 +758,7 @@ const char *luaG_addinfo (lua_State *L, const char *msg, TString *src,
l_noret luaG_errormsg (lua_State *L) { l_noret luaG_errormsg (lua_State *L) {
if (L->errfunc != 0) { /* is there an error handling function? */ if (L->errfunc != 0) { /* is there an error handling function? */
StkId errfunc = restorestack(L, L->errfunc); StkId errfunc = restorestack(L, L->errfunc);
lua_assert(ttisfunction(s2v(errfunc)));
setobjs2s(L, L->top, L->top - 1); /* move argument */ setobjs2s(L, L->top, L->top - 1); /* move argument */
setobjs2s(L, L->top - 1, errfunc); /* push function */ setobjs2s(L, L->top - 1, errfunc); /* push function */
L->top++; /* assume EXTRA_STACK */ L->top++; /* assume EXTRA_STACK */
@ -634,46 +772,70 @@ l_noret luaG_runerror (lua_State *L, const char *fmt, ...) {
CallInfo *ci = L->ci; CallInfo *ci = L->ci;
const char *msg; const char *msg;
va_list argp; va_list argp;
luaC_checkGC(L); /* error message uses memory */
va_start(argp, fmt); va_start(argp, fmt);
msg = luaO_pushvfstring(L, fmt, argp); /* format message */ msg = luaO_pushvfstring(L, fmt, argp); /* format message */
va_end(argp); va_end(argp);
if (isLua(ci)) /* if Lua function, add source:line information */ if (isLua(ci)) /* if Lua function, add source:line information */
luaG_addinfo(L, msg, ci_func(ci)->p->source, currentline(ci)); luaG_addinfo(L, msg, ci_func(ci)->p->source, getcurrentline(ci));
luaG_errormsg(L); luaG_errormsg(L);
} }
void luaG_traceexec (lua_State *L) { /*
** Check whether new instruction 'newpc' is in a different line from
** previous instruction 'oldpc'.
*/
static int changedline (const Proto *p, int oldpc, int newpc) {
while (oldpc++ < newpc) {
if (p->lineinfo[oldpc] != 0)
return (luaG_getfuncline(p, oldpc - 1) != luaG_getfuncline(p, newpc));
}
return 0; /* no line changes in the way */
}
int luaG_traceexec (lua_State *L, const Instruction *pc) {
CallInfo *ci = L->ci; CallInfo *ci = L->ci;
lu_byte mask = L->hookmask; lu_byte mask = L->hookmask;
int counthook = (--L->hookcount == 0 && (mask & LUA_MASKCOUNT)); int counthook;
if (!(mask & (LUA_MASKLINE | LUA_MASKCOUNT))) { /* no hooks? */
ci->u.l.trap = 0; /* don't need to stop again */
return 0; /* turn off 'trap' */
}
pc++; /* reference is always next instruction */
ci->u.l.savedpc = pc; /* save 'pc' */
counthook = (--L->hookcount == 0 && (mask & LUA_MASKCOUNT));
if (counthook) if (counthook)
resethookcount(L); /* reset count */ resethookcount(L); /* reset count */
else if (!(mask & LUA_MASKLINE)) else if (!(mask & LUA_MASKLINE))
return; /* no line hook and count != 0; nothing to be done */ return 1; /* no line hook and count != 0; nothing to be done now */
if (ci->callstatus & CIST_HOOKYIELD) { /* called hook last time? */ if (ci->callstatus & CIST_HOOKYIELD) { /* called hook last time? */
ci->callstatus &= ~CIST_HOOKYIELD; /* erase mark */ ci->callstatus &= ~CIST_HOOKYIELD; /* erase mark */
return; /* do not call hook again (VM yielded, so it did not move) */ return 1; /* do not call hook again (VM yielded, so it did not move) */
} }
if (!isIT(*(ci->u.l.savedpc - 1)))
L->top = ci->top; /* prepare top */
if (counthook) if (counthook)
luaD_hook(L, LUA_HOOKCOUNT, -1); /* call count hook */ luaD_hook(L, LUA_HOOKCOUNT, -1, 0, 0); /* call count hook */
if (mask & LUA_MASKLINE) { if (mask & LUA_MASKLINE) {
Proto *p = ci_func(ci)->p; const Proto *p = ci_func(ci)->p;
int npc = pcRel(ci->u.l.savedpc, p); int npci = pcRel(pc, p);
int newline = getfuncline(p, npc); if (npci == 0 || /* call linehook when enter a new function, */
if (npc == 0 || /* call linehook when enter a new function, */ pc <= L->oldpc || /* when jump back (loop), or when */
ci->u.l.savedpc <= L->oldpc || /* when jump back (loop), or when */ changedline(p, pcRel(L->oldpc, p), npci)) { /* enter new line */
newline != getfuncline(p, pcRel(L->oldpc, p))) /* enter a new line */ int newline = luaG_getfuncline(p, npci);
luaD_hook(L, LUA_HOOKLINE, newline); /* call line hook */ luaD_hook(L, LUA_HOOKLINE, newline, 0, 0); /* call line hook */
}
L->oldpc = pc; /* 'pc' of last call to line hook */
} }
L->oldpc = ci->u.l.savedpc;
if (L->status == LUA_YIELD) { /* did hook yield? */ if (L->status == LUA_YIELD) { /* did hook yield? */
if (counthook) if (counthook)
L->hookcount = 1; /* undo decrement to zero */ L->hookcount = 1; /* undo decrement to zero */
ci->u.l.savedpc--; /* undo increment (resume will increment it again) */ ci->u.l.savedpc--; /* undo increment (resume will increment it again) */
ci->callstatus |= CIST_HOOKYIELD; /* mark that it yielded */ ci->callstatus |= CIST_HOOKYIELD; /* mark that it yielded */
ci->func = L->top - 1; /* protect stack below results */
luaD_throw(L, LUA_YIELD); luaD_throw(L, LUA_YIELD);
} }
return 1; /* keep 'trap' on */
} }

18
lua-5.3.3/src/ldebug.h → lua-5.4.0/src/ldebug.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ldebug.h,v 2.14 2015/05/22 17:45:56 roberto Exp $ ** $Id: ldebug.h $
** Auxiliary functions from Debug Interface module ** Auxiliary functions from Debug Interface module
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -11,15 +11,23 @@
#include "lstate.h" #include "lstate.h"
#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1) #define pcRel(pc, p) (cast_int((pc) - (p)->code) - 1)
#define getfuncline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : -1)
#define resethookcount(L) (L->hookcount = L->basehookcount) #define resethookcount(L) (L->hookcount = L->basehookcount)
/*
** mark for entries in 'lineinfo' array that has absolute information in
** 'abslineinfo' array
*/
#define ABSLINEINFO (-0x80)
LUAI_FUNC int luaG_getfuncline (const Proto *f, int pc);
LUAI_FUNC const char *luaG_findlocal (lua_State *L, CallInfo *ci, int n,
StkId *pos);
LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o, LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o,
const char *opname); const char *opname);
LUAI_FUNC l_noret luaG_forerror (lua_State *L, const TValue *o,
const char *what);
LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1, LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1,
const TValue *p2); const TValue *p2);
LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1, LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1,
@ -33,7 +41,7 @@ LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...);
LUAI_FUNC const char *luaG_addinfo (lua_State *L, const char *msg, LUAI_FUNC const char *luaG_addinfo (lua_State *L, const char *msg,
TString *src, int line); TString *src, int line);
LUAI_FUNC l_noret luaG_errormsg (lua_State *L); LUAI_FUNC l_noret luaG_errormsg (lua_State *L);
LUAI_FUNC void luaG_traceexec (lua_State *L); LUAI_FUNC int luaG_traceexec (lua_State *L, const Instruction *pc);
#endif #endif

594
lua-5.3.3/src/ldo.c → lua-5.4.0/src/ldo.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ldo.c,v 2.151 2015/12/16 16:40:07 roberto Exp $ ** $Id: ldo.c $
** Stack and Call structure of Lua ** Stack and Call structure of Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -88,7 +88,7 @@ struct lua_longjmp {
}; };
static void seterrorobj (lua_State *L, int errcode, StkId oldtop) { void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop) {
switch (errcode) { switch (errcode) {
case LUA_ERRMEM: { /* memory error? */ case LUA_ERRMEM: { /* memory error? */
setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */ setsvalue2s(L, oldtop, G(L)->memerrmsg); /* reuse preregistered msg. */
@ -98,6 +98,10 @@ static void seterrorobj (lua_State *L, int errcode, StkId oldtop) {
setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling")); setsvalue2s(L, oldtop, luaS_newliteral(L, "error in error handling"));
break; break;
} }
case CLOSEPROTECT: {
setnilvalue(s2v(oldtop)); /* no error message */
break;
}
default: { default: {
setobjs2s(L, oldtop, L->top - 1); /* error message on current top */ setobjs2s(L, oldtop, L->top - 1); /* error message on current top */
break; break;
@ -114,6 +118,7 @@ l_noret luaD_throw (lua_State *L, int errcode) {
} }
else { /* thread has no error handler */ else { /* thread has no error handler */
global_State *g = G(L); global_State *g = G(L);
errcode = luaF_close(L, L->stack, errcode); /* close all upvalues */
L->status = cast_byte(errcode); /* mark it as dead */ L->status = cast_byte(errcode); /* mark it as dead */
if (g->mainthread->errorJmp) { /* main thread has a handler? */ if (g->mainthread->errorJmp) { /* main thread has a handler? */
setobjs2s(L, g->mainthread->top++, L->top - 1); /* copy error obj. */ setobjs2s(L, g->mainthread->top++, L->top - 1); /* copy error obj. */
@ -121,7 +126,7 @@ l_noret luaD_throw (lua_State *L, int errcode) {
} }
else { /* no handler at all; abort */ else { /* no handler at all; abort */
if (g->panic) { /* panic function? */ if (g->panic) { /* panic function? */
seterrorobj(L, errcode, L->top); /* assume EXTRA_STACK */ luaD_seterrorobj(L, errcode, L->top); /* assume EXTRA_STACK */
if (L->ci->top < L->top) if (L->ci->top < L->top)
L->ci->top = L->top; /* pushing msg. can break this invariant */ L->ci->top = L->top; /* pushing msg. can break this invariant */
lua_unlock(L); lua_unlock(L);
@ -134,7 +139,8 @@ l_noret luaD_throw (lua_State *L, int errcode) {
int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) { int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
unsigned short oldnCcalls = L->nCcalls; global_State *g = G(L);
l_uint32 oldnCcalls = g->Cstacklimit - (L->nCcalls + L->nci);
struct lua_longjmp lj; struct lua_longjmp lj;
lj.status = LUA_OK; lj.status = LUA_OK;
lj.previous = L->errorJmp; /* chain new error handler */ lj.previous = L->errorJmp; /* chain new error handler */
@ -143,7 +149,7 @@ int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
(*f)(L, ud); (*f)(L, ud);
); );
L->errorJmp = lj.previous; /* restore old error handler */ L->errorJmp = lj.previous; /* restore old error handler */
L->nCcalls = oldnCcalls; L->nCcalls = g->Cstacklimit - oldnCcalls - L->nci;
return lj.status; return lj.status;
} }
@ -155,17 +161,19 @@ int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
** Stack reallocation ** Stack reallocation
** =================================================================== ** ===================================================================
*/ */
static void correctstack (lua_State *L, TValue *oldstack) { static void correctstack (lua_State *L, StkId oldstack, StkId newstack) {
CallInfo *ci; CallInfo *ci;
UpVal *up; UpVal *up;
L->top = (L->top - oldstack) + L->stack; if (oldstack == newstack)
return; /* stack address did not change */
L->top = (L->top - oldstack) + newstack;
for (up = L->openupval; up != NULL; up = up->u.open.next) for (up = L->openupval; up != NULL; up = up->u.open.next)
up->v = (up->v - oldstack) + L->stack; up->v = s2v((uplevel(up) - oldstack) + newstack);
for (ci = L->ci; ci != NULL; ci = ci->previous) { for (ci = L->ci; ci != NULL; ci = ci->previous) {
ci->top = (ci->top - oldstack) + L->stack; ci->top = (ci->top - oldstack) + newstack;
ci->func = (ci->func - oldstack) + L->stack; ci->func = (ci->func - oldstack) + newstack;
if (isLua(ci)) if (isLua(ci))
ci->u.l.base = (ci->u.l.base - oldstack) + L->stack; ci->u.l.trap = 1; /* signal to update 'trap' in 'luaV_execute' */
} }
} }
@ -174,36 +182,53 @@ static void correctstack (lua_State *L, TValue *oldstack) {
#define ERRORSTACKSIZE (LUAI_MAXSTACK + 200) #define ERRORSTACKSIZE (LUAI_MAXSTACK + 200)
void luaD_reallocstack (lua_State *L, int newsize) { int luaD_reallocstack (lua_State *L, int newsize, int raiseerror) {
TValue *oldstack = L->stack;
int lim = L->stacksize; int lim = L->stacksize;
StkId newstack = luaM_reallocvector(L, L->stack, lim, newsize, StackValue);
lua_assert(newsize <= LUAI_MAXSTACK || newsize == ERRORSTACKSIZE); lua_assert(newsize <= LUAI_MAXSTACK || newsize == ERRORSTACKSIZE);
lua_assert(L->stack_last - L->stack == L->stacksize - EXTRA_STACK); lua_assert(L->stack_last - L->stack == L->stacksize - EXTRA_STACK);
luaM_reallocvector(L, L->stack, L->stacksize, newsize, TValue); if (unlikely(newstack == NULL)) { /* reallocation failed? */
if (raiseerror)
luaM_error(L);
else return 0; /* do not raise an error */
}
for (; lim < newsize; lim++) for (; lim < newsize; lim++)
setnilvalue(L->stack + lim); /* erase new segment */ setnilvalue(s2v(newstack + lim)); /* erase new segment */
correctstack(L, L->stack, newstack);
L->stack = newstack;
L->stacksize = newsize; L->stacksize = newsize;
L->stack_last = L->stack + newsize - EXTRA_STACK; L->stack_last = L->stack + newsize - EXTRA_STACK;
correctstack(L, oldstack); return 1;
} }
void luaD_growstack (lua_State *L, int n) { /*
** Try to grow the stack by at least 'n' elements. when 'raiseerror'
** is true, raises any error; otherwise, return 0 in case of errors.
*/
int luaD_growstack (lua_State *L, int n, int raiseerror) {
int size = L->stacksize; int size = L->stacksize;
if (size > LUAI_MAXSTACK) /* error after extra size? */ int newsize = 2 * size; /* tentative new size */
luaD_throw(L, LUA_ERRERR); if (unlikely(size > LUAI_MAXSTACK)) { /* need more space after extra size? */
if (raiseerror)
luaD_throw(L, LUA_ERRERR); /* error inside message handler */
else return 0;
}
else { else {
int needed = cast_int(L->top - L->stack) + n + EXTRA_STACK; int needed = cast_int(L->top - L->stack) + n + EXTRA_STACK;
int newsize = 2 * size; if (newsize > LUAI_MAXSTACK) /* cannot cross the limit */
if (newsize > LUAI_MAXSTACK) newsize = LUAI_MAXSTACK; newsize = LUAI_MAXSTACK;
if (newsize < needed) newsize = needed; if (newsize < needed) /* but must respect what was asked for */
if (newsize > LUAI_MAXSTACK) { /* stack overflow? */ newsize = needed;
luaD_reallocstack(L, ERRORSTACKSIZE); if (unlikely(newsize > LUAI_MAXSTACK)) { /* stack overflow? */
luaG_runerror(L, "stack overflow"); /* add extra size to be able to handle the error message */
luaD_reallocstack(L, ERRORSTACKSIZE, raiseerror);
if (raiseerror)
luaG_runerror(L, "stack overflow");
else return 0;
} }
else } /* else no errors */
luaD_reallocstack(L, newsize); return luaD_reallocstack(L, newsize, raiseerror);
}
} }
@ -211,9 +236,9 @@ static int stackinuse (lua_State *L) {
CallInfo *ci; CallInfo *ci;
StkId lim = L->top; StkId lim = L->top;
for (ci = L->ci; ci != NULL; ci = ci->previous) { for (ci = L->ci; ci != NULL; ci = ci->previous) {
lua_assert(ci->top <= L->stack_last);
if (lim < ci->top) lim = ci->top; if (lim < ci->top) lim = ci->top;
} }
lua_assert(lim <= L->stack_last);
return cast_int(lim - L->stack) + 1; /* part of stack in use */ return cast_int(lim - L->stack) + 1; /* part of stack in use */
} }
@ -221,16 +246,16 @@ static int stackinuse (lua_State *L) {
void luaD_shrinkstack (lua_State *L) { void luaD_shrinkstack (lua_State *L) {
int inuse = stackinuse(L); int inuse = stackinuse(L);
int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK; int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK;
if (goodsize > LUAI_MAXSTACK) goodsize = LUAI_MAXSTACK; if (goodsize > LUAI_MAXSTACK)
if (L->stacksize > LUAI_MAXSTACK) /* was handling stack overflow? */ goodsize = LUAI_MAXSTACK; /* respect stack limit */
luaE_freeCI(L); /* free all CIs (list grew because of an error) */ /* if thread is currently not handling a stack overflow and its
else good size is smaller than current size, shrink its stack */
luaE_shrinkCI(L); /* shrink list */ if (inuse <= (LUAI_MAXSTACK - EXTRA_STACK) &&
if (inuse <= LUAI_MAXSTACK && /* not handling stack overflow? */ goodsize < L->stacksize)
goodsize < L->stacksize) /* trying to shrink? */ luaD_reallocstack(L, goodsize, 0); /* ok if that fails */
luaD_reallocstack(L, goodsize); /* shrink it */ else /* don't change stack */
else condmovestack(L,{},{}); /* (change only for debugging) */
condmovestack(L,,); /* don't change stack (change only for debugging) */ luaE_shrinkCI(L); /* shrink CI list */
} }
@ -244,12 +269,14 @@ void luaD_inctop (lua_State *L) {
/* /*
** Call a hook for the given event. Make sure there is a hook to be ** Call a hook for the given event. Make sure there is a hook to be
** called. (Both 'L->hook' and 'L->hookmask', which triggers this ** called. (Both 'L->hook' and 'L->hookmask', which trigger this
** function, can be changed asynchronously by signals.) ** function, can be changed asynchronously by signals.)
*/ */
void luaD_hook (lua_State *L, int event, int line) { void luaD_hook (lua_State *L, int event, int line,
int ftransfer, int ntransfer) {
lua_Hook hook = L->hook; lua_Hook hook = L->hook;
if (hook && L->allowhook) { /* make sure there is a hook */ if (hook && L->allowhook) { /* make sure there is a hook */
int mask = CIST_HOOKED;
CallInfo *ci = L->ci; CallInfo *ci = L->ci;
ptrdiff_t top = savestack(L, L->top); ptrdiff_t top = savestack(L, L->top);
ptrdiff_t ci_top = savestack(L, ci->top); ptrdiff_t ci_top = savestack(L, ci->top);
@ -257,11 +284,16 @@ void luaD_hook (lua_State *L, int event, int line) {
ar.event = event; ar.event = event;
ar.currentline = line; ar.currentline = line;
ar.i_ci = ci; ar.i_ci = ci;
if (ntransfer != 0) {
mask |= CIST_TRAN; /* 'ci' has transfer information */
ci->u2.transferinfo.ftransfer = ftransfer;
ci->u2.transferinfo.ntransfer = ntransfer;
}
luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */ luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
ci->top = L->top + LUA_MINSTACK; if (L->top + LUA_MINSTACK > ci->top)
lua_assert(ci->top <= L->stack_last); ci->top = L->top + LUA_MINSTACK;
L->allowhook = 0; /* cannot call hooks inside a hook */ L->allowhook = 0; /* cannot call hooks inside a hook */
ci->callstatus |= CIST_HOOKED; ci->callstatus |= mask;
lua_unlock(L); lua_unlock(L);
(*hook)(L, &ar); (*hook)(L, &ar);
lua_lock(L); lua_lock(L);
@ -269,136 +301,66 @@ void luaD_hook (lua_State *L, int event, int line) {
L->allowhook = 1; L->allowhook = 1;
ci->top = restorestack(L, ci_top); ci->top = restorestack(L, ci_top);
L->top = restorestack(L, top); L->top = restorestack(L, top);
ci->callstatus &= ~CIST_HOOKED; ci->callstatus &= ~mask;
} }
} }
static void callhook (lua_State *L, CallInfo *ci) { /*
int hook = LUA_HOOKCALL; ** Executes a call hook for Lua functions. This function is called
** whenever 'hookmask' is not zero, so it checks whether call hooks are
** active.
*/
void luaD_hookcall (lua_State *L, CallInfo *ci) {
int hook = (ci->callstatus & CIST_TAIL) ? LUA_HOOKTAILCALL : LUA_HOOKCALL;
Proto *p;
if (!(L->hookmask & LUA_MASKCALL)) /* some other hook? */
return; /* don't call hook */
p = clLvalue(s2v(ci->func))->p;
L->top = ci->top; /* prepare top */
ci->u.l.savedpc++; /* hooks assume 'pc' is already incremented */ ci->u.l.savedpc++; /* hooks assume 'pc' is already incremented */
if (isLua(ci->previous) && luaD_hook(L, hook, -1, 1, p->numparams);
GET_OPCODE(*(ci->previous->u.l.savedpc - 1)) == OP_TAILCALL) {
ci->callstatus |= CIST_TAIL;
hook = LUA_HOOKTAILCALL;
}
luaD_hook(L, hook, -1);
ci->u.l.savedpc--; /* correct 'pc' */ ci->u.l.savedpc--; /* correct 'pc' */
} }
static StkId adjust_varargs (lua_State *L, Proto *p, int actual) { static StkId rethook (lua_State *L, CallInfo *ci, StkId firstres, int nres) {
int i; ptrdiff_t oldtop = savestack(L, L->top); /* hook may change top */
int nfixargs = p->numparams; int delta = 0;
StkId base, fixed; if (isLuacode(ci)) {
/* move fixed parameters to final position */ Proto *p = clLvalue(s2v(ci->func))->p;
fixed = L->top - actual; /* first fixed argument */ if (p->is_vararg)
base = L->top; /* final position of first argument */ delta = ci->u.l.nextraargs + p->numparams + 1;
for (i = 0; i < nfixargs && i < actual; i++) { if (L->top < ci->top)
setobjs2s(L, L->top++, fixed + i); L->top = ci->top; /* correct top to run hook */
setnilvalue(fixed + i); /* erase original copy (for GC) */
} }
for (; i < nfixargs; i++) if (L->hookmask & LUA_MASKRET) { /* is return hook on? */
setnilvalue(L->top++); /* complete missing arguments */ int ftransfer;
return base; ci->func += delta; /* if vararg, back to virtual 'func' */
ftransfer = cast(unsigned short, firstres - ci->func);
luaD_hook(L, LUA_HOOKRET, -1, ftransfer, nres); /* call it */
ci->func -= delta;
}
if (isLua(ci->previous))
L->oldpc = ci->previous->u.l.savedpc; /* update 'oldpc' */
return restorestack(L, oldtop);
} }
/* /*
** Check whether __call metafield of 'func' is a function. If so, put ** Check whether 'func' has a '__call' metafield. If so, put it in the
** it in stack below original 'func' so that 'luaD_precall' can call ** stack, below original 'func', so that 'luaD_call' can call it. Raise
** it. Raise an error if __call metafield is not a function. ** an error if there is no '__call' metafield.
*/ */
static void tryfuncTM (lua_State *L, StkId func) { void luaD_tryfuncTM (lua_State *L, StkId func) {
const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL); const TValue *tm = luaT_gettmbyobj(L, s2v(func), TM_CALL);
StkId p; StkId p;
if (!ttisfunction(tm)) if (unlikely(ttisnil(tm)))
luaG_typeerror(L, func, "call"); luaG_typeerror(L, s2v(func), "call"); /* nothing to call */
/* Open a hole inside the stack at 'func' */ for (p = L->top; p > func; p--) /* open space for metamethod */
for (p = L->top; p > func; p--)
setobjs2s(L, p, p-1); setobjs2s(L, p, p-1);
L->top++; /* slot ensured by caller */ L->top++; /* stack space pre-allocated by the caller */
setobj2s(L, func, tm); /* tag method is the new function to be called */ setobj2s(L, func, tm); /* metamethod is the new function to be called */
}
#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L)))
/* macro to check stack size, preserving 'p' */
#define checkstackp(L,n,p) \
luaD_checkstackaux(L, n, \
ptrdiff_t t__ = savestack(L, p); /* save 'p' */ \
luaC_checkGC(L), /* stack grow uses memory */ \
p = restorestack(L, t__)) /* 'pos' part: restore 'p' */
/*
** Prepares a function call: checks the stack, creates a new CallInfo
** entry, fills in the relevant information, calls hook if needed.
** If function is a C function, does the call, too. (Otherwise, leave
** the execution ('luaV_execute') to the caller, to allow stackless
** calls.) Returns true iff function has been executed (C function).
*/
int luaD_precall (lua_State *L, StkId func, int nresults) {
lua_CFunction f;
CallInfo *ci;
switch (ttype(func)) {
case LUA_TCCL: /* C closure */
f = clCvalue(func)->f;
goto Cfunc;
case LUA_TLCF: /* light C function */
f = fvalue(func);
Cfunc: {
int n; /* number of returns */
checkstackp(L, LUA_MINSTACK, func); /* ensure minimum stack size */
ci = next_ci(L); /* now 'enter' new function */
ci->nresults = nresults;
ci->func = func;
ci->top = L->top + LUA_MINSTACK;
lua_assert(ci->top <= L->stack_last);
ci->callstatus = 0;
if (L->hookmask & LUA_MASKCALL)
luaD_hook(L, LUA_HOOKCALL, -1);
lua_unlock(L);
n = (*f)(L); /* do the actual call */
lua_lock(L);
api_checknelems(L, n);
luaD_poscall(L, ci, L->top - n, n);
return 1;
}
case LUA_TLCL: { /* Lua function: prepare its call */
StkId base;
Proto *p = clLvalue(func)->p;
int n = cast_int(L->top - func) - 1; /* number of real arguments */
int fsize = p->maxstacksize; /* frame size */
checkstackp(L, fsize, func);
if (p->is_vararg != 1) { /* do not use vararg? */
for (; n < p->numparams; n++)
setnilvalue(L->top++); /* complete missing arguments */
base = func + 1;
}
else
base = adjust_varargs(L, p, n);
ci = next_ci(L); /* now 'enter' new function */
ci->nresults = nresults;
ci->func = func;
ci->u.l.base = base;
L->top = ci->top = base + fsize;
lua_assert(ci->top <= L->stack_last);
ci->u.l.savedpc = p->code; /* starting point */
ci->callstatus = CIST_LUA;
if (L->hookmask & LUA_MASKCALL)
callhook(L, ci);
return 0;
}
default: { /* not a function */
checkstackp(L, 1, func); /* ensure space for metamethod */
tryfuncTM(L, func); /* try to get '__call' metamethod */
return luaD_precall(L, func, nresults); /* now it must be a function */
}
}
} }
@ -408,78 +370,82 @@ int luaD_precall (lua_State *L, StkId func, int nresults) {
** expressions, multiple results for tail calls/single parameters) ** expressions, multiple results for tail calls/single parameters)
** separated. ** separated.
*/ */
static int moveresults (lua_State *L, const TValue *firstResult, StkId res, static void moveresults (lua_State *L, StkId res, int nres, int wanted) {
int nres, int wanted) { StkId firstresult;
int i;
switch (wanted) { /* handle typical cases separately */ switch (wanted) { /* handle typical cases separately */
case 0: break; /* nothing to move */ case 0: /* no values needed */
case 1: { /* one result needed */ L->top = res;
return;
case 1: /* one value needed */
if (nres == 0) /* no results? */ if (nres == 0) /* no results? */
firstResult = luaO_nilobject; /* adjust with nil */ setnilvalue(s2v(res)); /* adjust with nil */
setobjs2s(L, res, firstResult); /* move it to proper place */ else
setobjs2s(L, res, L->top - nres); /* move it to proper place */
L->top = res + 1;
return;
case LUA_MULTRET:
wanted = nres; /* we want all results */
break; break;
} default: /* multiple results (or to-be-closed variables) */
case LUA_MULTRET: { if (hastocloseCfunc(wanted)) { /* to-be-closed variables? */
int i; ptrdiff_t savedres = savestack(L, res);
for (i = 0; i < nres; i++) /* move all results to correct place */ luaF_close(L, res, LUA_OK); /* may change the stack */
setobjs2s(L, res + i, firstResult + i); res = restorestack(L, savedres);
L->top = res + nres; wanted = codeNresults(wanted); /* correct value */
return 0; /* wanted == LUA_MULTRET */ if (wanted == LUA_MULTRET)
} wanted = nres;
default: {
int i;
if (wanted <= nres) { /* enough results? */
for (i = 0; i < wanted; i++) /* move wanted results to correct place */
setobjs2s(L, res + i, firstResult + i);
}
else { /* not enough results; use all of them plus nils */
for (i = 0; i < nres; i++) /* move all results to correct place */
setobjs2s(L, res + i, firstResult + i);
for (; i < wanted; i++) /* complete wanted number of results */
setnilvalue(res + i);
} }
break; break;
}
} }
firstresult = L->top - nres; /* index of first result */
/* move all results to correct place */
for (i = 0; i < nres && i < wanted; i++)
setobjs2s(L, res + i, firstresult + i);
for (; i < wanted; i++) /* complete wanted number of results */
setnilvalue(s2v(res + i));
L->top = res + wanted; /* top points after the last result */ L->top = res + wanted; /* top points after the last result */
return 1;
} }
/* /*
** Finishes a function call: calls hook if necessary, removes CallInfo, ** Finishes a function call: calls hook if necessary, removes CallInfo,
** moves current number of results to proper place; returns 0 iff call ** moves current number of results to proper place.
** wanted multiple (variable number of) results.
*/ */
int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, int nres) { void luaD_poscall (lua_State *L, CallInfo *ci, int nres) {
StkId res; if (L->hookmask)
int wanted = ci->nresults; L->top = rethook(L, ci, L->top - nres, nres);
if (L->hookmask & (LUA_MASKRET | LUA_MASKLINE)) {
if (L->hookmask & LUA_MASKRET) {
ptrdiff_t fr = savestack(L, firstResult); /* hook may change stack */
luaD_hook(L, LUA_HOOKRET, -1);
firstResult = restorestack(L, fr);
}
L->oldpc = ci->previous->u.l.savedpc; /* 'oldpc' for caller function */
}
res = ci->func; /* res == final position of 1st result */
L->ci = ci->previous; /* back to caller */ L->ci = ci->previous; /* back to caller */
/* move results to proper place */ /* move results to proper place */
return moveresults(L, firstResult, res, nres, wanted); moveresults(L, ci->func, nres, ci->nresults);
} }
#define next_ci(L) (L->ci->next ? L->ci->next : luaE_extendCI(L))
/* /*
** Check appropriate error for stack overflow ("regular" overflow or ** Prepare a function for a tail call, building its call info on top
** overflow while handling stack overflow). If 'nCalls' is larger than ** of the current call info. 'narg1' is the number of arguments plus 1
** LUAI_MAXCCALLS (which means it is handling a "regular" overflow) but ** (so that it includes the function itself).
** smaller than 9/8 of LUAI_MAXCCALLS, does not report an error (to
** allow overflow handling to work)
*/ */
static void stackerror (lua_State *L) { void luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int narg1) {
if (L->nCcalls == LUAI_MAXCCALLS) Proto *p = clLvalue(s2v(func))->p;
luaG_runerror(L, "C stack overflow"); int fsize = p->maxstacksize; /* frame size */
else if (L->nCcalls >= (LUAI_MAXCCALLS + (LUAI_MAXCCALLS>>3))) int nfixparams = p->numparams;
luaD_throw(L, LUA_ERRERR); /* error while handing stack error */ int i;
for (i = 0; i < narg1; i++) /* move down function and arguments */
setobjs2s(L, ci->func + i, func + i);
checkstackGC(L, fsize);
func = ci->func; /* moved-down function */
for (; narg1 <= nfixparams; narg1++)
setnilvalue(s2v(func + narg1)); /* complete missing arguments */
ci->top = func + 1 + fsize; /* top for new function */
lua_assert(ci->top <= L->stack_last);
ci->u.l.savedpc = p->code; /* starting point */
ci->callstatus |= CIST_TAIL;
L->top = func + narg1; /* set top */
} }
@ -489,22 +455,76 @@ static void stackerror (lua_State *L) {
** When returns, all the results are on the stack, starting at the original ** When returns, all the results are on the stack, starting at the original
** function position. ** function position.
*/ */
void luaD_call (lua_State *L, StkId func, int nResults) { void luaD_call (lua_State *L, StkId func, int nresults) {
if (++L->nCcalls >= LUAI_MAXCCALLS) lua_CFunction f;
stackerror(L); retry:
if (!luaD_precall(L, func, nResults)) /* is a Lua function? */ switch (ttypetag(s2v(func))) {
luaV_execute(L); /* call it */ case LUA_VCCL: /* C closure */
L->nCcalls--; f = clCvalue(s2v(func))->f;
goto Cfunc;
case LUA_VLCF: /* light C function */
f = fvalue(s2v(func));
Cfunc: {
int n; /* number of returns */
CallInfo *ci = next_ci(L);
checkstackp(L, LUA_MINSTACK, func); /* ensure minimum stack size */
ci->nresults = nresults;
ci->callstatus = CIST_C;
ci->top = L->top + LUA_MINSTACK;
ci->func = func;
L->ci = ci;
lua_assert(ci->top <= L->stack_last);
if (L->hookmask & LUA_MASKCALL) {
int narg = cast_int(L->top - func) - 1;
luaD_hook(L, LUA_HOOKCALL, -1, 1, narg);
}
lua_unlock(L);
n = (*f)(L); /* do the actual call */
lua_lock(L);
api_checknelems(L, n);
luaD_poscall(L, ci, n);
break;
}
case LUA_VLCL: { /* Lua function */
CallInfo *ci = next_ci(L);
Proto *p = clLvalue(s2v(func))->p;
int narg = cast_int(L->top - func) - 1; /* number of real arguments */
int nfixparams = p->numparams;
int fsize = p->maxstacksize; /* frame size */
checkstackp(L, fsize, func);
ci->nresults = nresults;
ci->u.l.savedpc = p->code; /* starting point */
ci->callstatus = 0;
ci->top = func + 1 + fsize;
ci->func = func;
L->ci = ci;
for (; narg < nfixparams; narg++)
setnilvalue(s2v(L->top++)); /* complete missing arguments */
lua_assert(ci->top <= L->stack_last);
luaV_execute(L, ci); /* run the function */
break;
}
default: { /* not a function */
checkstackp(L, 1, func); /* space for metamethod */
luaD_tryfuncTM(L, func); /* try to get '__call' metamethod */
goto retry; /* try again with metamethod */
}
}
} }
/* /*
** Similar to 'luaD_call', but does not allow yields during the call ** Similar to 'luaD_call', but does not allow yields during the call.
** If there is a stack overflow, freeing all CI structures will
** force the subsequent call to invoke 'luaE_extendCI', which then
** will raise any errors.
*/ */
void luaD_callnoyield (lua_State *L, StkId func, int nResults) { void luaD_callnoyield (lua_State *L, StkId func, int nResults) {
L->nny++; incXCcalls(L);
if (getCcalls(L) <= CSTACKERR) /* possible stack overflow? */
luaE_freeCI(L);
luaD_call(L, func, nResults); luaD_call(L, func, nResults);
L->nny--; decXCcalls(L);
} }
@ -516,23 +536,21 @@ static void finishCcall (lua_State *L, int status) {
CallInfo *ci = L->ci; CallInfo *ci = L->ci;
int n; int n;
/* must have a continuation and must be able to call it */ /* must have a continuation and must be able to call it */
lua_assert(ci->u.c.k != NULL && L->nny == 0); lua_assert(ci->u.c.k != NULL && yieldable(L));
/* error status can only happen in a protected call */ /* error status can only happen in a protected call */
lua_assert((ci->callstatus & CIST_YPCALL) || status == LUA_YIELD); lua_assert((ci->callstatus & CIST_YPCALL) || status == LUA_YIELD);
if (ci->callstatus & CIST_YPCALL) { /* was inside a pcall? */ if (ci->callstatus & CIST_YPCALL) { /* was inside a pcall? */
ci->callstatus &= ~CIST_YPCALL; /* finish 'lua_pcall' */ ci->callstatus &= ~CIST_YPCALL; /* continuation is also inside it */
L->errfunc = ci->u.c.old_errfunc; L->errfunc = ci->u.c.old_errfunc; /* with the same error function */
} }
/* finish 'lua_callk'/'lua_pcall'; CIST_YPCALL and 'errfunc' already /* finish 'lua_callk'/'lua_pcall'; CIST_YPCALL and 'errfunc' already
handled */ handled */
adjustresults(L, ci->nresults); adjustresults(L, ci->nresults);
/* call continuation function */
lua_unlock(L); lua_unlock(L);
n = (*ci->u.c.k)(L, status, ci->u.c.ctx); n = (*ci->u.c.k)(L, status, ci->u.c.ctx); /* call continuation function */
lua_lock(L); lua_lock(L);
api_checknelems(L, n); api_checknelems(L, n);
/* finish 'luaD_precall' */ luaD_poscall(L, ci, n); /* finish 'luaD_call' */
luaD_poscall(L, ci, L->top - n, n);
} }
@ -545,14 +563,15 @@ static void finishCcall (lua_State *L, int status) {
** status is LUA_YIELD). ** status is LUA_YIELD).
*/ */
static void unroll (lua_State *L, void *ud) { static void unroll (lua_State *L, void *ud) {
CallInfo *ci;
if (ud != NULL) /* error status? */ if (ud != NULL) /* error status? */
finishCcall(L, *(int *)ud); /* finish 'lua_pcallk' callee */ finishCcall(L, *(int *)ud); /* finish 'lua_pcallk' callee */
while (L->ci != &L->base_ci) { /* something in the stack */ while ((ci = L->ci) != &L->base_ci) { /* something in the stack */
if (!isLua(L->ci)) /* C function? */ if (!isLua(ci)) /* C function? */
finishCcall(L, LUA_YIELD); /* complete its execution */ finishCcall(L, LUA_YIELD); /* complete its execution */
else { /* Lua function */ else { /* Lua function */
luaV_finishOp(L); /* finish interrupted instruction */ luaV_finishOp(L); /* finish interrupted instruction */
luaV_execute(L); /* execute down to higher C 'boundary' */ luaV_execute(L, ci); /* execute down to higher C 'boundary' */
} }
} }
} }
@ -582,12 +601,12 @@ static int recover (lua_State *L, int status) {
CallInfo *ci = findpcall(L); CallInfo *ci = findpcall(L);
if (ci == NULL) return 0; /* no recovery point */ if (ci == NULL) return 0; /* no recovery point */
/* "finish" luaD_pcall */ /* "finish" luaD_pcall */
oldtop = restorestack(L, ci->extra); oldtop = restorestack(L, ci->u2.funcidx);
luaF_close(L, oldtop); luaF_close(L, oldtop, status); /* may change the stack */
seterrorobj(L, status, oldtop); oldtop = restorestack(L, ci->u2.funcidx);
luaD_seterrorobj(L, status, oldtop);
L->ci = ci; L->ci = ci;
L->allowhook = getoah(ci->callstatus); /* restore original 'allowhook' */ L->allowhook = getoah(ci->callstatus); /* restore original 'allowhook' */
L->nny = 0; /* should be zero to be yieldable */
luaD_shrinkstack(L); luaD_shrinkstack(L);
L->errfunc = ci->u.c.old_errfunc; L->errfunc = ci->u.c.old_errfunc;
return 1; /* continue running the coroutine */ return 1; /* continue running the coroutine */
@ -595,15 +614,16 @@ static int recover (lua_State *L, int status) {
/* /*
** signal an error in the call to 'resume', not in the execution of the ** Signal an error in the call to 'lua_resume', not in the execution
** coroutine itself. (Such errors should not be handled by any coroutine ** of the coroutine itself. (Such errors should not be handled by any
** error handler and should not kill the coroutine.) ** coroutine error handler and should not kill the coroutine.)
*/ */
static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) { static int resume_error (lua_State *L, const char *msg, int narg) {
L->top = firstArg; /* remove args from the stack */ L->top -= narg; /* remove args from the stack */
setsvalue2s(L, L->top, luaS_new(L, msg)); /* push error message */ setsvalue2s(L, L->top, luaS_new(L, msg)); /* push error message */
api_incr_top(L); api_incr_top(L);
luaD_throw(L, -1); /* jump back to 'lua_resume' */ lua_unlock(L);
return LUA_ERRRUN;
} }
@ -615,75 +635,72 @@ static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) {
** coroutine. ** coroutine.
*/ */
static void resume (lua_State *L, void *ud) { static void resume (lua_State *L, void *ud) {
int nCcalls = L->nCcalls;
int n = *(cast(int*, ud)); /* number of arguments */ int n = *(cast(int*, ud)); /* number of arguments */
StkId firstArg = L->top - n; /* first argument */ StkId firstArg = L->top - n; /* first argument */
CallInfo *ci = L->ci; CallInfo *ci = L->ci;
if (nCcalls >= LUAI_MAXCCALLS) if (L->status == LUA_OK) { /* starting a coroutine? */
resume_error(L, "C stack overflow", firstArg); luaD_call(L, firstArg - 1, LUA_MULTRET);
if (L->status == LUA_OK) { /* may be starting a coroutine */
if (ci != &L->base_ci) /* not in base level? */
resume_error(L, "cannot resume non-suspended coroutine", firstArg);
/* coroutine is in base level; start running it */
if (!luaD_precall(L, firstArg - 1, LUA_MULTRET)) /* Lua function? */
luaV_execute(L); /* call it */
} }
else if (L->status != LUA_YIELD)
resume_error(L, "cannot resume dead coroutine", firstArg);
else { /* resuming from previous yield */ else { /* resuming from previous yield */
lua_assert(L->status == LUA_YIELD);
L->status = LUA_OK; /* mark that it is running (again) */ L->status = LUA_OK; /* mark that it is running (again) */
ci->func = restorestack(L, ci->extra);
if (isLua(ci)) /* yielded inside a hook? */ if (isLua(ci)) /* yielded inside a hook? */
luaV_execute(L); /* just continue running Lua code */ luaV_execute(L, ci); /* just continue running Lua code */
else { /* 'common' yield */ else { /* 'common' yield */
if (ci->u.c.k != NULL) { /* does it have a continuation function? */ if (ci->u.c.k != NULL) { /* does it have a continuation function? */
lua_unlock(L); lua_unlock(L);
n = (*ci->u.c.k)(L, LUA_YIELD, ci->u.c.ctx); /* call continuation */ n = (*ci->u.c.k)(L, LUA_YIELD, ci->u.c.ctx); /* call continuation */
lua_lock(L); lua_lock(L);
api_checknelems(L, n); api_checknelems(L, n);
firstArg = L->top - n; /* yield results come from continuation */
} }
luaD_poscall(L, ci, firstArg, n); /* finish 'luaD_precall' */ luaD_poscall(L, ci, n); /* finish 'luaD_call' */
} }
unroll(L, NULL); /* run continuation */ unroll(L, NULL); /* run continuation */
} }
lua_assert(nCcalls == L->nCcalls);
} }
LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs,
LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) { int *nresults) {
int status; int status;
unsigned short oldnny = L->nny; /* save "number of non-yieldable" calls */
lua_lock(L); lua_lock(L);
if (L->status == LUA_OK) { /* may be starting a coroutine */
if (L->ci != &L->base_ci) /* not in base level? */
return resume_error(L, "cannot resume non-suspended coroutine", nargs);
else if (L->top - (L->ci->func + 1) == nargs) /* no function? */
return resume_error(L, "cannot resume dead coroutine", nargs);
}
else if (L->status != LUA_YIELD) /* ended with errors? */
return resume_error(L, "cannot resume dead coroutine", nargs);
if (from == NULL)
L->nCcalls = CSTACKTHREAD;
else /* correct 'nCcalls' for this thread */
L->nCcalls = getCcalls(from) + from->nci - L->nci - CSTACKCF;
if (L->nCcalls <= CSTACKERR)
return resume_error(L, "C stack overflow", nargs);
luai_userstateresume(L, nargs); luai_userstateresume(L, nargs);
L->nCcalls = (from) ? from->nCcalls + 1 : 1;
L->nny = 0; /* allow yields */
api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs); api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs);
status = luaD_rawrunprotected(L, resume, &nargs); status = luaD_rawrunprotected(L, resume, &nargs);
if (status == -1) /* error calling 'lua_resume'? */ /* continue running after recoverable errors */
status = LUA_ERRRUN; while (errorstatus(status) && recover(L, status)) {
else { /* continue running after recoverable errors */ /* unroll continuation */
while (errorstatus(status) && recover(L, status)) { status = luaD_rawrunprotected(L, unroll, &status);
/* unroll continuation */
status = luaD_rawrunprotected(L, unroll, &status);
}
if (errorstatus(status)) { /* unrecoverable error? */
L->status = cast_byte(status); /* mark thread as 'dead' */
seterrorobj(L, status, L->top); /* push error message */
L->ci->top = L->top;
}
else lua_assert(status == L->status); /* normal end or yield */
} }
L->nny = oldnny; /* restore 'nny' */ if (likely(!errorstatus(status)))
L->nCcalls--; lua_assert(status == L->status); /* normal end or yield */
lua_assert(L->nCcalls == ((from) ? from->nCcalls : 0)); else { /* unrecoverable error */
L->status = cast_byte(status); /* mark thread as 'dead' */
luaD_seterrorobj(L, status, L->top); /* push error message */
L->ci->top = L->top;
}
*nresults = (status == LUA_YIELD) ? L->ci->u2.nyield
: cast_int(L->top - (L->ci->func + 1));
lua_unlock(L); lua_unlock(L);
return status; return status;
} }
LUA_API int lua_isyieldable (lua_State *L) { LUA_API int lua_isyieldable (lua_State *L) {
return (L->nny == 0); return yieldable(L);
} }
@ -693,21 +710,22 @@ LUA_API int lua_yieldk (lua_State *L, int nresults, lua_KContext ctx,
luai_userstateyield(L, nresults); luai_userstateyield(L, nresults);
lua_lock(L); lua_lock(L);
api_checknelems(L, nresults); api_checknelems(L, nresults);
if (L->nny > 0) { if (unlikely(!yieldable(L))) {
if (L != G(L)->mainthread) if (L != G(L)->mainthread)
luaG_runerror(L, "attempt to yield across a C-call boundary"); luaG_runerror(L, "attempt to yield across a C-call boundary");
else else
luaG_runerror(L, "attempt to yield from outside a coroutine"); luaG_runerror(L, "attempt to yield from outside a coroutine");
} }
L->status = LUA_YIELD; L->status = LUA_YIELD;
ci->extra = savestack(L, ci->func); /* save current 'func' */
if (isLua(ci)) { /* inside a hook? */ if (isLua(ci)) { /* inside a hook? */
lua_assert(!isLuacode(ci));
api_check(L, k == NULL, "hooks cannot continue after yielding"); api_check(L, k == NULL, "hooks cannot continue after yielding");
ci->u2.nyield = 0; /* no results */
} }
else { else {
if ((ci->u.c.k = k) != NULL) /* is there a continuation? */ if ((ci->u.c.k = k) != NULL) /* is there a continuation? */
ci->u.c.ctx = ctx; /* save context */ ci->u.c.ctx = ctx; /* save context */
ci->func = L->top - nresults - 1; /* protect stack below results */ ci->u2.nyield = nresults; /* save number of results */
luaD_throw(L, LUA_YIELD); luaD_throw(L, LUA_YIELD);
} }
lua_assert(ci->callstatus & CIST_HOOKED); /* must be inside a hook */ lua_assert(ci->callstatus & CIST_HOOKED); /* must be inside a hook */
@ -716,22 +734,26 @@ LUA_API int lua_yieldk (lua_State *L, int nresults, lua_KContext ctx,
} }
/*
** Call the C function 'func' in protected mode, restoring basic
** thread information ('allowhook', etc.) and in particular
** its stack level in case of errors.
*/
int luaD_pcall (lua_State *L, Pfunc func, void *u, int luaD_pcall (lua_State *L, Pfunc func, void *u,
ptrdiff_t old_top, ptrdiff_t ef) { ptrdiff_t old_top, ptrdiff_t ef) {
int status; int status;
CallInfo *old_ci = L->ci; CallInfo *old_ci = L->ci;
lu_byte old_allowhooks = L->allowhook; lu_byte old_allowhooks = L->allowhook;
unsigned short old_nny = L->nny;
ptrdiff_t old_errfunc = L->errfunc; ptrdiff_t old_errfunc = L->errfunc;
L->errfunc = ef; L->errfunc = ef;
status = luaD_rawrunprotected(L, func, u); status = luaD_rawrunprotected(L, func, u);
if (status != LUA_OK) { /* an error occurred? */ if (unlikely(status != LUA_OK)) { /* an error occurred? */
StkId oldtop = restorestack(L, old_top); StkId oldtop = restorestack(L, old_top);
luaF_close(L, oldtop); /* close possible pending closures */
seterrorobj(L, status, oldtop);
L->ci = old_ci; L->ci = old_ci;
L->allowhook = old_allowhooks; L->allowhook = old_allowhooks;
L->nny = old_nny; status = luaF_close(L, oldtop, status);
oldtop = restorestack(L, old_top); /* previous call may change stack */
luaD_seterrorobj(L, status, oldtop);
luaD_shrinkstack(L); luaD_shrinkstack(L);
} }
L->errfunc = old_errfunc; L->errfunc = old_errfunc;
@ -782,7 +804,7 @@ int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
const char *mode) { const char *mode) {
struct SParser p; struct SParser p;
int status; int status;
L->nny++; /* cannot yield during parsing */ incnny(L); /* cannot yield during parsing */
p.z = z; p.name = name; p.mode = mode; p.z = z; p.name = name; p.mode = mode;
p.dyd.actvar.arr = NULL; p.dyd.actvar.size = 0; p.dyd.actvar.arr = NULL; p.dyd.actvar.size = 0;
p.dyd.gt.arr = NULL; p.dyd.gt.size = 0; p.dyd.gt.arr = NULL; p.dyd.gt.size = 0;
@ -793,7 +815,7 @@ int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
luaM_freearray(L, p.dyd.actvar.arr, p.dyd.actvar.size); luaM_freearray(L, p.dyd.actvar.arr, p.dyd.actvar.size);
luaM_freearray(L, p.dyd.gt.arr, p.dyd.gt.size); luaM_freearray(L, p.dyd.gt.arr, p.dyd.gt.size);
luaM_freearray(L, p.dyd.label.arr, p.dyd.label.size); luaM_freearray(L, p.dyd.label.arr, p.dyd.label.size);
L->nny--; decnny(L);
return status; return status;
} }

35
lua-5.3.3/src/ldo.h → lua-5.4.0/src/ldo.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ldo.h,v 2.29 2015/12/21 13:02:14 roberto Exp $ ** $Id: ldo.h $
** Stack and Call structure of Lua ** Stack and Call structure of Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -22,7 +22,8 @@
*/ */
#define luaD_checkstackaux(L,n,pre,pos) \ #define luaD_checkstackaux(L,n,pre,pos) \
if (L->stack_last - L->top <= (n)) \ if (L->stack_last - L->top <= (n)) \
{ pre; luaD_growstack(L, n); pos; } else { condmovestack(L,pre,pos); } { pre; luaD_growstack(L, n, 1); pos; } \
else { condmovestack(L,pre,pos); }
/* In general, 'pre'/'pos' are empty (nothing to save) */ /* In general, 'pre'/'pos' are empty (nothing to save) */
#define luaD_checkstack(L,n) luaD_checkstackaux(L,n,(void)0,(void)0) #define luaD_checkstack(L,n) luaD_checkstackaux(L,n,(void)0,(void)0)
@ -30,24 +31,40 @@
#define savestack(L,p) ((char *)(p) - (char *)L->stack) #define savestack(L,p) ((char *)(p) - (char *)L->stack)
#define restorestack(L,n) ((TValue *)((char *)L->stack + (n))) #define restorestack(L,n) ((StkId)((char *)L->stack + (n)))
/* macro to check stack size, preserving 'p' */
#define checkstackp(L,n,p) \
luaD_checkstackaux(L, n, \
ptrdiff_t t__ = savestack(L, p); /* save 'p' */ \
luaC_checkGC(L), /* stack grow uses memory */ \
p = restorestack(L, t__)) /* 'pos' part: restore 'p' */
/* macro to check stack size and GC */
#define checkstackGC(L,fsize) \
luaD_checkstackaux(L, (fsize), (void)0, luaC_checkGC(L))
/* type of protected functions, to be ran by 'runprotected' */ /* type of protected functions, to be ran by 'runprotected' */
typedef void (*Pfunc) (lua_State *L, void *ud); typedef void (*Pfunc) (lua_State *L, void *ud);
LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
const char *mode); const char *mode);
LUAI_FUNC void luaD_hook (lua_State *L, int event, int line); LUAI_FUNC void luaD_hook (lua_State *L, int event, int line,
LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults); int fTransfer, int nTransfer);
LUAI_FUNC void luaD_hookcall (lua_State *L, CallInfo *ci);
LUAI_FUNC void luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int n);
LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults); LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults);
LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults); LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults);
LUAI_FUNC void luaD_tryfuncTM (lua_State *L, StkId func);
LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u, LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
ptrdiff_t oldtop, ptrdiff_t ef); ptrdiff_t oldtop, ptrdiff_t ef);
LUAI_FUNC int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, LUAI_FUNC void luaD_poscall (lua_State *L, CallInfo *ci, int nres);
int nres); LUAI_FUNC int luaD_reallocstack (lua_State *L, int newsize, int raiseerror);
LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize); LUAI_FUNC int luaD_growstack (lua_State *L, int n, int raiseerror);
LUAI_FUNC void luaD_growstack (lua_State *L, int n);
LUAI_FUNC void luaD_shrinkstack (lua_State *L); LUAI_FUNC void luaD_shrinkstack (lua_State *L);
LUAI_FUNC void luaD_inctop (lua_State *L); LUAI_FUNC void luaD_inctop (lua_State *L);

226
lua-5.4.0/src/ldump.c Normal file
View File

@ -0,0 +1,226 @@
/*
** $Id: ldump.c $
** save precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#define ldump_c
#define LUA_CORE
#include "lprefix.h"
#include <stddef.h>
#include "lua.h"
#include "lobject.h"
#include "lstate.h"
#include "lundump.h"
typedef struct {
lua_State *L;
lua_Writer writer;
void *data;
int strip;
int status;
} DumpState;
/*
** All high-level dumps go through dumpVector; you can change it to
** change the endianness of the result
*/
#define dumpVector(D,v,n) dumpBlock(D,v,(n)*sizeof((v)[0]))
#define dumpLiteral(D, s) dumpBlock(D,s,sizeof(s) - sizeof(char))
static void dumpBlock (DumpState *D, const void *b, size_t size) {
if (D->status == 0 && size > 0) {
lua_unlock(D->L);
D->status = (*D->writer)(D->L, b, size, D->data);
lua_lock(D->L);
}
}
#define dumpVar(D,x) dumpVector(D,&x,1)
static void dumpByte (DumpState *D, int y) {
lu_byte x = (lu_byte)y;
dumpVar(D, x);
}
/* dumpInt Buff Size */
#define DIBS ((sizeof(size_t) * 8 / 7) + 1)
static void dumpSize (DumpState *D, size_t x) {
lu_byte buff[DIBS];
int n = 0;
do {
buff[DIBS - (++n)] = x & 0x7f; /* fill buffer in reverse order */
x >>= 7;
} while (x != 0);
buff[DIBS - 1] |= 0x80; /* mark last byte */
dumpVector(D, buff + DIBS - n, n);
}
static void dumpInt (DumpState *D, int x) {
dumpSize(D, x);
}
static void dumpNumber (DumpState *D, lua_Number x) {
dumpVar(D, x);
}
static void dumpInteger (DumpState *D, lua_Integer x) {
dumpVar(D, x);
}
static void dumpString (DumpState *D, const TString *s) {
if (s == NULL)
dumpSize(D, 0);
else {
size_t size = tsslen(s);
const char *str = getstr(s);
dumpSize(D, size + 1);
dumpVector(D, str, size);
}
}
static void dumpCode (DumpState *D, const Proto *f) {
dumpInt(D, f->sizecode);
dumpVector(D, f->code, f->sizecode);
}
static void dumpFunction(DumpState *D, const Proto *f, TString *psource);
static void dumpConstants (DumpState *D, const Proto *f) {
int i;
int n = f->sizek;
dumpInt(D, n);
for (i = 0; i < n; i++) {
const TValue *o = &f->k[i];
int tt = ttypetag(o);
dumpByte(D, tt);
switch (tt) {
case LUA_VNUMFLT:
dumpNumber(D, fltvalue(o));
break;
case LUA_VNUMINT:
dumpInteger(D, ivalue(o));
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
dumpString(D, tsvalue(o));
break;
default:
lua_assert(tt == LUA_VNIL || tt == LUA_VFALSE || tt == LUA_VTRUE);
}
}
}
static void dumpProtos (DumpState *D, const Proto *f) {
int i;
int n = f->sizep;
dumpInt(D, n);
for (i = 0; i < n; i++)
dumpFunction(D, f->p[i], f->source);
}
static void dumpUpvalues (DumpState *D, const Proto *f) {
int i, n = f->sizeupvalues;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpByte(D, f->upvalues[i].instack);
dumpByte(D, f->upvalues[i].idx);
dumpByte(D, f->upvalues[i].kind);
}
}
static void dumpDebug (DumpState *D, const Proto *f) {
int i, n;
n = (D->strip) ? 0 : f->sizelineinfo;
dumpInt(D, n);
dumpVector(D, f->lineinfo, n);
n = (D->strip) ? 0 : f->sizeabslineinfo;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpInt(D, f->abslineinfo[i].pc);
dumpInt(D, f->abslineinfo[i].line);
}
n = (D->strip) ? 0 : f->sizelocvars;
dumpInt(D, n);
for (i = 0; i < n; i++) {
dumpString(D, f->locvars[i].varname);
dumpInt(D, f->locvars[i].startpc);
dumpInt(D, f->locvars[i].endpc);
}
n = (D->strip) ? 0 : f->sizeupvalues;
dumpInt(D, n);
for (i = 0; i < n; i++)
dumpString(D, f->upvalues[i].name);
}
static void dumpFunction (DumpState *D, const Proto *f, TString *psource) {
if (D->strip || f->source == psource)
dumpString(D, NULL); /* no debug info or same source as its parent */
else
dumpString(D, f->source);
dumpInt(D, f->linedefined);
dumpInt(D, f->lastlinedefined);
dumpByte(D, f->numparams);
dumpByte(D, f->is_vararg);
dumpByte(D, f->maxstacksize);
dumpCode(D, f);
dumpConstants(D, f);
dumpUpvalues(D, f);
dumpProtos(D, f);
dumpDebug(D, f);
}
static void dumpHeader (DumpState *D) {
dumpLiteral(D, LUA_SIGNATURE);
dumpByte(D, LUAC_VERSION);
dumpByte(D, LUAC_FORMAT);
dumpLiteral(D, LUAC_DATA);
dumpByte(D, sizeof(Instruction));
dumpByte(D, sizeof(lua_Integer));
dumpByte(D, sizeof(lua_Number));
dumpInteger(D, LUAC_INT);
dumpNumber(D, LUAC_NUM);
}
/*
** dump Lua function as precompiled chunk
*/
int luaU_dump(lua_State *L, const Proto *f, lua_Writer w, void *data,
int strip) {
DumpState D;
D.L = L;
D.writer = w;
D.data = data;
D.strip = strip;
D.status = 0;
dumpHeader(&D);
dumpByte(&D, f->sizeupvalues);
dumpFunction(&D, f, NULL);
return D.status;
}

299
lua-5.4.0/src/lfunc.c Normal file
View File

@ -0,0 +1,299 @@
/*
** $Id: lfunc.c $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#define lfunc_c
#define LUA_CORE
#include "lprefix.h"
#include <stddef.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
CClosure *luaF_newCclosure (lua_State *L, int nupvals) {
GCObject *o = luaC_newobj(L, LUA_VCCL, sizeCclosure(nupvals));
CClosure *c = gco2ccl(o);
c->nupvalues = cast_byte(nupvals);
return c;
}
LClosure *luaF_newLclosure (lua_State *L, int nupvals) {
GCObject *o = luaC_newobj(L, LUA_VLCL, sizeLclosure(nupvals));
LClosure *c = gco2lcl(o);
c->p = NULL;
c->nupvalues = cast_byte(nupvals);
while (nupvals--) c->upvals[nupvals] = NULL;
return c;
}
/*
** fill a closure with new closed upvalues
*/
void luaF_initupvals (lua_State *L, LClosure *cl) {
int i;
for (i = 0; i < cl->nupvalues; i++) {
GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
UpVal *uv = gco2upv(o);
uv->v = &uv->u.value; /* make it closed */
setnilvalue(uv->v);
cl->upvals[i] = uv;
luaC_objbarrier(L, cl, o);
}
}
/*
** Create a new upvalue at the given level, and link it to the list of
** open upvalues of 'L' after entry 'prev'.
**/
static UpVal *newupval (lua_State *L, int tbc, StkId level, UpVal **prev) {
GCObject *o = luaC_newobj(L, LUA_VUPVAL, sizeof(UpVal));
UpVal *uv = gco2upv(o);
UpVal *next = *prev;
uv->v = s2v(level); /* current value lives in the stack */
uv->tbc = tbc;
uv->u.open.next = next; /* link it to list of open upvalues */
uv->u.open.previous = prev;
if (next)
next->u.open.previous = &uv->u.open.next;
*prev = uv;
if (!isintwups(L)) { /* thread not in list of threads with upvalues? */
L->twups = G(L)->twups; /* link it to the list */
G(L)->twups = L;
}
return uv;
}
/*
** Find and reuse, or create if it does not exist, an upvalue
** at the given level.
*/
UpVal *luaF_findupval (lua_State *L, StkId level) {
UpVal **pp = &L->openupval;
UpVal *p;
lua_assert(isintwups(L) || L->openupval == NULL);
while ((p = *pp) != NULL && uplevel(p) >= level) { /* search for it */
lua_assert(!isdead(G(L), p));
if (uplevel(p) == level) /* corresponding upvalue? */
return p; /* return it */
pp = &p->u.open.next;
}
/* not found: create a new upvalue after 'pp' */
return newupval(L, 0, level, pp);
}
static void callclose (lua_State *L, void *ud) {
UNUSED(ud);
luaD_callnoyield(L, L->top - 3, 0);
}
/*
** Prepare closing method plus its arguments for object 'obj' with
** error message 'err'. (This function assumes EXTRA_STACK.)
*/
static int prepclosingmethod (lua_State *L, TValue *obj, TValue *err) {
StkId top = L->top;
const TValue *tm = luaT_gettmbyobj(L, obj, TM_CLOSE);
if (ttisnil(tm)) /* no metamethod? */
return 0; /* nothing to call */
setobj2s(L, top, tm); /* will call metamethod... */
setobj2s(L, top + 1, obj); /* with 'self' as the 1st argument */
setobj2s(L, top + 2, err); /* and error msg. as 2nd argument */
L->top = top + 3; /* add function and arguments */
return 1;
}
/*
** Raise an error with message 'msg', inserting the name of the
** local variable at position 'level' in the stack.
*/
static void varerror (lua_State *L, StkId level, const char *msg) {
int idx = cast_int(level - L->ci->func);
const char *vname = luaG_findlocal(L, L->ci, idx, NULL);
if (vname == NULL) vname = "?";
luaG_runerror(L, msg, vname);
}
/*
** Prepare and call a closing method. If status is OK, code is still
** inside the original protected call, and so any error will be handled
** there. Otherwise, a previous error already activated the original
** protected call, and so the call to the closing method must be
** protected here. (A status == CLOSEPROTECT behaves like a previous
** error, to also run the closing method in protected mode).
** If status is OK, the call to the closing method will be pushed
** at the top of the stack. Otherwise, values are pushed after
** the 'level' of the upvalue being closed, as everything after
** that won't be used again.
*/
static int callclosemth (lua_State *L, StkId level, int status) {
TValue *uv = s2v(level); /* value being closed */
if (likely(status == LUA_OK)) {
if (prepclosingmethod(L, uv, &G(L)->nilvalue)) /* something to call? */
callclose(L, NULL); /* call closing method */
else if (!l_isfalse(uv)) /* non-closable non-false value? */
varerror(L, level, "attempt to close non-closable variable '%s'");
}
else { /* must close the object in protected mode */
ptrdiff_t oldtop;
level++; /* space for error message */
oldtop = savestack(L, level + 1); /* top will be after that */
luaD_seterrorobj(L, status, level); /* set error message */
if (prepclosingmethod(L, uv, s2v(level))) { /* something to call? */
int newstatus = luaD_pcall(L, callclose, NULL, oldtop, 0);
if (newstatus != LUA_OK && status == CLOSEPROTECT) /* first error? */
status = newstatus; /* this will be the new error */
else {
if (newstatus != LUA_OK) /* suppressed error? */
luaE_warnerror(L, "__close metamethod");
/* leave original error (or nil) on top */
L->top = restorestack(L, oldtop);
}
}
/* else no metamethod; ignore this case and keep original error */
}
return status;
}
/*
** Try to create a to-be-closed upvalue
** (can raise a memory-allocation error)
*/
static void trynewtbcupval (lua_State *L, void *ud) {
newupval(L, 1, cast(StkId, ud), &L->openupval);
}
/*
** Create a to-be-closed upvalue. If there is a memory error
** when creating the upvalue, the closing method must be called here,
** as there is no upvalue to call it later.
*/
void luaF_newtbcupval (lua_State *L, StkId level) {
TValue *obj = s2v(level);
lua_assert(L->openupval == NULL || uplevel(L->openupval) < level);
if (!l_isfalse(obj)) { /* false doesn't need to be closed */
int status;
const TValue *tm = luaT_gettmbyobj(L, obj, TM_CLOSE);
if (ttisnil(tm)) /* no metamethod? */
varerror(L, level, "variable '%s' got a non-closable value");
status = luaD_rawrunprotected(L, trynewtbcupval, level);
if (unlikely(status != LUA_OK)) { /* memory error creating upvalue? */
lua_assert(status == LUA_ERRMEM);
luaD_seterrorobj(L, LUA_ERRMEM, level + 1); /* save error message */
/* next call must succeed, as object is closable */
prepclosingmethod(L, s2v(level), s2v(level + 1));
callclose(L, NULL); /* call closing method */
luaD_throw(L, LUA_ERRMEM); /* throw memory error */
}
}
}
void luaF_unlinkupval (UpVal *uv) {
lua_assert(upisopen(uv));
*uv->u.open.previous = uv->u.open.next;
if (uv->u.open.next)
uv->u.open.next->u.open.previous = uv->u.open.previous;
}
int luaF_close (lua_State *L, StkId level, int status) {
UpVal *uv;
while ((uv = L->openupval) != NULL && uplevel(uv) >= level) {
TValue *slot = &uv->u.value; /* new position for value */
lua_assert(uplevel(uv) < L->top);
if (uv->tbc && status != NOCLOSINGMETH) {
/* must run closing method, which may change the stack */
ptrdiff_t levelrel = savestack(L, level);
status = callclosemth(L, uplevel(uv), status);
level = restorestack(L, levelrel);
}
luaF_unlinkupval(uv);
setobj(L, slot, uv->v); /* move value to upvalue slot */
uv->v = slot; /* now current value lives here */
if (!iswhite(uv))
gray2black(uv); /* closed upvalues cannot be gray */
luaC_barrier(L, uv, slot);
}
return status;
}
Proto *luaF_newproto (lua_State *L) {
GCObject *o = luaC_newobj(L, LUA_VPROTO, sizeof(Proto));
Proto *f = gco2p(o);
f->k = NULL;
f->sizek = 0;
f->p = NULL;
f->sizep = 0;
f->code = NULL;
f->sizecode = 0;
f->lineinfo = NULL;
f->sizelineinfo = 0;
f->abslineinfo = NULL;
f->sizeabslineinfo = 0;
f->upvalues = NULL;
f->sizeupvalues = 0;
f->numparams = 0;
f->is_vararg = 0;
f->maxstacksize = 0;
f->locvars = NULL;
f->sizelocvars = 0;
f->linedefined = 0;
f->lastlinedefined = 0;
f->source = NULL;
return f;
}
void luaF_freeproto (lua_State *L, Proto *f) {
luaM_freearray(L, f->code, f->sizecode);
luaM_freearray(L, f->p, f->sizep);
luaM_freearray(L, f->k, f->sizek);
luaM_freearray(L, f->lineinfo, f->sizelineinfo);
luaM_freearray(L, f->abslineinfo, f->sizeabslineinfo);
luaM_freearray(L, f->locvars, f->sizelocvars);
luaM_freearray(L, f->upvalues, f->sizeupvalues);
luaM_free(L, f);
}
/*
** Look for n-th local variable at line 'line' in function 'func'.
** Returns NULL if not found.
*/
const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
int i;
for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
if (pc < f->locvars[i].endpc) { /* is variable active? */
local_number--;
if (local_number == 0)
return getstr(f->locvars[i].varname);
}
}
return NULL; /* not found */
}

69
lua-5.4.0/src/lfunc.h Normal file
View File

@ -0,0 +1,69 @@
/*
** $Id: lfunc.h $
** Auxiliary functions to manipulate prototypes and closures
** See Copyright Notice in lua.h
*/
#ifndef lfunc_h
#define lfunc_h
#include "lobject.h"
#define sizeCclosure(n) (cast_int(offsetof(CClosure, upvalue)) + \
cast_int(sizeof(TValue)) * (n))
#define sizeLclosure(n) (cast_int(offsetof(LClosure, upvals)) + \
cast_int(sizeof(TValue *)) * (n))
/* test whether thread is in 'twups' list */
#define isintwups(L) (L->twups != L)
/*
** maximum number of upvalues in a closure (both C and Lua). (Value
** must fit in a VM register.)
*/
#define MAXUPVAL 255
#define upisopen(up) ((up)->v != &(up)->u.value)
#define uplevel(up) check_exp(upisopen(up), cast(StkId, (up)->v))
/*
** maximum number of misses before giving up the cache of closures
** in prototypes
*/
#define MAXMISS 10
/*
** Special "status" for 'luaF_close'
*/
/* close upvalues without running their closing methods */
#define NOCLOSINGMETH (-1)
/* close upvalues running all closing methods in protected mode */
#define CLOSEPROTECT (-2)
LUAI_FUNC Proto *luaF_newproto (lua_State *L);
LUAI_FUNC CClosure *luaF_newCclosure (lua_State *L, int nupvals);
LUAI_FUNC LClosure *luaF_newLclosure (lua_State *L, int nupvals);
LUAI_FUNC void luaF_initupvals (lua_State *L, LClosure *cl);
LUAI_FUNC UpVal *luaF_findupval (lua_State *L, StkId level);
LUAI_FUNC void luaF_newtbcupval (lua_State *L, StkId level);
LUAI_FUNC int luaF_close (lua_State *L, StkId level, int status);
LUAI_FUNC void luaF_unlinkupval (UpVal *uv);
LUAI_FUNC void luaF_freeproto (lua_State *L, Proto *f);
LUAI_FUNC const char *luaF_getlocalname (const Proto *func, int local_number,
int pc);
#endif

1616
lua-5.4.0/src/lgc.c Normal file
View File

File diff suppressed because it is too large Load Diff

103
lua-5.3.3/src/lgc.h → lua-5.4.0/src/lgc.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lgc.h,v 2.91 2015/12/21 13:02:14 roberto Exp $ ** $Id: lgc.h $
** Garbage Collector ** Garbage Collector
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -25,25 +25,18 @@
*/ */
/* how much to allocate before next GC step */
#if !defined(GCSTEPSIZE)
/* ~100 small strings */
#define GCSTEPSIZE (cast_int(100 * sizeof(TString)))
#endif
/* /*
** Possible states of the Garbage Collector ** Possible states of the Garbage Collector
*/ */
#define GCSpropagate 0 #define GCSpropagate 0
#define GCSatomic 1 #define GCSenteratomic 1
#define GCSswpallgc 2 #define GCSatomic 2
#define GCSswpfinobj 3 #define GCSswpallgc 3
#define GCSswptobefnz 4 #define GCSswpfinobj 4
#define GCSswpend 5 #define GCSswptobefnz 5
#define GCScallfin 6 #define GCSswpend 6
#define GCSpause 7 #define GCScallfin 7
#define GCSpause 8
#define issweepphase(g) \ #define issweepphase(g) \
@ -64,7 +57,7 @@
/* /*
** some useful bit tricks ** some useful bit tricks
*/ */
#define resetbits(x,m) ((x) &= cast(lu_byte, ~(m))) #define resetbits(x,m) ((x) &= cast_byte(~(m)))
#define setbits(x,m) ((x) |= (m)) #define setbits(x,m) ((x) |= (m))
#define testbits(x,m) ((x) & (m)) #define testbits(x,m) ((x) & (m))
#define bitmask(b) (1<<(b)) #define bitmask(b) (1<<(b))
@ -74,12 +67,17 @@
#define testbit(x,b) testbits(x, bitmask(b)) #define testbit(x,b) testbits(x, bitmask(b))
/* Layout for bit use in 'marked' field: */ /*
#define WHITE0BIT 0 /* object is white (type 0) */ ** Layout for bit use in 'marked' field. First three bits are
#define WHITE1BIT 1 /* object is white (type 1) */ ** used for object "age" in generational mode. Last bit is free
#define BLACKBIT 2 /* object is black */ ** to be used by respective objects.
#define FINALIZEDBIT 3 /* object has been marked for finalization */ */
/* bit 7 is currently used by tests (luaL_checkmemory) */ #define WHITE0BIT 3 /* object is white (type 0) */
#define WHITE1BIT 4 /* object is white (type 1) */
#define BLACKBIT 5 /* object is black */
#define FINALIZEDBIT 6 /* object has been marked for finalization */
#define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT) #define WHITEBITS bit2mask(WHITE0BIT, WHITE1BIT)
@ -92,15 +90,61 @@
#define tofinalize(x) testbit((x)->marked, FINALIZEDBIT) #define tofinalize(x) testbit((x)->marked, FINALIZEDBIT)
#define otherwhite(g) ((g)->currentwhite ^ WHITEBITS) #define otherwhite(g) ((g)->currentwhite ^ WHITEBITS)
#define isdeadm(ow,m) (!(((m) ^ WHITEBITS) & (ow))) #define isdeadm(ow,m) ((m) & (ow))
#define isdead(g,v) isdeadm(otherwhite(g), (v)->marked) #define isdead(g,v) isdeadm(otherwhite(g), (v)->marked)
#define changewhite(x) ((x)->marked ^= WHITEBITS) #define changewhite(x) ((x)->marked ^= WHITEBITS)
#define gray2black(x) l_setbit((x)->marked, BLACKBIT) #define gray2black(x) l_setbit((x)->marked, BLACKBIT)
#define luaC_white(g) cast(lu_byte, (g)->currentwhite & WHITEBITS) #define luaC_white(g) cast_byte((g)->currentwhite & WHITEBITS)
/* object age in generational mode */
#define G_NEW 0 /* created in current cycle */
#define G_SURVIVAL 1 /* created in previous cycle */
#define G_OLD0 2 /* marked old by frw. barrier in this cycle */
#define G_OLD1 3 /* first full cycle as old */
#define G_OLD 4 /* really old object (not to be visited) */
#define G_TOUCHED1 5 /* old object touched this cycle */
#define G_TOUCHED2 6 /* old object touched in previous cycle */
#define AGEBITS 7 /* all age bits (111) */
#define getage(o) ((o)->marked & AGEBITS)
#define setage(o,a) ((o)->marked = cast_byte(((o)->marked & (~AGEBITS)) | a))
#define isold(o) (getage(o) > G_SURVIVAL)
#define changeage(o,f,t) \
check_exp(getage(o) == (f), (o)->marked ^= ((f)^(t)))
/* Default Values for GC parameters */
#define LUAI_GENMAJORMUL 100
#define LUAI_GENMINORMUL 20
/* wait memory to double before starting new cycle */
#define LUAI_GCPAUSE 200
/*
** some gc parameters are stored divided by 4 to allow a maximum value
** up to 1023 in a 'lu_byte'.
*/
#define getgcparam(p) ((p) * 4)
#define setgcparam(p,v) ((p) = (v) / 4)
#define LUAI_GCMUL 100
/* how much to allocate before next GC step (log2) */
#define LUAI_GCSTEPSIZE 13 /* 8 KB */
/*
** Check whether the declared GC mode is generational. While in
** generational mode, the collector can go temporarily to incremental
** mode to improve performance. This is signaled by 'g->lastatomic != 0'.
*/
#define isdecGCmodegen(g) (g->gckind == KGC_GEN || g->lastatomic != 0)
/* /*
** Does one step of collection when debt becomes positive. 'pre'/'pos' ** Does one step of collection when debt becomes positive. 'pre'/'pos'
** allows some adjustments to be done only when needed. macro ** allows some adjustments to be done only when needed. macro
@ -127,10 +171,6 @@
(isblack(p) && iswhite(o)) ? \ (isblack(p) && iswhite(o)) ? \
luaC_barrier_(L,obj2gco(p),obj2gco(o)) : cast_void(0)) luaC_barrier_(L,obj2gco(p),obj2gco(o)) : cast_void(0))
#define luaC_upvalbarrier(L,uv) ( \
(iscollectable((uv)->v) && !upisopen(uv)) ? \
luaC_upvalbarrier_(L,uv) : cast_void(0))
LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o); LUAI_FUNC void luaC_fix (lua_State *L, GCObject *o);
LUAI_FUNC void luaC_freeallobjects (lua_State *L); LUAI_FUNC void luaC_freeallobjects (lua_State *L);
LUAI_FUNC void luaC_step (lua_State *L); LUAI_FUNC void luaC_step (lua_State *L);
@ -138,10 +178,9 @@ LUAI_FUNC void luaC_runtilstate (lua_State *L, int statesmask);
LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency); LUAI_FUNC void luaC_fullgc (lua_State *L, int isemergency);
LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz); LUAI_FUNC GCObject *luaC_newobj (lua_State *L, int tt, size_t sz);
LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v); LUAI_FUNC void luaC_barrier_ (lua_State *L, GCObject *o, GCObject *v);
LUAI_FUNC void luaC_barrierback_ (lua_State *L, Table *o); LUAI_FUNC void luaC_barrierback_ (lua_State *L, GCObject *o);
LUAI_FUNC void luaC_upvalbarrier_ (lua_State *L, UpVal *uv);
LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt); LUAI_FUNC void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt);
LUAI_FUNC void luaC_upvdeccount (lua_State *L, UpVal *uv); LUAI_FUNC void luaC_changemode (lua_State *L, int newmode);
#endif #endif

11
lua-5.3.3/src/linit.c → lua-5.4.0/src/linit.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: linit.c,v 1.38 2015/01/05 13:48:33 roberto Exp $ ** $Id: linit.c $
** Initialization of libraries for lua.c and other clients ** Initialization of libraries for lua.c and other clients
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -18,10 +18,10 @@
** open the library, which is already linked to the application. ** open the library, which is already linked to the application.
** For that, do the following code: ** For that, do the following code:
** **
** luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD"); ** luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
** lua_pushcfunction(L, luaopen_modname); ** lua_pushcfunction(L, luaopen_modname);
** lua_setfield(L, -2, modname); ** lua_setfield(L, -2, modname);
** lua_pop(L, 1); // remove _PRELOAD table ** lua_pop(L, 1); // remove PRELOAD table
*/ */
#include "lprefix.h" #include "lprefix.h"
@ -40,7 +40,7 @@
** program ** program
*/ */
static const luaL_Reg loadedlibs[] = { static const luaL_Reg loadedlibs[] = {
{"_G", luaopen_base}, {LUA_GNAME, luaopen_base},
{LUA_LOADLIBNAME, luaopen_package}, {LUA_LOADLIBNAME, luaopen_package},
{LUA_COLIBNAME, luaopen_coroutine}, {LUA_COLIBNAME, luaopen_coroutine},
{LUA_TABLIBNAME, luaopen_table}, {LUA_TABLIBNAME, luaopen_table},
@ -50,9 +50,6 @@ static const luaL_Reg loadedlibs[] = {
{LUA_MATHLIBNAME, luaopen_math}, {LUA_MATHLIBNAME, luaopen_math},
{LUA_UTF8LIBNAME, luaopen_utf8}, {LUA_UTF8LIBNAME, luaopen_utf8},
{LUA_DBLIBNAME, luaopen_debug}, {LUA_DBLIBNAME, luaopen_debug},
#if defined(LUA_COMPAT_BITLIB)
{LUA_BITLIBNAME, luaopen_bit32},
#endif
{NULL, NULL} {NULL, NULL}
}; };

136
lua-5.3.3/src/liolib.c → lua-5.4.0/src/liolib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: liolib.c,v 2.149 2016/05/02 14:03:19 roberto Exp $ ** $Id: liolib.c $
** Standard I/O (and system) library ** Standard I/O (and system) library
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -37,10 +37,11 @@
#endif #endif
/* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */ /* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */
#define l_checkmode(mode) \ static int l_checkmode (const char *mode) {
(*mode != '\0' && strchr("rwa", *(mode++)) != NULL && \ return (*mode != '\0' && strchr("rwa", *(mode++)) != NULL &&
(*mode != '+' || (++mode, 1)) && /* skip if char is '+' */ \ (*mode != '+' || ((void)(++mode), 1)) && /* skip if char is '+' */
(strspn(mode, L_MODEEXT) == strlen(mode))) (strspn(mode, L_MODEEXT) == strlen(mode))); /* check extensions */
}
#endif #endif
@ -67,7 +68,7 @@
/* ISO C definitions */ /* ISO C definitions */
#define l_popen(L,c,m) \ #define l_popen(L,c,m) \
((void)((void)c, m), \ ((void)c, (void)m, \
luaL_error(L, "'popen' not supported"), \ luaL_error(L, "'popen' not supported"), \
(FILE*)0) (FILE*)0)
#define l_pclose(L,file) ((void)L, (void)file, -1) #define l_pclose(L,file) ((void)L, (void)file, -1)
@ -132,6 +133,7 @@
/* }====================================================== */ /* }====================================================== */
#define IO_PREFIX "_IO_" #define IO_PREFIX "_IO_"
#define IOPREF_LEN (sizeof(IO_PREFIX)/sizeof(char) - 1) #define IOPREF_LEN (sizeof(IO_PREFIX)/sizeof(char) - 1)
#define IO_INPUT (IO_PREFIX "input") #define IO_INPUT (IO_PREFIX "input")
@ -151,7 +153,7 @@ static int io_type (lua_State *L) {
luaL_checkany(L, 1); luaL_checkany(L, 1);
p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE); p = (LStream *)luaL_testudata(L, 1, LUA_FILEHANDLE);
if (p == NULL) if (p == NULL)
lua_pushnil(L); /* not a file */ luaL_pushfail(L); /* not a file */
else if (isclosed(p)) else if (isclosed(p))
lua_pushliteral(L, "closed file"); lua_pushliteral(L, "closed file");
else else
@ -185,7 +187,7 @@ static FILE *tofile (lua_State *L) {
** handle is in a consistent state. ** handle is in a consistent state.
*/ */
static LStream *newprefile (lua_State *L) { static LStream *newprefile (lua_State *L) {
LStream *p = (LStream *)lua_newuserdata(L, sizeof(LStream)); LStream *p = (LStream *)lua_newuserdatauv(L, sizeof(LStream), 0);
p->closef = NULL; /* mark file handle as 'closed' */ p->closef = NULL; /* mark file handle as 'closed' */
luaL_setmetatable(L, LUA_FILEHANDLE); luaL_setmetatable(L, LUA_FILEHANDLE);
return p; return p;
@ -205,14 +207,19 @@ static int aux_close (lua_State *L) {
} }
static int io_close (lua_State *L) { static int f_close (lua_State *L) {
if (lua_isnone(L, 1)) /* no argument? */
lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT); /* use standard output */
tofile(L); /* make sure argument is an open stream */ tofile(L); /* make sure argument is an open stream */
return aux_close(L); return aux_close(L);
} }
static int io_close (lua_State *L) {
if (lua_isnone(L, 1)) /* no argument? */
lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT); /* use default output */
return f_close(L);
}
static int f_gc (lua_State *L) { static int f_gc (lua_State *L) {
LStream *p = tolstream(L); LStream *p = tolstream(L);
if (!isclosed(p) && p->f != NULL) if (!isclosed(p) && p->f != NULL)
@ -263,6 +270,7 @@ static int io_open (lua_State *L) {
*/ */
static int io_pclose (lua_State *L) { static int io_pclose (lua_State *L) {
LStream *p = tolstream(L); LStream *p = tolstream(L);
errno = 0;
return luaL_execresult(L, l_pclose(L, p->f)); return luaL_execresult(L, l_pclose(L, p->f));
} }
@ -289,7 +297,7 @@ static FILE *getiofile (lua_State *L, const char *findex) {
lua_getfield(L, LUA_REGISTRYINDEX, findex); lua_getfield(L, LUA_REGISTRYINDEX, findex);
p = (LStream *)lua_touserdata(L, -1); p = (LStream *)lua_touserdata(L, -1);
if (isclosed(p)) if (isclosed(p))
luaL_error(L, "standard %s file is closed", findex + IOPREF_LEN); luaL_error(L, "default %s file is closed", findex + IOPREF_LEN);
return p->f; return p->f;
} }
@ -330,12 +338,22 @@ static int io_readline (lua_State *L);
*/ */
#define MAXARGLINE 250 #define MAXARGLINE 250
/*
** Auxiliary function to create the iteration function for 'lines'.
** The iteration function is a closure over 'io_readline', with
** the following upvalues:
** 1) The file being read (first value in the stack)
** 2) the number of arguments to read
** 3) a boolean, true iff file has to be closed when finished ('toclose')
** *) a variable number of format arguments (rest of the stack)
*/
static void aux_lines (lua_State *L, int toclose) { static void aux_lines (lua_State *L, int toclose) {
int n = lua_gettop(L) - 1; /* number of arguments to read */ int n = lua_gettop(L) - 1; /* number of arguments to read */
luaL_argcheck(L, n <= MAXARGLINE, MAXARGLINE + 2, "too many arguments"); luaL_argcheck(L, n <= MAXARGLINE, MAXARGLINE + 2, "too many arguments");
lua_pushvalue(L, 1); /* file */
lua_pushinteger(L, n); /* number of arguments to read */ lua_pushinteger(L, n); /* number of arguments to read */
lua_pushboolean(L, toclose); /* close/not close file when finished */ lua_pushboolean(L, toclose); /* close/not close file when finished */
lua_rotate(L, 2, 2); /* move 'n' and 'toclose' to their positions */ lua_rotate(L, 2, 3); /* move the three values to their positions */
lua_pushcclosure(L, io_readline, 3 + n); lua_pushcclosure(L, io_readline, 3 + n);
} }
@ -347,6 +365,11 @@ static int f_lines (lua_State *L) {
} }
/*
** Return an iteration function for 'io.lines'. If file has to be
** closed, also returns the file itself as a second result (to be
** closed as the state at the exit of a generic for).
*/
static int io_lines (lua_State *L) { static int io_lines (lua_State *L) {
int toclose; int toclose;
if (lua_isnone(L, 1)) lua_pushnil(L); /* at least one argument */ if (lua_isnone(L, 1)) lua_pushnil(L); /* at least one argument */
@ -362,8 +385,15 @@ static int io_lines (lua_State *L) {
lua_replace(L, 1); /* put file at index 1 */ lua_replace(L, 1); /* put file at index 1 */
toclose = 1; /* close it after iteration */ toclose = 1; /* close it after iteration */
} }
aux_lines(L, toclose); aux_lines(L, toclose); /* push iteration function */
return 1; if (toclose) {
lua_pushnil(L); /* state */
lua_pushnil(L); /* control */
lua_pushvalue(L, 1); /* file is the to-be-closed variable (4th result) */
return 4;
}
else
return 1;
} }
@ -429,7 +459,7 @@ static int readdigits (RN *rn, int hex) {
/* /*
** Read a number: first reads a valid prefix of a numeral into a buffer. ** Read a number: first reads a valid prefix of a numeral into a buffer.
** Then it calls 'lua_stringtonumber' to check whether the format is ** Then it calls 'lua_stringtonumber' to check whether the format is
** correct and to convert it to a Lua number ** correct and to convert it to a Lua number.
*/ */
static int read_number (lua_State *L, FILE *f) { static int read_number (lua_State *L, FILE *f) {
RN rn; RN rn;
@ -441,7 +471,7 @@ static int read_number (lua_State *L, FILE *f) {
decp[1] = '.'; /* always accept a dot */ decp[1] = '.'; /* always accept a dot */
l_lockfile(rn.f); l_lockfile(rn.f);
do { rn.c = l_getc(rn.f); } while (isspace(rn.c)); /* skip spaces */ do { rn.c = l_getc(rn.f); } while (isspace(rn.c)); /* skip spaces */
test2(&rn, "-+"); /* optional signal */ test2(&rn, "-+"); /* optional sign */
if (test2(&rn, "00")) { if (test2(&rn, "00")) {
if (test2(&rn, "xX")) hex = 1; /* numeral is hexadecimal */ if (test2(&rn, "xX")) hex = 1; /* numeral is hexadecimal */
else count = 1; /* count initial '0' as a valid digit */ else count = 1; /* count initial '0' as a valid digit */
@ -450,7 +480,7 @@ static int read_number (lua_State *L, FILE *f) {
if (test2(&rn, decp)) /* decimal point? */ if (test2(&rn, decp)) /* decimal point? */
count += readdigits(&rn, hex); /* fractional part */ count += readdigits(&rn, hex); /* fractional part */
if (count > 0 && test2(&rn, (hex ? "pP" : "eE"))) { /* exponent mark? */ if (count > 0 && test2(&rn, (hex ? "pP" : "eE"))) { /* exponent mark? */
test2(&rn, "-+"); /* exponent signal */ test2(&rn, "-+"); /* exponent sign */
readdigits(&rn, 0); /* exponent digits */ readdigits(&rn, 0); /* exponent digits */
} }
ungetc(rn.c, rn.f); /* unread look-ahead char */ ungetc(rn.c, rn.f); /* unread look-ahead char */
@ -475,17 +505,17 @@ static int test_eof (lua_State *L, FILE *f) {
static int read_line (lua_State *L, FILE *f, int chop) { static int read_line (lua_State *L, FILE *f, int chop) {
luaL_Buffer b; luaL_Buffer b;
int c = '\0'; int c;
luaL_buffinit(L, &b); luaL_buffinit(L, &b);
while (c != EOF && c != '\n') { /* repeat until end of line */ do { /* may need to read several chunks to get whole line */
char *buff = luaL_prepbuffer(&b); /* preallocate buffer */ char *buff = luaL_prepbuffer(&b); /* preallocate buffer space */
int i = 0; int i = 0;
l_lockfile(f); /* no memory errors can happen inside the lock */ l_lockfile(f); /* no memory errors can happen inside the lock */
while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n') while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n')
buff[i++] = c; buff[i++] = c; /* read up to end of line or buffer limit */
l_unlockfile(f); l_unlockfile(f);
luaL_addsize(&b, i); luaL_addsize(&b, i);
} } while (c != EOF && c != '\n'); /* repeat until end of line */
if (!chop && c == '\n') /* want a newline and have one? */ if (!chop && c == '\n') /* want a newline and have one? */
luaL_addchar(&b, c); /* add ending newline to result */ luaL_addchar(&b, c); /* add ending newline to result */
luaL_pushresult(&b); /* close buffer */ luaL_pushresult(&b); /* close buffer */
@ -522,14 +552,14 @@ static int read_chars (lua_State *L, FILE *f, size_t n) {
static int g_read (lua_State *L, FILE *f, int first) { static int g_read (lua_State *L, FILE *f, int first) {
int nargs = lua_gettop(L) - 1; int nargs = lua_gettop(L) - 1;
int success; int n, success;
int n;
clearerr(f); clearerr(f);
if (nargs == 0) { /* no arguments? */ if (nargs == 0) { /* no arguments? */
success = read_line(L, f, 1); success = read_line(L, f, 1);
n = first+1; /* to return 1 result */ n = first + 1; /* to return 1 result */
} }
else { /* ensure stack space for all results and for auxlib's buffer */ else {
/* ensure stack space for all results and for auxlib's buffer */
luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments"); luaL_checkstack(L, nargs+LUA_MINSTACK, "too many arguments");
success = 1; success = 1;
for (n = first; nargs-- && success; n++) { for (n = first; nargs-- && success; n++) {
@ -564,7 +594,7 @@ static int g_read (lua_State *L, FILE *f, int first) {
return luaL_fileresult(L, 0, NULL); return luaL_fileresult(L, 0, NULL);
if (!success) { if (!success) {
lua_pop(L, 1); /* remove last result */ lua_pop(L, 1); /* remove last result */
lua_pushnil(L); /* push nil instead */ luaL_pushfail(L); /* push nil instead */
} }
return n - first; return n - first;
} }
@ -580,6 +610,9 @@ static int f_read (lua_State *L) {
} }
/*
** Iteration function for 'lines'.
*/
static int io_readline (lua_State *L) { static int io_readline (lua_State *L) {
LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1)); LStream *p = (LStream *)lua_touserdata(L, lua_upvalueindex(1));
int i; int i;
@ -594,14 +627,14 @@ static int io_readline (lua_State *L) {
lua_assert(n > 0); /* should return at least a nil */ lua_assert(n > 0); /* should return at least a nil */
if (lua_toboolean(L, -n)) /* read at least one value? */ if (lua_toboolean(L, -n)) /* read at least one value? */
return n; /* return them */ return n; /* return them */
else { /* first result is nil: EOF or error */ else { /* first result is false: EOF or error */
if (n > 1) { /* is there error information? */ if (n > 1) { /* is there error information? */
/* 2nd result is error message */ /* 2nd result is error message */
return luaL_error(L, "%s", lua_tostring(L, -n + 1)); return luaL_error(L, "%s", lua_tostring(L, -n + 1));
} }
if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */ if (lua_toboolean(L, lua_upvalueindex(3))) { /* generator created file? */
lua_settop(L, 0); lua_settop(L, 0); /* clear stack */
lua_pushvalue(L, lua_upvalueindex(1)); lua_pushvalue(L, lua_upvalueindex(1)); /* push file at index 1 */
aux_close(L); /* close it */ aux_close(L); /* close it */
} }
return 0; return 0;
@ -618,8 +651,10 @@ static int g_write (lua_State *L, FILE *f, int arg) {
if (lua_type(L, arg) == LUA_TNUMBER) { if (lua_type(L, arg) == LUA_TNUMBER) {
/* optimization: could be done exactly as for strings */ /* optimization: could be done exactly as for strings */
int len = lua_isinteger(L, arg) int len = lua_isinteger(L, arg)
? fprintf(f, LUA_INTEGER_FMT, lua_tointeger(L, arg)) ? fprintf(f, LUA_INTEGER_FMT,
: fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg)); (LUAI_UACINT)lua_tointeger(L, arg))
: fprintf(f, LUA_NUMBER_FMT,
(LUAI_UACNUMBER)lua_tonumber(L, arg));
status = status && (len > 0); status = status && (len > 0);
} }
else { else {
@ -708,26 +743,37 @@ static const luaL_Reg iolib[] = {
/* /*
** methods for file handles ** methods for file handles
*/ */
static const luaL_Reg flib[] = { static const luaL_Reg meth[] = {
{"close", io_close},
{"flush", f_flush},
{"lines", f_lines},
{"read", f_read}, {"read", f_read},
{"seek", f_seek},
{"setvbuf", f_setvbuf},
{"write", f_write}, {"write", f_write},
{"lines", f_lines},
{"flush", f_flush},
{"seek", f_seek},
{"close", f_close},
{"setvbuf", f_setvbuf},
{NULL, NULL}
};
/*
** metamethods for file handles
*/
static const luaL_Reg metameth[] = {
{"__index", NULL}, /* place holder */
{"__gc", f_gc}, {"__gc", f_gc},
{"__close", f_gc},
{"__tostring", f_tostring}, {"__tostring", f_tostring},
{NULL, NULL} {NULL, NULL}
}; };
static void createmeta (lua_State *L) { static void createmeta (lua_State *L) {
luaL_newmetatable(L, LUA_FILEHANDLE); /* create metatable for file handles */ luaL_newmetatable(L, LUA_FILEHANDLE); /* metatable for file handles */
lua_pushvalue(L, -1); /* push metatable */ luaL_setfuncs(L, metameth, 0); /* add metamethods to new metatable */
lua_setfield(L, -2, "__index"); /* metatable.__index = metatable */ luaL_newlibtable(L, meth); /* create method table */
luaL_setfuncs(L, flib, 0); /* add file methods to new metatable */ luaL_setfuncs(L, meth, 0); /* add file methods to method table */
lua_pop(L, 1); /* pop new metatable */ lua_setfield(L, -2, "__index"); /* metatable.__index = method table */
lua_pop(L, 1); /* pop metatable */
} }
@ -737,7 +783,7 @@ static void createmeta (lua_State *L) {
static int io_noclose (lua_State *L) { static int io_noclose (lua_State *L) {
LStream *p = tolstream(L); LStream *p = tolstream(L);
p->closef = &io_noclose; /* keep file opened */ p->closef = &io_noclose; /* keep file opened */
lua_pushnil(L); luaL_pushfail(L);
lua_pushliteral(L, "cannot close standard file"); lua_pushliteral(L, "cannot close standard file");
return 2; return 2;
} }

112
lua-5.4.0/src/ljumptab.h Normal file
View File

@ -0,0 +1,112 @@
/*
** $Id: ljumptab.h $
** Jump Table for the Lua interpreter
** See Copyright Notice in lua.h
*/
#undef vmdispatch
#undef vmcase
#undef vmbreak
#define vmdispatch(x) goto *disptab[x];
#define vmcase(l) L_##l:
#define vmbreak vmfetch(); vmdispatch(GET_OPCODE(i));
static const void *const disptab[NUM_OPCODES] = {
#if 0
** you can update the following list with this command:
**
** sed -n '/^OP_/\!d; s/OP_/\&\&L_OP_/ ; s/,.*/,/ ; s/\/.*// ; p' lopcodes.h
**
#endif
&&L_OP_MOVE,
&&L_OP_LOADI,
&&L_OP_LOADF,
&&L_OP_LOADK,
&&L_OP_LOADKX,
&&L_OP_LOADFALSE,
&&L_OP_LFALSESKIP,
&&L_OP_LOADTRUE,
&&L_OP_LOADNIL,
&&L_OP_GETUPVAL,
&&L_OP_SETUPVAL,
&&L_OP_GETTABUP,
&&L_OP_GETTABLE,
&&L_OP_GETI,
&&L_OP_GETFIELD,
&&L_OP_SETTABUP,
&&L_OP_SETTABLE,
&&L_OP_SETI,
&&L_OP_SETFIELD,
&&L_OP_NEWTABLE,
&&L_OP_SELF,
&&L_OP_ADDI,
&&L_OP_ADDK,
&&L_OP_SUBK,
&&L_OP_MULK,
&&L_OP_MODK,
&&L_OP_POWK,
&&L_OP_DIVK,
&&L_OP_IDIVK,
&&L_OP_BANDK,
&&L_OP_BORK,
&&L_OP_BXORK,
&&L_OP_SHRI,
&&L_OP_SHLI,
&&L_OP_ADD,
&&L_OP_SUB,
&&L_OP_MUL,
&&L_OP_MOD,
&&L_OP_POW,
&&L_OP_DIV,
&&L_OP_IDIV,
&&L_OP_BAND,
&&L_OP_BOR,
&&L_OP_BXOR,
&&L_OP_SHL,
&&L_OP_SHR,
&&L_OP_MMBIN,
&&L_OP_MMBINI,
&&L_OP_MMBINK,
&&L_OP_UNM,
&&L_OP_BNOT,
&&L_OP_NOT,
&&L_OP_LEN,
&&L_OP_CONCAT,
&&L_OP_CLOSE,
&&L_OP_TBC,
&&L_OP_JMP,
&&L_OP_EQ,
&&L_OP_LT,
&&L_OP_LE,
&&L_OP_EQK,
&&L_OP_EQI,
&&L_OP_LTI,
&&L_OP_LEI,
&&L_OP_GTI,
&&L_OP_GEI,
&&L_OP_TEST,
&&L_OP_TESTSET,
&&L_OP_CALL,
&&L_OP_TAILCALL,
&&L_OP_RETURN,
&&L_OP_RETURN0,
&&L_OP_RETURN1,
&&L_OP_FORLOOP,
&&L_OP_FORPREP,
&&L_OP_TFORPREP,
&&L_OP_TFORCALL,
&&L_OP_TFORLOOP,
&&L_OP_SETLIST,
&&L_OP_CLOSURE,
&&L_OP_VARARG,
&&L_OP_VARARGPREP,
&&L_OP_EXTRAARG
};

75
lua-5.3.3/src/llex.c → lua-5.4.0/src/llex.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: llex.c,v 2.96 2016/05/02 14:02:12 roberto Exp $ ** $Id: llex.c $
** Lexical Analyzer ** Lexical Analyzer
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -29,7 +29,7 @@
#define next(ls) (ls->current = zgetc(ls->z)) #define next(ls) (ls->current = zgetc(ls->z))
@ -63,7 +63,7 @@ static void save (LexState *ls, int c) {
newsize = luaZ_sizebuffer(b) * 2; newsize = luaZ_sizebuffer(b) * 2;
luaZ_resizebuffer(ls->L, b, newsize); luaZ_resizebuffer(ls->L, b, newsize);
} }
b->buffer[luaZ_bufflen(b)++] = cast(char, c); b->buffer[luaZ_bufflen(b)++] = cast_char(c);
} }
@ -82,7 +82,10 @@ void luaX_init (lua_State *L) {
const char *luaX_token2str (LexState *ls, int token) { const char *luaX_token2str (LexState *ls, int token) {
if (token < FIRST_RESERVED) { /* single-byte symbols? */ if (token < FIRST_RESERVED) { /* single-byte symbols? */
lua_assert(token == cast_uchar(token)); lua_assert(token == cast_uchar(token));
return luaO_pushfstring(ls->L, "'%c'", token); if (lisprint(token))
return luaO_pushfstring(ls->L, "'%c'", token);
else /* control character */
return luaO_pushfstring(ls->L, "'<\\%d>'", token);
} }
else { else {
const char *s = luaX_tokens[token - FIRST_RESERVED]; const char *s = luaX_tokens[token - FIRST_RESERVED];
@ -129,15 +132,15 @@ TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
TValue *o; /* entry for 'str' */ TValue *o; /* entry for 'str' */
TString *ts = luaS_newlstr(L, str, l); /* create new string */ TString *ts = luaS_newlstr(L, str, l); /* create new string */
setsvalue2s(L, L->top++, ts); /* temporarily anchor it in stack */ setsvalue2s(L, L->top++, ts); /* temporarily anchor it in stack */
o = luaH_set(L, ls->h, L->top - 1); o = luaH_set(L, ls->h, s2v(L->top - 1));
if (ttisnil(o)) { /* not in use yet? */ if (isempty(o)) { /* not in use yet? */
/* boolean value does not need GC barrier; /* boolean value does not need GC barrier;
table has no metatable, so it does not need to invalidate cache */ table is not a metatable, so it does not need to invalidate cache */
setbvalue(o, 1); /* t[string] = true */ setbtvalue(o); /* t[string] = true */
luaC_checkGC(L); luaC_checkGC(L);
} }
else { /* string already present */ else { /* string already present */
ts = tsvalue(keyfromval(o)); /* re-use value previously stored */ ts = keystrval(nodefromval(o)); /* re-use value previously stored */
} }
L->top--; /* remove string from stack */ L->top--; /* remove string from stack */
return ts; return ts;
@ -208,8 +211,16 @@ static int check_next2 (LexState *ls, const char *set) {
/* LUA_NUMBER */ /* LUA_NUMBER */
/* /*
** this function is quite liberal in what it accepts, as 'luaO_str2num' ** This function is quite liberal in what it accepts, as 'luaO_str2num'
** will reject ill-formed numerals. ** will reject ill-formed numerals. Roughly, it accepts the following
** pattern:
**
** %d(%x|%.|([Ee][+-]?))* | 0[Xx](%x|%.|([Pp][+-]?))*
**
** The only tricky part is to accept [+-] only after a valid exponent
** mark, to avoid reading '3-4' or '0xe+1' as a single number.
**
** The caller might have already read an initial dot.
*/ */
static int read_numeral (LexState *ls, SemInfo *seminfo) { static int read_numeral (LexState *ls, SemInfo *seminfo) {
TValue obj; TValue obj;
@ -220,14 +231,14 @@ static int read_numeral (LexState *ls, SemInfo *seminfo) {
if (first == '0' && check_next2(ls, "xX")) /* hexadecimal? */ if (first == '0' && check_next2(ls, "xX")) /* hexadecimal? */
expo = "Pp"; expo = "Pp";
for (;;) { for (;;) {
if (check_next2(ls, expo)) /* exponent part? */ if (check_next2(ls, expo)) /* exponent mark? */
check_next2(ls, "-+"); /* optional exponent sign */ check_next2(ls, "-+"); /* optional exponent sign */
if (lisxdigit(ls->current)) else if (lisxdigit(ls->current) || ls->current == '.') /* '%x|%.' */
save_and_next(ls);
else if (ls->current == '.')
save_and_next(ls); save_and_next(ls);
else break; else break;
} }
if (lislalpha(ls->current)) /* is numeral touching a letter? */
save_and_next(ls); /* force an error */
save(ls, '\0'); save(ls, '\0');
if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0) /* format error? */ if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0) /* format error? */
lexerror(ls, "malformed number", TK_FLT); lexerror(ls, "malformed number", TK_FLT);
@ -244,12 +255,12 @@ static int read_numeral (LexState *ls, SemInfo *seminfo) {
/* /*
** skip a sequence '[=*[' or ']=*]'; if sequence is well formed, return ** reads a sequence '[=*[' or ']=*]', leaving the last bracket.
** its number of '='s; otherwise, return a negative number (-1 iff there ** If sequence is well formed, return its number of '='s + 2; otherwise,
** are no '='s after initial bracket) ** return 1 if there is no '='s or 0 otherwise (an unfinished '[==...').
*/ */
static int skip_sep (LexState *ls) { static size_t skip_sep (LexState *ls) {
int count = 0; size_t count = 0;
int s = ls->current; int s = ls->current;
lua_assert(s == '[' || s == ']'); lua_assert(s == '[' || s == ']');
save_and_next(ls); save_and_next(ls);
@ -257,11 +268,13 @@ static int skip_sep (LexState *ls) {
save_and_next(ls); save_and_next(ls);
count++; count++;
} }
return (ls->current == s) ? count : (-count) - 1; return (ls->current == s) ? count + 2
: (count == 0) ? 1
: 0;
} }
static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) { static void read_long_string (LexState *ls, SemInfo *seminfo, size_t sep) {
int line = ls->linenumber; /* initial line (for error message) */ int line = ls->linenumber; /* initial line (for error message) */
save_and_next(ls); /* skip 2nd '[' */ save_and_next(ls); /* skip 2nd '[' */
if (currIsNewline(ls)) /* string starts with a newline? */ if (currIsNewline(ls)) /* string starts with a newline? */
@ -295,8 +308,8 @@ static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
} }
} endloop: } endloop:
if (seminfo) if (seminfo)
seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + (2 + sep), seminfo->ts = luaX_newstring(ls, luaZ_buffer(ls->buff) + sep,
luaZ_bufflen(ls->buff) - 2*(2 + sep)); luaZ_bufflen(ls->buff) - 2 * sep);
} }
@ -330,10 +343,10 @@ static unsigned long readutf8esc (LexState *ls) {
save_and_next(ls); /* skip 'u' */ save_and_next(ls); /* skip 'u' */
esccheck(ls, ls->current == '{', "missing '{'"); esccheck(ls, ls->current == '{', "missing '{'");
r = gethexa(ls); /* must have at least one digit */ r = gethexa(ls); /* must have at least one digit */
while ((save_and_next(ls), lisxdigit(ls->current))) { while (cast_void(save_and_next(ls)), lisxdigit(ls->current)) {
i++; i++;
esccheck(ls, r <= (0x7FFFFFFFu >> 4), "UTF-8 value too large");
r = (r << 4) + luaO_hexavalue(ls->current); r = (r << 4) + luaO_hexavalue(ls->current);
esccheck(ls, r <= 0x10FFFF, "UTF-8 value too large");
} }
esccheck(ls, ls->current == '}', "missing '}'"); esccheck(ls, ls->current == '}', "missing '}'");
next(ls); /* skip '}' */ next(ls); /* skip '}' */
@ -444,9 +457,9 @@ static int llex (LexState *ls, SemInfo *seminfo) {
/* else is a comment */ /* else is a comment */
next(ls); next(ls);
if (ls->current == '[') { /* long comment? */ if (ls->current == '[') { /* long comment? */
int sep = skip_sep(ls); size_t sep = skip_sep(ls);
luaZ_resetbuffer(ls->buff); /* 'skip_sep' may dirty the buffer */ luaZ_resetbuffer(ls->buff); /* 'skip_sep' may dirty the buffer */
if (sep >= 0) { if (sep >= 2) {
read_long_string(ls, NULL, sep); /* skip long comment */ read_long_string(ls, NULL, sep); /* skip long comment */
luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */ luaZ_resetbuffer(ls->buff); /* previous call may dirty the buff. */
break; break;
@ -458,12 +471,12 @@ static int llex (LexState *ls, SemInfo *seminfo) {
break; break;
} }
case '[': { /* long string or simply '[' */ case '[': { /* long string or simply '[' */
int sep = skip_sep(ls); size_t sep = skip_sep(ls);
if (sep >= 0) { if (sep >= 2) {
read_long_string(ls, seminfo, sep); read_long_string(ls, seminfo, sep);
return TK_STRING; return TK_STRING;
} }
else if (sep != -1) /* '[=...' missing second bracket */ else if (sep == 0) /* '[=...' missing second bracket? */
lexerror(ls, "invalid long string delimiter", TK_STRING); lexerror(ls, "invalid long string delimiter", TK_STRING);
return '['; return '[';
} }

4
lua-5.3.3/src/llex.h → lua-5.4.0/src/llex.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: llex.h,v 1.79 2016/05/02 14:02:12 roberto Exp $ ** $Id: llex.h $
** Lexical Analyzer ** Lexical Analyzer
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -37,7 +37,7 @@ enum RESERVED {
}; };
/* number of reserved words */ /* number of reserved words */
#define NUM_RESERVED (cast(int, TK_WHILE-FIRST_RESERVED+1)) #define NUM_RESERVED (cast_int(TK_WHILE-FIRST_RESERVED + 1))
typedef union { typedef union {

108
lua-5.3.3/src/llimits.h → lua-5.4.0/src/llimits.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: llimits.h,v 1.141 2015/11/19 19:16:22 roberto Exp $ ** $Id: llimits.h $
** Limits, basic types, and some other 'installation-dependent' definitions ** Limits, basic types, and some other 'installation-dependent' definitions
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -14,6 +14,7 @@
#include "lua.h" #include "lua.h"
/* /*
** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count ** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count
** the total memory used by Lua (in bytes). Usually, 'size_t' and ** the total memory used by Lua (in bytes). Usually, 'size_t' and
@ -22,7 +23,7 @@
#if defined(LUAI_MEM) /* { external definitions? */ #if defined(LUAI_MEM) /* { external definitions? */
typedef LUAI_UMEM lu_mem; typedef LUAI_UMEM lu_mem;
typedef LUAI_MEM l_mem; typedef LUAI_MEM l_mem;
#elif LUAI_BITSINT >= 32 /* }{ */ #elif LUAI_IS32INT /* }{ */
typedef size_t lu_mem; typedef size_t lu_mem;
typedef ptrdiff_t l_mem; typedef ptrdiff_t l_mem;
#else /* 16-bit ints */ /* }{ */ #else /* 16-bit ints */ /* }{ */
@ -33,12 +34,13 @@ typedef long l_mem;
/* chars used as small naturals (so that 'char' is reserved for characters) */ /* chars used as small naturals (so that 'char' is reserved for characters) */
typedef unsigned char lu_byte; typedef unsigned char lu_byte;
typedef signed char ls_byte;
/* maximum value for size_t */ /* maximum value for size_t */
#define MAX_SIZET ((size_t)(~(size_t)0)) #define MAX_SIZET ((size_t)(~(size_t)0))
/* maximum size visible for Lua (must be representable in a lua_Integer */ /* maximum size visible for Lua (must be representable in a lua_Integer) */
#define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \ #define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \
: (size_t)(LUA_MAXINTEGER)) : (size_t)(LUA_MAXINTEGER))
@ -51,6 +53,23 @@ typedef unsigned char lu_byte;
#define MAX_INT INT_MAX /* maximum value of an int */ #define MAX_INT INT_MAX /* maximum value of an int */
/*
** floor of the log2 of the maximum signed value for integral type 't'.
** (That is, maximum 'n' such that '2^n' fits in the given signed type.)
*/
#define log2maxs(t) (sizeof(t) * 8 - 2)
/*
** test whether an unsigned value is a power of 2 (or zero)
*/
#define ispow2(x) (((x) & ((x) - 1)) == 0)
/* number of chars of a literal string without the ending \0 */
#define LL(x) (sizeof(x)/sizeof(char) - 1)
/* /*
** conversion of pointer to unsigned integer: ** conversion of pointer to unsigned integer:
** this is for hashing only; there is no problem if the integer ** this is for hashing only; there is no problem if the integer
@ -60,21 +79,6 @@ typedef unsigned char lu_byte;
/* type to ensure maximum alignment */
#if defined(LUAI_USER_ALIGNMENT_T)
typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
#else
typedef union {
lua_Number n;
double u;
void *s;
lua_Integer i;
long l;
} L_Umaxalign;
#endif
/* types of 'usual argument conversions' for lua_Number and lua_Integer */ /* types of 'usual argument conversions' for lua_Number and lua_Integer */
typedef LUAI_UACNUMBER l_uacNumber; typedef LUAI_UACNUMBER l_uacNumber;
typedef LUAI_UACINT l_uacInt; typedef LUAI_UACINT l_uacInt;
@ -95,7 +99,7 @@ typedef LUAI_UACINT l_uacInt;
** assertion for checking API calls ** assertion for checking API calls
*/ */
#if !defined(luai_apicheck) #if !defined(luai_apicheck)
#define luai_apicheck(l,e) lua_assert(e) #define luai_apicheck(l,e) ((void)l, lua_assert(e))
#endif #endif
#define api_check(l,e,msg) luai_apicheck(l,(e) && msg) #define api_check(l,e,msg) luai_apicheck(l,(e) && msg)
@ -111,10 +115,15 @@ typedef LUAI_UACINT l_uacInt;
#define cast(t, exp) ((t)(exp)) #define cast(t, exp) ((t)(exp))
#define cast_void(i) cast(void, (i)) #define cast_void(i) cast(void, (i))
#define cast_byte(i) cast(lu_byte, (i)) #define cast_voidp(i) cast(void *, (i))
#define cast_num(i) cast(lua_Number, (i)) #define cast_num(i) cast(lua_Number, (i))
#define cast_int(i) cast(int, (i)) #define cast_int(i) cast(int, (i))
#define cast_uint(i) cast(unsigned int, (i))
#define cast_byte(i) cast(lu_byte, (i))
#define cast_uchar(i) cast(unsigned char, (i)) #define cast_uchar(i) cast(unsigned char, (i))
#define cast_char(i) cast(char, (i))
#define cast_charp(i) cast(char *, (i))
#define cast_sizet(i) cast(size_t, (i))
/* cast a signed lua_Integer to lua_Unsigned */ /* cast a signed lua_Integer to lua_Unsigned */
@ -132,9 +141,27 @@ typedef LUAI_UACINT l_uacInt;
#endif #endif
/*
** macros to improve jump prediction (used mainly for error handling)
*/
#if !defined(likely)
#if defined(__GNUC__)
#define likely(x) (__builtin_expect(((x) != 0), 1))
#define unlikely(x) (__builtin_expect(((x) != 0), 0))
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif
#endif
/* /*
** non-return type ** non-return type
*/ */
#if !defined(l_noret)
#if defined(__GNUC__) #if defined(__GNUC__)
#define l_noret void __attribute__((noreturn)) #define l_noret void __attribute__((noreturn))
#elif defined(_MSC_VER) && _MSC_VER >= 1200 #elif defined(_MSC_VER) && _MSC_VER >= 1200
@ -143,28 +170,21 @@ typedef LUAI_UACINT l_uacInt;
#define l_noret void #define l_noret void
#endif #endif
/*
** maximum depth for nested C calls and syntactical nested non-terminals
** in a program. (Value must fit in an unsigned short int.)
*/
#if !defined(LUAI_MAXCCALLS)
#define LUAI_MAXCCALLS 200
#endif #endif
/* /*
** type for virtual-machine instructions; ** type for virtual-machine instructions;
** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h) ** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
*/ */
#if LUAI_BITSINT >= 32 #if LUAI_IS32INT
typedef unsigned int Instruction; typedef unsigned int l_uint32;
#else #else
typedef unsigned long Instruction; typedef unsigned long l_uint32;
#endif #endif
typedef l_uint32 Instruction;
/* /*
@ -225,8 +245,7 @@ typedef unsigned long Instruction;
/* /*
** these macros allow user-specific actions on threads when you defined ** these macros allow user-specific actions when a thread is
** LUAI_EXTRASPACE and need to do something extra when a thread is
** created/deleted/resumed/yielded. ** created/deleted/resumed/yielded.
*/ */
#if !defined(luai_userstateopen) #if !defined(luai_userstateopen)
@ -270,15 +289,20 @@ typedef unsigned long Instruction;
#endif #endif
/* /*
** modulo: defined as 'a - floor(a/b)*b'; this definition gives NaN when ** modulo: defined as 'a - floor(a/b)*b'; the direct computation
** 'b' is huge, but the result should be 'a'. 'fmod' gives the result of ** using this definition has several problems with rounding errors,
** 'a - trunc(a/b)*b', and therefore must be corrected when 'trunc(a/b) ** so it is better to use 'fmod'. 'fmod' gives the result of
** ~= floor(a/b)'. That happens when the division has a non-integer ** 'a - trunc(a/b)*b', and therefore must be corrected when
** negative result, which is equivalent to the test below. ** 'trunc(a/b) ~= floor(a/b)'. That happens when the division has a
** non-integer negative result: non-integer result is equivalent to
** a non-zero remainder 'm'; negative result is equivalent to 'a' and
** 'b' with different signs, or 'm' and 'b' with different signs
** (as the result 'm' of 'fmod' has the same sign of 'a').
*/ */
#if !defined(luai_nummod) #if !defined(luai_nummod)
#define luai_nummod(L,a,b,m) \ #define luai_nummod(L,a,b,m) \
{ (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); } { (void)L; (m) = l_mathop(fmod)(a,b); \
if (((m) > 0) ? (b) < 0 : ((m) < 0 && (b) > 0)) (m) += (b); }
#endif #endif
/* exponentiation */ /* exponentiation */
@ -295,6 +319,8 @@ typedef unsigned long Instruction;
#define luai_numeq(a,b) ((a)==(b)) #define luai_numeq(a,b) ((a)==(b))
#define luai_numlt(a,b) ((a)<(b)) #define luai_numlt(a,b) ((a)<(b))
#define luai_numle(a,b) ((a)<=(b)) #define luai_numle(a,b) ((a)<=(b))
#define luai_numgt(a,b) ((a)>(b))
#define luai_numge(a,b) ((a)>=(b))
#define luai_numisnan(a) (!luai_numeq((a), (a))) #define luai_numisnan(a) (!luai_numeq((a), (a)))
#endif #endif
@ -310,7 +336,7 @@ typedef unsigned long Instruction;
#else #else
/* realloc stack keeping its size */ /* realloc stack keeping its size */
#define condmovestack(L,pre,pos) \ #define condmovestack(L,pre,pos) \
{ int sz_ = (L)->stacksize; pre; luaD_reallocstack((L), sz_); pos; } { int sz_ = (L)->stacksize; pre; luaD_reallocstack((L), sz_, 0); pos; }
#endif #endif
#if !defined(HARDMEMTESTS) #if !defined(HARDMEMTESTS)

763
lua-5.4.0/src/lmathlib.c Normal file
View File

@ -0,0 +1,763 @@
/*
** $Id: lmathlib.c $
** Standard mathematical library
** See Copyright Notice in lua.h
*/
#define lmathlib_c
#define LUA_LIB
#include "lprefix.h"
#include <float.h>
#include <limits.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#undef PI
#define PI (l_mathop(3.141592653589793238462643383279502884))
static int math_abs (lua_State *L) {
if (lua_isinteger(L, 1)) {
lua_Integer n = lua_tointeger(L, 1);
if (n < 0) n = (lua_Integer)(0u - (lua_Unsigned)n);
lua_pushinteger(L, n);
}
else
lua_pushnumber(L, l_mathop(fabs)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sin (lua_State *L) {
lua_pushnumber(L, l_mathop(sin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_cos (lua_State *L) {
lua_pushnumber(L, l_mathop(cos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tan (lua_State *L) {
lua_pushnumber(L, l_mathop(tan)(luaL_checknumber(L, 1)));
return 1;
}
static int math_asin (lua_State *L) {
lua_pushnumber(L, l_mathop(asin)(luaL_checknumber(L, 1)));
return 1;
}
static int math_acos (lua_State *L) {
lua_pushnumber(L, l_mathop(acos)(luaL_checknumber(L, 1)));
return 1;
}
static int math_atan (lua_State *L) {
lua_Number y = luaL_checknumber(L, 1);
lua_Number x = luaL_optnumber(L, 2, 1);
lua_pushnumber(L, l_mathop(atan2)(y, x));
return 1;
}
static int math_toint (lua_State *L) {
int valid;
lua_Integer n = lua_tointegerx(L, 1, &valid);
if (valid)
lua_pushinteger(L, n);
else {
luaL_checkany(L, 1);
luaL_pushfail(L); /* value is not convertible to integer */
}
return 1;
}
static void pushnumint (lua_State *L, lua_Number d) {
lua_Integer n;
if (lua_numbertointeger(d, &n)) /* does 'd' fit in an integer? */
lua_pushinteger(L, n); /* result is integer */
else
lua_pushnumber(L, d); /* result is float */
}
static int math_floor (lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own floor */
else {
lua_Number d = l_mathop(floor)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_ceil (lua_State *L) {
if (lua_isinteger(L, 1))
lua_settop(L, 1); /* integer is its own ceil */
else {
lua_Number d = l_mathop(ceil)(luaL_checknumber(L, 1));
pushnumint(L, d);
}
return 1;
}
static int math_fmod (lua_State *L) {
if (lua_isinteger(L, 1) && lua_isinteger(L, 2)) {
lua_Integer d = lua_tointeger(L, 2);
if ((lua_Unsigned)d + 1u <= 1u) { /* special cases: -1 or 0 */
luaL_argcheck(L, d != 0, 2, "zero");
lua_pushinteger(L, 0); /* avoid overflow with 0x80000... / -1 */
}
else
lua_pushinteger(L, lua_tointeger(L, 1) % d);
}
else
lua_pushnumber(L, l_mathop(fmod)(luaL_checknumber(L, 1),
luaL_checknumber(L, 2)));
return 1;
}
/*
** next function does not use 'modf', avoiding problems with 'double*'
** (which is not compatible with 'float*') when lua_Number is not
** 'double'.
*/
static int math_modf (lua_State *L) {
if (lua_isinteger(L ,1)) {
lua_settop(L, 1); /* number is its own integer part */
lua_pushnumber(L, 0); /* no fractional part */
}
else {
lua_Number n = luaL_checknumber(L, 1);
/* integer part (rounds toward zero) */
lua_Number ip = (n < 0) ? l_mathop(ceil)(n) : l_mathop(floor)(n);
pushnumint(L, ip);
/* fractional part (test needed for inf/-inf) */
lua_pushnumber(L, (n == ip) ? l_mathop(0.0) : (n - ip));
}
return 2;
}
static int math_sqrt (lua_State *L) {
lua_pushnumber(L, l_mathop(sqrt)(luaL_checknumber(L, 1)));
return 1;
}
static int math_ult (lua_State *L) {
lua_Integer a = luaL_checkinteger(L, 1);
lua_Integer b = luaL_checkinteger(L, 2);
lua_pushboolean(L, (lua_Unsigned)a < (lua_Unsigned)b);
return 1;
}
static int math_log (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number res;
if (lua_isnoneornil(L, 2))
res = l_mathop(log)(x);
else {
lua_Number base = luaL_checknumber(L, 2);
#if !defined(LUA_USE_C89)
if (base == l_mathop(2.0))
res = l_mathop(log2)(x); else
#endif
if (base == l_mathop(10.0))
res = l_mathop(log10)(x);
else
res = l_mathop(log)(x)/l_mathop(log)(base);
}
lua_pushnumber(L, res);
return 1;
}
static int math_exp (lua_State *L) {
lua_pushnumber(L, l_mathop(exp)(luaL_checknumber(L, 1)));
return 1;
}
static int math_deg (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (l_mathop(180.0) / PI));
return 1;
}
static int math_rad (lua_State *L) {
lua_pushnumber(L, luaL_checknumber(L, 1) * (PI / l_mathop(180.0)));
return 1;
}
static int math_min (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imin = 1; /* index of current minimum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, i, imin, LUA_OPLT))
imin = i;
}
lua_pushvalue(L, imin);
return 1;
}
static int math_max (lua_State *L) {
int n = lua_gettop(L); /* number of arguments */
int imax = 1; /* index of current maximum value */
int i;
luaL_argcheck(L, n >= 1, 1, "value expected");
for (i = 2; i <= n; i++) {
if (lua_compare(L, imax, i, LUA_OPLT))
imax = i;
}
lua_pushvalue(L, imax);
return 1;
}
static int math_type (lua_State *L) {
if (lua_type(L, 1) == LUA_TNUMBER)
lua_pushstring(L, (lua_isinteger(L, 1)) ? "integer" : "float");
else {
luaL_checkany(L, 1);
luaL_pushfail(L);
}
return 1;
}
/*
** {==================================================================
** Pseudo-Random Number Generator based on 'xoshiro256**'.
** ===================================================================
*/
/* number of binary digits in the mantissa of a float */
#define FIGS l_floatatt(MANT_DIG)
#if FIGS > 64
/* there are only 64 random bits; use them all */
#undef FIGS
#define FIGS 64
#endif
/*
** LUA_RAND32 forces the use of 32-bit integers in the implementation
** of the PRN generator (mainly for testing).
*/
#if !defined(LUA_RAND32) && !defined(Rand64)
/* try to find an integer type with at least 64 bits */
#if (ULONG_MAX >> 31 >> 31) >= 3
/* 'long' has at least 64 bits */
#define Rand64 unsigned long
#elif !defined(LUA_USE_C89) && defined(LLONG_MAX)
/* there is a 'long long' type (which must have at least 64 bits) */
#define Rand64 unsigned long long
#elif (LUA_MAXUNSIGNED >> 31 >> 31) >= 3
/* 'lua_Integer' has at least 64 bits */
#define Rand64 lua_Unsigned
#endif
#endif
#if defined(Rand64) /* { */
/*
** Standard implementation, using 64-bit integers.
** If 'Rand64' has more than 64 bits, the extra bits do not interfere
** with the 64 initial bits, except in a right shift. Moreover, the
** final result has to discard the extra bits.
*/
/* avoid using extra bits when needed */
#define trim64(x) ((x) & 0xffffffffffffffffu)
/* rotate left 'x' by 'n' bits */
static Rand64 rotl (Rand64 x, int n) {
return (x << n) | (trim64(x) >> (64 - n));
}
static Rand64 nextrand (Rand64 *state) {
Rand64 state0 = state[0];
Rand64 state1 = state[1];
Rand64 state2 = state[2] ^ state0;
Rand64 state3 = state[3] ^ state1;
Rand64 res = rotl(state1 * 5, 7) * 9;
state[0] = state0 ^ state3;
state[1] = state1 ^ state2;
state[2] = state2 ^ (state1 << 17);
state[3] = rotl(state3, 45);
return res;
}
/* must take care to not shift stuff by more than 63 slots */
/*
** Convert bits from a random integer into a float in the
** interval [0,1), getting the higher FIG bits from the
** random unsigned integer and converting that to a float.
*/
/* must throw out the extra (64 - FIGS) bits */
#define shift64_FIG (64 - FIGS)
/* to scale to [0, 1), multiply by scaleFIG = 2^(-FIGS) */
#define scaleFIG (l_mathop(0.5) / ((Rand64)1 << (FIGS - 1)))
static lua_Number I2d (Rand64 x) {
return (lua_Number)(trim64(x) >> shift64_FIG) * scaleFIG;
}
/* convert a 'Rand64' to a 'lua_Unsigned' */
#define I2UInt(x) ((lua_Unsigned)trim64(x))
/* convert a 'lua_Unsigned' to a 'Rand64' */
#define Int2I(x) ((Rand64)(x))
#else /* no 'Rand64' }{ */
/* get an integer with at least 32 bits */
#if LUAI_IS32INT
typedef unsigned int lu_int32;
#else
typedef unsigned long lu_int32;
#endif
/*
** Use two 32-bit integers to represent a 64-bit quantity.
*/
typedef struct Rand64 {
lu_int32 h; /* higher half */
lu_int32 l; /* lower half */
} Rand64;
/*
** If 'lu_int32' has more than 32 bits, the extra bits do not interfere
** with the 32 initial bits, except in a right shift and comparisons.
** Moreover, the final result has to discard the extra bits.
*/
/* avoid using extra bits when needed */
#define trim32(x) ((x) & 0xffffffffu)
/*
** basic operations on 'Rand64' values
*/
/* build a new Rand64 value */
static Rand64 packI (lu_int32 h, lu_int32 l) {
Rand64 result;
result.h = h;
result.l = l;
return result;
}
/* return i << n */
static Rand64 Ishl (Rand64 i, int n) {
lua_assert(n > 0 && n < 32);
return packI((i.h << n) | (trim32(i.l) >> (32 - n)), i.l << n);
}
/* i1 ^= i2 */
static void Ixor (Rand64 *i1, Rand64 i2) {
i1->h ^= i2.h;
i1->l ^= i2.l;
}
/* return i1 + i2 */
static Rand64 Iadd (Rand64 i1, Rand64 i2) {
Rand64 result = packI(i1.h + i2.h, i1.l + i2.l);
if (trim32(result.l) < trim32(i1.l)) /* carry? */
result.h++;
return result;
}
/* return i * 5 */
static Rand64 times5 (Rand64 i) {
return Iadd(Ishl(i, 2), i); /* i * 5 == (i << 2) + i */
}
/* return i * 9 */
static Rand64 times9 (Rand64 i) {
return Iadd(Ishl(i, 3), i); /* i * 9 == (i << 3) + i */
}
/* return 'i' rotated left 'n' bits */
static Rand64 rotl (Rand64 i, int n) {
lua_assert(n > 0 && n < 32);
return packI((i.h << n) | (trim32(i.l) >> (32 - n)),
(trim32(i.h) >> (32 - n)) | (i.l << n));
}
/* for offsets larger than 32, rotate right by 64 - offset */
static Rand64 rotl1 (Rand64 i, int n) {
lua_assert(n > 32 && n < 64);
n = 64 - n;
return packI((trim32(i.h) >> n) | (i.l << (32 - n)),
(i.h << (32 - n)) | (trim32(i.l) >> n));
}
/*
** implementation of 'xoshiro256**' algorithm on 'Rand64' values
*/
static Rand64 nextrand (Rand64 *state) {
Rand64 res = times9(rotl(times5(state[1]), 7));
Rand64 t = Ishl(state[1], 17);
Ixor(&state[2], state[0]);
Ixor(&state[3], state[1]);
Ixor(&state[1], state[2]);
Ixor(&state[0], state[3]);
Ixor(&state[2], t);
state[3] = rotl1(state[3], 45);
return res;
}
/*
** Converts a 'Rand64' into a float.
*/
/* an unsigned 1 with proper type */
#define UONE ((lu_int32)1)
#if FIGS <= 32
/* 2^(-FIGS) */
#define scaleFIG (l_mathop(0.5) / (UONE << (FIGS - 1)))
/*
** get up to 32 bits from higher half, shifting right to
** throw out the extra bits.
*/
static lua_Number I2d (Rand64 x) {
lua_Number h = (lua_Number)(trim32(x.h) >> (32 - FIGS));
return h * scaleFIG;
}
#else /* 32 < FIGS <= 64 */
/* must take care to not shift stuff by more than 31 slots */
/* 2^(-FIGS) = 1.0 / 2^30 / 2^3 / 2^(FIGS-33) */
#define scaleFIG \
((lua_Number)1.0 / (UONE << 30) / 8.0 / (UONE << (FIGS - 33)))
/*
** use FIGS - 32 bits from lower half, throwing out the other
** (32 - (FIGS - 32)) = (64 - FIGS) bits
*/
#define shiftLOW (64 - FIGS)
/*
** higher 32 bits go after those (FIGS - 32) bits: shiftHI = 2^(FIGS - 32)
*/
#define shiftHI ((lua_Number)(UONE << (FIGS - 33)) * 2.0)
static lua_Number I2d (Rand64 x) {
lua_Number h = (lua_Number)trim32(x.h) * shiftHI;
lua_Number l = (lua_Number)(trim32(x.l) >> shiftLOW);
return (h + l) * scaleFIG;
}
#endif
/* convert a 'Rand64' to a 'lua_Unsigned' */
static lua_Unsigned I2UInt (Rand64 x) {
return ((lua_Unsigned)trim32(x.h) << 31 << 1) | (lua_Unsigned)trim32(x.l);
}
/* convert a 'lua_Unsigned' to a 'Rand64' */
static Rand64 Int2I (lua_Unsigned n) {
return packI((lu_int32)(n >> 31 >> 1), (lu_int32)n);
}
#endif /* } */
/*
** A state uses four 'Rand64' values.
*/
typedef struct {
Rand64 s[4];
} RanState;
/*
** Project the random integer 'ran' into the interval [0, n].
** Because 'ran' has 2^B possible values, the projection can only be
** uniform when the size of the interval is a power of 2 (exact
** division). Otherwise, to get a uniform projection into [0, n], we
** first compute 'lim', the smallest Mersenne number not smaller than
** 'n'. We then project 'ran' into the interval [0, lim]. If the result
** is inside [0, n], we are done. Otherwise, we try with another 'ran',
** until we have a result inside the interval.
*/
static lua_Unsigned project (lua_Unsigned ran, lua_Unsigned n,
RanState *state) {
if ((n & (n + 1)) == 0) /* is 'n + 1' a power of 2? */
return ran & n; /* no bias */
else {
lua_Unsigned lim = n;
/* compute the smallest (2^b - 1) not smaller than 'n' */
lim |= (lim >> 1);
lim |= (lim >> 2);
lim |= (lim >> 4);
lim |= (lim >> 8);
lim |= (lim >> 16);
#if (LUA_MAXUNSIGNED >> 31) >= 3
lim |= (lim >> 32); /* integer type has more than 32 bits */
#endif
lua_assert((lim & (lim + 1)) == 0 /* 'lim + 1' is a power of 2, */
&& lim >= n /* not smaller than 'n', */
&& (lim >> 1) < n); /* and it is the smallest one */
while ((ran &= lim) > n) /* project 'ran' into [0..lim] */
ran = I2UInt(nextrand(state->s)); /* not inside [0..n]? try again */
return ran;
}
}
static int math_random (lua_State *L) {
lua_Integer low, up;
lua_Unsigned p;
RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
Rand64 rv = nextrand(state->s); /* next pseudo-random value */
switch (lua_gettop(L)) { /* check number of arguments */
case 0: { /* no arguments */
lua_pushnumber(L, I2d(rv)); /* float between 0 and 1 */
return 1;
}
case 1: { /* only upper limit */
low = 1;
up = luaL_checkinteger(L, 1);
if (up == 0) { /* single 0 as argument? */
lua_pushinteger(L, I2UInt(rv)); /* full random integer */
return 1;
}
break;
}
case 2: { /* lower and upper limits */
low = luaL_checkinteger(L, 1);
up = luaL_checkinteger(L, 2);
break;
}
default: return luaL_error(L, "wrong number of arguments");
}
/* random integer in the interval [low, up] */
luaL_argcheck(L, low <= up, 1, "interval is empty");
/* project random integer into the interval [0, up - low] */
p = project(I2UInt(rv), (lua_Unsigned)up - (lua_Unsigned)low, state);
lua_pushinteger(L, p + (lua_Unsigned)low);
return 1;
}
static void setseed (lua_State *L, Rand64 *state,
lua_Unsigned n1, lua_Unsigned n2) {
int i;
state[0] = Int2I(n1);
state[1] = Int2I(0xff); /* avoid a zero state */
state[2] = Int2I(n2);
state[3] = Int2I(0);
for (i = 0; i < 16; i++)
nextrand(state); /* discard initial values to "spread" seed */
lua_pushinteger(L, n1);
lua_pushinteger(L, n2);
}
/*
** Set a "random" seed. To get some randomness, use the current time
** and the address of 'L' (in case the machine does address space layout
** randomization).
*/
static void randseed (lua_State *L, RanState *state) {
lua_Unsigned seed1 = (lua_Unsigned)time(NULL);
lua_Unsigned seed2 = (lua_Unsigned)(size_t)L;
setseed(L, state->s, seed1, seed2);
}
static int math_randomseed (lua_State *L) {
RanState *state = (RanState *)lua_touserdata(L, lua_upvalueindex(1));
if (lua_isnone(L, 1)) {
randseed(L, state);
}
else {
lua_Integer n1 = luaL_checkinteger(L, 1);
lua_Integer n2 = luaL_optinteger(L, 2, 0);
setseed(L, state->s, n1, n2);
}
return 2; /* return seeds */
}
static const luaL_Reg randfuncs[] = {
{"random", math_random},
{"randomseed", math_randomseed},
{NULL, NULL}
};
/*
** Register the random functions and initialize their state.
*/
static void setrandfunc (lua_State *L) {
RanState *state = (RanState *)lua_newuserdatauv(L, sizeof(RanState), 0);
randseed(L, state); /* initialize with a "random" seed */
lua_pop(L, 2); /* remove pushed seeds */
luaL_setfuncs(L, randfuncs, 1);
}
/* }================================================================== */
/*
** {==================================================================
** Deprecated functions (for compatibility only)
** ===================================================================
*/
#if defined(LUA_COMPAT_MATHLIB)
static int math_cosh (lua_State *L) {
lua_pushnumber(L, l_mathop(cosh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_sinh (lua_State *L) {
lua_pushnumber(L, l_mathop(sinh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_tanh (lua_State *L) {
lua_pushnumber(L, l_mathop(tanh)(luaL_checknumber(L, 1)));
return 1;
}
static int math_pow (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
lua_Number y = luaL_checknumber(L, 2);
lua_pushnumber(L, l_mathop(pow)(x, y));
return 1;
}
static int math_frexp (lua_State *L) {
int e;
lua_pushnumber(L, l_mathop(frexp)(luaL_checknumber(L, 1), &e));
lua_pushinteger(L, e);
return 2;
}
static int math_ldexp (lua_State *L) {
lua_Number x = luaL_checknumber(L, 1);
int ep = (int)luaL_checkinteger(L, 2);
lua_pushnumber(L, l_mathop(ldexp)(x, ep));
return 1;
}
static int math_log10 (lua_State *L) {
lua_pushnumber(L, l_mathop(log10)(luaL_checknumber(L, 1)));
return 1;
}
#endif
/* }================================================================== */
static const luaL_Reg mathlib[] = {
{"abs", math_abs},
{"acos", math_acos},
{"asin", math_asin},
{"atan", math_atan},
{"ceil", math_ceil},
{"cos", math_cos},
{"deg", math_deg},
{"exp", math_exp},
{"tointeger", math_toint},
{"floor", math_floor},
{"fmod", math_fmod},
{"ult", math_ult},
{"log", math_log},
{"max", math_max},
{"min", math_min},
{"modf", math_modf},
{"rad", math_rad},
{"sin", math_sin},
{"sqrt", math_sqrt},
{"tan", math_tan},
{"type", math_type},
#if defined(LUA_COMPAT_MATHLIB)
{"atan2", math_atan},
{"cosh", math_cosh},
{"sinh", math_sinh},
{"tanh", math_tanh},
{"pow", math_pow},
{"frexp", math_frexp},
{"ldexp", math_ldexp},
{"log10", math_log10},
#endif
/* placeholders */
{"random", NULL},
{"randomseed", NULL},
{"pi", NULL},
{"huge", NULL},
{"maxinteger", NULL},
{"mininteger", NULL},
{NULL, NULL}
};
/*
** Open math library
*/
LUAMOD_API int luaopen_math (lua_State *L) {
luaL_newlib(L, mathlib);
lua_pushnumber(L, PI);
lua_setfield(L, -2, "pi");
lua_pushnumber(L, (lua_Number)HUGE_VAL);
lua_setfield(L, -2, "huge");
lua_pushinteger(L, LUA_MAXINTEGER);
lua_setfield(L, -2, "maxinteger");
lua_pushinteger(L, LUA_MININTEGER);
lua_setfield(L, -2, "mininteger");
setrandfunc(L);
return 1;
}

202
lua-5.4.0/src/lmem.c Normal file
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@ -0,0 +1,202 @@
/*
** $Id: lmem.c $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#define lmem_c
#define LUA_CORE
#include "lprefix.h"
#include <stddef.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#if defined(HARDMEMTESTS)
/*
** First allocation will fail whenever not building initial state
** and not shrinking a block. (This fail will trigger 'tryagain' and
** a full GC cycle at every allocation.)
*/
static void *firsttry (global_State *g, void *block, size_t os, size_t ns) {
if (ttisnil(&g->nilvalue) && ns > os)
return NULL; /* fail */
else /* normal allocation */
return (*g->frealloc)(g->ud, block, os, ns);
}
#else
#define firsttry(g,block,os,ns) ((*g->frealloc)(g->ud, block, os, ns))
#endif
/*
** About the realloc function:
** void *frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
** ('osize' is the old size, 'nsize' is the new size)
**
** - frealloc(ud, p, x, 0) frees the block 'p' and returns NULL.
** Particularly, frealloc(ud, NULL, 0, 0) does nothing,
** which is equivalent to free(NULL) in ISO C.
**
** - frealloc(ud, NULL, x, s) creates a new block of size 's'
** (no matter 'x'). Returns NULL if it cannot create the new block.
**
** - otherwise, frealloc(ud, b, x, y) reallocates the block 'b' from
** size 'x' to size 'y'. Returns NULL if it cannot reallocate the
** block to the new size.
*/
/*
** {==================================================================
** Functions to allocate/deallocate arrays for the Parser
** ===================================================================
*/
/*
** Minimum size for arrays during parsing, to avoid overhead of
** reallocating to size 1, then 2, and then 4. All these arrays
** will be reallocated to exact sizes or erased when parsing ends.
*/
#define MINSIZEARRAY 4
void *luaM_growaux_ (lua_State *L, void *block, int nelems, int *psize,
int size_elems, int limit, const char *what) {
void *newblock;
int size = *psize;
if (nelems + 1 <= size) /* does one extra element still fit? */
return block; /* nothing to be done */
if (size >= limit / 2) { /* cannot double it? */
if (unlikely(size >= limit)) /* cannot grow even a little? */
luaG_runerror(L, "too many %s (limit is %d)", what, limit);
size = limit; /* still have at least one free place */
}
else {
size *= 2;
if (size < MINSIZEARRAY)
size = MINSIZEARRAY; /* minimum size */
}
lua_assert(nelems + 1 <= size && size <= limit);
/* 'limit' ensures that multiplication will not overflow */
newblock = luaM_saferealloc_(L, block, cast_sizet(*psize) * size_elems,
cast_sizet(size) * size_elems);
*psize = size; /* update only when everything else is OK */
return newblock;
}
/*
** In prototypes, the size of the array is also its number of
** elements (to save memory). So, if it cannot shrink an array
** to its number of elements, the only option is to raise an
** error.
*/
void *luaM_shrinkvector_ (lua_State *L, void *block, int *size,
int final_n, int size_elem) {
void *newblock;
size_t oldsize = cast_sizet((*size) * size_elem);
size_t newsize = cast_sizet(final_n * size_elem);
lua_assert(newsize <= oldsize);
newblock = luaM_saferealloc_(L, block, oldsize, newsize);
*size = final_n;
return newblock;
}
/* }================================================================== */
l_noret luaM_toobig (lua_State *L) {
luaG_runerror(L, "memory allocation error: block too big");
}
/*
** Free memory
*/
void luaM_free_ (lua_State *L, void *block, size_t osize) {
global_State *g = G(L);
lua_assert((osize == 0) == (block == NULL));
(*g->frealloc)(g->ud, block, osize, 0);
g->GCdebt -= osize;
}
/*
** In case of allocation fail, this function will call the GC to try
** to free some memory and then try the allocation again.
** (It should not be called when shrinking a block, because then the
** interpreter may be in the middle of a collection step.)
*/
static void *tryagain (lua_State *L, void *block,
size_t osize, size_t nsize) {
global_State *g = G(L);
if (ttisnil(&g->nilvalue)) { /* is state fully build? */
luaC_fullgc(L, 1); /* try to free some memory... */
return (*g->frealloc)(g->ud, block, osize, nsize); /* try again */
}
else return NULL; /* cannot free any memory without a full state */
}
/*
** Generic allocation routine.
** If allocation fails while shrinking a block, do not try again; the
** GC shrinks some blocks and it is not reentrant.
*/
void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
void *newblock;
global_State *g = G(L);
lua_assert((osize == 0) == (block == NULL));
newblock = firsttry(g, block, osize, nsize);
if (unlikely(newblock == NULL && nsize > 0)) {
if (nsize > osize) /* not shrinking a block? */
newblock = tryagain(L, block, osize, nsize);
if (newblock == NULL) /* still no memory? */
return NULL; /* do not update 'GCdebt' */
}
lua_assert((nsize == 0) == (newblock == NULL));
g->GCdebt = (g->GCdebt + nsize) - osize;
return newblock;
}
void *luaM_saferealloc_ (lua_State *L, void *block, size_t osize,
size_t nsize) {
void *newblock = luaM_realloc_(L, block, osize, nsize);
if (unlikely(newblock == NULL && nsize > 0)) /* allocation failed? */
luaM_error(L);
return newblock;
}
void *luaM_malloc_ (lua_State *L, size_t size, int tag) {
if (size == 0)
return NULL; /* that's all */
else {
global_State *g = G(L);
void *newblock = firsttry(g, NULL, tag, size);
if (unlikely(newblock == NULL)) {
newblock = tryagain(L, NULL, tag, size);
if (newblock == NULL)
luaM_error(L);
}
g->GCdebt += size;
return newblock;
}
}

93
lua-5.4.0/src/lmem.h Normal file
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@ -0,0 +1,93 @@
/*
** $Id: lmem.h $
** Interface to Memory Manager
** See Copyright Notice in lua.h
*/
#ifndef lmem_h
#define lmem_h
#include <stddef.h>
#include "llimits.h"
#include "lua.h"
#define luaM_error(L) luaD_throw(L, LUA_ERRMEM)
/*
** This macro tests whether it is safe to multiply 'n' by the size of
** type 't' without overflows. Because 'e' is always constant, it avoids
** the runtime division MAX_SIZET/(e).
** (The macro is somewhat complex to avoid warnings: The 'sizeof'
** comparison avoids a runtime comparison when overflow cannot occur.
** The compiler should be able to optimize the real test by itself, but
** when it does it, it may give a warning about "comparison is always
** false due to limited range of data type"; the +1 tricks the compiler,
** avoiding this warning but also this optimization.)
*/
#define luaM_testsize(n,e) \
(sizeof(n) >= sizeof(size_t) && cast_sizet((n)) + 1 > MAX_SIZET/(e))
#define luaM_checksize(L,n,e) \
(luaM_testsize(n,e) ? luaM_toobig(L) : cast_void(0))
/*
** Computes the minimum between 'n' and 'MAX_SIZET/sizeof(t)', so that
** the result is not larger than 'n' and cannot overflow a 'size_t'
** when multiplied by the size of type 't'. (Assumes that 'n' is an
** 'int' or 'unsigned int' and that 'int' is not larger than 'size_t'.)
*/
#define luaM_limitN(n,t) \
((cast_sizet(n) <= MAX_SIZET/sizeof(t)) ? (n) : \
cast_uint((MAX_SIZET/sizeof(t))))
/*
** Arrays of chars do not need any test
*/
#define luaM_reallocvchar(L,b,on,n) \
cast_charp(luaM_saferealloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char)))
#define luaM_freemem(L, b, s) luaM_free_(L, (b), (s))
#define luaM_free(L, b) luaM_free_(L, (b), sizeof(*(b)))
#define luaM_freearray(L, b, n) luaM_free_(L, (b), (n)*sizeof(*(b)))
#define luaM_new(L,t) cast(t*, luaM_malloc_(L, sizeof(t), 0))
#define luaM_newvector(L,n,t) cast(t*, luaM_malloc_(L, (n)*sizeof(t), 0))
#define luaM_newvectorchecked(L,n,t) \
(luaM_checksize(L,n,sizeof(t)), luaM_newvector(L,n,t))
#define luaM_newobject(L,tag,s) luaM_malloc_(L, (s), tag)
#define luaM_growvector(L,v,nelems,size,t,limit,e) \
((v)=cast(t *, luaM_growaux_(L,v,nelems,&(size),sizeof(t), \
luaM_limitN(limit,t),e)))
#define luaM_reallocvector(L, v,oldn,n,t) \
(cast(t *, luaM_realloc_(L, v, cast_sizet(oldn) * sizeof(t), \
cast_sizet(n) * sizeof(t))))
#define luaM_shrinkvector(L,v,size,fs,t) \
((v)=cast(t *, luaM_shrinkvector_(L, v, &(size), fs, sizeof(t))))
LUAI_FUNC l_noret luaM_toobig (lua_State *L);
/* not to be called directly */
LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void *luaM_saferealloc_ (lua_State *L, void *block, size_t oldsize,
size_t size);
LUAI_FUNC void luaM_free_ (lua_State *L, void *block, size_t osize);
LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int nelems,
int *size, int size_elem, int limit,
const char *what);
LUAI_FUNC void *luaM_shrinkvector_ (lua_State *L, void *block, int *nelem,
int final_n, int size_elem);
LUAI_FUNC void *luaM_malloc_ (lua_State *L, size_t size, int tag);
#endif

406
lua-5.3.3/src/loadlib.c → lua-5.4.0/src/loadlib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: loadlib.c,v 1.127 2015/11/23 11:30:45 roberto Exp $ ** $Id: loadlib.c $
** Dynamic library loader for Lua ** Dynamic library loader for Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
** **
@ -25,40 +25,9 @@
/* /*
** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment
** variables that Lua check to set its paths.
*/
#if !defined(LUA_PATH_VAR)
#define LUA_PATH_VAR "LUA_PATH"
#endif
#if !defined(LUA_CPATH_VAR)
#define LUA_CPATH_VAR "LUA_CPATH"
#endif
#define LUA_PATHSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
#define LUA_PATHVARVERSION LUA_PATH_VAR LUA_PATHSUFFIX
#define LUA_CPATHVARVERSION LUA_CPATH_VAR LUA_PATHSUFFIX
/*
** LUA_PATH_SEP is the character that separates templates in a path.
** LUA_PATH_MARK is the string that marks the substitution points in a
** template.
** LUA_EXEC_DIR in a Windows path is replaced by the executable's
** directory.
** LUA_IGMARK is a mark to ignore all before it when building the ** LUA_IGMARK is a mark to ignore all before it when building the
** luaopen_ function name. ** luaopen_ function name.
*/ */
#if !defined (LUA_PATH_SEP)
#define LUA_PATH_SEP ";"
#endif
#if !defined (LUA_PATH_MARK)
#define LUA_PATH_MARK "?"
#endif
#if !defined (LUA_EXEC_DIR)
#define LUA_EXEC_DIR "!"
#endif
#if !defined (LUA_IGMARK) #if !defined (LUA_IGMARK)
#define LUA_IGMARK "-" #define LUA_IGMARK "-"
#endif #endif
@ -87,14 +56,22 @@
/* /*
** unique key for table in the registry that keeps handles ** key for table in the registry that keeps handles
** for all loaded C libraries ** for all loaded C libraries
*/ */
static const int CLIBS = 0; static const char *const CLIBS = "_CLIBS";
#define LIB_FAIL "open" #define LIB_FAIL "open"
#define setprogdir(L) ((void)0)
#define setprogdir(L) ((void)0)
/*
** Special type equivalent to '(void*)' for functions in gcc
** (to suppress warnings when converting function pointers)
*/
typedef void (*voidf)(void);
/* /*
@ -179,7 +156,6 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
#include <windows.h> #include <windows.h>
#undef setprogdir
/* /*
** optional flags for LoadLibraryEx ** optional flags for LoadLibraryEx
@ -189,21 +165,30 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
#endif #endif
#undef setprogdir
/*
** Replace in the path (on the top of the stack) any occurrence
** of LUA_EXEC_DIR with the executable's path.
*/
static void setprogdir (lua_State *L) { static void setprogdir (lua_State *L) {
char buff[MAX_PATH + 1]; char buff[MAX_PATH + 1];
char *lb; char *lb;
DWORD nsize = sizeof(buff)/sizeof(char); DWORD nsize = sizeof(buff)/sizeof(char);
DWORD n = GetModuleFileNameA(NULL, buff, nsize); DWORD n = GetModuleFileNameA(NULL, buff, nsize); /* get exec. name */
if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL) if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL)
luaL_error(L, "unable to get ModuleFileName"); luaL_error(L, "unable to get ModuleFileName");
else { else {
*lb = '\0'; *lb = '\0'; /* cut name on the last '\\' to get the path */
luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff); luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff);
lua_remove(L, -2); /* remove original string */ lua_remove(L, -2); /* remove original string */
} }
} }
static void pusherror (lua_State *L) { static void pusherror (lua_State *L) {
int error = GetLastError(); int error = GetLastError();
char buffer[128]; char buffer[128];
@ -228,7 +213,7 @@ static void *lsys_load (lua_State *L, const char *path, int seeglb) {
static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
lua_CFunction f = (lua_CFunction)GetProcAddress((HMODULE)lib, sym); lua_CFunction f = (lua_CFunction)(voidf)GetProcAddress((HMODULE)lib, sym);
if (f == NULL) pusherror(L); if (f == NULL) pusherror(L);
return f; return f;
} }
@ -272,12 +257,82 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
#endif /* } */ #endif /* } */
/*
** {==================================================================
** Set Paths
** ===================================================================
*/
/*
** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment
** variables that Lua check to set its paths.
*/
#if !defined(LUA_PATH_VAR)
#define LUA_PATH_VAR "LUA_PATH"
#endif
#if !defined(LUA_CPATH_VAR)
#define LUA_CPATH_VAR "LUA_CPATH"
#endif
/*
** return registry.LUA_NOENV as a boolean
*/
static int noenv (lua_State *L) {
int b;
lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
b = lua_toboolean(L, -1);
lua_pop(L, 1); /* remove value */
return b;
}
/*
** Set a path
*/
static void setpath (lua_State *L, const char *fieldname,
const char *envname,
const char *dft) {
const char *dftmark;
const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX);
const char *path = getenv(nver); /* try versioned name */
if (path == NULL) /* no versioned environment variable? */
path = getenv(envname); /* try unversioned name */
if (path == NULL || noenv(L)) /* no environment variable? */
lua_pushstring(L, dft); /* use default */
else if ((dftmark = strstr(path, LUA_PATH_SEP LUA_PATH_SEP)) == NULL)
lua_pushstring(L, path); /* nothing to change */
else { /* path contains a ";;": insert default path in its place */
size_t len = strlen(path);
luaL_Buffer b;
luaL_buffinit(L, &b);
if (path < dftmark) { /* is there a prefix before ';;'? */
luaL_addlstring(&b, path, dftmark - path); /* add it */
luaL_addchar(&b, *LUA_PATH_SEP);
}
luaL_addstring(&b, dft); /* add default */
if (dftmark < path + len - 2) { /* is there a suffix after ';;'? */
luaL_addchar(&b, *LUA_PATH_SEP);
luaL_addlstring(&b, dftmark + 2, (path + len - 2) - dftmark);
}
luaL_pushresult(&b);
}
setprogdir(L);
lua_setfield(L, -3, fieldname); /* package[fieldname] = path value */
lua_pop(L, 1); /* pop versioned variable name ('nver') */
}
/* }================================================================== */
/* /*
** return registry.CLIBS[path] ** return registry.CLIBS[path]
*/ */
static void *checkclib (lua_State *L, const char *path) { static void *checkclib (lua_State *L, const char *path) {
void *plib; void *plib;
lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS); lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_getfield(L, -1, path); lua_getfield(L, -1, path);
plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */ plib = lua_touserdata(L, -1); /* plib = CLIBS[path] */
lua_pop(L, 2); /* pop CLIBS table and 'plib' */ lua_pop(L, 2); /* pop CLIBS table and 'plib' */
@ -290,7 +345,7 @@ static void *checkclib (lua_State *L, const char *path) {
** registry.CLIBS[#CLIBS + 1] = plib -- also keep a list of all libraries ** registry.CLIBS[#CLIBS + 1] = plib -- also keep a list of all libraries
*/ */
static void addtoclib (lua_State *L, const char *path, void *plib) { static void addtoclib (lua_State *L, const char *path, void *plib) {
lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS); lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
lua_pushlightuserdata(L, plib); lua_pushlightuserdata(L, plib);
lua_pushvalue(L, -1); lua_pushvalue(L, -1);
lua_setfield(L, -3, path); /* CLIBS[path] = plib */ lua_setfield(L, -3, path); /* CLIBS[path] = plib */
@ -358,10 +413,10 @@ static int ll_loadlib (lua_State *L) {
if (stat == 0) /* no errors? */ if (stat == 0) /* no errors? */
return 1; /* return the loaded function */ return 1; /* return the loaded function */
else { /* error; error message is on stack top */ else { /* error; error message is on stack top */
lua_pushnil(L); luaL_pushfail(L);
lua_insert(L, -2); lua_insert(L, -2);
lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init"); lua_pushstring(L, (stat == ERRLIB) ? LIB_FAIL : "init");
return 3; /* return nil, error message, and where */ return 3; /* return fail, error message, and where */
} }
} }
@ -382,14 +437,42 @@ static int readable (const char *filename) {
} }
static const char *pushnexttemplate (lua_State *L, const char *path) { /*
const char *l; ** Get the next name in '*path' = 'name1;name2;name3;...', changing
while (*path == *LUA_PATH_SEP) path++; /* skip separators */ ** the ending ';' to '\0' to create a zero-terminated string. Return
if (*path == '\0') return NULL; /* no more templates */ ** NULL when list ends.
l = strchr(path, *LUA_PATH_SEP); /* find next separator */ */
if (l == NULL) l = path + strlen(path); static const char *getnextfilename (char **path, char *end) {
lua_pushlstring(L, path, l - path); /* template */ char *sep;
return l; char *name = *path;
if (name == end)
return NULL; /* no more names */
else if (*name == '\0') { /* from previous iteration? */
*name = *LUA_PATH_SEP; /* restore separator */
name++; /* skip it */
}
sep = strchr(name, *LUA_PATH_SEP); /* find next separator */
if (sep == NULL) /* separator not found? */
sep = end; /* name goes until the end */
*sep = '\0'; /* finish file name */
*path = sep; /* will start next search from here */
return name;
}
/*
** Given a path such as ";blabla.so;blublu.so", pushes the string
**
** no file 'blabla.so'
** no file 'blublu.so'
*/
static void pusherrornotfound (lua_State *L, const char *path) {
luaL_Buffer b;
luaL_buffinit(L, &b);
luaL_addstring(&b, "no file '");
luaL_addgsub(&b, path, LUA_PATH_SEP, "'\n\tno file '");
luaL_addstring(&b, "'");
luaL_pushresult(&b);
} }
@ -397,21 +480,25 @@ static const char *searchpath (lua_State *L, const char *name,
const char *path, const char *path,
const char *sep, const char *sep,
const char *dirsep) { const char *dirsep) {
luaL_Buffer msg; /* to build error message */ luaL_Buffer buff;
luaL_buffinit(L, &msg); char *pathname; /* path with name inserted */
if (*sep != '\0') /* non-empty separator? */ char *endpathname; /* its end */
const char *filename;
/* separator is non-empty and appears in 'name'? */
if (*sep != '\0' && strchr(name, *sep) != NULL)
name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */ name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */
while ((path = pushnexttemplate(L, path)) != NULL) { luaL_buffinit(L, &buff);
const char *filename = luaL_gsub(L, lua_tostring(L, -1), /* add path to the buffer, replacing marks ('?') with the file name */
LUA_PATH_MARK, name); luaL_addgsub(&buff, path, LUA_PATH_MARK, name);
lua_remove(L, -2); /* remove path template */ luaL_addchar(&buff, '\0');
pathname = luaL_buffaddr(&buff); /* writable list of file names */
endpathname = pathname + luaL_bufflen(&buff) - 1;
while ((filename = getnextfilename(&pathname, endpathname)) != NULL) {
if (readable(filename)) /* does file exist and is readable? */ if (readable(filename)) /* does file exist and is readable? */
return filename; /* return that file name */ return lua_pushstring(L, filename); /* save and return name */
lua_pushfstring(L, "\n\tno file '%s'", filename);
lua_remove(L, -2); /* remove file name */
luaL_addvalue(&msg); /* concatenate error msg. entry */
} }
luaL_pushresult(&msg); /* create error message */ luaL_pushresult(&buff); /* push path to create error message */
pusherrornotfound(L, lua_tostring(L, -1)); /* create error message */
return NULL; /* not found */ return NULL; /* not found */
} }
@ -423,9 +510,9 @@ static int ll_searchpath (lua_State *L) {
luaL_optstring(L, 4, LUA_DIRSEP)); luaL_optstring(L, 4, LUA_DIRSEP));
if (f != NULL) return 1; if (f != NULL) return 1;
else { /* error message is on top of the stack */ else { /* error message is on top of the stack */
lua_pushnil(L); luaL_pushfail(L);
lua_insert(L, -2); lua_insert(L, -2);
return 2; /* return nil + error message */ return 2; /* return fail + error message */
} }
} }
@ -509,7 +596,7 @@ static int searcher_Croot (lua_State *L) {
if (stat != ERRFUNC) if (stat != ERRFUNC)
return checkload(L, 0, filename); /* real error */ return checkload(L, 0, filename); /* real error */
else { /* open function not found */ else { /* open function not found */
lua_pushfstring(L, "\n\tno module '%s' in file '%s'", name, filename); lua_pushfstring(L, "no module '%s' in file '%s'", name, filename);
return 1; return 1;
} }
} }
@ -520,24 +607,31 @@ static int searcher_Croot (lua_State *L) {
static int searcher_preload (lua_State *L) { static int searcher_preload (lua_State *L) {
const char *name = luaL_checkstring(L, 1); const char *name = luaL_checkstring(L, 1);
lua_getfield(L, LUA_REGISTRYINDEX, "_PRELOAD"); lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
if (lua_getfield(L, -1, name) == LUA_TNIL) /* not found? */ if (lua_getfield(L, -1, name) == LUA_TNIL) { /* not found? */
lua_pushfstring(L, "\n\tno field package.preload['%s']", name); lua_pushfstring(L, "no field package.preload['%s']", name);
return 1; return 1;
}
else {
lua_pushliteral(L, ":preload:");
return 2;
}
} }
static void findloader (lua_State *L, const char *name) { static void findloader (lua_State *L, const char *name) {
int i; int i;
luaL_Buffer msg; /* to build error message */ luaL_Buffer msg; /* to build error message */
luaL_buffinit(L, &msg);
/* push 'package.searchers' to index 3 in the stack */ /* push 'package.searchers' to index 3 in the stack */
if (lua_getfield(L, lua_upvalueindex(1), "searchers") != LUA_TTABLE) if (lua_getfield(L, lua_upvalueindex(1), "searchers") != LUA_TTABLE)
luaL_error(L, "'package.searchers' must be a table"); luaL_error(L, "'package.searchers' must be a table");
luaL_buffinit(L, &msg);
/* iterate over available searchers to find a loader */ /* iterate over available searchers to find a loader */
for (i = 1; ; i++) { for (i = 1; ; i++) {
luaL_addstring(&msg, "\n\t"); /* error-message prefix */
if (lua_rawgeti(L, 3, i) == LUA_TNIL) { /* no more searchers? */ if (lua_rawgeti(L, 3, i) == LUA_TNIL) { /* no more searchers? */
lua_pop(L, 1); /* remove nil */ lua_pop(L, 1); /* remove nil */
luaL_buffsub(&msg, 2); /* remove prefix */
luaL_pushresult(&msg); /* create error message */ luaL_pushresult(&msg); /* create error message */
luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1)); luaL_error(L, "module '%s' not found:%s", name, lua_tostring(L, -1));
} }
@ -549,164 +643,51 @@ static void findloader (lua_State *L, const char *name) {
lua_pop(L, 1); /* remove extra return */ lua_pop(L, 1); /* remove extra return */
luaL_addvalue(&msg); /* concatenate error message */ luaL_addvalue(&msg); /* concatenate error message */
} }
else else { /* no error message */
lua_pop(L, 2); /* remove both returns */ lua_pop(L, 2); /* remove both returns */
luaL_buffsub(&msg, 2); /* remove prefix */
}
} }
} }
static int ll_require (lua_State *L) { static int ll_require (lua_State *L) {
const char *name = luaL_checkstring(L, 1); const char *name = luaL_checkstring(L, 1);
lua_settop(L, 1); /* _LOADED table will be at index 2 */ lua_settop(L, 1); /* LOADED table will be at index 2 */
lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED"); lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_getfield(L, 2, name); /* _LOADED[name] */ lua_getfield(L, 2, name); /* LOADED[name] */
if (lua_toboolean(L, -1)) /* is it there? */ if (lua_toboolean(L, -1)) /* is it there? */
return 1; /* package is already loaded */ return 1; /* package is already loaded */
/* else must load package */ /* else must load package */
lua_pop(L, 1); /* remove 'getfield' result */ lua_pop(L, 1); /* remove 'getfield' result */
findloader(L, name); findloader(L, name);
lua_pushstring(L, name); /* pass name as argument to module loader */ lua_rotate(L, -2, 1); /* function <-> loader data */
lua_insert(L, -2); /* name is 1st argument (before search data) */ lua_pushvalue(L, 1); /* name is 1st argument to module loader */
lua_pushvalue(L, -3); /* loader data is 2nd argument */
/* stack: ...; loader data; loader function; mod. name; loader data */
lua_call(L, 2, 1); /* run loader to load module */ lua_call(L, 2, 1); /* run loader to load module */
/* stack: ...; loader data; result from loader */
if (!lua_isnil(L, -1)) /* non-nil return? */ if (!lua_isnil(L, -1)) /* non-nil return? */
lua_setfield(L, 2, name); /* _LOADED[name] = returned value */ lua_setfield(L, 2, name); /* LOADED[name] = returned value */
else
lua_pop(L, 1); /* pop nil */
if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no value? */ if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no value? */
lua_pushboolean(L, 1); /* use true as result */ lua_pushboolean(L, 1); /* use true as result */
lua_pushvalue(L, -1); /* extra copy to be returned */ lua_copy(L, -1, -2); /* replace loader result */
lua_setfield(L, 2, name); /* _LOADED[name] = true */ lua_setfield(L, 2, name); /* LOADED[name] = true */
} }
return 1; lua_rotate(L, -2, 1); /* loader data <-> module result */
return 2; /* return module result and loader data */
} }
/* }====================================================== */ /* }====================================================== */
/*
** {======================================================
** 'module' function
** =======================================================
*/
#if defined(LUA_COMPAT_MODULE)
/*
** changes the environment variable of calling function
*/
static void set_env (lua_State *L) {
lua_Debug ar;
if (lua_getstack(L, 1, &ar) == 0 ||
lua_getinfo(L, "f", &ar) == 0 || /* get calling function */
lua_iscfunction(L, -1))
luaL_error(L, "'module' not called from a Lua function");
lua_pushvalue(L, -2); /* copy new environment table to top */
lua_setupvalue(L, -2, 1);
lua_pop(L, 1); /* remove function */
}
static void dooptions (lua_State *L, int n) {
int i;
for (i = 2; i <= n; i++) {
if (lua_isfunction(L, i)) { /* avoid 'calling' extra info. */
lua_pushvalue(L, i); /* get option (a function) */
lua_pushvalue(L, -2); /* module */
lua_call(L, 1, 0);
}
}
}
static void modinit (lua_State *L, const char *modname) {
const char *dot;
lua_pushvalue(L, -1);
lua_setfield(L, -2, "_M"); /* module._M = module */
lua_pushstring(L, modname);
lua_setfield(L, -2, "_NAME");
dot = strrchr(modname, '.'); /* look for last dot in module name */
if (dot == NULL) dot = modname;
else dot++;
/* set _PACKAGE as package name (full module name minus last part) */
lua_pushlstring(L, modname, dot - modname);
lua_setfield(L, -2, "_PACKAGE");
}
static int ll_module (lua_State *L) {
const char *modname = luaL_checkstring(L, 1);
int lastarg = lua_gettop(L); /* last parameter */
luaL_pushmodule(L, modname, 1); /* get/create module table */
/* check whether table already has a _NAME field */
if (lua_getfield(L, -1, "_NAME") != LUA_TNIL)
lua_pop(L, 1); /* table is an initialized module */
else { /* no; initialize it */
lua_pop(L, 1);
modinit(L, modname);
}
lua_pushvalue(L, -1);
set_env(L);
dooptions(L, lastarg);
return 1;
}
static int ll_seeall (lua_State *L) {
luaL_checktype(L, 1, LUA_TTABLE);
if (!lua_getmetatable(L, 1)) {
lua_createtable(L, 0, 1); /* create new metatable */
lua_pushvalue(L, -1);
lua_setmetatable(L, 1);
}
lua_pushglobaltable(L);
lua_setfield(L, -2, "__index"); /* mt.__index = _G */
return 0;
}
#endif
/* }====================================================== */
/* auxiliary mark (for internal use) */
#define AUXMARK "\1"
/*
** return registry.LUA_NOENV as a boolean
*/
static int noenv (lua_State *L) {
int b;
lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
b = lua_toboolean(L, -1);
lua_pop(L, 1); /* remove value */
return b;
}
static void setpath (lua_State *L, const char *fieldname, const char *envname1,
const char *envname2, const char *def) {
const char *path = getenv(envname1);
if (path == NULL) /* no environment variable? */
path = getenv(envname2); /* try alternative name */
if (path == NULL || noenv(L)) /* no environment variable? */
lua_pushstring(L, def); /* use default */
else {
/* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */
path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP,
LUA_PATH_SEP AUXMARK LUA_PATH_SEP);
luaL_gsub(L, path, AUXMARK, def);
lua_remove(L, -2);
}
setprogdir(L);
lua_setfield(L, -2, fieldname);
}
static const luaL_Reg pk_funcs[] = { static const luaL_Reg pk_funcs[] = {
{"loadlib", ll_loadlib}, {"loadlib", ll_loadlib},
{"searchpath", ll_searchpath}, {"searchpath", ll_searchpath},
#if defined(LUA_COMPAT_MODULE)
{"seeall", ll_seeall},
#endif
/* placeholders */ /* placeholders */
{"preload", NULL}, {"preload", NULL},
{"cpath", NULL}, {"cpath", NULL},
@ -718,9 +699,6 @@ static const luaL_Reg pk_funcs[] = {
static const luaL_Reg ll_funcs[] = { static const luaL_Reg ll_funcs[] = {
#if defined(LUA_COMPAT_MODULE)
{"module", ll_module},
#endif
{"require", ll_require}, {"require", ll_require},
{NULL, NULL} {NULL, NULL}
}; };
@ -738,10 +716,6 @@ static void createsearcherstable (lua_State *L) {
lua_pushcclosure(L, searchers[i], 1); lua_pushcclosure(L, searchers[i], 1);
lua_rawseti(L, -2, i+1); lua_rawseti(L, -2, i+1);
} }
#if defined(LUA_COMPAT_LOADERS)
lua_pushvalue(L, -1); /* make a copy of 'searchers' table */
lua_setfield(L, -3, "loaders"); /* put it in field 'loaders' */
#endif
lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */ lua_setfield(L, -2, "searchers"); /* put it in field 'searchers' */
} }
@ -751,12 +725,11 @@ static void createsearcherstable (lua_State *L) {
** setting a finalizer to close all libraries when closing state. ** setting a finalizer to close all libraries when closing state.
*/ */
static void createclibstable (lua_State *L) { static void createclibstable (lua_State *L) {
lua_newtable(L); /* create CLIBS table */ luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS); /* create CLIBS table */
lua_createtable(L, 0, 1); /* create metatable for CLIBS */ lua_createtable(L, 0, 1); /* create metatable for CLIBS */
lua_pushcfunction(L, gctm); lua_pushcfunction(L, gctm);
lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */ lua_setfield(L, -2, "__gc"); /* set finalizer for CLIBS table */
lua_setmetatable(L, -2); lua_setmetatable(L, -2);
lua_rawsetp(L, LUA_REGISTRYINDEX, &CLIBS); /* set CLIBS table in registry */
} }
@ -764,19 +737,18 @@ LUAMOD_API int luaopen_package (lua_State *L) {
createclibstable(L); createclibstable(L);
luaL_newlib(L, pk_funcs); /* create 'package' table */ luaL_newlib(L, pk_funcs); /* create 'package' table */
createsearcherstable(L); createsearcherstable(L);
/* set field 'path' */ /* set paths */
setpath(L, "path", LUA_PATHVARVERSION, LUA_PATH_VAR, LUA_PATH_DEFAULT); setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT);
/* set field 'cpath' */ setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
setpath(L, "cpath", LUA_CPATHVARVERSION, LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
/* store config information */ /* store config information */
lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n" lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
LUA_EXEC_DIR "\n" LUA_IGMARK "\n"); LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
lua_setfield(L, -2, "config"); lua_setfield(L, -2, "config");
/* set field 'loaded' */ /* set field 'loaded' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED"); luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_setfield(L, -2, "loaded"); lua_setfield(L, -2, "loaded");
/* set field 'preload' */ /* set field 'preload' */
luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD"); luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
lua_setfield(L, -2, "preload"); lua_setfield(L, -2, "preload");
lua_pushglobaltable(L); lua_pushglobaltable(L);
lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */ lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */

322
lua-5.3.3/src/lobject.c → lua-5.4.0/src/lobject.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lobject.c,v 2.111 2016/05/20 14:07:48 roberto Exp $ ** $Id: lobject.c $
** Some generic functions over Lua objects ** Some generic functions over Lua objects
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -29,36 +29,6 @@
#include "lvm.h" #include "lvm.h"
LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};
/*
** converts an integer to a "floating point byte", represented as
** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if
** eeeee != 0 and (xxx) otherwise.
*/
int luaO_int2fb (unsigned int x) {
int e = 0; /* exponent */
if (x < 8) return x;
while (x >= (8 << 4)) { /* coarse steps */
x = (x + 0xf) >> 4; /* x = ceil(x / 16) */
e += 4;
}
while (x >= (8 << 1)) { /* fine steps */
x = (x + 1) >> 1; /* x = ceil(x / 2) */
e++;
}
return ((e+1) << 3) | (cast_int(x) - 8);
}
/* converts back */
int luaO_fb2int (int x) {
return (x < 8) ? x : ((x & 7) + 8) << ((x >> 3) - 1);
}
/* /*
** Computes ceil(log2(x)) ** Computes ceil(log2(x))
*/ */
@ -87,7 +57,7 @@ static lua_Integer intarith (lua_State *L, int op, lua_Integer v1,
case LUA_OPSUB:return intop(-, v1, v2); case LUA_OPSUB:return intop(-, v1, v2);
case LUA_OPMUL:return intop(*, v1, v2); case LUA_OPMUL:return intop(*, v1, v2);
case LUA_OPMOD: return luaV_mod(L, v1, v2); case LUA_OPMOD: return luaV_mod(L, v1, v2);
case LUA_OPIDIV: return luaV_div(L, v1, v2); case LUA_OPIDIV: return luaV_idiv(L, v1, v2);
case LUA_OPBAND: return intop(&, v1, v2); case LUA_OPBAND: return intop(&, v1, v2);
case LUA_OPBOR: return intop(|, v1, v2); case LUA_OPBOR: return intop(|, v1, v2);
case LUA_OPBXOR: return intop(^, v1, v2); case LUA_OPBXOR: return intop(^, v1, v2);
@ -110,53 +80,55 @@ static lua_Number numarith (lua_State *L, int op, lua_Number v1,
case LUA_OPPOW: return luai_numpow(L, v1, v2); case LUA_OPPOW: return luai_numpow(L, v1, v2);
case LUA_OPIDIV: return luai_numidiv(L, v1, v2); case LUA_OPIDIV: return luai_numidiv(L, v1, v2);
case LUA_OPUNM: return luai_numunm(L, v1); case LUA_OPUNM: return luai_numunm(L, v1);
case LUA_OPMOD: { case LUA_OPMOD: return luaV_modf(L, v1, v2);
lua_Number m;
luai_nummod(L, v1, v2, m);
return m;
}
default: lua_assert(0); return 0; default: lua_assert(0); return 0;
} }
} }
void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2, int luaO_rawarith (lua_State *L, int op, const TValue *p1, const TValue *p2,
TValue *res) { TValue *res) {
switch (op) { switch (op) {
case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR: case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
case LUA_OPSHL: case LUA_OPSHR: case LUA_OPSHL: case LUA_OPSHR:
case LUA_OPBNOT: { /* operate only on integers */ case LUA_OPBNOT: { /* operate only on integers */
lua_Integer i1; lua_Integer i2; lua_Integer i1; lua_Integer i2;
if (tointeger(p1, &i1) && tointeger(p2, &i2)) { if (tointegerns(p1, &i1) && tointegerns(p2, &i2)) {
setivalue(res, intarith(L, op, i1, i2)); setivalue(res, intarith(L, op, i1, i2));
return; return 1;
} }
else break; /* go to the end */ else return 0; /* fail */
} }
case LUA_OPDIV: case LUA_OPPOW: { /* operate only on floats */ case LUA_OPDIV: case LUA_OPPOW: { /* operate only on floats */
lua_Number n1; lua_Number n2; lua_Number n1; lua_Number n2;
if (tonumber(p1, &n1) && tonumber(p2, &n2)) { if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
setfltvalue(res, numarith(L, op, n1, n2)); setfltvalue(res, numarith(L, op, n1, n2));
return; return 1;
} }
else break; /* go to the end */ else return 0; /* fail */
} }
default: { /* other operations */ default: { /* other operations */
lua_Number n1; lua_Number n2; lua_Number n1; lua_Number n2;
if (ttisinteger(p1) && ttisinteger(p2)) { if (ttisinteger(p1) && ttisinteger(p2)) {
setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2))); setivalue(res, intarith(L, op, ivalue(p1), ivalue(p2)));
return; return 1;
} }
else if (tonumber(p1, &n1) && tonumber(p2, &n2)) { else if (tonumberns(p1, n1) && tonumberns(p2, n2)) {
setfltvalue(res, numarith(L, op, n1, n2)); setfltvalue(res, numarith(L, op, n1, n2));
return; return 1;
} }
else break; /* go to the end */ else return 0; /* fail */
} }
} }
/* could not perform raw operation; try metamethod */ }
lua_assert(L != NULL); /* should not fail when folding (compile time) */
luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD));
void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2,
StkId res) {
if (!luaO_rawarith(L, op, p1, p2, s2v(res))) {
/* could not perform raw operation; try metamethod */
luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD));
}
} }
@ -187,7 +159,7 @@ static int isneg (const char **s) {
#define MAXSIGDIG 30 #define MAXSIGDIG 30
/* /*
** convert an hexadecimal numeric string to a number, following ** convert a hexadecimal numeric string to a number, following
** C99 specification for 'strtod' ** C99 specification for 'strtod'
*/ */
static lua_Number lua_strx2number (const char *s, char **endptr) { static lua_Number lua_strx2number (const char *s, char **endptr) {
@ -198,9 +170,9 @@ static lua_Number lua_strx2number (const char *s, char **endptr) {
int e = 0; /* exponent correction */ int e = 0; /* exponent correction */
int neg; /* 1 if number is negative */ int neg; /* 1 if number is negative */
int hasdot = 0; /* true after seen a dot */ int hasdot = 0; /* true after seen a dot */
*endptr = cast(char *, s); /* nothing is valid yet */ *endptr = cast_charp(s); /* nothing is valid yet */
while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */ while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */
neg = isneg(&s); /* check signal */ neg = isneg(&s); /* check sign */
if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */ if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */
return 0.0; /* invalid format (no '0x') */ return 0.0; /* invalid format (no '0x') */
for (s += 2; ; s++) { /* skip '0x' and read numeral */ for (s += 2; ; s++) { /* skip '0x' and read numeral */
@ -220,20 +192,20 @@ static lua_Number lua_strx2number (const char *s, char **endptr) {
} }
if (nosigdig + sigdig == 0) /* no digits? */ if (nosigdig + sigdig == 0) /* no digits? */
return 0.0; /* invalid format */ return 0.0; /* invalid format */
*endptr = cast(char *, s); /* valid up to here */ *endptr = cast_charp(s); /* valid up to here */
e *= 4; /* each digit multiplies/divides value by 2^4 */ e *= 4; /* each digit multiplies/divides value by 2^4 */
if (*s == 'p' || *s == 'P') { /* exponent part? */ if (*s == 'p' || *s == 'P') { /* exponent part? */
int exp1 = 0; /* exponent value */ int exp1 = 0; /* exponent value */
int neg1; /* exponent signal */ int neg1; /* exponent sign */
s++; /* skip 'p' */ s++; /* skip 'p' */
neg1 = isneg(&s); /* signal */ neg1 = isneg(&s); /* sign */
if (!lisdigit(cast_uchar(*s))) if (!lisdigit(cast_uchar(*s)))
return 0.0; /* invalid; must have at least one digit */ return 0.0; /* invalid; must have at least one digit */
while (lisdigit(cast_uchar(*s))) /* read exponent */ while (lisdigit(cast_uchar(*s))) /* read exponent */
exp1 = exp1 * 10 + *(s++) - '0'; exp1 = exp1 * 10 + *(s++) - '0';
if (neg1) exp1 = -exp1; if (neg1) exp1 = -exp1;
e += exp1; e += exp1;
*endptr = cast(char *, s); /* valid up to here */ *endptr = cast_charp(s); /* valid up to here */
} }
if (neg) r = -r; if (neg) r = -r;
return l_mathop(ldexp)(r, e); return l_mathop(ldexp)(r, e);
@ -262,11 +234,11 @@ static const char *l_str2dloc (const char *s, lua_Number *result, int mode) {
** Convert string 's' to a Lua number (put in 'result'). Return NULL ** Convert string 's' to a Lua number (put in 'result'). Return NULL
** on fail or the address of the ending '\0' on success. ** on fail or the address of the ending '\0' on success.
** 'pmode' points to (and 'mode' contains) special things in the string: ** 'pmode' points to (and 'mode' contains) special things in the string:
** - 'x'/'X' means an hexadecimal numeral ** - 'x'/'X' means a hexadecimal numeral
** - 'n'/'N' means 'inf' or 'nan' (which should be rejected) ** - 'n'/'N' means 'inf' or 'nan' (which should be rejected)
** - '.' just optimizes the search for the common case (nothing special) ** - '.' just optimizes the search for the common case (nothing special)
** This function accepts both the current locale or a dot as the radix ** This function accepts both the current locale or a dot as the radix
** mark. If the convertion fails, it may mean number has a dot but ** mark. If the conversion fails, it may mean number has a dot but
** locale accepts something else. In that case, the code copies 's' ** locale accepts something else. In that case, the code copies 's'
** to a buffer (because 's' is read-only), changes the dot to the ** to a buffer (because 's' is read-only), changes the dot to the
** current locale radix mark, and tries to convert again. ** current locale radix mark, and tries to convert again.
@ -280,7 +252,7 @@ static const char *l_str2d (const char *s, lua_Number *result) {
endptr = l_str2dloc(s, result, mode); /* try to convert */ endptr = l_str2dloc(s, result, mode); /* try to convert */
if (endptr == NULL) { /* failed? may be a different locale */ if (endptr == NULL) { /* failed? may be a different locale */
char buff[L_MAXLENNUM + 1]; char buff[L_MAXLENNUM + 1];
char *pdot = strchr(s, '.'); const char *pdot = strchr(s, '.');
if (strlen(s) > L_MAXLENNUM || pdot == NULL) if (strlen(s) > L_MAXLENNUM || pdot == NULL)
return NULL; /* string too long or no dot; fail */ return NULL; /* string too long or no dot; fail */
strcpy(buff, s); /* copy string to buffer */ strcpy(buff, s); /* copy string to buffer */
@ -345,17 +317,17 @@ size_t luaO_str2num (const char *s, TValue *o) {
int luaO_utf8esc (char *buff, unsigned long x) { int luaO_utf8esc (char *buff, unsigned long x) {
int n = 1; /* number of bytes put in buffer (backwards) */ int n = 1; /* number of bytes put in buffer (backwards) */
lua_assert(x <= 0x10FFFF); lua_assert(x <= 0x7FFFFFFFu);
if (x < 0x80) /* ascii? */ if (x < 0x80) /* ascii? */
buff[UTF8BUFFSZ - 1] = cast(char, x); buff[UTF8BUFFSZ - 1] = cast_char(x);
else { /* need continuation bytes */ else { /* need continuation bytes */
unsigned int mfb = 0x3f; /* maximum that fits in first byte */ unsigned int mfb = 0x3f; /* maximum that fits in first byte */
do { /* add continuation bytes */ do { /* add continuation bytes */
buff[UTF8BUFFSZ - (n++)] = cast(char, 0x80 | (x & 0x3f)); buff[UTF8BUFFSZ - (n++)] = cast_char(0x80 | (x & 0x3f));
x >>= 6; /* remove added bits */ x >>= 6; /* remove added bits */
mfb >>= 1; /* now there is one less bit available in first byte */ mfb >>= 1; /* now there is one less bit available in first byte */
} while (x > mfb); /* still needs continuation byte? */ } while (x > mfb); /* still needs continuation byte? */
buff[UTF8BUFFSZ - n] = cast(char, (~mfb << 1) | x); /* add first byte */ buff[UTF8BUFFSZ - n] = cast_char((~mfb << 1) | x); /* add first byte */
} }
return n; return n;
} }
@ -366,87 +338,178 @@ int luaO_utf8esc (char *buff, unsigned long x) {
/* /*
** Convert a number object to a string ** Convert a number object to a string, adding it to a buffer
*/ */
void luaO_tostring (lua_State *L, StkId obj) { static int tostringbuff (TValue *obj, char *buff) {
char buff[MAXNUMBER2STR]; int len;
size_t len;
lua_assert(ttisnumber(obj)); lua_assert(ttisnumber(obj));
if (ttisinteger(obj)) if (ttisinteger(obj))
len = lua_integer2str(buff, sizeof(buff), ivalue(obj)); len = lua_integer2str(buff, MAXNUMBER2STR, ivalue(obj));
else { else {
len = lua_number2str(buff, sizeof(buff), fltvalue(obj)); len = lua_number2str(buff, MAXNUMBER2STR, fltvalue(obj));
#if !defined(LUA_COMPAT_FLOATSTRING)
if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */ if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */
buff[len++] = lua_getlocaledecpoint(); buff[len++] = lua_getlocaledecpoint();
buff[len++] = '0'; /* adds '.0' to result */ buff[len++] = '0'; /* adds '.0' to result */
} }
#endif
} }
setsvalue2s(L, obj, luaS_newlstr(L, buff, len)); return len;
}
static void pushstr (lua_State *L, const char *str, size_t l) {
setsvalue2s(L, L->top, luaS_newlstr(L, str, l));
luaD_inctop(L);
} }
/* /*
** this function handles only '%d', '%c', '%f', '%p', and '%s' ** Convert a number object to a Lua string, replacing the value at 'obj'
*/
void luaO_tostring (lua_State *L, TValue *obj) {
char buff[MAXNUMBER2STR];
int len = tostringbuff(obj, buff);
setsvalue(L, obj, luaS_newlstr(L, buff, len));
}
/*
** {==================================================================
** 'luaO_pushvfstring'
** ===================================================================
*/
/* size for buffer space used by 'luaO_pushvfstring' */
#define BUFVFS 400
/* buffer used by 'luaO_pushvfstring' */
typedef struct BuffFS {
lua_State *L;
int pushed; /* number of string pieces already on the stack */
int blen; /* length of partial string in 'space' */
char space[BUFVFS]; /* holds last part of the result */
} BuffFS;
/*
** Push given string to the stack, as part of the buffer. If the stack
** is almost full, join all partial strings in the stack into one.
*/
static void pushstr (BuffFS *buff, const char *str, size_t l) {
lua_State *L = buff->L;
setsvalue2s(L, L->top, luaS_newlstr(L, str, l));
L->top++; /* may use one extra slot */
buff->pushed++;
if (buff->pushed > 1 && L->top + 1 >= L->stack_last) {
luaV_concat(L, buff->pushed); /* join all partial results into one */
buff->pushed = 1;
}
}
/*
** empty the buffer space into the stack
*/
static void clearbuff (BuffFS *buff) {
pushstr(buff, buff->space, buff->blen); /* push buffer contents */
buff->blen = 0; /* space now is empty */
}
/*
** Get a space of size 'sz' in the buffer. If buffer has not enough
** space, empty it. 'sz' must fit in an empty buffer.
*/
static char *getbuff (BuffFS *buff, int sz) {
lua_assert(buff->blen <= BUFVFS); lua_assert(sz <= BUFVFS);
if (sz > BUFVFS - buff->blen) /* not enough space? */
clearbuff(buff);
return buff->space + buff->blen;
}
#define addsize(b,sz) ((b)->blen += (sz))
/*
** Add 'str' to the buffer. If string is larger than the buffer space,
** push the string directly to the stack.
*/
static void addstr2buff (BuffFS *buff, const char *str, size_t slen) {
if (slen <= BUFVFS) { /* does string fit into buffer? */
char *bf = getbuff(buff, cast_int(slen));
memcpy(bf, str, slen); /* add string to buffer */
addsize(buff, cast_int(slen));
}
else { /* string larger than buffer */
clearbuff(buff); /* string comes after buffer's content */
pushstr(buff, str, slen); /* push string */
}
}
/*
** Add a number to the buffer.
*/
static void addnum2buff (BuffFS *buff, TValue *num) {
char *numbuff = getbuff(buff, MAXNUMBER2STR);
int len = tostringbuff(num, numbuff); /* format number into 'numbuff' */
addsize(buff, len);
}
/*
** this function handles only '%d', '%c', '%f', '%p', '%s', and '%%'
conventional formats, plus Lua-specific '%I' and '%U' conventional formats, plus Lua-specific '%I' and '%U'
*/ */
const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) { const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
int n = 0; BuffFS buff; /* holds last part of the result */
for (;;) { const char *e; /* points to next '%' */
const char *e = strchr(fmt, '%'); buff.pushed = buff.blen = 0;
if (e == NULL) break; buff.L = L;
pushstr(L, fmt, e - fmt); while ((e = strchr(fmt, '%')) != NULL) {
switch (*(e+1)) { addstr2buff(&buff, fmt, e - fmt); /* add 'fmt' up to '%' */
switch (*(e + 1)) { /* conversion specifier */
case 's': { /* zero-terminated string */ case 's': { /* zero-terminated string */
const char *s = va_arg(argp, char *); const char *s = va_arg(argp, char *);
if (s == NULL) s = "(null)"; if (s == NULL) s = "(null)";
pushstr(L, s, strlen(s)); addstr2buff(&buff, s, strlen(s));
break; break;
} }
case 'c': { /* an 'int' as a character */ case 'c': { /* an 'int' as a character */
char buff = cast(char, va_arg(argp, int)); char c = cast_uchar(va_arg(argp, int));
if (lisprint(cast_uchar(buff))) addstr2buff(&buff, &c, sizeof(char));
pushstr(L, &buff, 1);
else /* non-printable character; print its code */
luaO_pushfstring(L, "<\\%d>", cast_uchar(buff));
break; break;
} }
case 'd': { /* an 'int' */ case 'd': { /* an 'int' */
setivalue(L->top, va_arg(argp, int)); TValue num;
goto top2str; setivalue(&num, va_arg(argp, int));
addnum2buff(&buff, &num);
break;
} }
case 'I': { /* a 'lua_Integer' */ case 'I': { /* a 'lua_Integer' */
setivalue(L->top, cast(lua_Integer, va_arg(argp, l_uacInt))); TValue num;
goto top2str; setivalue(&num, cast(lua_Integer, va_arg(argp, l_uacInt)));
addnum2buff(&buff, &num);
break;
} }
case 'f': { /* a 'lua_Number' */ case 'f': { /* a 'lua_Number' */
setfltvalue(L->top, cast_num(va_arg(argp, l_uacNumber))); TValue num;
top2str: /* convert the top element to a string */ setfltvalue(&num, cast_num(va_arg(argp, l_uacNumber)));
luaD_inctop(L); addnum2buff(&buff, &num);
luaO_tostring(L, L->top - 1);
break; break;
} }
case 'p': { /* a pointer */ case 'p': { /* a pointer */
char buff[4*sizeof(void *) + 8]; /* should be enough space for a '%p' */ const int sz = 3 * sizeof(void*) + 8; /* enough space for '%p' */
int l = l_sprintf(buff, sizeof(buff), "%p", va_arg(argp, void *)); char *bf = getbuff(&buff, sz);
pushstr(L, buff, l); void *p = va_arg(argp, void *);
int len = lua_pointer2str(bf, sz, p);
addsize(&buff, len);
break; break;
} }
case 'U': { /* an 'int' as a UTF-8 sequence */ case 'U': { /* a 'long' as a UTF-8 sequence */
char buff[UTF8BUFFSZ]; char bf[UTF8BUFFSZ];
int l = luaO_utf8esc(buff, cast(long, va_arg(argp, long))); int len = luaO_utf8esc(bf, va_arg(argp, long));
pushstr(L, buff + UTF8BUFFSZ - l, l); addstr2buff(&buff, bf + UTF8BUFFSZ - len, len);
break; break;
} }
case '%': { case '%': {
pushstr(L, "%", 1); addstr2buff(&buff, "%", 1);
break; break;
} }
default: { default: {
@ -454,13 +517,13 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
*(e + 1)); *(e + 1));
} }
} }
n += 2; fmt = e + 2; /* skip '%' and the specifier */
fmt = e+2;
} }
luaD_checkstack(L, 1); addstr2buff(&buff, fmt, strlen(fmt)); /* rest of 'fmt' */
pushstr(L, fmt, strlen(fmt)); clearbuff(&buff); /* empty buffer into the stack */
if (n > 0) luaV_concat(L, n + 1); if (buff.pushed > 1)
return svalue(L->top - 1); luaV_concat(L, buff.pushed); /* join all partial results */
return svalue(s2v(L->top - 1));
} }
@ -473,9 +536,8 @@ const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
return msg; return msg;
} }
/* }================================================================== */
/* number of chars of a literal string without the ending \0 */
#define LL(x) (sizeof(x)/sizeof(char) - 1)
#define RETS "..." #define RETS "..."
#define PRE "[string \"" #define PRE "[string \""
@ -483,36 +545,36 @@ const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
#define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) ) #define addstr(a,b,l) ( memcpy(a,b,(l) * sizeof(char)), a += (l) )
void luaO_chunkid (char *out, const char *source, size_t bufflen) { void luaO_chunkid (char *out, const char *source, size_t srclen) {
size_t l = strlen(source); size_t bufflen = LUA_IDSIZE; /* free space in buffer */
if (*source == '=') { /* 'literal' source */ if (*source == '=') { /* 'literal' source */
if (l <= bufflen) /* small enough? */ if (srclen <= bufflen) /* small enough? */
memcpy(out, source + 1, l * sizeof(char)); memcpy(out, source + 1, srclen * sizeof(char));
else { /* truncate it */ else { /* truncate it */
addstr(out, source + 1, bufflen - 1); addstr(out, source + 1, bufflen - 1);
*out = '\0'; *out = '\0';
} }
} }
else if (*source == '@') { /* file name */ else if (*source == '@') { /* file name */
if (l <= bufflen) /* small enough? */ if (srclen <= bufflen) /* small enough? */
memcpy(out, source + 1, l * sizeof(char)); memcpy(out, source + 1, srclen * sizeof(char));
else { /* add '...' before rest of name */ else { /* add '...' before rest of name */
addstr(out, RETS, LL(RETS)); addstr(out, RETS, LL(RETS));
bufflen -= LL(RETS); bufflen -= LL(RETS);
memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char)); memcpy(out, source + 1 + srclen - bufflen, bufflen * sizeof(char));
} }
} }
else { /* string; format as [string "source"] */ else { /* string; format as [string "source"] */
const char *nl = strchr(source, '\n'); /* find first new line (if any) */ const char *nl = strchr(source, '\n'); /* find first new line (if any) */
addstr(out, PRE, LL(PRE)); /* add prefix */ addstr(out, PRE, LL(PRE)); /* add prefix */
bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */ bufflen -= LL(PRE RETS POS) + 1; /* save space for prefix+suffix+'\0' */
if (l < bufflen && nl == NULL) { /* small one-line source? */ if (srclen < bufflen && nl == NULL) { /* small one-line source? */
addstr(out, source, l); /* keep it */ addstr(out, source, srclen); /* keep it */
} }
else { else {
if (nl != NULL) l = nl - source; /* stop at first newline */ if (nl != NULL) srclen = nl - source; /* stop at first newline */
if (l > bufflen) l = bufflen; if (srclen > bufflen) srclen = bufflen;
addstr(out, source, l); addstr(out, source, srclen);
addstr(out, RETS, LL(RETS)); addstr(out, RETS, LL(RETS));
} }
memcpy(out, POS, (LL(POS) + 1) * sizeof(char)); memcpy(out, POS, (LL(POS) + 1) * sizeof(char));

787
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@ -0,0 +1,787 @@
/*
** $Id: lobject.h $
** Type definitions for Lua objects
** See Copyright Notice in lua.h
*/
#ifndef lobject_h
#define lobject_h
#include <stdarg.h>
#include "llimits.h"
#include "lua.h"
/*
** Extra types for collectable non-values
*/
#define LUA_TUPVAL LUA_NUMTYPES /* upvalues */
#define LUA_TPROTO (LUA_NUMTYPES+1) /* function prototypes */
/*
** number of all possible types (including LUA_TNONE)
*/
#define LUA_TOTALTYPES (LUA_TPROTO + 2)
/*
** tags for Tagged Values have the following use of bits:
** bits 0-3: actual tag (a LUA_T* constant)
** bits 4-5: variant bits
** bit 6: whether value is collectable
*/
/* add variant bits to a type */
#define makevariant(t,v) ((t) | ((v) << 4))
/*
** Union of all Lua values
*/
typedef union Value {
struct GCObject *gc; /* collectable objects */
void *p; /* light userdata */
lua_CFunction f; /* light C functions */
lua_Integer i; /* integer numbers */
lua_Number n; /* float numbers */
} Value;
/*
** Tagged Values. This is the basic representation of values in Lua:
** an actual value plus a tag with its type.
*/
#define TValuefields Value value_; lu_byte tt_
typedef struct TValue {
TValuefields;
} TValue;
#define val_(o) ((o)->value_)
#define valraw(o) (&val_(o))
/* raw type tag of a TValue */
#define rawtt(o) ((o)->tt_)
/* tag with no variants (bits 0-3) */
#define novariant(t) ((t) & 0x0F)
/* type tag of a TValue (bits 0-3 for tags + variant bits 4-5) */
#define withvariant(t) ((t) & 0x3F)
#define ttypetag(o) withvariant(rawtt(o))
/* type of a TValue */
#define ttype(o) (novariant(rawtt(o)))
/* Macros to test type */
#define checktag(o,t) (rawtt(o) == (t))
#define checktype(o,t) (ttype(o) == (t))
/* Macros for internal tests */
/* collectable object has the same tag as the original value */
#define righttt(obj) (ttypetag(obj) == gcvalue(obj)->tt)
/*
** Any value being manipulated by the program either is non
** collectable, or the collectable object has the right tag
** and it is not dead.
*/
#define checkliveness(L,obj) \
((void)L, lua_longassert(!iscollectable(obj) || \
(righttt(obj) && (L == NULL || !isdead(G(L),gcvalue(obj))))))
/* Macros to set values */
/* set a value's tag */
#define settt_(o,t) ((o)->tt_=(t))
/* main macro to copy values (from 'obj1' to 'obj2') */
#define setobj(L,obj1,obj2) \
{ TValue *io1=(obj1); const TValue *io2=(obj2); \
io1->value_ = io2->value_; settt_(io1, io2->tt_); \
checkliveness(L,io1); lua_assert(!isnonstrictnil(io1)); }
/*
** Different types of assignments, according to source and destination.
** (They are mostly equal now, but may be different in the future.)
*/
/* from stack to stack */
#define setobjs2s(L,o1,o2) setobj(L,s2v(o1),s2v(o2))
/* to stack (not from same stack) */
#define setobj2s(L,o1,o2) setobj(L,s2v(o1),o2)
/* from table to same table */
#define setobjt2t setobj
/* to new object */
#define setobj2n setobj
/* to table */
#define setobj2t setobj
/*
** Entries in the Lua stack
*/
typedef union StackValue {
TValue val;
} StackValue;
/* index to stack elements */
typedef StackValue *StkId;
/* convert a 'StackValue' to a 'TValue' */
#define s2v(o) (&(o)->val)
/*
** {==================================================================
** Nil
** ===================================================================
*/
/* Standard nil */
#define LUA_VNIL makevariant(LUA_TNIL, 0)
/* Empty slot (which might be different from a slot containing nil) */
#define LUA_VEMPTY makevariant(LUA_TNIL, 1)
/* Value returned for a key not found in a table (absent key) */
#define LUA_VABSTKEY makevariant(LUA_TNIL, 2)
/* macro to test for (any kind of) nil */
#define ttisnil(v) checktype((v), LUA_TNIL)
/* macro to test for a standard nil */
#define ttisstrictnil(o) checktag((o), LUA_VNIL)
#define setnilvalue(obj) settt_(obj, LUA_VNIL)
#define isabstkey(v) checktag((v), LUA_VABSTKEY)
/*
** macro to detect non-standard nils (used only in assertions)
*/
#define isnonstrictnil(v) (ttisnil(v) && !ttisstrictnil(v))
/*
** By default, entries with any kind of nil are considered empty.
** (In any definition, values associated with absent keys must also
** be accepted as empty.)
*/
#define isempty(v) ttisnil(v)
/* macro defining a value corresponding to an absent key */
#define ABSTKEYCONSTANT {NULL}, LUA_VABSTKEY
/* mark an entry as empty */
#define setempty(v) settt_(v, LUA_VEMPTY)
/* }================================================================== */
/*
** {==================================================================
** Booleans
** ===================================================================
*/
#define LUA_VFALSE makevariant(LUA_TBOOLEAN, 0)
#define LUA_VTRUE makevariant(LUA_TBOOLEAN, 1)
#define ttisboolean(o) checktype((o), LUA_TBOOLEAN)
#define ttisfalse(o) checktag((o), LUA_VFALSE)
#define ttistrue(o) checktag((o), LUA_VTRUE)
#define l_isfalse(o) (ttisfalse(o) || ttisnil(o))
#define setbfvalue(obj) settt_(obj, LUA_VFALSE)
#define setbtvalue(obj) settt_(obj, LUA_VTRUE)
/* }================================================================== */
/*
** {==================================================================
** Threads
** ===================================================================
*/
#define LUA_VTHREAD makevariant(LUA_TTHREAD, 0)
#define ttisthread(o) checktag((o), ctb(LUA_VTHREAD))
#define thvalue(o) check_exp(ttisthread(o), gco2th(val_(o).gc))
#define setthvalue(L,obj,x) \
{ TValue *io = (obj); lua_State *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_VTHREAD)); \
checkliveness(L,io); }
#define setthvalue2s(L,o,t) setthvalue(L,s2v(o),t)
/* }================================================================== */
/*
** {==================================================================
** Collectable Objects
** ===================================================================
*/
/*
** Common Header for all collectable objects (in macro form, to be
** included in other objects)
*/
#define CommonHeader struct GCObject *next; lu_byte tt; lu_byte marked
/* Common type for all collectable objects */
typedef struct GCObject {
CommonHeader;
} GCObject;
/* Bit mark for collectable types */
#define BIT_ISCOLLECTABLE (1 << 6)
#define iscollectable(o) (rawtt(o) & BIT_ISCOLLECTABLE)
/* mark a tag as collectable */
#define ctb(t) ((t) | BIT_ISCOLLECTABLE)
#define gcvalue(o) check_exp(iscollectable(o), val_(o).gc)
#define gcvalueraw(v) ((v).gc)
#define setgcovalue(L,obj,x) \
{ TValue *io = (obj); GCObject *i_g=(x); \
val_(io).gc = i_g; settt_(io, ctb(i_g->tt)); }
/* }================================================================== */
/*
** {==================================================================
** Numbers
** ===================================================================
*/
/* Variant tags for numbers */
#define LUA_VNUMINT makevariant(LUA_TNUMBER, 0) /* integer numbers */
#define LUA_VNUMFLT makevariant(LUA_TNUMBER, 1) /* float numbers */
#define ttisnumber(o) checktype((o), LUA_TNUMBER)
#define ttisfloat(o) checktag((o), LUA_VNUMFLT)
#define ttisinteger(o) checktag((o), LUA_VNUMINT)
#define nvalue(o) check_exp(ttisnumber(o), \
(ttisinteger(o) ? cast_num(ivalue(o)) : fltvalue(o)))
#define fltvalue(o) check_exp(ttisfloat(o), val_(o).n)
#define ivalue(o) check_exp(ttisinteger(o), val_(o).i)
#define fltvalueraw(v) ((v).n)
#define ivalueraw(v) ((v).i)
#define setfltvalue(obj,x) \
{ TValue *io=(obj); val_(io).n=(x); settt_(io, LUA_VNUMFLT); }
#define chgfltvalue(obj,x) \
{ TValue *io=(obj); lua_assert(ttisfloat(io)); val_(io).n=(x); }
#define setivalue(obj,x) \
{ TValue *io=(obj); val_(io).i=(x); settt_(io, LUA_VNUMINT); }
#define chgivalue(obj,x) \
{ TValue *io=(obj); lua_assert(ttisinteger(io)); val_(io).i=(x); }
/* }================================================================== */
/*
** {==================================================================
** Strings
** ===================================================================
*/
/* Variant tags for strings */
#define LUA_VSHRSTR makevariant(LUA_TSTRING, 0) /* short strings */
#define LUA_VLNGSTR makevariant(LUA_TSTRING, 1) /* long strings */
#define ttisstring(o) checktype((o), LUA_TSTRING)
#define ttisshrstring(o) checktag((o), ctb(LUA_VSHRSTR))
#define ttislngstring(o) checktag((o), ctb(LUA_VLNGSTR))
#define tsvalueraw(v) (gco2ts((v).gc))
#define tsvalue(o) check_exp(ttisstring(o), gco2ts(val_(o).gc))
#define setsvalue(L,obj,x) \
{ TValue *io = (obj); TString *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(x_->tt)); \
checkliveness(L,io); }
/* set a string to the stack */
#define setsvalue2s(L,o,s) setsvalue(L,s2v(o),s)
/* set a string to a new object */
#define setsvalue2n setsvalue
/*
** Header for a string value.
*/
typedef struct TString {
CommonHeader;
lu_byte extra; /* reserved words for short strings; "has hash" for longs */
lu_byte shrlen; /* length for short strings */
unsigned int hash;
union {
size_t lnglen; /* length for long strings */
struct TString *hnext; /* linked list for hash table */
} u;
char contents[1];
} TString;
/*
** Get the actual string (array of bytes) from a 'TString'.
*/
#define getstr(ts) ((ts)->contents)
/* get the actual string (array of bytes) from a Lua value */
#define svalue(o) getstr(tsvalue(o))
/* get string length from 'TString *s' */
#define tsslen(s) ((s)->tt == LUA_VSHRSTR ? (s)->shrlen : (s)->u.lnglen)
/* get string length from 'TValue *o' */
#define vslen(o) tsslen(tsvalue(o))
/* }================================================================== */
/*
** {==================================================================
** Userdata
** ===================================================================
*/
/*
** Light userdata should be a variant of userdata, but for compatibility
** reasons they are also different types.
*/
#define LUA_VLIGHTUSERDATA makevariant(LUA_TLIGHTUSERDATA, 0)
#define LUA_VUSERDATA makevariant(LUA_TUSERDATA, 0)
#define ttislightuserdata(o) checktag((o), LUA_VLIGHTUSERDATA)
#define ttisfulluserdata(o) checktag((o), ctb(LUA_VUSERDATA))
#define pvalue(o) check_exp(ttislightuserdata(o), val_(o).p)
#define uvalue(o) check_exp(ttisfulluserdata(o), gco2u(val_(o).gc))
#define pvalueraw(v) ((v).p)
#define setpvalue(obj,x) \
{ TValue *io=(obj); val_(io).p=(x); settt_(io, LUA_VLIGHTUSERDATA); }
#define setuvalue(L,obj,x) \
{ TValue *io = (obj); Udata *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_VUSERDATA)); \
checkliveness(L,io); }
/* Ensures that addresses after this type are always fully aligned. */
typedef union UValue {
TValue uv;
LUAI_MAXALIGN; /* ensures maximum alignment for udata bytes */
} UValue;
/*
** Header for userdata with user values;
** memory area follows the end of this structure.
*/
typedef struct Udata {
CommonHeader;
unsigned short nuvalue; /* number of user values */
size_t len; /* number of bytes */
struct Table *metatable;
GCObject *gclist;
UValue uv[1]; /* user values */
} Udata;
/*
** Header for userdata with no user values. These userdata do not need
** to be gray during GC, and therefore do not need a 'gclist' field.
** To simplify, the code always use 'Udata' for both kinds of userdata,
** making sure it never accesses 'gclist' on userdata with no user values.
** This structure here is used only to compute the correct size for
** this representation. (The 'bindata' field in its end ensures correct
** alignment for binary data following this header.)
*/
typedef struct Udata0 {
CommonHeader;
unsigned short nuvalue; /* number of user values */
size_t len; /* number of bytes */
struct Table *metatable;
union {LUAI_MAXALIGN;} bindata;
} Udata0;
/* compute the offset of the memory area of a userdata */
#define udatamemoffset(nuv) \
((nuv) == 0 ? offsetof(Udata0, bindata) \
: offsetof(Udata, uv) + (sizeof(UValue) * (nuv)))
/* get the address of the memory block inside 'Udata' */
#define getudatamem(u) (cast_charp(u) + udatamemoffset((u)->nuvalue))
/* compute the size of a userdata */
#define sizeudata(nuv,nb) (udatamemoffset(nuv) + (nb))
/* }================================================================== */
/*
** {==================================================================
** Prototypes
** ===================================================================
*/
#define LUA_VPROTO makevariant(LUA_TPROTO, 0)
/*
** Description of an upvalue for function prototypes
*/
typedef struct Upvaldesc {
TString *name; /* upvalue name (for debug information) */
lu_byte instack; /* whether it is in stack (register) */
lu_byte idx; /* index of upvalue (in stack or in outer function's list) */
lu_byte kind; /* kind of corresponding variable */
} Upvaldesc;
/*
** Description of a local variable for function prototypes
** (used for debug information)
*/
typedef struct LocVar {
TString *varname;
int startpc; /* first point where variable is active */
int endpc; /* first point where variable is dead */
} LocVar;
/*
** Associates the absolute line source for a given instruction ('pc').
** The array 'lineinfo' gives, for each instruction, the difference in
** lines from the previous instruction. When that difference does not
** fit into a byte, Lua saves the absolute line for that instruction.
** (Lua also saves the absolute line periodically, to speed up the
** computation of a line number: we can use binary search in the
** absolute-line array, but we must traverse the 'lineinfo' array
** linearly to compute a line.)
*/
typedef struct AbsLineInfo {
int pc;
int line;
} AbsLineInfo;
/*
** Function Prototypes
*/
typedef struct Proto {
CommonHeader;
lu_byte numparams; /* number of fixed (named) parameters */
lu_byte is_vararg;
lu_byte maxstacksize; /* number of registers needed by this function */
int sizeupvalues; /* size of 'upvalues' */
int sizek; /* size of 'k' */
int sizecode;
int sizelineinfo;
int sizep; /* size of 'p' */
int sizelocvars;
int sizeabslineinfo; /* size of 'abslineinfo' */
int linedefined; /* debug information */
int lastlinedefined; /* debug information */
TValue *k; /* constants used by the function */
Instruction *code; /* opcodes */
struct Proto **p; /* functions defined inside the function */
Upvaldesc *upvalues; /* upvalue information */
ls_byte *lineinfo; /* information about source lines (debug information) */
AbsLineInfo *abslineinfo; /* idem */
LocVar *locvars; /* information about local variables (debug information) */
TString *source; /* used for debug information */
GCObject *gclist;
} Proto;
/* }================================================================== */
/*
** {==================================================================
** Closures
** ===================================================================
*/
#define LUA_VUPVAL makevariant(LUA_TUPVAL, 0)
/* Variant tags for functions */
#define LUA_VLCL makevariant(LUA_TFUNCTION, 0) /* Lua closure */
#define LUA_VLCF makevariant(LUA_TFUNCTION, 1) /* light C function */
#define LUA_VCCL makevariant(LUA_TFUNCTION, 2) /* C closure */
#define ttisfunction(o) checktype(o, LUA_TFUNCTION)
#define ttisclosure(o) ((rawtt(o) & 0x1F) == LUA_VLCL)
#define ttisLclosure(o) checktag((o), ctb(LUA_VLCL))
#define ttislcf(o) checktag((o), LUA_VLCF)
#define ttisCclosure(o) checktag((o), ctb(LUA_VCCL))
#define isLfunction(o) ttisLclosure(o)
#define clvalue(o) check_exp(ttisclosure(o), gco2cl(val_(o).gc))
#define clLvalue(o) check_exp(ttisLclosure(o), gco2lcl(val_(o).gc))
#define fvalue(o) check_exp(ttislcf(o), val_(o).f)
#define clCvalue(o) check_exp(ttisCclosure(o), gco2ccl(val_(o).gc))
#define fvalueraw(v) ((v).f)
#define setclLvalue(L,obj,x) \
{ TValue *io = (obj); LClosure *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_VLCL)); \
checkliveness(L,io); }
#define setclLvalue2s(L,o,cl) setclLvalue(L,s2v(o),cl)
#define setfvalue(obj,x) \
{ TValue *io=(obj); val_(io).f=(x); settt_(io, LUA_VLCF); }
#define setclCvalue(L,obj,x) \
{ TValue *io = (obj); CClosure *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_VCCL)); \
checkliveness(L,io); }
/*
** Upvalues for Lua closures
*/
typedef struct UpVal {
CommonHeader;
lu_byte tbc; /* true if it represents a to-be-closed variable */
TValue *v; /* points to stack or to its own value */
union {
struct { /* (when open) */
struct UpVal *next; /* linked list */
struct UpVal **previous;
} open;
TValue value; /* the value (when closed) */
} u;
} UpVal;
#define ClosureHeader \
CommonHeader; lu_byte nupvalues; GCObject *gclist
typedef struct CClosure {
ClosureHeader;
lua_CFunction f;
TValue upvalue[1]; /* list of upvalues */
} CClosure;
typedef struct LClosure {
ClosureHeader;
struct Proto *p;
UpVal *upvals[1]; /* list of upvalues */
} LClosure;
typedef union Closure {
CClosure c;
LClosure l;
} Closure;
#define getproto(o) (clLvalue(o)->p)
/* }================================================================== */
/*
** {==================================================================
** Tables
** ===================================================================
*/
#define LUA_VTABLE makevariant(LUA_TTABLE, 0)
#define ttistable(o) checktag((o), ctb(LUA_VTABLE))
#define hvalue(o) check_exp(ttistable(o), gco2t(val_(o).gc))
#define sethvalue(L,obj,x) \
{ TValue *io = (obj); Table *x_ = (x); \
val_(io).gc = obj2gco(x_); settt_(io, ctb(LUA_VTABLE)); \
checkliveness(L,io); }
#define sethvalue2s(L,o,h) sethvalue(L,s2v(o),h)
/*
** Nodes for Hash tables: A pack of two TValue's (key-value pairs)
** plus a 'next' field to link colliding entries. The distribution
** of the key's fields ('key_tt' and 'key_val') not forming a proper
** 'TValue' allows for a smaller size for 'Node' both in 4-byte
** and 8-byte alignments.
*/
typedef union Node {
struct NodeKey {
TValuefields; /* fields for value */
lu_byte key_tt; /* key type */
int next; /* for chaining */
Value key_val; /* key value */
} u;
TValue i_val; /* direct access to node's value as a proper 'TValue' */
} Node;
/* copy a value into a key */
#define setnodekey(L,node,obj) \
{ Node *n_=(node); const TValue *io_=(obj); \
n_->u.key_val = io_->value_; n_->u.key_tt = io_->tt_; \
checkliveness(L,io_); }
/* copy a value from a key */
#define getnodekey(L,obj,node) \
{ TValue *io_=(obj); const Node *n_=(node); \
io_->value_ = n_->u.key_val; io_->tt_ = n_->u.key_tt; \
checkliveness(L,io_); }
/*
** About 'alimit': if 'isrealasize(t)' is true, then 'alimit' is the
** real size of 'array'. Otherwise, the real size of 'array' is the
** smallest power of two not smaller than 'alimit' (or zero iff 'alimit'
** is zero); 'alimit' is then used as a hint for #t.
*/
#define BITRAS (1 << 7)
#define isrealasize(t) (!((t)->marked & BITRAS))
#define setrealasize(t) ((t)->marked &= cast_byte(~BITRAS))
#define setnorealasize(t) ((t)->marked |= BITRAS)
typedef struct Table {
CommonHeader;
lu_byte flags; /* 1<<p means tagmethod(p) is not present */
lu_byte lsizenode; /* log2 of size of 'node' array */
unsigned int alimit; /* "limit" of 'array' array */
TValue *array; /* array part */
Node *node;
Node *lastfree; /* any free position is before this position */
struct Table *metatable;
GCObject *gclist;
} Table;
/*
** Macros to manipulate keys inserted in nodes
*/
#define keytt(node) ((node)->u.key_tt)
#define keyval(node) ((node)->u.key_val)
#define keyisnil(node) (keytt(node) == LUA_TNIL)
#define keyisinteger(node) (keytt(node) == LUA_VNUMINT)
#define keyival(node) (keyval(node).i)
#define keyisshrstr(node) (keytt(node) == ctb(LUA_VSHRSTR))
#define keystrval(node) (gco2ts(keyval(node).gc))
#define setnilkey(node) (keytt(node) = LUA_TNIL)
#define keyiscollectable(n) (keytt(n) & BIT_ISCOLLECTABLE)
#define gckey(n) (keyval(n).gc)
#define gckeyN(n) (keyiscollectable(n) ? gckey(n) : NULL)
/*
** Use a "nil table" to mark dead keys in a table. Those keys serve
** to keep space for removed entries, which may still be part of
** chains. Note that the 'keytt' does not have the BIT_ISCOLLECTABLE
** set, so these values are considered not collectable and are different
** from any valid value.
*/
#define setdeadkey(n) (keytt(n) = LUA_TTABLE, gckey(n) = NULL)
/* }================================================================== */
/*
** 'module' operation for hashing (size is always a power of 2)
*/
#define lmod(s,size) \
(check_exp((size&(size-1))==0, (cast_int((s) & ((size)-1)))))
#define twoto(x) (1<<(x))
#define sizenode(t) (twoto((t)->lsizenode))
/* size of buffer for 'luaO_utf8esc' function */
#define UTF8BUFFSZ 8
LUAI_FUNC int luaO_utf8esc (char *buff, unsigned long x);
LUAI_FUNC int luaO_ceillog2 (unsigned int x);
LUAI_FUNC int luaO_rawarith (lua_State *L, int op, const TValue *p1,
const TValue *p2, TValue *res);
LUAI_FUNC void luaO_arith (lua_State *L, int op, const TValue *p1,
const TValue *p2, StkId res);
LUAI_FUNC size_t luaO_str2num (const char *s, TValue *o);
LUAI_FUNC int luaO_hexavalue (int c);
LUAI_FUNC void luaO_tostring (lua_State *L, TValue *obj);
LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
va_list argp);
LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t srclen);
#endif

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/*
** $Id: lopcodes.c $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#define lopcodes_c
#define LUA_CORE
#include "lprefix.h"
#include "lopcodes.h"
/* ORDER OP */
LUAI_DDEF const lu_byte luaP_opmodes[NUM_OPCODES] = {
/* MM OT IT T A mode opcode */
opmode(0, 0, 0, 0, 1, iABC) /* OP_MOVE */
,opmode(0, 0, 0, 0, 1, iAsBx) /* OP_LOADI */
,opmode(0, 0, 0, 0, 1, iAsBx) /* OP_LOADF */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_LOADK */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_LOADKX */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADFALSE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LFALSESKIP */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADTRUE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LOADNIL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETUPVAL */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETUPVAL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETTABUP */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETTABLE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_GETFIELD */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETTABUP */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETTABLE */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETI */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_SETFIELD */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_NEWTABLE */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SELF */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_ADDI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_ADDK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SUBK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MULK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MODK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_POWK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_DIVK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_IDIVK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BANDK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BORK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BXORK */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHRI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHLI */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_ADD */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SUB */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MUL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_MOD */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_POW */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_DIV */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_IDIV */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BAND */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BOR */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BXOR */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHL */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_SHR */
,opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBIN */
,opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBINI*/
,opmode(1, 0, 0, 0, 0, iABC) /* OP_MMBINK*/
,opmode(0, 0, 0, 0, 1, iABC) /* OP_UNM */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_BNOT */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_NOT */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_LEN */
,opmode(0, 0, 0, 0, 1, iABC) /* OP_CONCAT */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_CLOSE */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_TBC */
,opmode(0, 0, 0, 0, 0, isJ) /* OP_JMP */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_EQ */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LT */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LE */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_EQK */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_EQI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LTI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_LEI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_GTI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_GEI */
,opmode(0, 0, 0, 1, 0, iABC) /* OP_TEST */
,opmode(0, 0, 0, 1, 1, iABC) /* OP_TESTSET */
,opmode(0, 1, 1, 0, 1, iABC) /* OP_CALL */
,opmode(0, 1, 1, 0, 1, iABC) /* OP_TAILCALL */
,opmode(0, 0, 1, 0, 0, iABC) /* OP_RETURN */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_RETURN0 */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_RETURN1 */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_FORLOOP */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_FORPREP */
,opmode(0, 0, 0, 0, 0, iABx) /* OP_TFORPREP */
,opmode(0, 0, 0, 0, 0, iABC) /* OP_TFORCALL */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_TFORLOOP */
,opmode(0, 0, 1, 0, 0, iABC) /* OP_SETLIST */
,opmode(0, 0, 0, 0, 1, iABx) /* OP_CLOSURE */
,opmode(0, 1, 0, 0, 1, iABC) /* OP_VARARG */
,opmode(0, 0, 1, 0, 1, iABC) /* OP_VARARGPREP */
,opmode(0, 0, 0, 0, 0, iAx) /* OP_EXTRAARG */
};

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/*
** $Id: lopcodes.h $
** Opcodes for Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lopcodes_h
#define lopcodes_h
#include "llimits.h"
/*===========================================================================
We assume that instructions are unsigned 32-bit integers.
All instructions have an opcode in the first 7 bits.
Instructions can have the following formats:
3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0
1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
iABC C(8) | B(8) |k| A(8) | Op(7) |
iABx Bx(17) | A(8) | Op(7) |
iAsBx sBx (signed)(17) | A(8) | Op(7) |
iAx Ax(25) | Op(7) |
isJ sJ(25) | Op(7) |
A signed argument is represented in excess K: the represented value is
the written unsigned value minus K, where K is half the maximum for the
corresponding unsigned argument.
===========================================================================*/
enum OpMode {iABC, iABx, iAsBx, iAx, isJ}; /* basic instruction formats */
/*
** size and position of opcode arguments.
*/
#define SIZE_C 8
#define SIZE_B 8
#define SIZE_Bx (SIZE_C + SIZE_B + 1)
#define SIZE_A 8
#define SIZE_Ax (SIZE_Bx + SIZE_A)
#define SIZE_sJ (SIZE_Bx + SIZE_A)
#define SIZE_OP 7
#define POS_OP 0
#define POS_A (POS_OP + SIZE_OP)
#define POS_k (POS_A + SIZE_A)
#define POS_B (POS_k + 1)
#define POS_C (POS_B + SIZE_B)
#define POS_Bx POS_k
#define POS_Ax POS_A
#define POS_sJ POS_A
/*
** limits for opcode arguments.
** we use (signed) 'int' to manipulate most arguments,
** so they must fit in ints.
*/
/* Check whether type 'int' has at least 'b' bits ('b' < 32) */
#define L_INTHASBITS(b) ((UINT_MAX >> ((b) - 1)) >= 1)
#if L_INTHASBITS(SIZE_Bx)
#define MAXARG_Bx ((1<<SIZE_Bx)-1)
#else
#define MAXARG_Bx MAX_INT
#endif
#define OFFSET_sBx (MAXARG_Bx>>1) /* 'sBx' is signed */
#if L_INTHASBITS(SIZE_Ax)
#define MAXARG_Ax ((1<<SIZE_Ax)-1)
#else
#define MAXARG_Ax MAX_INT
#endif
#if L_INTHASBITS(SIZE_sJ)
#define MAXARG_sJ ((1 << SIZE_sJ) - 1)
#else
#define MAXARG_sJ MAX_INT
#endif
#define OFFSET_sJ (MAXARG_sJ >> 1)
#define MAXARG_A ((1<<SIZE_A)-1)
#define MAXARG_B ((1<<SIZE_B)-1)
#define MAXARG_C ((1<<SIZE_C)-1)
#define OFFSET_sC (MAXARG_C >> 1)
#define int2sC(i) ((i) + OFFSET_sC)
#define sC2int(i) ((i) - OFFSET_sC)
/* creates a mask with 'n' 1 bits at position 'p' */
#define MASK1(n,p) ((~((~(Instruction)0)<<(n)))<<(p))
/* creates a mask with 'n' 0 bits at position 'p' */
#define MASK0(n,p) (~MASK1(n,p))
/*
** the following macros help to manipulate instructions
*/
#define GET_OPCODE(i) (cast(OpCode, ((i)>>POS_OP) & MASK1(SIZE_OP,0)))
#define SET_OPCODE(i,o) ((i) = (((i)&MASK0(SIZE_OP,POS_OP)) | \
((cast(Instruction, o)<<POS_OP)&MASK1(SIZE_OP,POS_OP))))
#define checkopm(i,m) (getOpMode(GET_OPCODE(i)) == m)
#define getarg(i,pos,size) (cast_int(((i)>>(pos)) & MASK1(size,0)))
#define setarg(i,v,pos,size) ((i) = (((i)&MASK0(size,pos)) | \
((cast(Instruction, v)<<pos)&MASK1(size,pos))))
#define GETARG_A(i) getarg(i, POS_A, SIZE_A)
#define SETARG_A(i,v) setarg(i, v, POS_A, SIZE_A)
#define GETARG_B(i) check_exp(checkopm(i, iABC), getarg(i, POS_B, SIZE_B))
#define GETARG_sB(i) sC2int(GETARG_B(i))
#define SETARG_B(i,v) setarg(i, v, POS_B, SIZE_B)
#define GETARG_C(i) check_exp(checkopm(i, iABC), getarg(i, POS_C, SIZE_C))
#define GETARG_sC(i) sC2int(GETARG_C(i))
#define SETARG_C(i,v) setarg(i, v, POS_C, SIZE_C)
#define TESTARG_k(i) check_exp(checkopm(i, iABC), (cast_int(((i) & (1u << POS_k)))))
#define GETARG_k(i) check_exp(checkopm(i, iABC), getarg(i, POS_k, 1))
#define SETARG_k(i,v) setarg(i, v, POS_k, 1)
#define GETARG_Bx(i) check_exp(checkopm(i, iABx), getarg(i, POS_Bx, SIZE_Bx))
#define SETARG_Bx(i,v) setarg(i, v, POS_Bx, SIZE_Bx)
#define GETARG_Ax(i) check_exp(checkopm(i, iAx), getarg(i, POS_Ax, SIZE_Ax))
#define SETARG_Ax(i,v) setarg(i, v, POS_Ax, SIZE_Ax)
#define GETARG_sBx(i) \
check_exp(checkopm(i, iAsBx), getarg(i, POS_Bx, SIZE_Bx) - OFFSET_sBx)
#define SETARG_sBx(i,b) SETARG_Bx((i),cast_uint((b)+OFFSET_sBx))
#define GETARG_sJ(i) \
check_exp(checkopm(i, isJ), getarg(i, POS_sJ, SIZE_sJ) - OFFSET_sJ)
#define SETARG_sJ(i,j) \
setarg(i, cast_uint((j)+OFFSET_sJ), POS_sJ, SIZE_sJ)
#define CREATE_ABCk(o,a,b,c,k) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, b)<<POS_B) \
| (cast(Instruction, c)<<POS_C) \
| (cast(Instruction, k)<<POS_k))
#define CREATE_ABx(o,a,bc) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_A) \
| (cast(Instruction, bc)<<POS_Bx))
#define CREATE_Ax(o,a) ((cast(Instruction, o)<<POS_OP) \
| (cast(Instruction, a)<<POS_Ax))
#define CREATE_sJ(o,j,k) ((cast(Instruction, o) << POS_OP) \
| (cast(Instruction, j) << POS_sJ) \
| (cast(Instruction, k) << POS_k))
#if !defined(MAXINDEXRK) /* (for debugging only) */
#define MAXINDEXRK MAXARG_B
#endif
/*
** invalid register that fits in 8 bits
*/
#define NO_REG MAXARG_A
/*
** R[x] - register
** K[x] - constant (in constant table)
** RK(x) == if k(i) then K[x] else R[x]
*/
/*
** grep "ORDER OP" if you change these enums
*/
typedef enum {
/*----------------------------------------------------------------------
name args description
------------------------------------------------------------------------*/
OP_MOVE,/* A B R[A] := R[B] */
OP_LOADI,/* A sBx R[A] := sBx */
OP_LOADF,/* A sBx R[A] := (lua_Number)sBx */
OP_LOADK,/* A Bx R[A] := K[Bx] */
OP_LOADKX,/* A R[A] := K[extra arg] */
OP_LOADFALSE,/* A R[A] := false */
OP_LFALSESKIP,/*A R[A] := false; pc++ */
OP_LOADTRUE,/* A R[A] := true */
OP_LOADNIL,/* A B R[A], R[A+1], ..., R[A+B] := nil */
OP_GETUPVAL,/* A B R[A] := UpValue[B] */
OP_SETUPVAL,/* A B UpValue[B] := R[A] */
OP_GETTABUP,/* A B C R[A] := UpValue[B][K[C]:string] */
OP_GETTABLE,/* A B C R[A] := R[B][R[C]] */
OP_GETI,/* A B C R[A] := R[B][C] */
OP_GETFIELD,/* A B C R[A] := R[B][K[C]:string] */
OP_SETTABUP,/* A B C UpValue[A][K[B]:string] := RK(C) */
OP_SETTABLE,/* A B C R[A][R[B]] := RK(C) */
OP_SETI,/* A B C R[A][B] := RK(C) */
OP_SETFIELD,/* A B C R[A][K[B]:string] := RK(C) */
OP_NEWTABLE,/* A B C k R[A] := {} */
OP_SELF,/* A B C R[A+1] := R[B]; R[A] := R[B][RK(C):string] */
OP_ADDI,/* A B sC R[A] := R[B] + sC */
OP_ADDK,/* A B C R[A] := R[B] + K[C] */
OP_SUBK,/* A B C R[A] := R[B] - K[C] */
OP_MULK,/* A B C R[A] := R[B] * K[C] */
OP_MODK,/* A B C R[A] := R[B] % K[C] */
OP_POWK,/* A B C R[A] := R[B] ^ K[C] */
OP_DIVK,/* A B C R[A] := R[B] / K[C] */
OP_IDIVK,/* A B C R[A] := R[B] // K[C] */
OP_BANDK,/* A B C R[A] := R[B] & K[C]:integer */
OP_BORK,/* A B C R[A] := R[B] | K[C]:integer */
OP_BXORK,/* A B C R[A] := R[B] ~ K[C]:integer */
OP_SHRI,/* A B sC R[A] := R[B] >> sC */
OP_SHLI,/* A B sC R[A] := sC << R[B] */
OP_ADD,/* A B C R[A] := R[B] + R[C] */
OP_SUB,/* A B C R[A] := R[B] - R[C] */
OP_MUL,/* A B C R[A] := R[B] * R[C] */
OP_MOD,/* A B C R[A] := R[B] % R[C] */
OP_POW,/* A B C R[A] := R[B] ^ R[C] */
OP_DIV,/* A B C R[A] := R[B] / R[C] */
OP_IDIV,/* A B C R[A] := R[B] // R[C] */
OP_BAND,/* A B C R[A] := R[B] & R[C] */
OP_BOR,/* A B C R[A] := R[B] | R[C] */
OP_BXOR,/* A B C R[A] := R[B] ~ R[C] */
OP_SHL,/* A B C R[A] := R[B] << R[C] */
OP_SHR,/* A B C R[A] := R[B] >> R[C] */
OP_MMBIN,/* A B C call C metamethod over R[A] and R[B] */
OP_MMBINI,/* A sB C k call C metamethod over R[A] and sB */
OP_MMBINK,/* A B C k call C metamethod over R[A] and K[B] */
OP_UNM,/* A B R[A] := -R[B] */
OP_BNOT,/* A B R[A] := ~R[B] */
OP_NOT,/* A B R[A] := not R[B] */
OP_LEN,/* A B R[A] := length of R[B] */
OP_CONCAT,/* A B R[A] := R[A].. ... ..R[A + B - 1] */
OP_CLOSE,/* A close all upvalues >= R[A] */
OP_TBC,/* A mark variable A "to be closed" */
OP_JMP,/* sJ pc += sJ */
OP_EQ,/* A B k if ((R[A] == R[B]) ~= k) then pc++ */
OP_LT,/* A B k if ((R[A] < R[B]) ~= k) then pc++ */
OP_LE,/* A B k if ((R[A] <= R[B]) ~= k) then pc++ */
OP_EQK,/* A B k if ((R[A] == K[B]) ~= k) then pc++ */
OP_EQI,/* A sB k if ((R[A] == sB) ~= k) then pc++ */
OP_LTI,/* A sB k if ((R[A] < sB) ~= k) then pc++ */
OP_LEI,/* A sB k if ((R[A] <= sB) ~= k) then pc++ */
OP_GTI,/* A sB k if ((R[A] > sB) ~= k) then pc++ */
OP_GEI,/* A sB k if ((R[A] >= sB) ~= k) then pc++ */
OP_TEST,/* A k if (not R[A] == k) then pc++ */
OP_TESTSET,/* A B k if (not R[B] == k) then pc++ else R[A] := R[B] */
OP_CALL,/* A B C R[A], ... ,R[A+C-2] := R[A](R[A+1], ... ,R[A+B-1]) */
OP_TAILCALL,/* A B C k return R[A](R[A+1], ... ,R[A+B-1]) */
OP_RETURN,/* A B C k return R[A], ... ,R[A+B-2] (see note) */
OP_RETURN0,/* return */
OP_RETURN1,/* A return R[A] */
OP_FORLOOP,/* A Bx update counters; if loop continues then pc-=Bx; */
OP_FORPREP,/* A Bx <check values and prepare counters>;
if not to run then pc+=Bx+1; */
OP_TFORPREP,/* A Bx create upvalue for R[A + 3]; pc+=Bx */
OP_TFORCALL,/* A C R[A+4], ... ,R[A+3+C] := R[A](R[A+1], R[A+2]); */
OP_TFORLOOP,/* A Bx if R[A+2] ~= nil then { R[A]=R[A+2]; pc -= Bx } */
OP_SETLIST,/* A B C k R[A][(C-1)*FPF+i] := R[A+i], 1 <= i <= B */
OP_CLOSURE,/* A Bx R[A] := closure(KPROTO[Bx]) */
OP_VARARG,/* A C R[A], R[A+1], ..., R[A+C-2] = vararg */
OP_VARARGPREP,/*A (adjust vararg parameters) */
OP_EXTRAARG/* Ax extra (larger) argument for previous opcode */
} OpCode;
#define NUM_OPCODES ((int)(OP_EXTRAARG) + 1)
/*===========================================================================
Notes:
(*) In OP_CALL, if (B == 0) then B = top - A. If (C == 0), then
'top' is set to last_result+1, so next open instruction (OP_CALL,
OP_RETURN*, OP_SETLIST) may use 'top'.
(*) In OP_VARARG, if (C == 0) then use actual number of varargs and
set top (like in OP_CALL with C == 0).
(*) In OP_RETURN, if (B == 0) then return up to 'top'.
(*) In OP_LOADKX and OP_NEWTABLE, the next instruction is always
OP_EXTRAARG.
(*) In OP_SETLIST, if (B == 0) then real B = 'top'; if k, then
real C = EXTRAARG _ C (the bits of EXTRAARG concatenated with the
bits of C).
(*) In OP_NEWTABLE, B is log2 of the hash size (which is always a
power of 2) plus 1, or zero for size zero. If not k, the array size
is C. Otherwise, the array size is EXTRAARG _ C.
(*) For comparisons, k specifies what condition the test should accept
(true or false).
(*) In OP_MMBINI/OP_MMBINK, k means the arguments were flipped
(the constant is the first operand).
(*) All 'skips' (pc++) assume that next instruction is a jump.
(*) In instructions OP_RETURN/OP_TAILCALL, 'k' specifies that the
function builds upvalues, which may need to be closed. C > 0 means
the function is vararg, so that its 'func' must be corrected before
returning; in this case, (C - 1) is its number of fixed parameters.
(*) In comparisons with an immediate operand, C signals whether the
original operand was a float. (It must be corrected in case of
metamethods.)
===========================================================================*/
/*
** masks for instruction properties. The format is:
** bits 0-2: op mode
** bit 3: instruction set register A
** bit 4: operator is a test (next instruction must be a jump)
** bit 5: instruction uses 'L->top' set by previous instruction (when B == 0)
** bit 6: instruction sets 'L->top' for next instruction (when C == 0)
** bit 7: instruction is an MM instruction (call a metamethod)
*/
LUAI_DDEC(const lu_byte luaP_opmodes[NUM_OPCODES];)
#define getOpMode(m) (cast(enum OpMode, luaP_opmodes[m] & 7))
#define testAMode(m) (luaP_opmodes[m] & (1 << 3))
#define testTMode(m) (luaP_opmodes[m] & (1 << 4))
#define testITMode(m) (luaP_opmodes[m] & (1 << 5))
#define testOTMode(m) (luaP_opmodes[m] & (1 << 6))
#define testMMMode(m) (luaP_opmodes[m] & (1 << 7))
/* "out top" (set top for next instruction) */
#define isOT(i) \
((testOTMode(GET_OPCODE(i)) && GETARG_C(i) == 0) || \
GET_OPCODE(i) == OP_TAILCALL)
/* "in top" (uses top from previous instruction) */
#define isIT(i) (testITMode(GET_OPCODE(i)) && GETARG_B(i) == 0)
#define opmode(mm,ot,it,t,a,m) \
(((mm) << 7) | ((ot) << 6) | ((it) << 5) | ((t) << 4) | ((a) << 3) | (m))
/* number of list items to accumulate before a SETLIST instruction */
#define LFIELDS_PER_FLUSH 50
#endif

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@ -0,0 +1,103 @@
/*
** $Id: lopnames.h $
** Opcode names
** See Copyright Notice in lua.h
*/
#if !defined(lopnames_h)
#define lopnames_h
#include <stddef.h>
/* ORDER OP */
static const char *const opnames[] = {
"MOVE",
"LOADI",
"LOADF",
"LOADK",
"LOADKX",
"LOADFALSE",
"LFALSESKIP",
"LOADTRUE",
"LOADNIL",
"GETUPVAL",
"SETUPVAL",
"GETTABUP",
"GETTABLE",
"GETI",
"GETFIELD",
"SETTABUP",
"SETTABLE",
"SETI",
"SETFIELD",
"NEWTABLE",
"SELF",
"ADDI",
"ADDK",
"SUBK",
"MULK",
"MODK",
"POWK",
"DIVK",
"IDIVK",
"BANDK",
"BORK",
"BXORK",
"SHRI",
"SHLI",
"ADD",
"SUB",
"MUL",
"MOD",
"POW",
"DIV",
"IDIV",
"BAND",
"BOR",
"BXOR",
"SHL",
"SHR",
"MMBIN",
"MMBINI",
"MMBINK",
"UNM",
"BNOT",
"NOT",
"LEN",
"CONCAT",
"CLOSE",
"TBC",
"JMP",
"EQ",
"LT",
"LE",
"EQK",
"EQI",
"LTI",
"LEI",
"GTI",
"GEI",
"TEST",
"TESTSET",
"CALL",
"TAILCALL",
"RETURN",
"RETURN0",
"RETURN1",
"FORLOOP",
"FORPREP",
"TFORPREP",
"TFORCALL",
"TFORLOOP",
"SETLIST",
"CLOSURE",
"VARARG",
"VARARGPREP",
"EXTRAARG",
NULL
};
#endif

115
lua-5.3.3/src/loslib.c → lua-5.4.0/src/loslib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: loslib.c,v 1.64 2016/04/18 13:06:55 roberto Exp $ ** $Id: loslib.c $
** Standard Operating System library ** Standard Operating System library
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -30,16 +30,16 @@
*/ */
#if !defined(LUA_STRFTIMEOPTIONS) /* { */ #if !defined(LUA_STRFTIMEOPTIONS) /* { */
/* options for ANSI C 89 */ /* options for ANSI C 89 (only 1-char options) */
#define L_STRFTIMEC89 "aAbBcdHIjmMpSUwWxXyYZ%" #define L_STRFTIMEC89 "aAbBcdHIjmMpSUwWxXyYZ%"
/* options for ISO C 99 and POSIX */ /* options for ISO C 99 and POSIX */
#define L_STRFTIMEC99 "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%" \ #define L_STRFTIMEC99 "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%" \
"||" "EcECExEXEyEY" "OdOeOHOIOmOMOSOuOUOVOwOWOy" "||" "EcECExEXEyEY" "OdOeOHOIOmOMOSOuOUOVOwOWOy" /* two-char options */
/* options for Windows */ /* options for Windows */
#define L_STRFTIMEWIN "aAbBcdHIjmMpSUwWxXyYzZ%" \ #define L_STRFTIMEWIN "aAbBcdHIjmMpSUwWxXyYzZ%" \
"||" "#c#x#d#H#I#j#m#M#S#U#w#W#y#Y" "||" "#c#x#d#H#I#j#m#M#S#U#w#W#y#Y" /* two-char options */
#if defined(LUA_USE_WINDOWS) #if defined(LUA_USE_WINDOWS)
#define LUA_STRFTIMEOPTIONS L_STRFTIMEWIN #define LUA_STRFTIMEOPTIONS L_STRFTIMEWIN
@ -59,18 +59,20 @@
** =================================================================== ** ===================================================================
*/ */
#if !defined(l_time_t) /* { */
/* /*
** type to represent time_t in Lua ** type to represent time_t in Lua
*/ */
#if !defined(LUA_NUMTIME) /* { */
#define l_timet lua_Integer #define l_timet lua_Integer
#define l_pushtime(L,t) lua_pushinteger(L,(lua_Integer)(t)) #define l_pushtime(L,t) lua_pushinteger(L,(lua_Integer)(t))
#define l_gettime(L,arg) luaL_checkinteger(L, arg)
static time_t l_checktime (lua_State *L, int arg) { #else /* }{ */
lua_Integer t = luaL_checkinteger(L, arg);
luaL_argcheck(L, (time_t)t == t, arg, "time out-of-bounds"); #define l_timet lua_Number
return (time_t)t; #define l_pushtime(L,t) lua_pushnumber(L,(lua_Number)(t))
} #define l_gettime(L,arg) luaL_checknumber(L, arg)
#endif /* } */ #endif /* } */
@ -90,7 +92,7 @@ static time_t l_checktime (lua_State *L, int arg) {
/* ISO C definitions */ /* ISO C definitions */
#define l_gmtime(t,r) ((void)(r)->tm_sec, gmtime(t)) #define l_gmtime(t,r) ((void)(r)->tm_sec, gmtime(t))
#define l_localtime(t,r) ((void)(r)->tm_sec, localtime(t)) #define l_localtime(t,r) ((void)(r)->tm_sec, localtime(t))
#endif /* } */ #endif /* } */
@ -137,10 +139,11 @@ static time_t l_checktime (lua_State *L, int arg) {
static int os_execute (lua_State *L) { static int os_execute (lua_State *L) {
const char *cmd = luaL_optstring(L, 1, NULL); const char *cmd = luaL_optstring(L, 1, NULL);
int stat = system(cmd); int stat;
errno = 0;
stat = system(cmd);
if (cmd != NULL) if (cmd != NULL)
return luaL_execresult(L, stat); return luaL_execresult(L, stat);
else { else {
@ -194,11 +197,25 @@ static int os_clock (lua_State *L) {
** ======================================================= ** =======================================================
*/ */
static void setfield (lua_State *L, const char *key, int value) { /*
lua_pushinteger(L, value); ** About the overflow check: an overflow cannot occur when time
** is represented by a lua_Integer, because either lua_Integer is
** large enough to represent all int fields or it is not large enough
** to represent a time that cause a field to overflow. However, if
** times are represented as doubles and lua_Integer is int, then the
** time 0x1.e1853b0d184f6p+55 would cause an overflow when adding 1900
** to compute the year.
*/
static void setfield (lua_State *L, const char *key, int value, int delta) {
#if (defined(LUA_NUMTIME) && LUA_MAXINTEGER <= INT_MAX)
if (value > LUA_MAXINTEGER - delta)
luaL_error(L, "field '%s' is out-of-bound", key);
#endif
lua_pushinteger(L, (lua_Integer)value + delta);
lua_setfield(L, -2, key); lua_setfield(L, -2, key);
} }
static void setboolfield (lua_State *L, const char *key, int value) { static void setboolfield (lua_State *L, const char *key, int value) {
if (value < 0) /* undefined? */ if (value < 0) /* undefined? */
return; /* does not set field */ return; /* does not set field */
@ -211,14 +228,14 @@ static void setboolfield (lua_State *L, const char *key, int value) {
** Set all fields from structure 'tm' in the table on top of the stack ** Set all fields from structure 'tm' in the table on top of the stack
*/ */
static void setallfields (lua_State *L, struct tm *stm) { static void setallfields (lua_State *L, struct tm *stm) {
setfield(L, "sec", stm->tm_sec); setfield(L, "year", stm->tm_year, 1900);
setfield(L, "min", stm->tm_min); setfield(L, "month", stm->tm_mon, 1);
setfield(L, "hour", stm->tm_hour); setfield(L, "day", stm->tm_mday, 0);
setfield(L, "day", stm->tm_mday); setfield(L, "hour", stm->tm_hour, 0);
setfield(L, "month", stm->tm_mon + 1); setfield(L, "min", stm->tm_min, 0);
setfield(L, "year", stm->tm_year + 1900); setfield(L, "sec", stm->tm_sec, 0);
setfield(L, "wday", stm->tm_wday + 1); setfield(L, "yday", stm->tm_yday, 1);
setfield(L, "yday", stm->tm_yday + 1); setfield(L, "wday", stm->tm_wday, 1);
setboolfield(L, "isdst", stm->tm_isdst); setboolfield(L, "isdst", stm->tm_isdst);
} }
@ -231,11 +248,6 @@ static int getboolfield (lua_State *L, const char *key) {
} }
/* maximum value for date fields (to avoid arithmetic overflows with 'int') */
#if !defined(L_MAXDATEFIELD)
#define L_MAXDATEFIELD (INT_MAX / 2)
#endif
static int getfield (lua_State *L, const char *key, int d, int delta) { static int getfield (lua_State *L, const char *key, int d, int delta) {
int isnum; int isnum;
int t = lua_getfield(L, -1, key); /* get field and its type */ int t = lua_getfield(L, -1, key); /* get field and its type */
@ -248,7 +260,9 @@ static int getfield (lua_State *L, const char *key, int d, int delta) {
res = d; res = d;
} }
else { else {
if (!(-L_MAXDATEFIELD <= res && res <= L_MAXDATEFIELD)) /* unsigned avoids overflow when lua_Integer has 32 bits */
if (!(res >= 0 ? (lua_Unsigned)res <= (lua_Unsigned)INT_MAX + delta
: (lua_Integer)INT_MIN + delta <= res))
return luaL_error(L, "field '%s' is out-of-bound", key); return luaL_error(L, "field '%s' is out-of-bound", key);
res -= delta; res -= delta;
} }
@ -257,12 +271,13 @@ static int getfield (lua_State *L, const char *key, int d, int delta) {
} }
static const char *checkoption (lua_State *L, const char *conv, char *buff) { static const char *checkoption (lua_State *L, const char *conv,
const char *option; ptrdiff_t convlen, char *buff) {
int oplen = 1; const char *option = LUA_STRFTIMEOPTIONS;
for (option = LUA_STRFTIMEOPTIONS; *option != '\0'; option += oplen) { int oplen = 1; /* length of options being checked */
for (; *option != '\0' && oplen <= convlen; option += oplen) {
if (*option == '|') /* next block? */ if (*option == '|') /* next block? */
oplen++; /* next length */ oplen++; /* will check options with next length (+1) */
else if (memcmp(conv, option, oplen) == 0) { /* match? */ else if (memcmp(conv, option, oplen) == 0) { /* match? */
memcpy(buff, conv, oplen); /* copy valid option to buffer */ memcpy(buff, conv, oplen); /* copy valid option to buffer */
buff[oplen] = '\0'; buff[oplen] = '\0';
@ -275,13 +290,22 @@ static const char *checkoption (lua_State *L, const char *conv, char *buff) {
} }
static time_t l_checktime (lua_State *L, int arg) {
l_timet t = l_gettime(L, arg);
luaL_argcheck(L, (time_t)t == t, arg, "time out-of-bounds");
return (time_t)t;
}
/* maximum size for an individual 'strftime' item */ /* maximum size for an individual 'strftime' item */
#define SIZETIMEFMT 250 #define SIZETIMEFMT 250
static int os_date (lua_State *L) { static int os_date (lua_State *L) {
const char *s = luaL_optstring(L, 1, "%c"); size_t slen;
const char *s = luaL_optlstring(L, 1, "%c", &slen);
time_t t = luaL_opt(L, l_checktime, 2, time(NULL)); time_t t = luaL_opt(L, l_checktime, 2, time(NULL));
const char *se = s + slen; /* 's' end */
struct tm tmr, *stm; struct tm tmr, *stm;
if (*s == '!') { /* UTC? */ if (*s == '!') { /* UTC? */
stm = l_gmtime(&t, &tmr); stm = l_gmtime(&t, &tmr);
@ -290,7 +314,8 @@ static int os_date (lua_State *L) {
else else
stm = l_localtime(&t, &tmr); stm = l_localtime(&t, &tmr);
if (stm == NULL) /* invalid date? */ if (stm == NULL) /* invalid date? */
luaL_error(L, "time result cannot be represented in this installation"); return luaL_error(L,
"date result cannot be represented in this installation");
if (strcmp(s, "*t") == 0) { if (strcmp(s, "*t") == 0) {
lua_createtable(L, 0, 9); /* 9 = number of fields */ lua_createtable(L, 0, 9); /* 9 = number of fields */
setallfields(L, stm); setallfields(L, stm);
@ -300,13 +325,14 @@ static int os_date (lua_State *L) {
luaL_Buffer b; luaL_Buffer b;
cc[0] = '%'; cc[0] = '%';
luaL_buffinit(L, &b); luaL_buffinit(L, &b);
while (*s) { while (s < se) {
if (*s != '%') /* not a conversion specifier? */ if (*s != '%') /* not a conversion specifier? */
luaL_addchar(&b, *s++); luaL_addchar(&b, *s++);
else { else {
size_t reslen; size_t reslen;
char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT); char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT);
s = checkoption(L, s + 1, cc + 1); /* copy specifier to 'cc' */ s++; /* skip '%' */
s = checkoption(L, s, se - s, cc + 1); /* copy specifier to 'cc' */
reslen = strftime(buff, SIZETIMEFMT, cc, stm); reslen = strftime(buff, SIZETIMEFMT, cc, stm);
luaL_addsize(&b, reslen); luaL_addsize(&b, reslen);
} }
@ -325,18 +351,19 @@ static int os_time (lua_State *L) {
struct tm ts; struct tm ts;
luaL_checktype(L, 1, LUA_TTABLE); luaL_checktype(L, 1, LUA_TTABLE);
lua_settop(L, 1); /* make sure table is at the top */ lua_settop(L, 1); /* make sure table is at the top */
ts.tm_sec = getfield(L, "sec", 0, 0);
ts.tm_min = getfield(L, "min", 0, 0);
ts.tm_hour = getfield(L, "hour", 12, 0);
ts.tm_mday = getfield(L, "day", -1, 0);
ts.tm_mon = getfield(L, "month", -1, 1);
ts.tm_year = getfield(L, "year", -1, 1900); ts.tm_year = getfield(L, "year", -1, 1900);
ts.tm_mon = getfield(L, "month", -1, 1);
ts.tm_mday = getfield(L, "day", -1, 0);
ts.tm_hour = getfield(L, "hour", 12, 0);
ts.tm_min = getfield(L, "min", 0, 0);
ts.tm_sec = getfield(L, "sec", 0, 0);
ts.tm_isdst = getboolfield(L, "isdst"); ts.tm_isdst = getboolfield(L, "isdst");
t = mktime(&ts); t = mktime(&ts);
setallfields(L, &ts); /* update fields with normalized values */ setallfields(L, &ts); /* update fields with normalized values */
} }
if (t != (time_t)(l_timet)t || t == (time_t)(-1)) if (t != (time_t)(l_timet)t || t == (time_t)(-1))
luaL_error(L, "time result cannot be represented in this installation"); return luaL_error(L,
"time result cannot be represented in this installation");
l_pushtime(L, t); l_pushtime(L, t);
return 1; return 1;
} }

1056
lua-5.3.3/src/lparser.c → lua-5.4.0/src/lparser.c
View File

File diff suppressed because it is too large Load Diff

77
lua-5.3.3/src/lparser.h → lua-5.4.0/src/lparser.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lparser.h,v 1.76 2015/12/30 18:16:13 roberto Exp $ ** $Id: lparser.h $
** Lua Parser ** Lua Parser
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -30,56 +30,88 @@ typedef enum {
VFALSE, /* constant false */ VFALSE, /* constant false */
VK, /* constant in 'k'; info = index of constant in 'k' */ VK, /* constant in 'k'; info = index of constant in 'k' */
VKFLT, /* floating constant; nval = numerical float value */ VKFLT, /* floating constant; nval = numerical float value */
VKINT, /* integer constant; nval = numerical integer value */ VKINT, /* integer constant; ival = numerical integer value */
VKSTR, /* string constant; strval = TString address;
(string is fixed by the lexer) */
VNONRELOC, /* expression has its value in a fixed register; VNONRELOC, /* expression has its value in a fixed register;
info = result register */ info = result register */
VLOCAL, /* local variable; info = local register */ VLOCAL, /* local variable; var.sidx = stack index (local register);
var.vidx = relative index in 'actvar.arr' */
VUPVAL, /* upvalue variable; info = index of upvalue in 'upvalues' */ VUPVAL, /* upvalue variable; info = index of upvalue in 'upvalues' */
VCONST, /* compile-time constant; info = absolute index in 'actvar.arr' */
VINDEXED, /* indexed variable; VINDEXED, /* indexed variable;
ind.vt = whether 't' is register or upvalue; ind.t = table register;
ind.t = table register or upvalue; ind.idx = key's R index */
ind.idx = key's R/K index */ VINDEXUP, /* indexed upvalue;
ind.t = table upvalue;
ind.idx = key's K index */
VINDEXI, /* indexed variable with constant integer;
ind.t = table register;
ind.idx = key's value */
VINDEXSTR, /* indexed variable with literal string;
ind.t = table register;
ind.idx = key's K index */
VJMP, /* expression is a test/comparison; VJMP, /* expression is a test/comparison;
info = pc of corresponding jump instruction */ info = pc of corresponding jump instruction */
VRELOCABLE, /* expression can put result in any register; VRELOC, /* expression can put result in any register;
info = instruction pc */ info = instruction pc */
VCALL, /* expression is a function call; info = instruction pc */ VCALL, /* expression is a function call; info = instruction pc */
VVARARG /* vararg expression; info = instruction pc */ VVARARG /* vararg expression; info = instruction pc */
} expkind; } expkind;
#define vkisvar(k) (VLOCAL <= (k) && (k) <= VINDEXED) #define vkisvar(k) (VLOCAL <= (k) && (k) <= VINDEXSTR)
#define vkisinreg(k) ((k) == VNONRELOC || (k) == VLOCAL) #define vkisindexed(k) (VINDEXED <= (k) && (k) <= VINDEXSTR)
typedef struct expdesc { typedef struct expdesc {
expkind k; expkind k;
union { union {
lua_Integer ival; /* for VKINT */ lua_Integer ival; /* for VKINT */
lua_Number nval; /* for VKFLT */ lua_Number nval; /* for VKFLT */
TString *strval; /* for VKSTR */
int info; /* for generic use */ int info; /* for generic use */
struct { /* for indexed variables (VINDEXED) */ struct { /* for indexed variables */
short idx; /* index (R/K) */ short idx; /* index (R or "long" K) */
lu_byte t; /* table (register or upvalue) */ lu_byte t; /* table (register or upvalue) */
lu_byte vt; /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */
} ind; } ind;
struct { /* for local variables */
lu_byte sidx; /* index in the stack */
unsigned short vidx; /* compiler index (in 'actvar.arr') */
} var;
} u; } u;
int t; /* patch list of 'exit when true' */ int t; /* patch list of 'exit when true' */
int f; /* patch list of 'exit when false' */ int f; /* patch list of 'exit when false' */
} expdesc; } expdesc;
/* description of active local variable */ /* kinds of variables */
typedef struct Vardesc { #define VDKREG 0 /* regular */
short idx; /* variable index in stack */ #define RDKCONST 1 /* constant */
#define RDKTOCLOSE 2 /* to-be-closed */
#define RDKCTC 3 /* compile-time constant */
/* description of an active local variable */
typedef union Vardesc {
struct {
TValuefields; /* constant value (if it is a compile-time constant) */
lu_byte kind;
lu_byte sidx; /* index of the variable in the stack */
short pidx; /* index of the variable in the Proto's 'locvars' array */
TString *name; /* variable name */
} vd;
TValue k; /* constant value (if any) */
} Vardesc; } Vardesc;
/* description of pending goto statements and label statements */ /* description of pending goto statements and label statements */
typedef struct Labeldesc { typedef struct Labeldesc {
TString *name; /* label identifier */ TString *name; /* label identifier */
int pc; /* position in code */ int pc; /* position in code */
int line; /* line where it appeared */ int line; /* line where it appeared */
lu_byte nactvar; /* local level where it appears in current block */ lu_byte nactvar; /* number of active variables in that position */
lu_byte close; /* goto that escapes upvalues */
} Labeldesc; } Labeldesc;
@ -93,7 +125,7 @@ typedef struct Labellist {
/* dynamic structures used by the parser */ /* dynamic structures used by the parser */
typedef struct Dyndata { typedef struct Dyndata {
struct { /* list of active local variables */ struct { /* list of all active local variables */
Vardesc *arr; Vardesc *arr;
int n; int n;
int size; int size;
@ -115,17 +147,22 @@ typedef struct FuncState {
struct BlockCnt *bl; /* chain of current blocks */ struct BlockCnt *bl; /* chain of current blocks */
int pc; /* next position to code (equivalent to 'ncode') */ int pc; /* next position to code (equivalent to 'ncode') */
int lasttarget; /* 'label' of last 'jump label' */ int lasttarget; /* 'label' of last 'jump label' */
int jpc; /* list of pending jumps to 'pc' */ int previousline; /* last line that was saved in 'lineinfo' */
int nk; /* number of elements in 'k' */ int nk; /* number of elements in 'k' */
int np; /* number of elements in 'p' */ int np; /* number of elements in 'p' */
int nabslineinfo; /* number of elements in 'abslineinfo' */
int firstlocal; /* index of first local var (in Dyndata array) */ int firstlocal; /* index of first local var (in Dyndata array) */
short nlocvars; /* number of elements in 'f->locvars' */ int firstlabel; /* index of first label (in 'dyd->label->arr') */
short ndebugvars; /* number of elements in 'f->locvars' */
lu_byte nactvar; /* number of active local variables */ lu_byte nactvar; /* number of active local variables */
lu_byte nups; /* number of upvalues */ lu_byte nups; /* number of upvalues */
lu_byte freereg; /* first free register */ lu_byte freereg; /* first free register */
lu_byte iwthabs; /* instructions issued since last absolute line info */
lu_byte needclose; /* function needs to close upvalues when returning */
} FuncState; } FuncState;
LUAI_FUNC int luaY_nvarstack (FuncState *fs);
LUAI_FUNC LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, LUAI_FUNC LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
Dyndata *dyd, const char *name, int firstchar); Dyndata *dyd, const char *name, int firstchar);

4
lua-5.3.3/src/lprefix.h → lua-5.4.0/src/lprefix.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lprefix.h,v 1.2 2014/12/29 16:54:13 roberto Exp $ ** $Id: lprefix.h $
** Definitions for Lua code that must come before any other header file ** Definitions for Lua code that must come before any other header file
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -33,7 +33,7 @@
/* /*
** Windows stuff ** Windows stuff
*/ */
#if defined(_WIN32) /* { */ #if defined(_WIN32) /* { */
#if !defined(_CRT_SECURE_NO_WARNINGS) #if !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS /* avoid warnings about ISO C functions */ #define _CRT_SECURE_NO_WARNINGS /* avoid warnings about ISO C functions */

242
lua-5.3.3/src/lstate.c → lua-5.4.0/src/lstate.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lstate.c,v 2.133 2015/11/13 12:16:51 roberto Exp $ ** $Id: lstate.c $
** Global State ** Global State
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -28,25 +28,6 @@
#include "ltm.h" #include "ltm.h"
#if !defined(LUAI_GCPAUSE)
#define LUAI_GCPAUSE 200 /* 200% */
#endif
#if !defined(LUAI_GCMUL)
#define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */
#endif
/*
** a macro to help the creation of a unique random seed when a state is
** created; the seed is used to randomize hashes.
*/
#if !defined(luai_makeseed)
#include <time.h>
#define luai_makeseed() cast(unsigned int, time(NULL))
#endif
/* /*
** thread state + extra space ** thread state + extra space
@ -71,25 +52,35 @@ typedef struct LG {
/* /*
** Compute an initial seed as random as possible. Rely on Address Space ** A macro to create a "random" seed when a state is created;
** Layout Randomization (if present) to increase randomness.. ** the seed is used to randomize string hashes.
*/
#if !defined(luai_makeseed)
#include <time.h>
/*
** Compute an initial seed with some level of randomness.
** Rely on Address Space Layout Randomization (if present) and
** current time.
*/ */
#define addbuff(b,p,e) \ #define addbuff(b,p,e) \
{ size_t t = cast(size_t, e); \ { size_t t = cast_sizet(e); \
memcpy(b + p, &t, sizeof(t)); p += sizeof(t); } memcpy(b + p, &t, sizeof(t)); p += sizeof(t); }
static unsigned int makeseed (lua_State *L) { static unsigned int luai_makeseed (lua_State *L) {
char buff[4 * sizeof(size_t)]; char buff[3 * sizeof(size_t)];
unsigned int h = luai_makeseed(); unsigned int h = cast_uint(time(NULL));
int p = 0; int p = 0;
addbuff(buff, p, L); /* heap variable */ addbuff(buff, p, L); /* heap variable */
addbuff(buff, p, &h); /* local variable */ addbuff(buff, p, &h); /* local variable */
addbuff(buff, p, luaO_nilobject); /* global variable */
addbuff(buff, p, &lua_newstate); /* public function */ addbuff(buff, p, &lua_newstate); /* public function */
lua_assert(p == sizeof(buff)); lua_assert(p == sizeof(buff));
return luaS_hash(buff, p, h); return luaS_hash(buff, p, h, 1);
} }
#endif
/* /*
** set GCdebt to a new value keeping the value (totalbytes + GCdebt) ** set GCdebt to a new value keeping the value (totalbytes + GCdebt)
@ -105,12 +96,73 @@ void luaE_setdebt (global_State *g, l_mem debt) {
} }
LUA_API int lua_setcstacklimit (lua_State *L, unsigned int limit) {
global_State *g = G(L);
int ccalls;
luaE_freeCI(L); /* release unused CIs */
ccalls = getCcalls(L);
if (limit >= 40000)
return 0; /* out of bounds */
limit += CSTACKERR;
if (L != g-> mainthread)
return 0; /* only main thread can change the C stack */
else if (ccalls <= CSTACKERR)
return 0; /* handling overflow */
else {
int diff = limit - g->Cstacklimit;
if (ccalls + diff <= CSTACKERR)
return 0; /* new limit would cause an overflow */
g->Cstacklimit = limit; /* set new limit */
L->nCcalls += diff; /* correct 'nCcalls' */
return limit - diff - CSTACKERR; /* success; return previous limit */
}
}
/*
** Decrement count of "C calls" and check for overflows. In case of
** a stack overflow, check appropriate error ("regular" overflow or
** overflow while handling stack overflow). If 'nCcalls' is smaller
** than CSTACKERR but larger than CSTACKMARK, it means it has just
** entered the "overflow zone", so the function raises an overflow
** error. If 'nCcalls' is smaller than CSTACKMARK (which means it is
** already handling an overflow) but larger than CSTACKERRMARK, does
** not report an error (to allow message handling to work). Otherwise,
** report a stack overflow while handling a stack overflow (probably
** caused by a repeating error in the message handling function).
*/
void luaE_enterCcall (lua_State *L) {
int ncalls = getCcalls(L);
L->nCcalls--;
if (ncalls <= CSTACKERR) { /* possible overflow? */
luaE_freeCI(L); /* release unused CIs */
ncalls = getCcalls(L); /* update call count */
if (ncalls <= CSTACKERR) { /* still overflow? */
if (ncalls <= CSTACKERRMARK) /* below error-handling zone? */
luaD_throw(L, LUA_ERRERR); /* error while handling stack error */
else if (ncalls >= CSTACKMARK) {
/* not in error-handling zone; raise the error now */
L->nCcalls = (CSTACKMARK - 1); /* enter error-handling zone */
luaG_runerror(L, "C stack overflow");
}
/* else stack is in the error-handling zone;
allow message handler to work */
}
}
}
CallInfo *luaE_extendCI (lua_State *L) { CallInfo *luaE_extendCI (lua_State *L) {
CallInfo *ci = luaM_new(L, CallInfo); CallInfo *ci;
lua_assert(L->ci->next == NULL);
luaE_enterCcall(L);
ci = luaM_new(L, CallInfo);
lua_assert(L->ci->next == NULL); lua_assert(L->ci->next == NULL);
L->ci->next = ci; L->ci->next = ci;
ci->previous = L->ci; ci->previous = L->ci;
ci->next = NULL; ci->next = NULL;
ci->u.l.trap = 0;
L->nci++; L->nci++;
return ci; return ci;
} }
@ -123,46 +175,60 @@ void luaE_freeCI (lua_State *L) {
CallInfo *ci = L->ci; CallInfo *ci = L->ci;
CallInfo *next = ci->next; CallInfo *next = ci->next;
ci->next = NULL; ci->next = NULL;
L->nCcalls += L->nci; /* add removed elements back to 'nCcalls' */
while ((ci = next) != NULL) { while ((ci = next) != NULL) {
next = ci->next; next = ci->next;
luaM_free(L, ci); luaM_free(L, ci);
L->nci--; L->nci--;
} }
L->nCcalls -= L->nci; /* adjust result */
} }
/* /*
** free half of the CallInfo structures not in use by a thread ** free half of the CallInfo structures not in use by a thread,
** keeping the first one.
*/ */
void luaE_shrinkCI (lua_State *L) { void luaE_shrinkCI (lua_State *L) {
CallInfo *ci = L->ci; CallInfo *ci = L->ci->next; /* first free CallInfo */
CallInfo *next2; /* next's next */ CallInfo *next;
/* while there are two nexts */ if (ci == NULL)
while (ci->next != NULL && (next2 = ci->next->next) != NULL) { return; /* no extra elements */
luaM_free(L, ci->next); /* free next */ L->nCcalls += L->nci; /* add removed elements back to 'nCcalls' */
while ((next = ci->next) != NULL) { /* two extra elements? */
CallInfo *next2 = next->next; /* next's next */
ci->next = next2; /* remove next from the list */
L->nci--; L->nci--;
ci->next = next2; /* remove 'next' from the list */ luaM_free(L, next); /* free next */
next2->previous = ci; if (next2 == NULL)
ci = next2; /* keep next's next */ break; /* no more elements */
else {
next2->previous = ci;
ci = next2; /* continue */
}
} }
L->nCcalls -= L->nci; /* adjust result */
} }
static void stack_init (lua_State *L1, lua_State *L) { static void stack_init (lua_State *L1, lua_State *L) {
int i; CallInfo *ci; int i; CallInfo *ci;
/* initialize stack array */ /* initialize stack array */
L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, TValue); L1->stack = luaM_newvector(L, BASIC_STACK_SIZE, StackValue);
L1->stacksize = BASIC_STACK_SIZE; L1->stacksize = BASIC_STACK_SIZE;
for (i = 0; i < BASIC_STACK_SIZE; i++) for (i = 0; i < BASIC_STACK_SIZE; i++)
setnilvalue(L1->stack + i); /* erase new stack */ setnilvalue(s2v(L1->stack + i)); /* erase new stack */
L1->top = L1->stack; L1->top = L1->stack;
L1->stack_last = L1->stack + L1->stacksize - EXTRA_STACK; L1->stack_last = L1->stack + L1->stacksize - EXTRA_STACK;
/* initialize first ci */ /* initialize first ci */
ci = &L1->base_ci; ci = &L1->base_ci;
ci->next = ci->previous = NULL; ci->next = ci->previous = NULL;
ci->callstatus = 0; ci->callstatus = CIST_C;
ci->func = L1->top; ci->func = L1->top;
setnilvalue(L1->top++); /* 'function' entry for this 'ci' */ ci->u.c.k = NULL;
ci->nresults = 0;
setnilvalue(s2v(L1->top)); /* 'function' entry for this 'ci' */
L1->top++;
ci->top = L1->top + LUA_MINSTACK; ci->top = L1->top + LUA_MINSTACK;
L1->ci = ci; L1->ci = ci;
} }
@ -198,7 +264,8 @@ static void init_registry (lua_State *L, global_State *g) {
/* /*
** open parts of the state that may cause memory-allocation errors. ** open parts of the state that may cause memory-allocation errors.
** ('g->version' != NULL flags that the state was completely build) ** ('g->nilvalue' being a nil value flags that the state was completely
** build.)
*/ */
static void f_luaopen (lua_State *L, void *ud) { static void f_luaopen (lua_State *L, void *ud) {
global_State *g = G(L); global_State *g = G(L);
@ -209,7 +276,7 @@ static void f_luaopen (lua_State *L, void *ud) {
luaT_init(L); luaT_init(L);
luaX_init(L); luaX_init(L);
g->gcrunning = 1; /* allow gc */ g->gcrunning = 1; /* allow gc */
g->version = lua_version(NULL); setnilvalue(&g->nilvalue);
luai_userstateopen(L); luai_userstateopen(L);
} }
@ -226,14 +293,12 @@ static void preinit_thread (lua_State *L, global_State *g) {
L->stacksize = 0; L->stacksize = 0;
L->twups = L; /* thread has no upvalues */ L->twups = L; /* thread has no upvalues */
L->errorJmp = NULL; L->errorJmp = NULL;
L->nCcalls = 0;
L->hook = NULL; L->hook = NULL;
L->hookmask = 0; L->hookmask = 0;
L->basehookcount = 0; L->basehookcount = 0;
L->allowhook = 1; L->allowhook = 1;
resethookcount(L); resethookcount(L);
L->openupval = NULL; L->openupval = NULL;
L->nny = 1;
L->status = LUA_OK; L->status = LUA_OK;
L->errfunc = 0; L->errfunc = 0;
} }
@ -241,9 +306,9 @@ static void preinit_thread (lua_State *L, global_State *g) {
static void close_state (lua_State *L) { static void close_state (lua_State *L) {
global_State *g = G(L); global_State *g = G(L);
luaF_close(L, L->stack); /* close all upvalues for this thread */ luaF_close(L, L->stack, CLOSEPROTECT); /* close all upvalues */
luaC_freeallobjects(L); /* collect all objects */ luaC_freeallobjects(L); /* collect all objects */
if (g->version) /* closing a fully built state? */ if (ttisnil(&g->nilvalue)) /* closing a fully built state? */
luai_userstateclose(L); luai_userstateclose(L);
luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size); luaM_freearray(L, G(L)->strt.hash, G(L)->strt.size);
freestack(L); freestack(L);
@ -260,14 +325,15 @@ LUA_API lua_State *lua_newthread (lua_State *L) {
/* create new thread */ /* create new thread */
L1 = &cast(LX *, luaM_newobject(L, LUA_TTHREAD, sizeof(LX)))->l; L1 = &cast(LX *, luaM_newobject(L, LUA_TTHREAD, sizeof(LX)))->l;
L1->marked = luaC_white(g); L1->marked = luaC_white(g);
L1->tt = LUA_TTHREAD; L1->tt = LUA_VTHREAD;
/* link it on list 'allgc' */ /* link it on list 'allgc' */
L1->next = g->allgc; L1->next = g->allgc;
g->allgc = obj2gco(L1); g->allgc = obj2gco(L1);
/* anchor it on L stack */ /* anchor it on L stack */
setthvalue(L, L->top, L1); setthvalue2s(L, L->top, L1);
api_incr_top(L); api_incr_top(L);
preinit_thread(L1, g); preinit_thread(L1, g);
L1->nCcalls = getCcalls(L);
L1->hookmask = L->hookmask; L1->hookmask = L->hookmask;
L1->basehookcount = L->basehookcount; L1->basehookcount = L->basehookcount;
L1->hook = L->hook; L1->hook = L->hook;
@ -284,7 +350,7 @@ LUA_API lua_State *lua_newthread (lua_State *L) {
void luaE_freethread (lua_State *L, lua_State *L1) { void luaE_freethread (lua_State *L, lua_State *L1) {
LX *l = fromstate(L1); LX *l = fromstate(L1);
luaF_close(L1, L1->stack); /* close all upvalues for this thread */ luaF_close(L1, L1->stack, NOCLOSINGMETH); /* close all upvalues */
lua_assert(L1->openupval == NULL); lua_assert(L1->openupval == NULL);
luai_userstatefree(L, L1); luai_userstatefree(L, L1);
freestack(L1); freestack(L1);
@ -292,6 +358,28 @@ void luaE_freethread (lua_State *L, lua_State *L1) {
} }
int lua_resetthread (lua_State *L) {
CallInfo *ci;
int status;
lua_lock(L);
L->ci = ci = &L->base_ci; /* unwind CallInfo list */
setnilvalue(s2v(L->stack)); /* 'function' entry for basic 'ci' */
ci->func = L->stack;
ci->callstatus = CIST_C;
status = luaF_close(L, L->stack, CLOSEPROTECT);
if (status != CLOSEPROTECT) /* real errors? */
luaD_seterrorobj(L, status, L->stack + 1);
else {
status = LUA_OK;
L->top = L->stack + 1;
}
ci->top = L->top + LUA_MINSTACK;
L->status = status;
lua_unlock(L);
return status;
}
LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) { LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
int i; int i;
lua_State *L; lua_State *L;
@ -300,34 +388,43 @@ LUA_API lua_State *lua_newstate (lua_Alloc f, void *ud) {
if (l == NULL) return NULL; if (l == NULL) return NULL;
L = &l->l.l; L = &l->l.l;
g = &l->g; g = &l->g;
L->next = NULL; L->tt = LUA_VTHREAD;
L->tt = LUA_TTHREAD;
g->currentwhite = bitmask(WHITE0BIT); g->currentwhite = bitmask(WHITE0BIT);
L->marked = luaC_white(g); L->marked = luaC_white(g);
preinit_thread(L, g); preinit_thread(L, g);
g->allgc = obj2gco(L); /* by now, only object is the main thread */
L->next = NULL;
g->Cstacklimit = L->nCcalls = LUAI_MAXCSTACK + CSTACKERR;
g->frealloc = f; g->frealloc = f;
g->ud = ud; g->ud = ud;
g->warnf = NULL;
g->ud_warn = NULL;
g->mainthread = L; g->mainthread = L;
g->seed = makeseed(L); g->seed = luai_makeseed(L);
g->gcrunning = 0; /* no GC while building state */ g->gcrunning = 0; /* no GC while building state */
g->GCestimate = 0;
g->strt.size = g->strt.nuse = 0; g->strt.size = g->strt.nuse = 0;
g->strt.hash = NULL; g->strt.hash = NULL;
setnilvalue(&g->l_registry); setnilvalue(&g->l_registry);
g->panic = NULL; g->panic = NULL;
g->version = NULL;
g->gcstate = GCSpause; g->gcstate = GCSpause;
g->gckind = KGC_NORMAL; g->gckind = KGC_INC;
g->allgc = g->finobj = g->tobefnz = g->fixedgc = NULL; g->gcemergency = 0;
g->finobj = g->tobefnz = g->fixedgc = NULL;
g->survival = g->old = g->reallyold = NULL;
g->finobjsur = g->finobjold = g->finobjrold = NULL;
g->sweepgc = NULL; g->sweepgc = NULL;
g->gray = g->grayagain = NULL; g->gray = g->grayagain = NULL;
g->weak = g->ephemeron = g->allweak = NULL; g->weak = g->ephemeron = g->allweak = NULL;
g->twups = NULL; g->twups = NULL;
g->totalbytes = sizeof(LG); g->totalbytes = sizeof(LG);
g->GCdebt = 0; g->GCdebt = 0;
g->gcfinnum = 0; g->lastatomic = 0;
g->gcpause = LUAI_GCPAUSE; setivalue(&g->nilvalue, 0); /* to signal that state is not yet built */
g->gcstepmul = LUAI_GCMUL; setgcparam(g->gcpause, LUAI_GCPAUSE);
setgcparam(g->gcstepmul, LUAI_GCMUL);
g->gcstepsize = LUAI_GCSTEPSIZE;
setgcparam(g->genmajormul, LUAI_GENMAJORMUL);
g->genminormul = LUAI_GENMINORMUL;
for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL; for (i=0; i < LUA_NUMTAGS; i++) g->mt[i] = NULL;
if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) { if (luaD_rawrunprotected(L, f_luaopen, NULL) != LUA_OK) {
/* memory allocation error: free partial state */ /* memory allocation error: free partial state */
@ -345,3 +442,26 @@ LUA_API void lua_close (lua_State *L) {
} }
void luaE_warning (lua_State *L, const char *msg, int tocont) {
lua_WarnFunction wf = G(L)->warnf;
if (wf != NULL)
wf(G(L)->ud_warn, msg, tocont);
}
/*
** Generate a warning from an error message
*/
void luaE_warnerror (lua_State *L, const char *where) {
TValue *errobj = s2v(L->top - 1); /* error object */
const char *msg = (ttisstring(errobj))
? svalue(errobj)
: "error object is not a string";
/* produce warning "error in %s (%s)" (where, msg) */
luaE_warning(L, "error in ", 1);
luaE_warning(L, where, 1);
luaE_warning(L, " (", 1);
luaE_warning(L, msg, 1);
luaE_warning(L, ")", 0);
}

364
lua-5.4.0/src/lstate.h Normal file
View File

@ -0,0 +1,364 @@
/*
** $Id: lstate.h $
** Global State
** See Copyright Notice in lua.h
*/
#ifndef lstate_h
#define lstate_h
#include "lua.h"
#include "lobject.h"
#include "ltm.h"
#include "lzio.h"
/*
** Some notes about garbage-collected objects: All objects in Lua must
** be kept somehow accessible until being freed, so all objects always
** belong to one (and only one) of these lists, using field 'next' of
** the 'CommonHeader' for the link:
**
** 'allgc': all objects not marked for finalization;
** 'finobj': all objects marked for finalization;
** 'tobefnz': all objects ready to be finalized;
** 'fixedgc': all objects that are not to be collected (currently
** only small strings, such as reserved words).
**
** For the generational collector, some of these lists have marks for
** generations. Each mark points to the first element in the list for
** that particular generation; that generation goes until the next mark.
**
** 'allgc' -> 'survival': new objects;
** 'survival' -> 'old': objects that survived one collection;
** 'old' -> 'reallyold': objects that became old in last collection;
** 'reallyold' -> NULL: objects old for more than one cycle.
**
** 'finobj' -> 'finobjsur': new objects marked for finalization;
** 'finobjsur' -> 'finobjold': survived """";
** 'finobjold' -> 'finobjrold': just old """";
** 'finobjrold' -> NULL: really old """".
*/
/*
** Moreover, there is another set of lists that control gray objects.
** These lists are linked by fields 'gclist'. (All objects that
** can become gray have such a field. The field is not the same
** in all objects, but it always has this name.) Any gray object
** must belong to one of these lists, and all objects in these lists
** must be gray:
**
** 'gray': regular gray objects, still waiting to be visited.
** 'grayagain': objects that must be revisited at the atomic phase.
** That includes
** - black objects got in a write barrier;
** - all kinds of weak tables during propagation phase;
** - all threads.
** 'weak': tables with weak values to be cleared;
** 'ephemeron': ephemeron tables with white->white entries;
** 'allweak': tables with weak keys and/or weak values to be cleared.
*/
/*
** About 'nCcalls': each thread in Lua (a lua_State) keeps a count of
** how many "C calls" it still can do in the C stack, to avoid C-stack
** overflow. This count is very rough approximation; it considers only
** recursive functions inside the interpreter, as non-recursive calls
** can be considered using a fixed (although unknown) amount of stack
** space.
**
** The count has two parts: the lower part is the count itself; the
** higher part counts the number of non-yieldable calls in the stack.
** (They are together so that we can change both with one instruction.)
**
** Because calls to external C functions can use an unknown amount
** of space (e.g., functions using an auxiliary buffer), calls
** to these functions add more than one to the count (see CSTACKCF).
**
** The proper count excludes the number of CallInfo structures allocated
** by Lua, as a kind of "potential" calls. So, when Lua calls a function
** (and "consumes" one CallInfo), it needs neither to decrement nor to
** check 'nCcalls', as its use of C stack is already accounted for.
*/
/* number of "C stack slots" used by an external C function */
#define CSTACKCF 10
/*
** The C-stack size is sliced in the following zones:
** - larger than CSTACKERR: normal stack;
** - [CSTACKMARK, CSTACKERR]: buffer zone to signal a stack overflow;
** - [CSTACKCF, CSTACKERRMARK]: error-handling zone;
** - below CSTACKERRMARK: buffer zone to signal overflow during overflow;
** (Because the counter can be decremented CSTACKCF at once, we need
** the so called "buffer zones", with at least that size, to properly
** detect a change from one zone to the next.)
*/
#define CSTACKERR (8 * CSTACKCF)
#define CSTACKMARK (CSTACKERR - (CSTACKCF + 2))
#define CSTACKERRMARK (CSTACKCF + 2)
/* initial limit for the C-stack of threads */
#define CSTACKTHREAD (2 * CSTACKERR)
/* true if this thread does not have non-yieldable calls in the stack */
#define yieldable(L) (((L)->nCcalls & 0xffff0000) == 0)
/* real number of C calls */
#define getCcalls(L) ((L)->nCcalls & 0xffff)
/* Increment the number of non-yieldable calls */
#define incnny(L) ((L)->nCcalls += 0x10000)
/* Decrement the number of non-yieldable calls */
#define decnny(L) ((L)->nCcalls -= 0x10000)
/* Increment the number of non-yieldable calls and decrement nCcalls */
#define incXCcalls(L) ((L)->nCcalls += 0x10000 - CSTACKCF)
/* Decrement the number of non-yieldable calls and increment nCcalls */
#define decXCcalls(L) ((L)->nCcalls -= 0x10000 - CSTACKCF)
struct lua_longjmp; /* defined in ldo.c */
/*
** Atomic type (relative to signals) to better ensure that 'lua_sethook'
** is thread safe
*/
#if !defined(l_signalT)
#include <signal.h>
#define l_signalT sig_atomic_t
#endif
/* extra stack space to handle TM calls and some other extras */
#define EXTRA_STACK 5
#define BASIC_STACK_SIZE (2*LUA_MINSTACK)
/* kinds of Garbage Collection */
#define KGC_INC 0 /* incremental gc */
#define KGC_GEN 1 /* generational gc */
typedef struct stringtable {
TString **hash;
int nuse; /* number of elements */
int size;
} stringtable;
/*
** Information about a call.
*/
typedef struct CallInfo {
StkId func; /* function index in the stack */
StkId top; /* top for this function */
struct CallInfo *previous, *next; /* dynamic call link */
union {
struct { /* only for Lua functions */
const Instruction *savedpc;
volatile l_signalT trap;
int nextraargs; /* # of extra arguments in vararg functions */
} l;
struct { /* only for C functions */
lua_KFunction k; /* continuation in case of yields */
ptrdiff_t old_errfunc;
lua_KContext ctx; /* context info. in case of yields */
} c;
} u;
union {
int funcidx; /* called-function index */
int nyield; /* number of values yielded */
struct { /* info about transferred values (for call/return hooks) */
unsigned short ftransfer; /* offset of first value transferred */
unsigned short ntransfer; /* number of values transferred */
} transferinfo;
} u2;
short nresults; /* expected number of results from this function */
unsigned short callstatus;
} CallInfo;
/*
** Bits in CallInfo status
*/
#define CIST_OAH (1<<0) /* original value of 'allowhook' */
#define CIST_C (1<<1) /* call is running a C function */
#define CIST_HOOKED (1<<2) /* call is running a debug hook */
#define CIST_YPCALL (1<<3) /* call is a yieldable protected call */
#define CIST_TAIL (1<<4) /* call was tail called */
#define CIST_HOOKYIELD (1<<5) /* last hook called yielded */
#define CIST_FIN (1<<6) /* call is running a finalizer */
#define CIST_TRAN (1<<7) /* 'ci' has transfer information */
#if defined(LUA_COMPAT_LT_LE)
#define CIST_LEQ (1<<8) /* using __lt for __le */
#endif
/* active function is a Lua function */
#define isLua(ci) (!((ci)->callstatus & CIST_C))
/* call is running Lua code (not a hook) */
#define isLuacode(ci) (!((ci)->callstatus & (CIST_C | CIST_HOOKED)))
/* assume that CIST_OAH has offset 0 and that 'v' is strictly 0/1 */
#define setoah(st,v) ((st) = ((st) & ~CIST_OAH) | (v))
#define getoah(st) ((st) & CIST_OAH)
/*
** 'global state', shared by all threads of this state
*/
typedef struct global_State {
lua_Alloc frealloc; /* function to reallocate memory */
void *ud; /* auxiliary data to 'frealloc' */
l_mem totalbytes; /* number of bytes currently allocated - GCdebt */
l_mem GCdebt; /* bytes allocated not yet compensated by the collector */
lu_mem GCestimate; /* an estimate of the non-garbage memory in use */
lu_mem lastatomic; /* see function 'genstep' in file 'lgc.c' */
stringtable strt; /* hash table for strings */
TValue l_registry;
TValue nilvalue; /* a nil value */
unsigned int seed; /* randomized seed for hashes */
lu_byte currentwhite;
lu_byte gcstate; /* state of garbage collector */
lu_byte gckind; /* kind of GC running */
lu_byte genminormul; /* control for minor generational collections */
lu_byte genmajormul; /* control for major generational collections */
lu_byte gcrunning; /* true if GC is running */
lu_byte gcemergency; /* true if this is an emergency collection */
lu_byte gcpause; /* size of pause between successive GCs */
lu_byte gcstepmul; /* GC "speed" */
lu_byte gcstepsize; /* (log2 of) GC granularity */
GCObject *allgc; /* list of all collectable objects */
GCObject **sweepgc; /* current position of sweep in list */
GCObject *finobj; /* list of collectable objects with finalizers */
GCObject *gray; /* list of gray objects */
GCObject *grayagain; /* list of objects to be traversed atomically */
GCObject *weak; /* list of tables with weak values */
GCObject *ephemeron; /* list of ephemeron tables (weak keys) */
GCObject *allweak; /* list of all-weak tables */
GCObject *tobefnz; /* list of userdata to be GC */
GCObject *fixedgc; /* list of objects not to be collected */
/* fields for generational collector */
GCObject *survival; /* start of objects that survived one GC cycle */
GCObject *old; /* start of old objects */
GCObject *reallyold; /* old objects with more than one cycle */
GCObject *finobjsur; /* list of survival objects with finalizers */
GCObject *finobjold; /* list of old objects with finalizers */
GCObject *finobjrold; /* list of really old objects with finalizers */
struct lua_State *twups; /* list of threads with open upvalues */
lua_CFunction panic; /* to be called in unprotected errors */
struct lua_State *mainthread;
TString *memerrmsg; /* message for memory-allocation errors */
TString *tmname[TM_N]; /* array with tag-method names */
struct Table *mt[LUA_NUMTAGS]; /* metatables for basic types */
TString *strcache[STRCACHE_N][STRCACHE_M]; /* cache for strings in API */
lua_WarnFunction warnf; /* warning function */
void *ud_warn; /* auxiliary data to 'warnf' */
unsigned int Cstacklimit; /* current limit for the C stack */
} global_State;
/*
** 'per thread' state
*/
struct lua_State {
CommonHeader;
lu_byte status;
lu_byte allowhook;
unsigned short nci; /* number of items in 'ci' list */
StkId top; /* first free slot in the stack */
global_State *l_G;
CallInfo *ci; /* call info for current function */
const Instruction *oldpc; /* last pc traced */
StkId stack_last; /* last free slot in the stack */
StkId stack; /* stack base */
UpVal *openupval; /* list of open upvalues in this stack */
GCObject *gclist;
struct lua_State *twups; /* list of threads with open upvalues */
struct lua_longjmp *errorJmp; /* current error recover point */
CallInfo base_ci; /* CallInfo for first level (C calling Lua) */
volatile lua_Hook hook;
ptrdiff_t errfunc; /* current error handling function (stack index) */
l_uint32 nCcalls; /* number of allowed nested C calls - 'nci' */
int stacksize;
int basehookcount;
int hookcount;
volatile l_signalT hookmask;
};
#define G(L) (L->l_G)
/*
** Union of all collectable objects (only for conversions)
*/
union GCUnion {
GCObject gc; /* common header */
struct TString ts;
struct Udata u;
union Closure cl;
struct Table h;
struct Proto p;
struct lua_State th; /* thread */
struct UpVal upv;
};
#define cast_u(o) cast(union GCUnion *, (o))
/* macros to convert a GCObject into a specific value */
#define gco2ts(o) \
check_exp(novariant((o)->tt) == LUA_TSTRING, &((cast_u(o))->ts))
#define gco2u(o) check_exp((o)->tt == LUA_VUSERDATA, &((cast_u(o))->u))
#define gco2lcl(o) check_exp((o)->tt == LUA_VLCL, &((cast_u(o))->cl.l))
#define gco2ccl(o) check_exp((o)->tt == LUA_VCCL, &((cast_u(o))->cl.c))
#define gco2cl(o) \
check_exp(novariant((o)->tt) == LUA_TFUNCTION, &((cast_u(o))->cl))
#define gco2t(o) check_exp((o)->tt == LUA_VTABLE, &((cast_u(o))->h))
#define gco2p(o) check_exp((o)->tt == LUA_VPROTO, &((cast_u(o))->p))
#define gco2th(o) check_exp((o)->tt == LUA_VTHREAD, &((cast_u(o))->th))
#define gco2upv(o) check_exp((o)->tt == LUA_VUPVAL, &((cast_u(o))->upv))
/*
** macro to convert a Lua object into a GCObject
** (The access to 'tt' tries to ensure that 'v' is actually a Lua object.)
*/
#define obj2gco(v) check_exp((v)->tt >= LUA_TSTRING, &(cast_u(v)->gc))
/* actual number of total bytes allocated */
#define gettotalbytes(g) cast(lu_mem, (g)->totalbytes + (g)->GCdebt)
LUAI_FUNC void luaE_setdebt (global_State *g, l_mem debt);
LUAI_FUNC void luaE_freethread (lua_State *L, lua_State *L1);
LUAI_FUNC CallInfo *luaE_extendCI (lua_State *L);
LUAI_FUNC void luaE_freeCI (lua_State *L);
LUAI_FUNC void luaE_shrinkCI (lua_State *L);
LUAI_FUNC void luaE_enterCcall (lua_State *L);
LUAI_FUNC void luaE_warning (lua_State *L, const char *msg, int tocont);
LUAI_FUNC void luaE_warnerror (lua_State *L, const char *where);
#define luaE_exitCcall(L) ((L)->nCcalls++)
#endif

141
lua-5.3.3/src/lstring.c → lua-5.4.0/src/lstring.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lstring.c,v 2.56 2015/11/23 11:32:51 roberto Exp $ ** $Id: lstring.c $
** String table (keeps all strings handled by Lua) ** String table (keeps all strings handled by Lua)
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -22,11 +22,8 @@
#include "lstring.h" #include "lstring.h"
#define MEMERRMSG "not enough memory"
/* /*
** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to ** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a long string to
** compute its hash ** compute its hash
*/ */
#if !defined(LUAI_HASHLIMIT) #if !defined(LUAI_HASHLIMIT)
@ -34,21 +31,28 @@
#endif #endif
/*
** Maximum size for string table.
*/
#define MAXSTRTB cast_int(luaM_limitN(MAX_INT, TString*))
/* /*
** equality for long strings ** equality for long strings
*/ */
int luaS_eqlngstr (TString *a, TString *b) { int luaS_eqlngstr (TString *a, TString *b) {
size_t len = a->u.lnglen; size_t len = a->u.lnglen;
lua_assert(a->tt == LUA_TLNGSTR && b->tt == LUA_TLNGSTR); lua_assert(a->tt == LUA_VLNGSTR && b->tt == LUA_VLNGSTR);
return (a == b) || /* same instance or... */ return (a == b) || /* same instance or... */
((len == b->u.lnglen) && /* equal length and ... */ ((len == b->u.lnglen) && /* equal length and ... */
(memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */ (memcmp(getstr(a), getstr(b), len) == 0)); /* equal contents */
} }
unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) { unsigned int luaS_hash (const char *str, size_t l, unsigned int seed,
unsigned int h = seed ^ cast(unsigned int, l); size_t step) {
size_t step = (l >> LUAI_HASHLIMIT) + 1; unsigned int h = seed ^ cast_uint(l);
for (; l >= step; l -= step) for (; l >= step; l -= step)
h ^= ((h<<5) + (h>>2) + cast_byte(str[l - 1])); h ^= ((h<<5) + (h>>2) + cast_byte(str[l - 1]));
return h; return h;
@ -56,43 +60,58 @@ unsigned int luaS_hash (const char *str, size_t l, unsigned int seed) {
unsigned int luaS_hashlongstr (TString *ts) { unsigned int luaS_hashlongstr (TString *ts) {
lua_assert(ts->tt == LUA_TLNGSTR); lua_assert(ts->tt == LUA_VLNGSTR);
if (ts->extra == 0) { /* no hash? */ if (ts->extra == 0) { /* no hash? */
ts->hash = luaS_hash(getstr(ts), ts->u.lnglen, ts->hash); size_t len = ts->u.lnglen;
size_t step = (len >> LUAI_HASHLIMIT) + 1;
ts->hash = luaS_hash(getstr(ts), len, ts->hash, step);
ts->extra = 1; /* now it has its hash */ ts->extra = 1; /* now it has its hash */
} }
return ts->hash; return ts->hash;
} }
/* static void tablerehash (TString **vect, int osize, int nsize) {
** resizes the string table
*/
void luaS_resize (lua_State *L, int newsize) {
int i; int i;
stringtable *tb = &G(L)->strt; for (i = osize; i < nsize; i++) /* clear new elements */
if (newsize > tb->size) { /* grow table if needed */ vect[i] = NULL;
luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *); for (i = 0; i < osize; i++) { /* rehash old part of the array */
for (i = tb->size; i < newsize; i++) TString *p = vect[i];
tb->hash[i] = NULL; vect[i] = NULL;
} while (p) { /* for each string in the list */
for (i = 0; i < tb->size; i++) { /* rehash */
TString *p = tb->hash[i];
tb->hash[i] = NULL;
while (p) { /* for each node in the list */
TString *hnext = p->u.hnext; /* save next */ TString *hnext = p->u.hnext; /* save next */
unsigned int h = lmod(p->hash, newsize); /* new position */ unsigned int h = lmod(p->hash, nsize); /* new position */
p->u.hnext = tb->hash[h]; /* chain it */ p->u.hnext = vect[h]; /* chain it into array */
tb->hash[h] = p; vect[h] = p;
p = hnext; p = hnext;
} }
} }
if (newsize < tb->size) { /* shrink table if needed */ }
/* vanishing slice should be empty */
lua_assert(tb->hash[newsize] == NULL && tb->hash[tb->size - 1] == NULL);
luaM_reallocvector(L, tb->hash, tb->size, newsize, TString *); /*
** Resize the string table. If allocation fails, keep the current size.
** (This can degrade performance, but any non-zero size should work
** correctly.)
*/
void luaS_resize (lua_State *L, int nsize) {
stringtable *tb = &G(L)->strt;
int osize = tb->size;
TString **newvect;
if (nsize < osize) /* shrinking table? */
tablerehash(tb->hash, osize, nsize); /* depopulate shrinking part */
newvect = luaM_reallocvector(L, tb->hash, osize, nsize, TString*);
if (unlikely(newvect == NULL)) { /* reallocation failed? */
if (nsize < osize) /* was it shrinking table? */
tablerehash(tb->hash, nsize, osize); /* restore to original size */
/* leave table as it was */
}
else { /* allocation succeeded */
tb->hash = newvect;
tb->size = nsize;
if (nsize > osize)
tablerehash(newvect, osize, nsize); /* rehash for new size */
} }
tb->size = newsize;
} }
@ -104,8 +123,8 @@ void luaS_clearcache (global_State *g) {
int i, j; int i, j;
for (i = 0; i < STRCACHE_N; i++) for (i = 0; i < STRCACHE_N; i++)
for (j = 0; j < STRCACHE_M; j++) { for (j = 0; j < STRCACHE_M; j++) {
if (iswhite(g->strcache[i][j])) /* will entry be collected? */ if (iswhite(g->strcache[i][j])) /* will entry be collected? */
g->strcache[i][j] = g->memerrmsg; /* replace it with something fixed */ g->strcache[i][j] = g->memerrmsg; /* replace it with something fixed */
} }
} }
@ -116,7 +135,10 @@ void luaS_clearcache (global_State *g) {
void luaS_init (lua_State *L) { void luaS_init (lua_State *L) {
global_State *g = G(L); global_State *g = G(L);
int i, j; int i, j;
luaS_resize(L, MINSTRTABSIZE); /* initial size of string table */ stringtable *tb = &G(L)->strt;
tb->hash = luaM_newvector(L, MINSTRTABSIZE, TString*);
tablerehash(tb->hash, 0, MINSTRTABSIZE); /* clear array */
tb->size = MINSTRTABSIZE;
/* pre-create memory-error message */ /* pre-create memory-error message */
g->memerrmsg = luaS_newliteral(L, MEMERRMSG); g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */ luaC_fix(L, obj2gco(g->memerrmsg)); /* it should never be collected */
@ -145,7 +167,7 @@ static TString *createstrobj (lua_State *L, size_t l, int tag, unsigned int h) {
TString *luaS_createlngstrobj (lua_State *L, size_t l) { TString *luaS_createlngstrobj (lua_State *L, size_t l) {
TString *ts = createstrobj(L, l, LUA_TLNGSTR, G(L)->seed); TString *ts = createstrobj(L, l, LUA_VLNGSTR, G(L)->seed);
ts->u.lnglen = l; ts->u.lnglen = l;
return ts; return ts;
} }
@ -161,34 +183,46 @@ void luaS_remove (lua_State *L, TString *ts) {
} }
static void growstrtab (lua_State *L, stringtable *tb) {
if (unlikely(tb->nuse == MAX_INT)) { /* too many strings? */
luaC_fullgc(L, 1); /* try to free some... */
if (tb->nuse == MAX_INT) /* still too many? */
luaM_error(L); /* cannot even create a message... */
}
if (tb->size <= MAXSTRTB / 2) /* can grow string table? */
luaS_resize(L, tb->size * 2);
}
/* /*
** checks whether short string exists and reuses it or creates a new one ** Checks whether short string exists and reuses it or creates a new one.
*/ */
static TString *internshrstr (lua_State *L, const char *str, size_t l) { static TString *internshrstr (lua_State *L, const char *str, size_t l) {
TString *ts; TString *ts;
global_State *g = G(L); global_State *g = G(L);
unsigned int h = luaS_hash(str, l, g->seed); stringtable *tb = &g->strt;
TString **list = &g->strt.hash[lmod(h, g->strt.size)]; unsigned int h = luaS_hash(str, l, g->seed, 1);
TString **list = &tb->hash[lmod(h, tb->size)];
lua_assert(str != NULL); /* otherwise 'memcmp'/'memcpy' are undefined */ lua_assert(str != NULL); /* otherwise 'memcmp'/'memcpy' are undefined */
for (ts = *list; ts != NULL; ts = ts->u.hnext) { for (ts = *list; ts != NULL; ts = ts->u.hnext) {
if (l == ts->shrlen && if (l == ts->shrlen && (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
(memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
/* found! */ /* found! */
if (isdead(g, ts)) /* dead (but not collected yet)? */ if (isdead(g, ts)) /* dead (but not collected yet)? */
changewhite(ts); /* resurrect it */ changewhite(ts); /* resurrect it */
return ts; return ts;
} }
} }
if (g->strt.nuse >= g->strt.size && g->strt.size <= MAX_INT/2) { /* else must create a new string */
luaS_resize(L, g->strt.size * 2); if (tb->nuse >= tb->size) { /* need to grow string table? */
list = &g->strt.hash[lmod(h, g->strt.size)]; /* recompute with new size */ growstrtab(L, tb);
list = &tb->hash[lmod(h, tb->size)]; /* rehash with new size */
} }
ts = createstrobj(L, l, LUA_TSHRSTR, h); ts = createstrobj(L, l, LUA_VSHRSTR, h);
memcpy(getstr(ts), str, l * sizeof(char)); memcpy(getstr(ts), str, l * sizeof(char));
ts->shrlen = cast_byte(l); ts->shrlen = cast_byte(l);
ts->u.hnext = *list; ts->u.hnext = *list;
*list = ts; *list = ts;
g->strt.nuse++; tb->nuse++;
return ts; return ts;
} }
@ -201,7 +235,7 @@ TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
return internshrstr(L, str, l); return internshrstr(L, str, l);
else { else {
TString *ts; TString *ts;
if (l >= (MAX_SIZE - sizeof(TString))/sizeof(char)) if (unlikely(l >= (MAX_SIZE - sizeof(TString))/sizeof(char)))
luaM_toobig(L); luaM_toobig(L);
ts = luaS_createlngstrobj(L, l); ts = luaS_createlngstrobj(L, l);
memcpy(getstr(ts), str, l * sizeof(char)); memcpy(getstr(ts), str, l * sizeof(char));
@ -233,16 +267,19 @@ TString *luaS_new (lua_State *L, const char *str) {
} }
Udata *luaS_newudata (lua_State *L, size_t s) { Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue) {
Udata *u; Udata *u;
int i;
GCObject *o; GCObject *o;
if (s > MAX_SIZE - sizeof(Udata)) if (unlikely(s > MAX_SIZE - udatamemoffset(nuvalue)))
luaM_toobig(L); luaM_toobig(L);
o = luaC_newobj(L, LUA_TUSERDATA, sizeludata(s)); o = luaC_newobj(L, LUA_VUSERDATA, sizeudata(nuvalue, s));
u = gco2u(o); u = gco2u(o);
u->len = s; u->len = s;
u->nuvalue = nuvalue;
u->metatable = NULL; u->metatable = NULL;
setuservalue(L, u, luaO_nilobject); for (i = 0; i < nuvalue; i++)
setnilvalue(&u->uv[i].uv);
return u; return u;
} }

25
lua-5.3.3/src/lstring.h → lua-5.4.0/src/lstring.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lstring.h,v 1.61 2015/11/03 15:36:01 roberto Exp $ ** $Id: lstring.h $
** String table (keep all strings handled by Lua) ** String table (keep all strings handled by Lua)
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -12,10 +12,18 @@
#include "lstate.h" #include "lstate.h"
#define sizelstring(l) (sizeof(union UTString) + ((l) + 1) * sizeof(char)) /*
** Memory-allocation error message must be preallocated (it cannot
** be created after memory is exhausted)
*/
#define MEMERRMSG "not enough memory"
#define sizeludata(l) (sizeof(union UUdata) + (l))
#define sizeudata(u) sizeludata((u)->len) /*
** Size of a TString: Size of the header plus space for the string
** itself (including final '\0').
*/
#define sizelstring(l) (offsetof(TString, contents) + ((l) + 1) * sizeof(char))
#define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \ #define luaS_newliteral(L, s) (luaS_newlstr(L, "" s, \
(sizeof(s)/sizeof(char))-1)) (sizeof(s)/sizeof(char))-1))
@ -24,23 +32,24 @@
/* /*
** test whether a string is a reserved word ** test whether a string is a reserved word
*/ */
#define isreserved(s) ((s)->tt == LUA_TSHRSTR && (s)->extra > 0) #define isreserved(s) ((s)->tt == LUA_VSHRSTR && (s)->extra > 0)
/* /*
** equality for short strings, which are always internalized ** equality for short strings, which are always internalized
*/ */
#define eqshrstr(a,b) check_exp((a)->tt == LUA_TSHRSTR, (a) == (b)) #define eqshrstr(a,b) check_exp((a)->tt == LUA_VSHRSTR, (a) == (b))
LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed); LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l,
unsigned int seed, size_t step);
LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts); LUAI_FUNC unsigned int luaS_hashlongstr (TString *ts);
LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b); LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
LUAI_FUNC void luaS_resize (lua_State *L, int newsize); LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
LUAI_FUNC void luaS_clearcache (global_State *g); LUAI_FUNC void luaS_clearcache (global_State *g);
LUAI_FUNC void luaS_init (lua_State *L); LUAI_FUNC void luaS_init (lua_State *L);
LUAI_FUNC void luaS_remove (lua_State *L, TString *ts); LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s); LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, int nuvalue);
LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l); LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);
LUAI_FUNC TString *luaS_new (lua_State *L, const char *str); LUAI_FUNC TString *luaS_new (lua_State *L, const char *str);
LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l); LUAI_FUNC TString *luaS_createlngstrobj (lua_State *L, size_t l);

501
lua-5.3.3/src/lstrlib.c → lua-5.4.0/src/lstrlib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lstrlib.c,v 1.251 2016/05/20 14:13:21 roberto Exp $ ** $Id: lstrlib.c $
** Standard library for string operations and pattern-matching ** Standard library for string operations and pattern-matching
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -14,6 +14,7 @@
#include <float.h> #include <float.h>
#include <limits.h> #include <limits.h>
#include <locale.h> #include <locale.h>
#include <math.h>
#include <stddef.h> #include <stddef.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -59,23 +60,50 @@ static int str_len (lua_State *L) {
} }
/* translate a relative string position: negative means back from end */ /*
static lua_Integer posrelat (lua_Integer pos, size_t len) { ** translate a relative initial string position
if (pos >= 0) return pos; ** (negative means back from end): clip result to [1, inf).
else if (0u - (size_t)pos > len) return 0; ** The length of any string in Lua must fit in a lua_Integer,
else return (lua_Integer)len + pos + 1; ** so there are no overflows in the casts.
** The inverted comparison avoids a possible overflow
** computing '-pos'.
*/
static size_t posrelatI (lua_Integer pos, size_t len) {
if (pos > 0)
return (size_t)pos;
else if (pos == 0)
return 1;
else if (pos < -(lua_Integer)len) /* inverted comparison */
return 1; /* clip to 1 */
else return len + (size_t)pos + 1;
}
/*
** Gets an optional ending string position from argument 'arg',
** with default value 'def'.
** Negative means back from end: clip result to [0, len]
*/
static size_t getendpos (lua_State *L, int arg, lua_Integer def,
size_t len) {
lua_Integer pos = luaL_optinteger(L, arg, def);
if (pos > (lua_Integer)len)
return len;
else if (pos >= 0)
return (size_t)pos;
else if (pos < -(lua_Integer)len)
return 0;
else return len + (size_t)pos + 1;
} }
static int str_sub (lua_State *L) { static int str_sub (lua_State *L) {
size_t l; size_t l;
const char *s = luaL_checklstring(L, 1, &l); const char *s = luaL_checklstring(L, 1, &l);
lua_Integer start = posrelat(luaL_checkinteger(L, 2), l); size_t start = posrelatI(luaL_checkinteger(L, 2), l);
lua_Integer end = posrelat(luaL_optinteger(L, 3, -1), l); size_t end = getendpos(L, 3, -1, l);
if (start < 1) start = 1;
if (end > (lua_Integer)l) end = l;
if (start <= end) if (start <= end)
lua_pushlstring(L, s + start - 1, (size_t)(end - start) + 1); lua_pushlstring(L, s + start - 1, (end - start) + 1);
else lua_pushliteral(L, ""); else lua_pushliteral(L, "");
return 1; return 1;
} }
@ -148,13 +176,12 @@ static int str_rep (lua_State *L) {
static int str_byte (lua_State *L) { static int str_byte (lua_State *L) {
size_t l; size_t l;
const char *s = luaL_checklstring(L, 1, &l); const char *s = luaL_checklstring(L, 1, &l);
lua_Integer posi = posrelat(luaL_optinteger(L, 2, 1), l); lua_Integer pi = luaL_optinteger(L, 2, 1);
lua_Integer pose = posrelat(luaL_optinteger(L, 3, posi), l); size_t posi = posrelatI(pi, l);
size_t pose = getendpos(L, 3, pi, l);
int n, i; int n, i;
if (posi < 1) posi = 1;
if (pose > (lua_Integer)l) pose = l;
if (posi > pose) return 0; /* empty interval; return no values */ if (posi > pose) return 0; /* empty interval; return no values */
if (pose - posi >= INT_MAX) /* arithmetic overflow? */ if (pose - posi >= (size_t)INT_MAX) /* arithmetic overflow? */
return luaL_error(L, "string slice too long"); return luaL_error(L, "string slice too long");
n = (int)(pose - posi) + 1; n = (int)(pose - posi) + 1;
luaL_checkstack(L, n, "string slice too long"); luaL_checkstack(L, n, "string slice too long");
@ -170,8 +197,8 @@ static int str_char (lua_State *L) {
luaL_Buffer b; luaL_Buffer b;
char *p = luaL_buffinitsize(L, &b, n); char *p = luaL_buffinitsize(L, &b, n);
for (i=1; i<=n; i++) { for (i=1; i<=n; i++) {
lua_Integer c = luaL_checkinteger(L, i); lua_Unsigned c = (lua_Unsigned)luaL_checkinteger(L, i);
luaL_argcheck(L, uchar(c) == c, i, "value out of range"); luaL_argcheck(L, c <= (lua_Unsigned)UCHAR_MAX, i, "value out of range");
p[i - 1] = uchar(c); p[i - 1] = uchar(c);
} }
luaL_pushresultsize(&b, n); luaL_pushresultsize(&b, n);
@ -179,27 +206,142 @@ static int str_char (lua_State *L) {
} }
static int writer (lua_State *L, const void *b, size_t size, void *B) { /*
(void)L; ** Buffer to store the result of 'string.dump'. It must be initialized
luaL_addlstring((luaL_Buffer *) B, (const char *)b, size); ** after the call to 'lua_dump', to ensure that the function is on the
** top of the stack when 'lua_dump' is called. ('luaL_buffinit' might
** push stuff.)
*/
struct str_Writer {
int init; /* true iff buffer has been initialized */
luaL_Buffer B;
};
static int writer (lua_State *L, const void *b, size_t size, void *ud) {
struct str_Writer *state = (struct str_Writer *)ud;
if (!state->init) {
state->init = 1;
luaL_buffinit(L, &state->B);
}
luaL_addlstring(&state->B, (const char *)b, size);
return 0; return 0;
} }
static int str_dump (lua_State *L) { static int str_dump (lua_State *L) {
luaL_Buffer b; struct str_Writer state;
int strip = lua_toboolean(L, 2); int strip = lua_toboolean(L, 2);
luaL_checktype(L, 1, LUA_TFUNCTION); luaL_checktype(L, 1, LUA_TFUNCTION);
lua_settop(L, 1); lua_settop(L, 1); /* ensure function is on the top of the stack */
luaL_buffinit(L,&b); state.init = 0;
if (lua_dump(L, writer, &b, strip) != 0) if (lua_dump(L, writer, &state, strip) != 0)
return luaL_error(L, "unable to dump given function"); return luaL_error(L, "unable to dump given function");
luaL_pushresult(&b); luaL_pushresult(&state.B);
return 1; return 1;
} }
/*
** {======================================================
** METAMETHODS
** =======================================================
*/
#if defined(LUA_NOCVTS2N) /* { */
/* no coercion from strings to numbers */
static const luaL_Reg stringmetamethods[] = {
{"__index", NULL}, /* placeholder */
{NULL, NULL}
};
#else /* }{ */
static int tonum (lua_State *L, int arg) {
if (lua_type(L, arg) == LUA_TNUMBER) { /* already a number? */
lua_pushvalue(L, arg);
return 1;
}
else { /* check whether it is a numerical string */
size_t len;
const char *s = lua_tolstring(L, arg, &len);
return (s != NULL && lua_stringtonumber(L, s) == len + 1);
}
}
static void trymt (lua_State *L, const char *mtname) {
lua_settop(L, 2); /* back to the original arguments */
if (lua_type(L, 2) == LUA_TSTRING || !luaL_getmetafield(L, 2, mtname))
luaL_error(L, "attempt to %s a '%s' with a '%s'", mtname + 2,
luaL_typename(L, -2), luaL_typename(L, -1));
lua_insert(L, -3); /* put metamethod before arguments */
lua_call(L, 2, 1); /* call metamethod */
}
static int arith (lua_State *L, int op, const char *mtname) {
if (tonum(L, 1) && tonum(L, 2))
lua_arith(L, op); /* result will be on the top */
else
trymt(L, mtname);
return 1;
}
static int arith_add (lua_State *L) {
return arith(L, LUA_OPADD, "__add");
}
static int arith_sub (lua_State *L) {
return arith(L, LUA_OPSUB, "__sub");
}
static int arith_mul (lua_State *L) {
return arith(L, LUA_OPMUL, "__mul");
}
static int arith_mod (lua_State *L) {
return arith(L, LUA_OPMOD, "__mod");
}
static int arith_pow (lua_State *L) {
return arith(L, LUA_OPPOW, "__pow");
}
static int arith_div (lua_State *L) {
return arith(L, LUA_OPDIV, "__div");
}
static int arith_idiv (lua_State *L) {
return arith(L, LUA_OPIDIV, "__idiv");
}
static int arith_unm (lua_State *L) {
return arith(L, LUA_OPUNM, "__unm");
}
static const luaL_Reg stringmetamethods[] = {
{"__add", arith_add},
{"__sub", arith_sub},
{"__mul", arith_mul},
{"__mod", arith_mod},
{"__pow", arith_pow},
{"__div", arith_div},
{"__idiv", arith_idiv},
{"__unm", arith_unm},
{"__index", NULL}, /* placeholder */
{NULL, NULL}
};
#endif /* } */
/* }====================================================== */
/* /*
** {====================================================== ** {======================================================
** PATTERN MATCHING ** PATTERN MATCHING
@ -547,25 +689,46 @@ static const char *lmemfind (const char *s1, size_t l1,
} }
static void push_onecapture (MatchState *ms, int i, const char *s, /*
const char *e) { ** get information about the i-th capture. If there are no captures
** and 'i==0', return information about the whole match, which
** is the range 's'..'e'. If the capture is a string, return
** its length and put its address in '*cap'. If it is an integer
** (a position), push it on the stack and return CAP_POSITION.
*/
static size_t get_onecapture (MatchState *ms, int i, const char *s,
const char *e, const char **cap) {
if (i >= ms->level) { if (i >= ms->level) {
if (i == 0) /* ms->level == 0, too */ if (i != 0)
lua_pushlstring(ms->L, s, e - s); /* add whole match */
else
luaL_error(ms->L, "invalid capture index %%%d", i + 1); luaL_error(ms->L, "invalid capture index %%%d", i + 1);
*cap = s;
return e - s;
} }
else { else {
ptrdiff_t l = ms->capture[i].len; ptrdiff_t capl = ms->capture[i].len;
if (l == CAP_UNFINISHED) luaL_error(ms->L, "unfinished capture"); *cap = ms->capture[i].init;
if (l == CAP_POSITION) if (capl == CAP_UNFINISHED)
luaL_error(ms->L, "unfinished capture");
else if (capl == CAP_POSITION)
lua_pushinteger(ms->L, (ms->capture[i].init - ms->src_init) + 1); lua_pushinteger(ms->L, (ms->capture[i].init - ms->src_init) + 1);
else return capl;
lua_pushlstring(ms->L, ms->capture[i].init, l);
} }
} }
/*
** Push the i-th capture on the stack.
*/
static void push_onecapture (MatchState *ms, int i, const char *s,
const char *e) {
const char *cap;
ptrdiff_t l = get_onecapture(ms, i, s, e, &cap);
if (l != CAP_POSITION)
lua_pushlstring(ms->L, cap, l);
/* else position was already pushed */
}
static int push_captures (MatchState *ms, const char *s, const char *e) { static int push_captures (MatchState *ms, const char *s, const char *e) {
int i; int i;
int nlevels = (ms->level == 0 && s) ? 1 : ms->level; int nlevels = (ms->level == 0 && s) ? 1 : ms->level;
@ -608,16 +771,15 @@ static int str_find_aux (lua_State *L, int find) {
size_t ls, lp; size_t ls, lp;
const char *s = luaL_checklstring(L, 1, &ls); const char *s = luaL_checklstring(L, 1, &ls);
const char *p = luaL_checklstring(L, 2, &lp); const char *p = luaL_checklstring(L, 2, &lp);
lua_Integer init = posrelat(luaL_optinteger(L, 3, 1), ls); size_t init = posrelatI(luaL_optinteger(L, 3, 1), ls) - 1;
if (init < 1) init = 1; if (init > ls) { /* start after string's end? */
else if (init > (lua_Integer)ls + 1) { /* start after string's end? */ luaL_pushfail(L); /* cannot find anything */
lua_pushnil(L); /* cannot find anything */
return 1; return 1;
} }
/* explicit request or no special characters? */ /* explicit request or no special characters? */
if (find && (lua_toboolean(L, 4) || nospecials(p, lp))) { if (find && (lua_toboolean(L, 4) || nospecials(p, lp))) {
/* do a plain search */ /* do a plain search */
const char *s2 = lmemfind(s + init - 1, ls - (size_t)init + 1, p, lp); const char *s2 = lmemfind(s + init, ls - init, p, lp);
if (s2) { if (s2) {
lua_pushinteger(L, (s2 - s) + 1); lua_pushinteger(L, (s2 - s) + 1);
lua_pushinteger(L, (s2 - s) + lp); lua_pushinteger(L, (s2 - s) + lp);
@ -626,7 +788,7 @@ static int str_find_aux (lua_State *L, int find) {
} }
else { else {
MatchState ms; MatchState ms;
const char *s1 = s + init - 1; const char *s1 = s + init;
int anchor = (*p == '^'); int anchor = (*p == '^');
if (anchor) { if (anchor) {
p++; lp--; /* skip anchor character */ p++; lp--; /* skip anchor character */
@ -646,7 +808,7 @@ static int str_find_aux (lua_State *L, int find) {
} }
} while (s1++ < ms.src_end && !anchor); } while (s1++ < ms.src_end && !anchor);
} }
lua_pushnil(L); /* not found */ luaL_pushfail(L); /* not found */
return 1; return 1;
} }
@ -690,11 +852,14 @@ static int gmatch (lua_State *L) {
size_t ls, lp; size_t ls, lp;
const char *s = luaL_checklstring(L, 1, &ls); const char *s = luaL_checklstring(L, 1, &ls);
const char *p = luaL_checklstring(L, 2, &lp); const char *p = luaL_checklstring(L, 2, &lp);
size_t init = posrelatI(luaL_optinteger(L, 3, 1), ls) - 1;
GMatchState *gm; GMatchState *gm;
lua_settop(L, 2); /* keep them on closure to avoid being collected */ lua_settop(L, 2); /* keep strings on closure to avoid being collected */
gm = (GMatchState *)lua_newuserdata(L, sizeof(GMatchState)); gm = (GMatchState *)lua_newuserdatauv(L, sizeof(GMatchState), 0);
if (init > ls) /* start after string's end? */
init = ls + 1; /* avoid overflows in 's + init' */
prepstate(&gm->ms, L, s, ls, p, lp); prepstate(&gm->ms, L, s, ls, p, lp);
gm->src = s; gm->p = p; gm->lastmatch = NULL; gm->src = s + init; gm->p = p; gm->lastmatch = NULL;
lua_pushcclosure(L, gmatch_aux, 3); lua_pushcclosure(L, gmatch_aux, 3);
return 1; return 1;
} }
@ -702,60 +867,72 @@ static int gmatch (lua_State *L) {
static void add_s (MatchState *ms, luaL_Buffer *b, const char *s, static void add_s (MatchState *ms, luaL_Buffer *b, const char *s,
const char *e) { const char *e) {
size_t l, i; size_t l;
lua_State *L = ms->L; lua_State *L = ms->L;
const char *news = lua_tolstring(L, 3, &l); const char *news = lua_tolstring(L, 3, &l);
for (i = 0; i < l; i++) { const char *p;
if (news[i] != L_ESC) while ((p = (char *)memchr(news, L_ESC, l)) != NULL) {
luaL_addchar(b, news[i]); luaL_addlstring(b, news, p - news);
else { p++; /* skip ESC */
i++; /* skip ESC */ if (*p == L_ESC) /* '%%' */
if (!isdigit(uchar(news[i]))) { luaL_addchar(b, *p);
if (news[i] != L_ESC) else if (*p == '0') /* '%0' */
luaL_error(L, "invalid use of '%c' in replacement string", L_ESC); luaL_addlstring(b, s, e - s);
luaL_addchar(b, news[i]); else if (isdigit(uchar(*p))) { /* '%n' */
} const char *cap;
else if (news[i] == '0') ptrdiff_t resl = get_onecapture(ms, *p - '1', s, e, &cap);
luaL_addlstring(b, s, e - s); if (resl == CAP_POSITION)
else { luaL_addvalue(b); /* add position to accumulated result */
push_onecapture(ms, news[i] - '1', s, e); else
luaL_tolstring(L, -1, NULL); /* if number, convert it to string */ luaL_addlstring(b, cap, resl);
lua_remove(L, -2); /* remove original value */
luaL_addvalue(b); /* add capture to accumulated result */
}
} }
else
luaL_error(L, "invalid use of '%c' in replacement string", L_ESC);
l -= p + 1 - news;
news = p + 1;
} }
luaL_addlstring(b, news, l);
} }
static void add_value (MatchState *ms, luaL_Buffer *b, const char *s, /*
const char *e, int tr) { ** Add the replacement value to the string buffer 'b'.
** Return true if the original string was changed. (Function calls and
** table indexing resulting in nil or false do not change the subject.)
*/
static int add_value (MatchState *ms, luaL_Buffer *b, const char *s,
const char *e, int tr) {
lua_State *L = ms->L; lua_State *L = ms->L;
switch (tr) { switch (tr) {
case LUA_TFUNCTION: { case LUA_TFUNCTION: { /* call the function */
int n; int n;
lua_pushvalue(L, 3); lua_pushvalue(L, 3); /* push the function */
n = push_captures(ms, s, e); n = push_captures(ms, s, e); /* all captures as arguments */
lua_call(L, n, 1); lua_call(L, n, 1); /* call it */
break; break;
} }
case LUA_TTABLE: { case LUA_TTABLE: { /* index the table */
push_onecapture(ms, 0, s, e); push_onecapture(ms, 0, s, e); /* first capture is the index */
lua_gettable(L, 3); lua_gettable(L, 3);
break; break;
} }
default: { /* LUA_TNUMBER or LUA_TSTRING */ default: { /* LUA_TNUMBER or LUA_TSTRING */
add_s(ms, b, s, e); add_s(ms, b, s, e); /* add value to the buffer */
return; return 1; /* something changed */
} }
} }
if (!lua_toboolean(L, -1)) { /* nil or false? */ if (!lua_toboolean(L, -1)) { /* nil or false? */
lua_pop(L, 1); lua_pop(L, 1); /* remove value */
lua_pushlstring(L, s, e - s); /* keep original text */ luaL_addlstring(b, s, e - s); /* keep original text */
return 0; /* no changes */
} }
else if (!lua_isstring(L, -1)) else if (!lua_isstring(L, -1))
luaL_error(L, "invalid replacement value (a %s)", luaL_typename(L, -1)); return luaL_error(L, "invalid replacement value (a %s)",
luaL_addvalue(b); /* add result to accumulator */ luaL_typename(L, -1));
else {
luaL_addvalue(b); /* add result to accumulator */
return 1; /* something changed */
}
} }
@ -768,11 +945,12 @@ static int str_gsub (lua_State *L) {
lua_Integer max_s = luaL_optinteger(L, 4, srcl + 1); /* max replacements */ lua_Integer max_s = luaL_optinteger(L, 4, srcl + 1); /* max replacements */
int anchor = (*p == '^'); int anchor = (*p == '^');
lua_Integer n = 0; /* replacement count */ lua_Integer n = 0; /* replacement count */
int changed = 0; /* change flag */
MatchState ms; MatchState ms;
luaL_Buffer b; luaL_Buffer b;
luaL_argcheck(L, tr == LUA_TNUMBER || tr == LUA_TSTRING || luaL_argexpected(L, tr == LUA_TNUMBER || tr == LUA_TSTRING ||
tr == LUA_TFUNCTION || tr == LUA_TTABLE, 3, tr == LUA_TFUNCTION || tr == LUA_TTABLE, 3,
"string/function/table expected"); "string/function/table");
luaL_buffinit(L, &b); luaL_buffinit(L, &b);
if (anchor) { if (anchor) {
p++; lp--; /* skip anchor character */ p++; lp--; /* skip anchor character */
@ -783,7 +961,7 @@ static int str_gsub (lua_State *L) {
reprepstate(&ms); /* (re)prepare state for new match */ reprepstate(&ms); /* (re)prepare state for new match */
if ((e = match(&ms, src, p)) != NULL && e != lastmatch) { /* match? */ if ((e = match(&ms, src, p)) != NULL && e != lastmatch) { /* match? */
n++; n++;
add_value(&ms, &b, src, e, tr); /* add replacement to buffer */ changed = add_value(&ms, &b, src, e, tr) | changed;
src = lastmatch = e; src = lastmatch = e;
} }
else if (src < ms.src_end) /* otherwise, skip one character */ else if (src < ms.src_end) /* otherwise, skip one character */
@ -791,8 +969,12 @@ static int str_gsub (lua_State *L) {
else break; /* end of subject */ else break; /* end of subject */
if (anchor) break; if (anchor) break;
} }
luaL_addlstring(&b, src, ms.src_end-src); if (!changed) /* no changes? */
luaL_pushresult(&b); lua_pushvalue(L, 1); /* return original string */
else { /* something changed */
luaL_addlstring(&b, src, ms.src_end-src);
luaL_pushresult(&b); /* create and return new string */
}
lua_pushinteger(L, n); /* number of substitutions */ lua_pushinteger(L, n); /* number of substitutions */
return 2; return 2;
} }
@ -813,8 +995,6 @@ static int str_gsub (lua_State *L) {
** Hexadecimal floating-point formatter ** Hexadecimal floating-point formatter
*/ */
#include <math.h>
#define SIZELENMOD (sizeof(LUA_NUMBER_FRMLEN)/sizeof(char)) #define SIZELENMOD (sizeof(LUA_NUMBER_FRMLEN)/sizeof(char))
@ -824,7 +1004,7 @@ static int str_gsub (lua_State *L) {
** to nibble boundaries by making what is left after that first digit a ** to nibble boundaries by making what is left after that first digit a
** multiple of 4. ** multiple of 4.
*/ */
#define L_NBFD ((l_mathlim(MANT_DIG) - 1)%4 + 1) #define L_NBFD ((l_floatatt(MANT_DIG) - 1)%4 + 1)
/* /*
@ -839,18 +1019,19 @@ static lua_Number adddigit (char *buff, int n, lua_Number x) {
static int num2straux (char *buff, int sz, lua_Number x) { static int num2straux (char *buff, int sz, lua_Number x) {
if (x != x || x == HUGE_VAL || x == -HUGE_VAL) /* inf or NaN? */ /* if 'inf' or 'NaN', format it like '%g' */
return l_sprintf(buff, sz, LUA_NUMBER_FMT, x); /* equal to '%g' */ if (x != x || x == (lua_Number)HUGE_VAL || x == -(lua_Number)HUGE_VAL)
return l_sprintf(buff, sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)x);
else if (x == 0) { /* can be -0... */ else if (x == 0) { /* can be -0... */
/* create "0" or "-0" followed by exponent */ /* create "0" or "-0" followed by exponent */
return l_sprintf(buff, sz, LUA_NUMBER_FMT "x0p+0", x); return l_sprintf(buff, sz, LUA_NUMBER_FMT "x0p+0", (LUAI_UACNUMBER)x);
} }
else { else {
int e; int e;
lua_Number m = l_mathop(frexp)(x, &e); /* 'x' fraction and exponent */ lua_Number m = l_mathop(frexp)(x, &e); /* 'x' fraction and exponent */
int n = 0; /* character count */ int n = 0; /* character count */
if (m < 0) { /* is number negative? */ if (m < 0) { /* is number negative? */
buff[n++] = '-'; /* add signal */ buff[n++] = '-'; /* add sign */
m = -m; /* make it positive */ m = -m; /* make it positive */
} }
buff[n++] = '0'; buff[n++] = 'x'; /* add "0x" */ buff[n++] = '0'; buff[n++] = 'x'; /* add "0x" */
@ -878,7 +1059,7 @@ static int lua_number2strx (lua_State *L, char *buff, int sz,
buff[i] = toupper(uchar(buff[i])); buff[i] = toupper(uchar(buff[i]));
} }
else if (fmt[SIZELENMOD] != 'a') else if (fmt[SIZELENMOD] != 'a')
luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented"); return luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented");
return n; return n;
} }
@ -886,17 +1067,30 @@ static int lua_number2strx (lua_State *L, char *buff, int sz,
/* /*
** Maximum size of each formatted item. This maximum size is produced ** Maximum size for items formatted with '%f'. This size is produced
** by format('%.99f', -maxfloat), and is equal to 99 + 3 ('-', '.', ** by format('%.99f', -maxfloat), and is equal to 99 + 3 ('-', '.',
** and '\0') + number of decimal digits to represent maxfloat (which ** and '\0') + number of decimal digits to represent maxfloat (which
** is maximum exponent + 1). (99+3+1 then rounded to 120 for "extra ** is maximum exponent + 1). (99+3+1, adding some extra, 110)
** expenses", such as locale-dependent stuff)
*/ */
#define MAX_ITEM (120 + l_mathlim(MAX_10_EXP)) #define MAX_ITEMF (110 + l_floatatt(MAX_10_EXP))
/*
** All formats except '%f' do not need that large limit. The other
** float formats use exponents, so that they fit in the 99 limit for
** significant digits; 's' for large strings and 'q' add items directly
** to the buffer; all integer formats also fit in the 99 limit. The
** worst case are floats: they may need 99 significant digits, plus
** '0x', '-', '.', 'e+XXXX', and '\0'. Adding some extra, 120.
*/
#define MAX_ITEM 120
/* valid flags in a format specification */ /* valid flags in a format specification */
#define FLAGS "-+ #0" #if !defined(L_FMTFLAGS)
#define L_FMTFLAGS "-+ #0"
#endif
/* /*
** maximum size of each format specification (such as "%-099.99d") ** maximum size of each format specification (such as "%-099.99d")
@ -928,14 +1122,32 @@ static void addquoted (luaL_Buffer *b, const char *s, size_t len) {
/* /*
** Ensures the 'buff' string uses a dot as the radix character. ** Serialize a floating-point number in such a way that it can be
** scanned back by Lua. Use hexadecimal format for "common" numbers
** (to preserve precision); inf, -inf, and NaN are handled separately.
** (NaN cannot be expressed as a numeral, so we write '(0/0)' for it.)
*/ */
static void checkdp (char *buff, int nb) { static int quotefloat (lua_State *L, char *buff, lua_Number n) {
if (memchr(buff, '.', nb) == NULL) { /* no dot? */ const char *s; /* for the fixed representations */
char point = lua_getlocaledecpoint(); /* try locale point */ if (n == (lua_Number)HUGE_VAL) /* inf? */
char *ppoint = memchr(buff, point, nb); s = "1e9999";
if (ppoint) *ppoint = '.'; /* change it to a dot */ else if (n == -(lua_Number)HUGE_VAL) /* -inf? */
s = "-1e9999";
else if (n != n) /* NaN? */
s = "(0/0)";
else { /* format number as hexadecimal */
int nb = lua_number2strx(L, buff, MAX_ITEM,
"%" LUA_NUMBER_FRMLEN "a", n);
/* ensures that 'buff' string uses a dot as the radix character */
if (memchr(buff, '.', nb) == NULL) { /* no dot? */
char point = lua_getlocaledecpoint(); /* try locale point */
char *ppoint = (char *)memchr(buff, point, nb);
if (ppoint) *ppoint = '.'; /* change it to a dot */
}
return nb;
} }
/* for the fixed representations */
return l_sprintf(buff, MAX_ITEM, "%s", s);
} }
@ -950,17 +1162,14 @@ static void addliteral (lua_State *L, luaL_Buffer *b, int arg) {
case LUA_TNUMBER: { case LUA_TNUMBER: {
char *buff = luaL_prepbuffsize(b, MAX_ITEM); char *buff = luaL_prepbuffsize(b, MAX_ITEM);
int nb; int nb;
if (!lua_isinteger(L, arg)) { /* float? */ if (!lua_isinteger(L, arg)) /* float? */
lua_Number n = lua_tonumber(L, arg); /* write as hexa ('%a') */ nb = quotefloat(L, buff, lua_tonumber(L, arg));
nb = lua_number2strx(L, buff, MAX_ITEM, "%" LUA_NUMBER_FRMLEN "a", n);
checkdp(buff, nb); /* ensure it uses a dot */
}
else { /* integers */ else { /* integers */
lua_Integer n = lua_tointeger(L, arg); lua_Integer n = lua_tointeger(L, arg);
const char *format = (n == LUA_MININTEGER) /* corner case? */ const char *format = (n == LUA_MININTEGER) /* corner case? */
? "0x%" LUA_INTEGER_FRMLEN "x" /* use hexa */ ? "0x%" LUA_INTEGER_FRMLEN "x" /* use hex */
: LUA_INTEGER_FMT; /* else use default format */ : LUA_INTEGER_FMT; /* else use default format */
nb = l_sprintf(buff, MAX_ITEM, format, n); nb = l_sprintf(buff, MAX_ITEM, format, (LUAI_UACINT)n);
} }
luaL_addsize(b, nb); luaL_addsize(b, nb);
break; break;
@ -979,8 +1188,8 @@ static void addliteral (lua_State *L, luaL_Buffer *b, int arg) {
static const char *scanformat (lua_State *L, const char *strfrmt, char *form) { static const char *scanformat (lua_State *L, const char *strfrmt, char *form) {
const char *p = strfrmt; const char *p = strfrmt;
while (*p != '\0' && strchr(FLAGS, *p) != NULL) p++; /* skip flags */ while (*p != '\0' && strchr(L_FMTFLAGS, *p) != NULL) p++; /* skip flags */
if ((size_t)(p - strfrmt) >= sizeof(FLAGS)/sizeof(char)) if ((size_t)(p - strfrmt) >= sizeof(L_FMTFLAGS)/sizeof(char))
luaL_error(L, "invalid format (repeated flags)"); luaL_error(L, "invalid format (repeated flags)");
if (isdigit(uchar(*p))) p++; /* skip width */ if (isdigit(uchar(*p))) p++; /* skip width */
if (isdigit(uchar(*p))) p++; /* (2 digits at most) */ if (isdigit(uchar(*p))) p++; /* (2 digits at most) */
@ -1027,35 +1236,51 @@ static int str_format (lua_State *L) {
luaL_addchar(&b, *strfrmt++); /* %% */ luaL_addchar(&b, *strfrmt++); /* %% */
else { /* format item */ else { /* format item */
char form[MAX_FORMAT]; /* to store the format ('%...') */ char form[MAX_FORMAT]; /* to store the format ('%...') */
char *buff = luaL_prepbuffsize(&b, MAX_ITEM); /* to put formatted item */ int maxitem = MAX_ITEM;
char *buff = luaL_prepbuffsize(&b, maxitem); /* to put formatted item */
int nb = 0; /* number of bytes in added item */ int nb = 0; /* number of bytes in added item */
if (++arg > top) if (++arg > top)
luaL_argerror(L, arg, "no value"); return luaL_argerror(L, arg, "no value");
strfrmt = scanformat(L, strfrmt, form); strfrmt = scanformat(L, strfrmt, form);
switch (*strfrmt++) { switch (*strfrmt++) {
case 'c': { case 'c': {
nb = l_sprintf(buff, MAX_ITEM, form, (int)luaL_checkinteger(L, arg)); nb = l_sprintf(buff, maxitem, form, (int)luaL_checkinteger(L, arg));
break; break;
} }
case 'd': case 'i': case 'd': case 'i':
case 'o': case 'u': case 'x': case 'X': { case 'o': case 'u': case 'x': case 'X': {
lua_Integer n = luaL_checkinteger(L, arg); lua_Integer n = luaL_checkinteger(L, arg);
addlenmod(form, LUA_INTEGER_FRMLEN); addlenmod(form, LUA_INTEGER_FRMLEN);
nb = l_sprintf(buff, MAX_ITEM, form, n); nb = l_sprintf(buff, maxitem, form, (LUAI_UACINT)n);
break; break;
} }
case 'a': case 'A': case 'a': case 'A':
addlenmod(form, LUA_NUMBER_FRMLEN); addlenmod(form, LUA_NUMBER_FRMLEN);
nb = lua_number2strx(L, buff, MAX_ITEM, form, nb = lua_number2strx(L, buff, maxitem, form,
luaL_checknumber(L, arg)); luaL_checknumber(L, arg));
break; break;
case 'e': case 'E': case 'f': case 'f':
case 'g': case 'G': { maxitem = MAX_ITEMF; /* extra space for '%f' */
buff = luaL_prepbuffsize(&b, maxitem);
/* FALLTHROUGH */
case 'e': case 'E': case 'g': case 'G': {
lua_Number n = luaL_checknumber(L, arg);
addlenmod(form, LUA_NUMBER_FRMLEN); addlenmod(form, LUA_NUMBER_FRMLEN);
nb = l_sprintf(buff, MAX_ITEM, form, luaL_checknumber(L, arg)); nb = l_sprintf(buff, maxitem, form, (LUAI_UACNUMBER)n);
break;
}
case 'p': {
const void *p = lua_topointer(L, arg);
if (p == NULL) { /* avoid calling 'printf' with argument NULL */
p = "(null)"; /* result */
form[strlen(form) - 1] = 's'; /* format it as a string */
}
nb = l_sprintf(buff, maxitem, form, p);
break; break;
} }
case 'q': { case 'q': {
if (form[2] != '\0') /* modifiers? */
return luaL_error(L, "specifier '%%q' cannot have modifiers");
addliteral(L, &b, arg); addliteral(L, &b, arg);
break; break;
} }
@ -1071,18 +1296,17 @@ static int str_format (lua_State *L) {
luaL_addvalue(&b); /* keep entire string */ luaL_addvalue(&b); /* keep entire string */
} }
else { /* format the string into 'buff' */ else { /* format the string into 'buff' */
nb = l_sprintf(buff, MAX_ITEM, form, s); nb = l_sprintf(buff, maxitem, form, s);
lua_pop(L, 1); /* remove result from 'luaL_tolstring' */ lua_pop(L, 1); /* remove result from 'luaL_tolstring' */
} }
} }
break; break;
} }
default: { /* also treat cases 'pnLlh' */ default: { /* also treat cases 'pnLlh' */
return luaL_error(L, "invalid option '%%%c' to 'format'", return luaL_error(L, "invalid conversion '%s' to 'format'", form);
*(strfrmt - 1));
} }
} }
lua_assert(nb < MAX_ITEM); lua_assert(nb < maxitem);
luaL_addsize(&b, nb); luaL_addsize(&b, nb);
} }
} }
@ -1197,8 +1421,8 @@ static int getnum (const char **fmt, int df) {
static int getnumlimit (Header *h, const char **fmt, int df) { static int getnumlimit (Header *h, const char **fmt, int df) {
int sz = getnum(fmt, df); int sz = getnum(fmt, df);
if (sz > MAXINTSIZE || sz <= 0) if (sz > MAXINTSIZE || sz <= 0)
luaL_error(h->L, "integral size (%d) out of limits [1,%d]", return luaL_error(h->L, "integral size (%d) out of limits [1,%d]",
sz, MAXINTSIZE); sz, MAXINTSIZE);
return sz; return sz;
} }
@ -1259,7 +1483,7 @@ static KOption getoption (Header *h, const char **fmt, int *size) {
** 'psize' is filled with option's size, 'notoalign' with its ** 'psize' is filled with option's size, 'notoalign' with its
** alignment requirements. ** alignment requirements.
** Local variable 'size' gets the size to be aligned. (Kpadal option ** Local variable 'size' gets the size to be aligned. (Kpadal option
** always gets its full alignment, other options are limited by ** always gets its full alignment, other options are limited by
** the maximum alignment ('maxalign'). Kchar option needs no alignment ** the maximum alignment ('maxalign'). Kchar option needs no alignment
** despite its size. ** despite its size.
*/ */
@ -1420,17 +1644,12 @@ static int str_packsize (lua_State *L) {
while (*fmt != '\0') { while (*fmt != '\0') {
int size, ntoalign; int size, ntoalign;
KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign); KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign);
luaL_argcheck(L, opt != Kstring && opt != Kzstr, 1,
"variable-length format");
size += ntoalign; /* total space used by option */ size += ntoalign; /* total space used by option */
luaL_argcheck(L, totalsize <= MAXSIZE - size, 1, luaL_argcheck(L, totalsize <= MAXSIZE - size, 1,
"format result too large"); "format result too large");
totalsize += size; totalsize += size;
switch (opt) {
case Kstring: /* strings with length count */
case Kzstr: /* zero-terminated string */
luaL_argerror(L, 1, "variable-length format");
/* call never return, but to avoid warnings: *//* FALLTHROUGH */
default: break;
}
} }
lua_pushinteger(L, (lua_Integer)totalsize); lua_pushinteger(L, (lua_Integer)totalsize);
return 1; return 1;
@ -1476,15 +1695,15 @@ static int str_unpack (lua_State *L) {
const char *fmt = luaL_checkstring(L, 1); const char *fmt = luaL_checkstring(L, 1);
size_t ld; size_t ld;
const char *data = luaL_checklstring(L, 2, &ld); const char *data = luaL_checklstring(L, 2, &ld);
size_t pos = (size_t)posrelat(luaL_optinteger(L, 3, 1), ld) - 1; size_t pos = posrelatI(luaL_optinteger(L, 3, 1), ld) - 1;
int n = 0; /* number of results */ int n = 0; /* number of results */
luaL_argcheck(L, pos <= ld, 3, "initial position out of string"); luaL_argcheck(L, pos <= ld, 3, "initial position out of string");
initheader(L, &h); initheader(L, &h);
while (*fmt != '\0') { while (*fmt != '\0') {
int size, ntoalign; int size, ntoalign;
KOption opt = getdetails(&h, pos, &fmt, &size, &ntoalign); KOption opt = getdetails(&h, pos, &fmt, &size, &ntoalign);
if ((size_t)ntoalign + size > ~pos || pos + ntoalign + size > ld) luaL_argcheck(L, (size_t)ntoalign + size <= ld - pos, 2,
luaL_argerror(L, 2, "data string too short"); "data string too short");
pos += ntoalign; /* skip alignment */ pos += ntoalign; /* skip alignment */
/* stack space for item + next position */ /* stack space for item + next position */
luaL_checkstack(L, 2, "too many results"); luaL_checkstack(L, 2, "too many results");
@ -1513,13 +1732,15 @@ static int str_unpack (lua_State *L) {
} }
case Kstring: { case Kstring: {
size_t len = (size_t)unpackint(L, data + pos, h.islittle, size, 0); size_t len = (size_t)unpackint(L, data + pos, h.islittle, size, 0);
luaL_argcheck(L, pos + len + size <= ld, 2, "data string too short"); luaL_argcheck(L, len <= ld - pos - size, 2, "data string too short");
lua_pushlstring(L, data + pos + size, len); lua_pushlstring(L, data + pos + size, len);
pos += len; /* skip string */ pos += len; /* skip string */
break; break;
} }
case Kzstr: { case Kzstr: {
size_t len = (int)strlen(data + pos); size_t len = (int)strlen(data + pos);
luaL_argcheck(L, pos + len < ld, 2,
"unfinished string for format 'z'");
lua_pushlstring(L, data + pos, len); lua_pushlstring(L, data + pos, len);
pos += len + 1; /* skip string plus final '\0' */ pos += len + 1; /* skip string plus final '\0' */
break; break;
@ -1560,7 +1781,9 @@ static const luaL_Reg strlib[] = {
static void createmetatable (lua_State *L) { static void createmetatable (lua_State *L) {
lua_createtable(L, 0, 1); /* table to be metatable for strings */ /* table to be metatable for strings */
luaL_newlibtable(L, stringmetamethods);
luaL_setfuncs(L, stringmetamethods, 0);
lua_pushliteral(L, ""); /* dummy string */ lua_pushliteral(L, ""); /* dummy string */
lua_pushvalue(L, -2); /* copy table */ lua_pushvalue(L, -2); /* copy table */
lua_setmetatable(L, -2); /* set table as metatable for strings */ lua_setmetatable(L, -2); /* set table as metatable for strings */

924
lua-5.4.0/src/ltable.c Normal file
View File

@ -0,0 +1,924 @@
/*
** $Id: ltable.c $
** Lua tables (hash)
** See Copyright Notice in lua.h
*/
#define ltable_c
#define LUA_CORE
#include "lprefix.h"
/*
** Implementation of tables (aka arrays, objects, or hash tables).
** Tables keep its elements in two parts: an array part and a hash part.
** Non-negative integer keys are all candidates to be kept in the array
** part. The actual size of the array is the largest 'n' such that
** more than half the slots between 1 and n are in use.
** Hash uses a mix of chained scatter table with Brent's variation.
** A main invariant of these tables is that, if an element is not
** in its main position (i.e. the 'original' position that its hash gives
** to it), then the colliding element is in its own main position.
** Hence even when the load factor reaches 100%, performance remains good.
*/
#include <math.h>
#include <limits.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "lvm.h"
/*
** MAXABITS is the largest integer such that MAXASIZE fits in an
** unsigned int.
*/
#define MAXABITS cast_int(sizeof(int) * CHAR_BIT - 1)
/*
** MAXASIZE is the maximum size of the array part. It is the minimum
** between 2^MAXABITS and the maximum size that, measured in bytes,
** fits in a 'size_t'.
*/
#define MAXASIZE luaM_limitN(1u << MAXABITS, TValue)
/*
** MAXHBITS is the largest integer such that 2^MAXHBITS fits in a
** signed int.
*/
#define MAXHBITS (MAXABITS - 1)
/*
** MAXHSIZE is the maximum size of the hash part. It is the minimum
** between 2^MAXHBITS and the maximum size such that, measured in bytes,
** it fits in a 'size_t'.
*/
#define MAXHSIZE luaM_limitN(1u << MAXHBITS, Node)
#define hashpow2(t,n) (gnode(t, lmod((n), sizenode(t))))
#define hashstr(t,str) hashpow2(t, (str)->hash)
#define hashboolean(t,p) hashpow2(t, p)
#define hashint(t,i) hashpow2(t, i)
/*
** for some types, it is better to avoid modulus by power of 2, as
** they tend to have many 2 factors.
*/
#define hashmod(t,n) (gnode(t, ((n) % ((sizenode(t)-1)|1))))
#define hashpointer(t,p) hashmod(t, point2uint(p))
#define dummynode (&dummynode_)
static const Node dummynode_ = {
{{NULL}, LUA_VEMPTY, /* value's value and type */
LUA_VNIL, 0, {NULL}} /* key type, next, and key value */
};
static const TValue absentkey = {ABSTKEYCONSTANT};
/*
** Hash for floating-point numbers.
** The main computation should be just
** n = frexp(n, &i); return (n * INT_MAX) + i
** but there are some numerical subtleties.
** In a two-complement representation, INT_MAX does not has an exact
** representation as a float, but INT_MIN does; because the absolute
** value of 'frexp' is smaller than 1 (unless 'n' is inf/NaN), the
** absolute value of the product 'frexp * -INT_MIN' is smaller or equal
** to INT_MAX. Next, the use of 'unsigned int' avoids overflows when
** adding 'i'; the use of '~u' (instead of '-u') avoids problems with
** INT_MIN.
*/
#if !defined(l_hashfloat)
static int l_hashfloat (lua_Number n) {
int i;
lua_Integer ni;
n = l_mathop(frexp)(n, &i) * -cast_num(INT_MIN);
if (!lua_numbertointeger(n, &ni)) { /* is 'n' inf/-inf/NaN? */
lua_assert(luai_numisnan(n) || l_mathop(fabs)(n) == cast_num(HUGE_VAL));
return 0;
}
else { /* normal case */
unsigned int u = cast_uint(i) + cast_uint(ni);
return cast_int(u <= cast_uint(INT_MAX) ? u : ~u);
}
}
#endif
/*
** returns the 'main' position of an element in a table (that is,
** the index of its hash value). The key comes broken (tag in 'ktt'
** and value in 'vkl') so that we can call it on keys inserted into
** nodes.
*/
static Node *mainposition (const Table *t, int ktt, const Value *kvl) {
switch (withvariant(ktt)) {
case LUA_VNUMINT:
return hashint(t, ivalueraw(*kvl));
case LUA_VNUMFLT:
return hashmod(t, l_hashfloat(fltvalueraw(*kvl)));
case LUA_VSHRSTR:
return hashstr(t, tsvalueraw(*kvl));
case LUA_VLNGSTR:
return hashpow2(t, luaS_hashlongstr(tsvalueraw(*kvl)));
case LUA_VFALSE:
return hashboolean(t, 0);
case LUA_VTRUE:
return hashboolean(t, 1);
case LUA_VLIGHTUSERDATA:
return hashpointer(t, pvalueraw(*kvl));
case LUA_VLCF:
return hashpointer(t, fvalueraw(*kvl));
default:
return hashpointer(t, gcvalueraw(*kvl));
}
}
/*
** Returns the main position of an element given as a 'TValue'
*/
static Node *mainpositionTV (const Table *t, const TValue *key) {
return mainposition(t, rawtt(key), valraw(key));
}
/*
** Check whether key 'k1' is equal to the key in node 'n2'.
** This equality is raw, so there are no metamethods. Floats
** with integer values have been normalized, so integers cannot
** be equal to floats. It is assumed that 'eqshrstr' is simply
** pointer equality, so that short strings are handled in the
** default case.
*/
static int equalkey (const TValue *k1, const Node *n2) {
if (rawtt(k1) != keytt(n2)) /* not the same variants? */
return 0; /* cannot be same key */
switch (ttypetag(k1)) {
case LUA_VNIL: case LUA_VFALSE: case LUA_VTRUE:
return 1;
case LUA_VNUMINT:
return (ivalue(k1) == keyival(n2));
case LUA_VNUMFLT:
return luai_numeq(fltvalue(k1), fltvalueraw(keyval(n2)));
case LUA_VLIGHTUSERDATA:
return pvalue(k1) == pvalueraw(keyval(n2));
case LUA_VLCF:
return fvalue(k1) == fvalueraw(keyval(n2));
case LUA_VLNGSTR:
return luaS_eqlngstr(tsvalue(k1), keystrval(n2));
default:
return gcvalue(k1) == gcvalueraw(keyval(n2));
}
}
/*
** True if value of 'alimit' is equal to the real size of the array
** part of table 't'. (Otherwise, the array part must be larger than
** 'alimit'.)
*/
#define limitequalsasize(t) (isrealasize(t) || ispow2((t)->alimit))
/*
** Returns the real size of the 'array' array
*/
LUAI_FUNC unsigned int luaH_realasize (const Table *t) {
if (limitequalsasize(t))
return t->alimit; /* this is the size */
else {
unsigned int size = t->alimit;
/* compute the smallest power of 2 not smaller than 'n' */
size |= (size >> 1);
size |= (size >> 2);
size |= (size >> 4);
size |= (size >> 8);
size |= (size >> 16);
#if (UINT_MAX >> 30) > 3
size |= (size >> 32); /* unsigned int has more than 32 bits */
#endif
size++;
lua_assert(ispow2(size) && size/2 < t->alimit && t->alimit < size);
return size;
}
}
/*
** Check whether real size of the array is a power of 2.
** (If it is not, 'alimit' cannot be changed to any other value
** without changing the real size.)
*/
static int ispow2realasize (const Table *t) {
return (!isrealasize(t) || ispow2(t->alimit));
}
static unsigned int setlimittosize (Table *t) {
t->alimit = luaH_realasize(t);
setrealasize(t);
return t->alimit;
}
#define limitasasize(t) check_exp(isrealasize(t), t->alimit)
/*
** "Generic" get version. (Not that generic: not valid for integers,
** which may be in array part, nor for floats with integral values.)
*/
static const TValue *getgeneric (Table *t, const TValue *key) {
Node *n = mainpositionTV(t, key);
for (;;) { /* check whether 'key' is somewhere in the chain */
if (equalkey(key, n))
return gval(n); /* that's it */
else {
int nx = gnext(n);
if (nx == 0)
return &absentkey; /* not found */
n += nx;
}
}
}
/*
** returns the index for 'k' if 'k' is an appropriate key to live in
** the array part of a table, 0 otherwise.
*/
static unsigned int arrayindex (lua_Integer k) {
if (l_castS2U(k) - 1u < MAXASIZE) /* 'k' in [1, MAXASIZE]? */
return cast_uint(k); /* 'key' is an appropriate array index */
else
return 0;
}
/*
** returns the index of a 'key' for table traversals. First goes all
** elements in the array part, then elements in the hash part. The
** beginning of a traversal is signaled by 0.
*/
static unsigned int findindex (lua_State *L, Table *t, TValue *key,
unsigned int asize) {
unsigned int i;
if (ttisnil(key)) return 0; /* first iteration */
i = ttisinteger(key) ? arrayindex(ivalue(key)) : 0;
if (i - 1u < asize) /* is 'key' inside array part? */
return i; /* yes; that's the index */
else {
const TValue *n = getgeneric(t, key);
if (unlikely(isabstkey(n)))
luaG_runerror(L, "invalid key to 'next'"); /* key not found */
i = cast_int(nodefromval(n) - gnode(t, 0)); /* key index in hash table */
/* hash elements are numbered after array ones */
return (i + 1) + asize;
}
}
int luaH_next (lua_State *L, Table *t, StkId key) {
unsigned int asize = luaH_realasize(t);
unsigned int i = findindex(L, t, s2v(key), asize); /* find original key */
for (; i < asize; i++) { /* try first array part */
if (!isempty(&t->array[i])) { /* a non-empty entry? */
setivalue(s2v(key), i + 1);
setobj2s(L, key + 1, &t->array[i]);
return 1;
}
}
for (i -= asize; cast_int(i) < sizenode(t); i++) { /* hash part */
if (!isempty(gval(gnode(t, i)))) { /* a non-empty entry? */
Node *n = gnode(t, i);
getnodekey(L, s2v(key), n);
setobj2s(L, key + 1, gval(n));
return 1;
}
}
return 0; /* no more elements */
}
static void freehash (lua_State *L, Table *t) {
if (!isdummy(t))
luaM_freearray(L, t->node, cast_sizet(sizenode(t)));
}
/*
** {=============================================================
** Rehash
** ==============================================================
*/
/*
** Compute the optimal size for the array part of table 't'. 'nums' is a
** "count array" where 'nums[i]' is the number of integers in the table
** between 2^(i - 1) + 1 and 2^i. 'pna' enters with the total number of
** integer keys in the table and leaves with the number of keys that
** will go to the array part; return the optimal size. (The condition
** 'twotoi > 0' in the for loop stops the loop if 'twotoi' overflows.)
*/
static unsigned int computesizes (unsigned int nums[], unsigned int *pna) {
int i;
unsigned int twotoi; /* 2^i (candidate for optimal size) */
unsigned int a = 0; /* number of elements smaller than 2^i */
unsigned int na = 0; /* number of elements to go to array part */
unsigned int optimal = 0; /* optimal size for array part */
/* loop while keys can fill more than half of total size */
for (i = 0, twotoi = 1;
twotoi > 0 && *pna > twotoi / 2;
i++, twotoi *= 2) {
a += nums[i];
if (a > twotoi/2) { /* more than half elements present? */
optimal = twotoi; /* optimal size (till now) */
na = a; /* all elements up to 'optimal' will go to array part */
}
}
lua_assert((optimal == 0 || optimal / 2 < na) && na <= optimal);
*pna = na;
return optimal;
}
static int countint (lua_Integer key, unsigned int *nums) {
unsigned int k = arrayindex(key);
if (k != 0) { /* is 'key' an appropriate array index? */
nums[luaO_ceillog2(k)]++; /* count as such */
return 1;
}
else
return 0;
}
/*
** Count keys in array part of table 't': Fill 'nums[i]' with
** number of keys that will go into corresponding slice and return
** total number of non-nil keys.
*/
static unsigned int numusearray (const Table *t, unsigned int *nums) {
int lg;
unsigned int ttlg; /* 2^lg */
unsigned int ause = 0; /* summation of 'nums' */
unsigned int i = 1; /* count to traverse all array keys */
unsigned int asize = limitasasize(t); /* real array size */
/* traverse each slice */
for (lg = 0, ttlg = 1; lg <= MAXABITS; lg++, ttlg *= 2) {
unsigned int lc = 0; /* counter */
unsigned int lim = ttlg;
if (lim > asize) {
lim = asize; /* adjust upper limit */
if (i > lim)
break; /* no more elements to count */
}
/* count elements in range (2^(lg - 1), 2^lg] */
for (; i <= lim; i++) {
if (!isempty(&t->array[i-1]))
lc++;
}
nums[lg] += lc;
ause += lc;
}
return ause;
}
static int numusehash (const Table *t, unsigned int *nums, unsigned int *pna) {
int totaluse = 0; /* total number of elements */
int ause = 0; /* elements added to 'nums' (can go to array part) */
int i = sizenode(t);
while (i--) {
Node *n = &t->node[i];
if (!isempty(gval(n))) {
if (keyisinteger(n))
ause += countint(keyival(n), nums);
totaluse++;
}
}
*pna += ause;
return totaluse;
}
/*
** Creates an array for the hash part of a table with the given
** size, or reuses the dummy node if size is zero.
** The computation for size overflow is in two steps: the first
** comparison ensures that the shift in the second one does not
** overflow.
*/
static void setnodevector (lua_State *L, Table *t, unsigned int size) {
if (size == 0) { /* no elements to hash part? */
t->node = cast(Node *, dummynode); /* use common 'dummynode' */
t->lsizenode = 0;
t->lastfree = NULL; /* signal that it is using dummy node */
}
else {
int i;
int lsize = luaO_ceillog2(size);
if (lsize > MAXHBITS || (1u << lsize) > MAXHSIZE)
luaG_runerror(L, "table overflow");
size = twoto(lsize);
t->node = luaM_newvector(L, size, Node);
for (i = 0; i < (int)size; i++) {
Node *n = gnode(t, i);
gnext(n) = 0;
setnilkey(n);
setempty(gval(n));
}
t->lsizenode = cast_byte(lsize);
t->lastfree = gnode(t, size); /* all positions are free */
}
}
/*
** (Re)insert all elements from the hash part of 'ot' into table 't'.
*/
static void reinsert (lua_State *L, Table *ot, Table *t) {
int j;
int size = sizenode(ot);
for (j = 0; j < size; j++) {
Node *old = gnode(ot, j);
if (!isempty(gval(old))) {
/* doesn't need barrier/invalidate cache, as entry was
already present in the table */
TValue k;
getnodekey(L, &k, old);
setobjt2t(L, luaH_set(L, t, &k), gval(old));
}
}
}
/*
** Exchange the hash part of 't1' and 't2'.
*/
static void exchangehashpart (Table *t1, Table *t2) {
lu_byte lsizenode = t1->lsizenode;
Node *node = t1->node;
Node *lastfree = t1->lastfree;
t1->lsizenode = t2->lsizenode;
t1->node = t2->node;
t1->lastfree = t2->lastfree;
t2->lsizenode = lsizenode;
t2->node = node;
t2->lastfree = lastfree;
}
/*
** Resize table 't' for the new given sizes. Both allocations (for
** the hash part and for the array part) can fail, which creates some
** subtleties. If the first allocation, for the hash part, fails, an
** error is raised and that is it. Otherwise, it copies the elements from
** the shrinking part of the array (if it is shrinking) into the new
** hash. Then it reallocates the array part. If that fails, the table
** is in its original state; the function frees the new hash part and then
** raises the allocation error. Otherwise, it sets the new hash part
** into the table, initializes the new part of the array (if any) with
** nils and reinserts the elements of the old hash back into the new
** parts of the table.
*/
void luaH_resize (lua_State *L, Table *t, unsigned int newasize,
unsigned int nhsize) {
unsigned int i;
Table newt; /* to keep the new hash part */
unsigned int oldasize = setlimittosize(t);
TValue *newarray;
/* create new hash part with appropriate size into 'newt' */
setnodevector(L, &newt, nhsize);
if (newasize < oldasize) { /* will array shrink? */
t->alimit = newasize; /* pretend array has new size... */
exchangehashpart(t, &newt); /* and new hash */
/* re-insert into the new hash the elements from vanishing slice */
for (i = newasize; i < oldasize; i++) {
if (!isempty(&t->array[i]))
luaH_setint(L, t, i + 1, &t->array[i]);
}
t->alimit = oldasize; /* restore current size... */
exchangehashpart(t, &newt); /* and hash (in case of errors) */
}
/* allocate new array */
newarray = luaM_reallocvector(L, t->array, oldasize, newasize, TValue);
if (unlikely(newarray == NULL && newasize > 0)) { /* allocation failed? */
freehash(L, &newt); /* release new hash part */
luaM_error(L); /* raise error (with array unchanged) */
}
/* allocation ok; initialize new part of the array */
exchangehashpart(t, &newt); /* 't' has the new hash ('newt' has the old) */
t->array = newarray; /* set new array part */
t->alimit = newasize;
for (i = oldasize; i < newasize; i++) /* clear new slice of the array */
setempty(&t->array[i]);
/* re-insert elements from old hash part into new parts */
reinsert(L, &newt, t); /* 'newt' now has the old hash */
freehash(L, &newt); /* free old hash part */
}
void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize) {
int nsize = allocsizenode(t);
luaH_resize(L, t, nasize, nsize);
}
/*
** nums[i] = number of keys 'k' where 2^(i - 1) < k <= 2^i
*/
static void rehash (lua_State *L, Table *t, const TValue *ek) {
unsigned int asize; /* optimal size for array part */
unsigned int na; /* number of keys in the array part */
unsigned int nums[MAXABITS + 1];
int i;
int totaluse;
for (i = 0; i <= MAXABITS; i++) nums[i] = 0; /* reset counts */
setlimittosize(t);
na = numusearray(t, nums); /* count keys in array part */
totaluse = na; /* all those keys are integer keys */
totaluse += numusehash(t, nums, &na); /* count keys in hash part */
/* count extra key */
if (ttisinteger(ek))
na += countint(ivalue(ek), nums);
totaluse++;
/* compute new size for array part */
asize = computesizes(nums, &na);
/* resize the table to new computed sizes */
luaH_resize(L, t, asize, totaluse - na);
}
/*
** }=============================================================
*/
Table *luaH_new (lua_State *L) {
GCObject *o = luaC_newobj(L, LUA_VTABLE, sizeof(Table));
Table *t = gco2t(o);
t->metatable = NULL;
t->flags = cast_byte(~0);
t->array = NULL;
t->alimit = 0;
setnodevector(L, t, 0);
return t;
}
void luaH_free (lua_State *L, Table *t) {
freehash(L, t);
luaM_freearray(L, t->array, luaH_realasize(t));
luaM_free(L, t);
}
static Node *getfreepos (Table *t) {
if (!isdummy(t)) {
while (t->lastfree > t->node) {
t->lastfree--;
if (keyisnil(t->lastfree))
return t->lastfree;
}
}
return NULL; /* could not find a free place */
}
/*
** inserts a new key into a hash table; first, check whether key's main
** position is free. If not, check whether colliding node is in its main
** position or not: if it is not, move colliding node to an empty place and
** put new key in its main position; otherwise (colliding node is in its main
** position), new key goes to an empty position.
*/
TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
Node *mp;
TValue aux;
if (unlikely(ttisnil(key)))
luaG_runerror(L, "table index is nil");
else if (ttisfloat(key)) {
lua_Number f = fltvalue(key);
lua_Integer k;
if (luaV_flttointeger(f, &k, F2Ieq)) { /* does key fit in an integer? */
setivalue(&aux, k);
key = &aux; /* insert it as an integer */
}
else if (unlikely(luai_numisnan(f)))
luaG_runerror(L, "table index is NaN");
}
mp = mainpositionTV(t, key);
if (!isempty(gval(mp)) || isdummy(t)) { /* main position is taken? */
Node *othern;
Node *f = getfreepos(t); /* get a free place */
if (f == NULL) { /* cannot find a free place? */
rehash(L, t, key); /* grow table */
/* whatever called 'newkey' takes care of TM cache */
return luaH_set(L, t, key); /* insert key into grown table */
}
lua_assert(!isdummy(t));
othern = mainposition(t, keytt(mp), &keyval(mp));
if (othern != mp) { /* is colliding node out of its main position? */
/* yes; move colliding node into free position */
while (othern + gnext(othern) != mp) /* find previous */
othern += gnext(othern);
gnext(othern) = cast_int(f - othern); /* rechain to point to 'f' */
*f = *mp; /* copy colliding node into free pos. (mp->next also goes) */
if (gnext(mp) != 0) {
gnext(f) += cast_int(mp - f); /* correct 'next' */
gnext(mp) = 0; /* now 'mp' is free */
}
setempty(gval(mp));
}
else { /* colliding node is in its own main position */
/* new node will go into free position */
if (gnext(mp) != 0)
gnext(f) = cast_int((mp + gnext(mp)) - f); /* chain new position */
else lua_assert(gnext(f) == 0);
gnext(mp) = cast_int(f - mp);
mp = f;
}
}
setnodekey(L, mp, key);
luaC_barrierback(L, obj2gco(t), key);
lua_assert(isempty(gval(mp)));
return gval(mp);
}
/*
** Search function for integers. If integer is inside 'alimit', get it
** directly from the array part. Otherwise, if 'alimit' is not equal to
** the real size of the array, key still can be in the array part. In
** this case, try to avoid a call to 'luaH_realasize' when key is just
** one more than the limit (so that it can be incremented without
** changing the real size of the array).
*/
const TValue *luaH_getint (Table *t, lua_Integer key) {
if (l_castS2U(key) - 1u < t->alimit) /* 'key' in [1, t->alimit]? */
return &t->array[key - 1];
else if (!limitequalsasize(t) && /* key still may be in the array part? */
(l_castS2U(key) == t->alimit + 1 ||
l_castS2U(key) - 1u < luaH_realasize(t))) {
t->alimit = cast_uint(key); /* probably '#t' is here now */
return &t->array[key - 1];
}
else {
Node *n = hashint(t, key);
for (;;) { /* check whether 'key' is somewhere in the chain */
if (keyisinteger(n) && keyival(n) == key)
return gval(n); /* that's it */
else {
int nx = gnext(n);
if (nx == 0) break;
n += nx;
}
}
return &absentkey;
}
}
/*
** search function for short strings
*/
const TValue *luaH_getshortstr (Table *t, TString *key) {
Node *n = hashstr(t, key);
lua_assert(key->tt == LUA_VSHRSTR);
for (;;) { /* check whether 'key' is somewhere in the chain */
if (keyisshrstr(n) && eqshrstr(keystrval(n), key))
return gval(n); /* that's it */
else {
int nx = gnext(n);
if (nx == 0)
return &absentkey; /* not found */
n += nx;
}
}
}
const TValue *luaH_getstr (Table *t, TString *key) {
if (key->tt == LUA_VSHRSTR)
return luaH_getshortstr(t, key);
else { /* for long strings, use generic case */
TValue ko;
setsvalue(cast(lua_State *, NULL), &ko, key);
return getgeneric(t, &ko);
}
}
/*
** main search function
*/
const TValue *luaH_get (Table *t, const TValue *key) {
switch (ttypetag(key)) {
case LUA_VSHRSTR: return luaH_getshortstr(t, tsvalue(key));
case LUA_VNUMINT: return luaH_getint(t, ivalue(key));
case LUA_VNIL: return &absentkey;
case LUA_VNUMFLT: {
lua_Integer k;
if (luaV_flttointeger(fltvalue(key), &k, F2Ieq)) /* integral index? */
return luaH_getint(t, k); /* use specialized version */
/* else... */
} /* FALLTHROUGH */
default:
return getgeneric(t, key);
}
}
/*
** beware: when using this function you probably need to check a GC
** barrier and invalidate the TM cache.
*/
TValue *luaH_set (lua_State *L, Table *t, const TValue *key) {
const TValue *p = luaH_get(t, key);
if (!isabstkey(p))
return cast(TValue *, p);
else return luaH_newkey(L, t, key);
}
void luaH_setint (lua_State *L, Table *t, lua_Integer key, TValue *value) {
const TValue *p = luaH_getint(t, key);
TValue *cell;
if (!isabstkey(p))
cell = cast(TValue *, p);
else {
TValue k;
setivalue(&k, key);
cell = luaH_newkey(L, t, &k);
}
setobj2t(L, cell, value);
}
/*
** Try to find a boundary in the hash part of table 't'. From the
** caller, we know that 'j' is zero or present and that 'j + 1' is
** present. We want to find a larger key that is absent from the
** table, so that we can do a binary search between the two keys to
** find a boundary. We keep doubling 'j' until we get an absent index.
** If the doubling would overflow, we try LUA_MAXINTEGER. If it is
** absent, we are ready for the binary search. ('j', being max integer,
** is larger or equal to 'i', but it cannot be equal because it is
** absent while 'i' is present; so 'j > i'.) Otherwise, 'j' is a
** boundary. ('j + 1' cannot be a present integer key because it is
** not a valid integer in Lua.)
*/
static lua_Unsigned hash_search (Table *t, lua_Unsigned j) {
lua_Unsigned i;
if (j == 0) j++; /* the caller ensures 'j + 1' is present */
do {
i = j; /* 'i' is a present index */
if (j <= l_castS2U(LUA_MAXINTEGER) / 2)
j *= 2;
else {
j = LUA_MAXINTEGER;
if (isempty(luaH_getint(t, j))) /* t[j] not present? */
break; /* 'j' now is an absent index */
else /* weird case */
return j; /* well, max integer is a boundary... */
}
} while (!isempty(luaH_getint(t, j))); /* repeat until an absent t[j] */
/* i < j && t[i] present && t[j] absent */
while (j - i > 1u) { /* do a binary search between them */
lua_Unsigned m = (i + j) / 2;
if (isempty(luaH_getint(t, m))) j = m;
else i = m;
}
return i;
}
static unsigned int binsearch (const TValue *array, unsigned int i,
unsigned int j) {
while (j - i > 1u) { /* binary search */
unsigned int m = (i + j) / 2;
if (isempty(&array[m - 1])) j = m;
else i = m;
}
return i;
}
/*
** Try to find a boundary in table 't'. (A 'boundary' is an integer index
** such that t[i] is present and t[i+1] is absent, or 0 if t[1] is absent
** and 'maxinteger' if t[maxinteger] is present.)
** (In the next explanation, we use Lua indices, that is, with base 1.
** The code itself uses base 0 when indexing the array part of the table.)
** The code starts with 'limit = t->alimit', a position in the array
** part that may be a boundary.
**
** (1) If 't[limit]' is empty, there must be a boundary before it.
** As a common case (e.g., after 't[#t]=nil'), check whether 'limit-1'
** is present. If so, it is a boundary. Otherwise, do a binary search
** between 0 and limit to find a boundary. In both cases, try to
** use this boundary as the new 'alimit', as a hint for the next call.
**
** (2) If 't[limit]' is not empty and the array has more elements
** after 'limit', try to find a boundary there. Again, try first
** the special case (which should be quite frequent) where 'limit+1'
** is empty, so that 'limit' is a boundary. Otherwise, check the
** last element of the array part. If it is empty, there must be a
** boundary between the old limit (present) and the last element
** (absent), which is found with a binary search. (This boundary always
** can be a new limit.)
**
** (3) The last case is when there are no elements in the array part
** (limit == 0) or its last element (the new limit) is present.
** In this case, must check the hash part. If there is no hash part
** or 'limit+1' is absent, 'limit' is a boundary. Otherwise, call
** 'hash_search' to find a boundary in the hash part of the table.
** (In those cases, the boundary is not inside the array part, and
** therefore cannot be used as a new limit.)
*/
lua_Unsigned luaH_getn (Table *t) {
unsigned int limit = t->alimit;
if (limit > 0 && isempty(&t->array[limit - 1])) { /* (1)? */
/* there must be a boundary before 'limit' */
if (limit >= 2 && !isempty(&t->array[limit - 2])) {
/* 'limit - 1' is a boundary; can it be a new limit? */
if (ispow2realasize(t) && !ispow2(limit - 1)) {
t->alimit = limit - 1;
setnorealasize(t); /* now 'alimit' is not the real size */
}
return limit - 1;
}
else { /* must search for a boundary in [0, limit] */
unsigned int boundary = binsearch(t->array, 0, limit);
/* can this boundary represent the real size of the array? */
if (ispow2realasize(t) && boundary > luaH_realasize(t) / 2) {
t->alimit = boundary; /* use it as the new limit */
setnorealasize(t);
}
return boundary;
}
}
/* 'limit' is zero or present in table */
if (!limitequalsasize(t)) { /* (2)? */
/* 'limit' > 0 and array has more elements after 'limit' */
if (isempty(&t->array[limit])) /* 'limit + 1' is empty? */
return limit; /* this is the boundary */
/* else, try last element in the array */
limit = luaH_realasize(t);
if (isempty(&t->array[limit - 1])) { /* empty? */
/* there must be a boundary in the array after old limit,
and it must be a valid new limit */
unsigned int boundary = binsearch(t->array, t->alimit, limit);
t->alimit = boundary;
return boundary;
}
/* else, new limit is present in the table; check the hash part */
}
/* (3) 'limit' is the last element and either is zero or present in table */
lua_assert(limit == luaH_realasize(t) &&
(limit == 0 || !isempty(&t->array[limit - 1])));
if (isdummy(t) || isempty(luaH_getint(t, cast(lua_Integer, limit + 1))))
return limit; /* 'limit + 1' is absent */
else /* 'limit + 1' is also present */
return hash_search(t, limit);
}
#if defined(LUA_DEBUG)
/* export these functions for the test library */
Node *luaH_mainposition (const Table *t, const TValue *key) {
return mainpositionTV(t, key);
}
int luaH_isdummy (const Table *t) { return isdummy(t); }
#endif

31
lua-5.3.3/src/ltable.h → lua-5.4.0/src/ltable.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ltable.h,v 2.21 2015/11/03 15:47:30 roberto Exp $ ** $Id: ltable.h $
** Lua tables (hash) ** Lua tables (hash)
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -12,24 +12,22 @@
#define gnode(t,i) (&(t)->node[i]) #define gnode(t,i) (&(t)->node[i])
#define gval(n) (&(n)->i_val) #define gval(n) (&(n)->i_val)
#define gnext(n) ((n)->i_key.nk.next) #define gnext(n) ((n)->u.next)
/* 'const' to avoid wrong writings that can mess up field 'next' */
#define gkey(n) cast(const TValue*, (&(n)->i_key.tvk))
/*
** writable version of 'gkey'; allows updates to individual fields,
** but not to the whole (which has incompatible type)
*/
#define wgkey(n) (&(n)->i_key.nk)
#define invalidateTMcache(t) ((t)->flags = 0) #define invalidateTMcache(t) ((t)->flags = 0)
/* returns the key, given the value of a table entry */ /* true when 't' is using 'dummynode' as its hash part */
#define keyfromval(v) \ #define isdummy(t) ((t)->lastfree == NULL)
(gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
/* allocated size for hash nodes */
#define allocsizenode(t) (isdummy(t) ? 0 : sizenode(t))
/* returns the Node, given the value of a table entry */
#define nodefromval(v) cast(Node *, (v))
LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key); LUAI_FUNC const TValue *luaH_getint (Table *t, lua_Integer key);
@ -46,12 +44,13 @@ LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize); LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize);
LUAI_FUNC void luaH_free (lua_State *L, Table *t); LUAI_FUNC void luaH_free (lua_State *L, Table *t);
LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key); LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
LUAI_FUNC int luaH_getn (Table *t); LUAI_FUNC lua_Unsigned luaH_getn (Table *t);
LUAI_FUNC unsigned int luaH_realasize (const Table *t);
#if defined(LUA_DEBUG) #if defined(LUA_DEBUG)
LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key); LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
LUAI_FUNC int luaH_isdummy (Node *n); LUAI_FUNC int luaH_isdummy (const Table *t);
#endif #endif

52
lua-5.3.3/src/ltablib.c → lua-5.4.0/src/ltablib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ltablib.c,v 1.93 2016/02/25 19:41:54 roberto Exp $ ** $Id: ltablib.c $
** Library for Table Manipulation ** Library for Table Manipulation
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -58,24 +58,6 @@ static void checktab (lua_State *L, int arg, int what) {
} }
#if defined(LUA_COMPAT_MAXN)
static int maxn (lua_State *L) {
lua_Number max = 0;
luaL_checktype(L, 1, LUA_TTABLE);
lua_pushnil(L); /* first key */
while (lua_next(L, 1)) {
lua_pop(L, 1); /* remove value */
if (lua_type(L, -1) == LUA_TNUMBER) {
lua_Number v = lua_tonumber(L, -1);
if (v > max) max = v;
}
}
lua_pushnumber(L, max);
return 1;
}
#endif
static int tinsert (lua_State *L) { static int tinsert (lua_State *L) {
lua_Integer e = aux_getn(L, 1, TAB_RW) + 1; /* first empty element */ lua_Integer e = aux_getn(L, 1, TAB_RW) + 1; /* first empty element */
lua_Integer pos; /* where to insert new element */ lua_Integer pos; /* where to insert new element */
@ -87,7 +69,9 @@ static int tinsert (lua_State *L) {
case 3: { case 3: {
lua_Integer i; lua_Integer i;
pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */ pos = luaL_checkinteger(L, 2); /* 2nd argument is the position */
luaL_argcheck(L, 1 <= pos && pos <= e, 2, "position out of bounds"); /* check whether 'pos' is in [1, e] */
luaL_argcheck(L, (lua_Unsigned)pos - 1u < (lua_Unsigned)e, 2,
"position out of bounds");
for (i = e; i > pos; i--) { /* move up elements */ for (i = e; i > pos; i--) { /* move up elements */
lua_geti(L, 1, i - 1); lua_geti(L, 1, i - 1);
lua_seti(L, 1, i); /* t[i] = t[i - 1] */ lua_seti(L, 1, i); /* t[i] = t[i - 1] */
@ -107,14 +91,16 @@ static int tremove (lua_State *L) {
lua_Integer size = aux_getn(L, 1, TAB_RW); lua_Integer size = aux_getn(L, 1, TAB_RW);
lua_Integer pos = luaL_optinteger(L, 2, size); lua_Integer pos = luaL_optinteger(L, 2, size);
if (pos != size) /* validate 'pos' if given */ if (pos != size) /* validate 'pos' if given */
luaL_argcheck(L, 1 <= pos && pos <= size + 1, 1, "position out of bounds"); /* check whether 'pos' is in [1, size + 1] */
luaL_argcheck(L, (lua_Unsigned)pos - 1u <= (lua_Unsigned)size, 1,
"position out of bounds");
lua_geti(L, 1, pos); /* result = t[pos] */ lua_geti(L, 1, pos); /* result = t[pos] */
for ( ; pos < size; pos++) { for ( ; pos < size; pos++) {
lua_geti(L, 1, pos + 1); lua_geti(L, 1, pos + 1);
lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */ lua_seti(L, 1, pos); /* t[pos] = t[pos + 1] */
} }
lua_pushnil(L); lua_pushnil(L);
lua_seti(L, 1, pos); /* t[pos] = nil */ lua_seti(L, 1, pos); /* remove entry t[pos] */
return 1; return 1;
} }
@ -191,7 +177,7 @@ static int tconcat (lua_State *L) {
** ======================================================= ** =======================================================
*/ */
static int pack (lua_State *L) { static int tpack (lua_State *L) {
int i; int i;
int n = lua_gettop(L); /* number of elements to pack */ int n = lua_gettop(L); /* number of elements to pack */
lua_createtable(L, n, 1); /* create result table */ lua_createtable(L, n, 1); /* create result table */
@ -204,7 +190,7 @@ static int pack (lua_State *L) {
} }
static int unpack (lua_State *L) { static int tunpack (lua_State *L) {
lua_Unsigned n; lua_Unsigned n;
lua_Integer i = luaL_optinteger(L, 2, 1); lua_Integer i = luaL_optinteger(L, 2, 1);
lua_Integer e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1)); lua_Integer e = luaL_opt(L, luaL_checkinteger, 3, luaL_len(L, 1));
@ -313,14 +299,14 @@ static IdxT partition (lua_State *L, IdxT lo, IdxT up) {
/* loop invariant: a[lo .. i] <= P <= a[j .. up] */ /* loop invariant: a[lo .. i] <= P <= a[j .. up] */
for (;;) { for (;;) {
/* next loop: repeat ++i while a[i] < P */ /* next loop: repeat ++i while a[i] < P */
while (lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) { while ((void)lua_geti(L, 1, ++i), sort_comp(L, -1, -2)) {
if (i == up - 1) /* a[i] < P but a[up - 1] == P ?? */ if (i == up - 1) /* a[i] < P but a[up - 1] == P ?? */
luaL_error(L, "invalid order function for sorting"); luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[i] */ lua_pop(L, 1); /* remove a[i] */
} }
/* after the loop, a[i] >= P and a[lo .. i - 1] < P */ /* after the loop, a[i] >= P and a[lo .. i - 1] < P */
/* next loop: repeat --j while P < a[j] */ /* next loop: repeat --j while P < a[j] */
while (lua_geti(L, 1, --j), sort_comp(L, -3, -1)) { while ((void)lua_geti(L, 1, --j), sort_comp(L, -3, -1)) {
if (j < i) /* j < i but a[j] > P ?? */ if (j < i) /* j < i but a[j] > P ?? */
luaL_error(L, "invalid order function for sorting"); luaL_error(L, "invalid order function for sorting");
lua_pop(L, 1); /* remove a[j] */ lua_pop(L, 1); /* remove a[j] */
@ -352,7 +338,7 @@ static IdxT choosePivot (IdxT lo, IdxT up, unsigned int rnd) {
/* /*
** QuickSort algorithm (recursive function) ** Quicksort algorithm (recursive function)
*/ */
static void auxsort (lua_State *L, IdxT lo, IdxT up, static void auxsort (lua_State *L, IdxT lo, IdxT up,
unsigned int rnd) { unsigned int rnd) {
@ -425,12 +411,9 @@ static int sort (lua_State *L) {
static const luaL_Reg tab_funcs[] = { static const luaL_Reg tab_funcs[] = {
{"concat", tconcat}, {"concat", tconcat},
#if defined(LUA_COMPAT_MAXN)
{"maxn", maxn},
#endif
{"insert", tinsert}, {"insert", tinsert},
{"pack", pack}, {"pack", tpack},
{"unpack", unpack}, {"unpack", tunpack},
{"remove", tremove}, {"remove", tremove},
{"move", tmove}, {"move", tmove},
{"sort", sort}, {"sort", sort},
@ -440,11 +423,6 @@ static const luaL_Reg tab_funcs[] = {
LUAMOD_API int luaopen_table (lua_State *L) { LUAMOD_API int luaopen_table (lua_State *L) {
luaL_newlib(L, tab_funcs); luaL_newlib(L, tab_funcs);
#if defined(LUA_COMPAT_UNPACK)
/* _G.unpack = table.unpack */
lua_getfield(L, -1, "unpack");
lua_setglobal(L, "unpack");
#endif
return 1; return 1;
} }

270
lua-5.4.0/src/ltm.c Normal file
View File

@ -0,0 +1,270 @@
/*
** $Id: ltm.c $
** Tag methods
** See Copyright Notice in lua.h
*/
#define ltm_c
#define LUA_CORE
#include "lprefix.h"
#include <string.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lgc.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lvm.h"
static const char udatatypename[] = "userdata";
LUAI_DDEF const char *const luaT_typenames_[LUA_TOTALTYPES] = {
"no value",
"nil", "boolean", udatatypename, "number",
"string", "table", "function", udatatypename, "thread",
"upvalue", "proto" /* these last cases are used for tests only */
};
void luaT_init (lua_State *L) {
static const char *const luaT_eventname[] = { /* ORDER TM */
"__index", "__newindex",
"__gc", "__mode", "__len", "__eq",
"__add", "__sub", "__mul", "__mod", "__pow",
"__div", "__idiv",
"__band", "__bor", "__bxor", "__shl", "__shr",
"__unm", "__bnot", "__lt", "__le",
"__concat", "__call", "__close"
};
int i;
for (i=0; i<TM_N; i++) {
G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
luaC_fix(L, obj2gco(G(L)->tmname[i])); /* never collect these names */
}
}
/*
** function to be used with macro "fasttm": optimized for absence of
** tag methods
*/
const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
const TValue *tm = luaH_getshortstr(events, ename);
lua_assert(event <= TM_EQ);
if (notm(tm)) { /* no tag method? */
events->flags |= cast_byte(1u<<event); /* cache this fact */
return NULL;
}
else return tm;
}
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
Table *mt;
switch (ttype(o)) {
case LUA_TTABLE:
mt = hvalue(o)->metatable;
break;
case LUA_TUSERDATA:
mt = uvalue(o)->metatable;
break;
default:
mt = G(L)->mt[ttype(o)];
}
return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : &G(L)->nilvalue);
}
/*
** Return the name of the type of an object. For tables and userdata
** with metatable, use their '__name' metafield, if present.
*/
const char *luaT_objtypename (lua_State *L, const TValue *o) {
Table *mt;
if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
(ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
if (ttisstring(name)) /* is '__name' a string? */
return getstr(tsvalue(name)); /* use it as type name */
}
return ttypename(ttype(o)); /* else use standard type name */
}
void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, const TValue *p3) {
StkId func = L->top;
setobj2s(L, func, f); /* push function (assume EXTRA_STACK) */
setobj2s(L, func + 1, p1); /* 1st argument */
setobj2s(L, func + 2, p2); /* 2nd argument */
setobj2s(L, func + 3, p3); /* 3rd argument */
L->top = func + 4;
/* metamethod may yield only when called from Lua code */
if (isLuacode(L->ci))
luaD_call(L, func, 0);
else
luaD_callnoyield(L, func, 0);
}
void luaT_callTMres (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, StkId res) {
ptrdiff_t result = savestack(L, res);
StkId func = L->top;
setobj2s(L, func, f); /* push function (assume EXTRA_STACK) */
setobj2s(L, func + 1, p1); /* 1st argument */
setobj2s(L, func + 2, p2); /* 2nd argument */
L->top += 3;
/* metamethod may yield only when called from Lua code */
if (isLuacode(L->ci))
luaD_call(L, func, 1);
else
luaD_callnoyield(L, func, 1);
res = restorestack(L, result);
setobjs2s(L, res, --L->top); /* move result to its place */
}
static int callbinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
const TValue *tm = luaT_gettmbyobj(L, p1, event); /* try first operand */
if (notm(tm))
tm = luaT_gettmbyobj(L, p2, event); /* try second operand */
if (notm(tm)) return 0;
luaT_callTMres(L, tm, p1, p2, res);
return 1;
}
void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event) {
if (!callbinTM(L, p1, p2, res, event)) {
switch (event) {
case TM_BAND: case TM_BOR: case TM_BXOR:
case TM_SHL: case TM_SHR: case TM_BNOT: {
if (ttisnumber(p1) && ttisnumber(p2))
luaG_tointerror(L, p1, p2);
else
luaG_opinterror(L, p1, p2, "perform bitwise operation on");
}
/* calls never return, but to avoid warnings: *//* FALLTHROUGH */
default:
luaG_opinterror(L, p1, p2, "perform arithmetic on");
}
}
}
void luaT_tryconcatTM (lua_State *L) {
StkId top = L->top;
if (!callbinTM(L, s2v(top - 2), s2v(top - 1), top - 2, TM_CONCAT))
luaG_concaterror(L, s2v(top - 2), s2v(top - 1));
}
void luaT_trybinassocTM (lua_State *L, const TValue *p1, const TValue *p2,
int flip, StkId res, TMS event) {
if (flip)
luaT_trybinTM(L, p2, p1, res, event);
else
luaT_trybinTM(L, p1, p2, res, event);
}
void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,
int flip, StkId res, TMS event) {
TValue aux;
setivalue(&aux, i2);
luaT_trybinassocTM(L, p1, &aux, flip, res, event);
}
/*
** Calls an order tag method.
** For lessequal, LUA_COMPAT_LT_LE keeps compatibility with old
** behavior: if there is no '__le', try '__lt', based on l <= r iff
** !(r < l) (assuming a total order). If the metamethod yields during
** this substitution, the continuation has to know about it (to negate
** the result of r<l); bit CIST_LEQ in the call status keeps that
** information.
*/
int luaT_callorderTM (lua_State *L, const TValue *p1, const TValue *p2,
TMS event) {
if (callbinTM(L, p1, p2, L->top, event)) /* try original event */
return !l_isfalse(s2v(L->top));
#if defined(LUA_COMPAT_LT_LE)
else if (event == TM_LE) {
/* try '!(p2 < p1)' for '(p1 <= p2)' */
L->ci->callstatus |= CIST_LEQ; /* mark it is doing 'lt' for 'le' */
if (callbinTM(L, p2, p1, L->top, TM_LT)) {
L->ci->callstatus ^= CIST_LEQ; /* clear mark */
return l_isfalse(s2v(L->top));
}
/* else error will remove this 'ci'; no need to clear mark */
}
#endif
luaG_ordererror(L, p1, p2); /* no metamethod found */
return 0; /* to avoid warnings */
}
int luaT_callorderiTM (lua_State *L, const TValue *p1, int v2,
int flip, int isfloat, TMS event) {
TValue aux; const TValue *p2;
if (isfloat) {
setfltvalue(&aux, cast_num(v2));
}
else
setivalue(&aux, v2);
if (flip) { /* arguments were exchanged? */
p2 = p1; p1 = &aux; /* correct them */
}
else
p2 = &aux;
return luaT_callorderTM(L, p1, p2, event);
}
void luaT_adjustvarargs (lua_State *L, int nfixparams, CallInfo *ci,
const Proto *p) {
int i;
int actual = cast_int(L->top - ci->func) - 1; /* number of arguments */
int nextra = actual - nfixparams; /* number of extra arguments */
ci->u.l.nextraargs = nextra;
checkstackGC(L, p->maxstacksize + 1);
/* copy function to the top of the stack */
setobjs2s(L, L->top++, ci->func);
/* move fixed parameters to the top of the stack */
for (i = 1; i <= nfixparams; i++) {
setobjs2s(L, L->top++, ci->func + i);
setnilvalue(s2v(ci->func + i)); /* erase original parameter (for GC) */
}
ci->func += actual + 1;
ci->top += actual + 1;
lua_assert(L->top <= ci->top && ci->top <= L->stack_last);
}
void luaT_getvarargs (lua_State *L, CallInfo *ci, StkId where, int wanted) {
int i;
int nextra = ci->u.l.nextraargs;
if (wanted < 0) {
wanted = nextra; /* get all extra arguments available */
checkstackp(L, nextra, where); /* ensure stack space */
L->top = where + nextra; /* next instruction will need top */
}
for (i = 0; i < wanted && i < nextra; i++)
setobjs2s(L, where + i, ci->func - nextra + i);
for (; i < wanted; i++) /* complete required results with nil */
setnilvalue(s2v(where + i));
}

28
lua-5.3.3/src/ltm.h → lua-5.4.0/src/ltm.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: ltm.h,v 2.22 2016/02/26 19:20:15 roberto Exp $ ** $Id: ltm.h $
** Tag methods ** Tag methods
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -40,10 +40,17 @@ typedef enum {
TM_LE, TM_LE,
TM_CONCAT, TM_CONCAT,
TM_CALL, TM_CALL,
TM_CLOSE,
TM_N /* number of elements in the enum */ TM_N /* number of elements in the enum */
} TMS; } TMS;
/*
** Test whether there is no tagmethod.
** (Because tagmethods use raw accesses, the result may be an "empty" nil.)
*/
#define notm(tm) ttisnil(tm)
#define gfasttm(g,et,e) ((et) == NULL ? NULL : \ #define gfasttm(g,et,e) ((et) == NULL ? NULL : \
((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e])) ((et)->flags & (1u<<(e))) ? NULL : luaT_gettm(et, e, (g)->tmname[e]))
@ -52,7 +59,7 @@ typedef enum {
#define ttypename(x) luaT_typenames_[(x) + 1] #define ttypename(x) luaT_typenames_[(x) + 1]
LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS]; LUAI_DDEC(const char *const luaT_typenames_[LUA_TOTALTYPES];)
LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o); LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o);
@ -63,14 +70,25 @@ LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
LUAI_FUNC void luaT_init (lua_State *L); LUAI_FUNC void luaT_init (lua_State *L);
LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1, LUAI_FUNC void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
const TValue *p2, TValue *p3, int hasres); const TValue *p2, const TValue *p3);
LUAI_FUNC int luaT_callbinTM (lua_State *L, const TValue *p1, const TValue *p2, LUAI_FUNC void luaT_callTMres (lua_State *L, const TValue *f,
StkId res, TMS event); const TValue *p1, const TValue *p2, StkId p3);
LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2, LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
StkId res, TMS event); StkId res, TMS event);
LUAI_FUNC void luaT_tryconcatTM (lua_State *L);
LUAI_FUNC void luaT_trybinassocTM (lua_State *L, const TValue *p1,
const TValue *p2, int inv, StkId res, TMS event);
LUAI_FUNC void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,
int inv, StkId res, TMS event);
LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1, LUAI_FUNC int luaT_callorderTM (lua_State *L, const TValue *p1,
const TValue *p2, TMS event); const TValue *p2, TMS event);
LUAI_FUNC int luaT_callorderiTM (lua_State *L, const TValue *p1, int v2,
int inv, int isfloat, TMS event);
LUAI_FUNC void luaT_adjustvarargs (lua_State *L, int nfixparams,
struct CallInfo *ci, const Proto *p);
LUAI_FUNC void luaT_getvarargs (lua_State *L, struct CallInfo *ci,
StkId where, int wanted);
#endif #endif

424
lua-5.3.3/src/lua.c → lua-5.4.0/src/lua.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lua.c,v 1.226 2015/08/14 19:11:20 roberto Exp $ ** $Id: lua.c $
** Lua stand-alone interpreter ** Lua stand-alone interpreter
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -9,93 +9,27 @@
#include "lprefix.h" #include "lprefix.h"
#include <signal.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <signal.h>
#include "lua.h" #include "lua.h"
#include "lauxlib.h" #include "lauxlib.h"
#include "lualib.h" #include "lualib.h"
#if !defined(LUA_PROMPT)
#define LUA_PROMPT "> "
#define LUA_PROMPT2 ">> "
#endif
#if !defined(LUA_PROGNAME) #if !defined(LUA_PROGNAME)
#define LUA_PROGNAME "lua" #define LUA_PROGNAME "lua"
#endif #endif
#if !defined(LUA_MAXINPUT)
#define LUA_MAXINPUT 512
#endif
#if !defined(LUA_INIT_VAR) #if !defined(LUA_INIT_VAR)
#define LUA_INIT_VAR "LUA_INIT" #define LUA_INIT_VAR "LUA_INIT"
#endif #endif
#define LUA_INITVARVERSION \ #define LUA_INITVARVERSION LUA_INIT_VAR LUA_VERSUFFIX
LUA_INIT_VAR "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
/*
** lua_stdin_is_tty detects whether the standard input is a 'tty' (that
** is, whether we're running lua interactively).
*/
#if !defined(lua_stdin_is_tty) /* { */
#if defined(LUA_USE_POSIX) /* { */
#include <unistd.h>
#define lua_stdin_is_tty() isatty(0)
#elif defined(LUA_USE_WINDOWS) /* }{ */
#include <io.h>
#define lua_stdin_is_tty() _isatty(_fileno(stdin))
#else /* }{ */
/* ISO C definition */
#define lua_stdin_is_tty() 1 /* assume stdin is a tty */
#endif /* } */
#endif /* } */
/*
** lua_readline defines how to show a prompt and then read a line from
** the standard input.
** lua_saveline defines how to "save" a read line in a "history".
** lua_freeline defines how to free a line read by lua_readline.
*/
#if !defined(lua_readline) /* { */
#if defined(LUA_USE_READLINE) /* { */
#include <readline/readline.h>
#include <readline/history.h>
#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL)
#define lua_saveline(L,line) ((void)L, add_history(line))
#define lua_freeline(L,b) ((void)L, free(b))
#else /* }{ */
#define lua_readline(L,b,p) \
((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */
#define lua_saveline(L,line) { (void)L; (void)line; }
#define lua_freeline(L,b) { (void)L; (void)b; }
#endif /* } */
#endif /* } */
static lua_State *globalL = NULL; static lua_State *globalL = NULL;
@ -120,8 +54,9 @@ static void lstop (lua_State *L, lua_Debug *ar) {
** interpreter. ** interpreter.
*/ */
static void laction (int i) { static void laction (int i) {
int flag = LUA_MASKCALL | LUA_MASKRET | LUA_MASKLINE | LUA_MASKCOUNT;
signal(i, SIG_DFL); /* if another SIGINT happens, terminate process */ signal(i, SIG_DFL); /* if another SIGINT happens, terminate process */
lua_sethook(globalL, lstop, LUA_MASKCALL | LUA_MASKRET | LUA_MASKCOUNT, 1); lua_sethook(globalL, lstop, flag, 1);
} }
@ -136,9 +71,10 @@ static void print_usage (const char *badoption) {
"Available options are:\n" "Available options are:\n"
" -e stat execute string 'stat'\n" " -e stat execute string 'stat'\n"
" -i enter interactive mode after executing 'script'\n" " -i enter interactive mode after executing 'script'\n"
" -l name require library 'name'\n" " -l name require library 'name' into global 'name'\n"
" -v show version information\n" " -v show version information\n"
" -E ignore environment variables\n" " -E ignore environment variables\n"
" -W turn warnings on\n"
" -- stop handling options\n" " -- stop handling options\n"
" - stop handling options and execute stdin\n" " - stop handling options and execute stdin\n"
, ,
@ -265,6 +201,220 @@ static int dolibrary (lua_State *L, const char *name) {
} }
/*
** Push on the stack the contents of table 'arg' from 1 to #arg
*/
static int pushargs (lua_State *L) {
int i, n;
if (lua_getglobal(L, "arg") != LUA_TTABLE)
luaL_error(L, "'arg' is not a table");
n = (int)luaL_len(L, -1);
luaL_checkstack(L, n + 3, "too many arguments to script");
for (i = 1; i <= n; i++)
lua_rawgeti(L, -i, i);
lua_remove(L, -i); /* remove table from the stack */
return n;
}
static int handle_script (lua_State *L, char **argv) {
int status;
const char *fname = argv[0];
if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0)
fname = NULL; /* stdin */
status = luaL_loadfile(L, fname);
if (status == LUA_OK) {
int n = pushargs(L); /* push arguments to script */
status = docall(L, n, LUA_MULTRET);
}
return report(L, status);
}
/* bits of various argument indicators in 'args' */
#define has_error 1 /* bad option */
#define has_i 2 /* -i */
#define has_v 4 /* -v */
#define has_e 8 /* -e */
#define has_E 16 /* -E */
/*
** Traverses all arguments from 'argv', returning a mask with those
** needed before running any Lua code (or an error code if it finds
** any invalid argument). 'first' returns the first not-handled argument
** (either the script name or a bad argument in case of error).
*/
static int collectargs (char **argv, int *first) {
int args = 0;
int i;
for (i = 1; argv[i] != NULL; i++) {
*first = i;
if (argv[i][0] != '-') /* not an option? */
return args; /* stop handling options */
switch (argv[i][1]) { /* else check option */
case '-': /* '--' */
if (argv[i][2] != '\0') /* extra characters after '--'? */
return has_error; /* invalid option */
*first = i + 1;
return args;
case '\0': /* '-' */
return args; /* script "name" is '-' */
case 'E':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
args |= has_E;
break;
case 'W':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
break;
case 'i':
args |= has_i; /* (-i implies -v) *//* FALLTHROUGH */
case 'v':
if (argv[i][2] != '\0') /* extra characters? */
return has_error; /* invalid option */
args |= has_v;
break;
case 'e':
args |= has_e; /* FALLTHROUGH */
case 'l': /* both options need an argument */
if (argv[i][2] == '\0') { /* no concatenated argument? */
i++; /* try next 'argv' */
if (argv[i] == NULL || argv[i][0] == '-')
return has_error; /* no next argument or it is another option */
}
break;
default: /* invalid option */
return has_error;
}
}
*first = i; /* no script name */
return args;
}
/*
** Processes options 'e' and 'l', which involve running Lua code, and
** 'W', which also affects the state.
** Returns 0 if some code raises an error.
*/
static int runargs (lua_State *L, char **argv, int n) {
int i;
for (i = 1; i < n; i++) {
int option = argv[i][1];
lua_assert(argv[i][0] == '-'); /* already checked */
switch (option) {
case 'e': case 'l': {
int status;
const char *extra = argv[i] + 2; /* both options need an argument */
if (*extra == '\0') extra = argv[++i];
lua_assert(extra != NULL);
status = (option == 'e')
? dostring(L, extra, "=(command line)")
: dolibrary(L, extra);
if (status != LUA_OK) return 0;
break;
}
case 'W':
lua_warning(L, "@on", 0); /* warnings on */
break;
}
}
return 1;
}
static int handle_luainit (lua_State *L) {
const char *name = "=" LUA_INITVARVERSION;
const char *init = getenv(name + 1);
if (init == NULL) {
name = "=" LUA_INIT_VAR;
init = getenv(name + 1); /* try alternative name */
}
if (init == NULL) return LUA_OK;
else if (init[0] == '@')
return dofile(L, init+1);
else
return dostring(L, init, name);
}
/*
** {==================================================================
** Read-Eval-Print Loop (REPL)
** ===================================================================
*/
#if !defined(LUA_PROMPT)
#define LUA_PROMPT "> "
#define LUA_PROMPT2 ">> "
#endif
#if !defined(LUA_MAXINPUT)
#define LUA_MAXINPUT 512
#endif
/*
** lua_stdin_is_tty detects whether the standard input is a 'tty' (that
** is, whether we're running lua interactively).
*/
#if !defined(lua_stdin_is_tty) /* { */
#if defined(LUA_USE_POSIX) /* { */
#include <unistd.h>
#define lua_stdin_is_tty() isatty(0)
#elif defined(LUA_USE_WINDOWS) /* }{ */
#include <io.h>
#include <windows.h>
#define lua_stdin_is_tty() _isatty(_fileno(stdin))
#else /* }{ */
/* ISO C definition */
#define lua_stdin_is_tty() 1 /* assume stdin is a tty */
#endif /* } */
#endif /* } */
/*
** lua_readline defines how to show a prompt and then read a line from
** the standard input.
** lua_saveline defines how to "save" a read line in a "history".
** lua_freeline defines how to free a line read by lua_readline.
*/
#if !defined(lua_readline) /* { */
#if defined(LUA_USE_READLINE) /* { */
#include <readline/readline.h>
#include <readline/history.h>
#define lua_initreadline(L) ((void)L, rl_readline_name="lua")
#define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL)
#define lua_saveline(L,line) ((void)L, add_history(line))
#define lua_freeline(L,b) ((void)L, free(b))
#else /* }{ */
#define lua_initreadline(L) ((void)L)
#define lua_readline(L,b,p) \
((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */
#define lua_saveline(L,line) { (void)L; (void)line; }
#define lua_freeline(L,b) { (void)L; (void)b; }
#endif /* } */
#endif /* } */
/* /*
** Returns the string to be used as a prompt by the interpreter. ** Returns the string to be used as a prompt by the interpreter.
*/ */
@ -404,6 +554,7 @@ static void doREPL (lua_State *L) {
int status; int status;
const char *oldprogname = progname; const char *oldprogname = progname;
progname = NULL; /* no 'progname' on errors in interactive mode */ progname = NULL; /* no 'progname' on errors in interactive mode */
lua_initreadline(L);
while ((status = loadline(L)) != -1) { while ((status = loadline(L)) != -1) {
if (status == LUA_OK) if (status == LUA_OK)
status = docall(L, 0, LUA_MULTRET); status = docall(L, 0, LUA_MULTRET);
@ -415,133 +566,7 @@ static void doREPL (lua_State *L) {
progname = oldprogname; progname = oldprogname;
} }
/* }================================================================== */
/*
** Push on the stack the contents of table 'arg' from 1 to #arg
*/
static int pushargs (lua_State *L) {
int i, n;
if (lua_getglobal(L, "arg") != LUA_TTABLE)
luaL_error(L, "'arg' is not a table");
n = (int)luaL_len(L, -1);
luaL_checkstack(L, n + 3, "too many arguments to script");
for (i = 1; i <= n; i++)
lua_rawgeti(L, -i, i);
lua_remove(L, -i); /* remove table from the stack */
return n;
}
static int handle_script (lua_State *L, char **argv) {
int status;
const char *fname = argv[0];
if (strcmp(fname, "-") == 0 && strcmp(argv[-1], "--") != 0)
fname = NULL; /* stdin */
status = luaL_loadfile(L, fname);
if (status == LUA_OK) {
int n = pushargs(L); /* push arguments to script */
status = docall(L, n, LUA_MULTRET);
}
return report(L, status);
}
/* bits of various argument indicators in 'args' */
#define has_error 1 /* bad option */
#define has_i 2 /* -i */
#define has_v 4 /* -v */
#define has_e 8 /* -e */
#define has_E 16 /* -E */
/*
** Traverses all arguments from 'argv', returning a mask with those
** needed before running any Lua code (or an error code if it finds
** any invalid argument). 'first' returns the first not-handled argument
** (either the script name or a bad argument in case of error).
*/
static int collectargs (char **argv, int *first) {
int args = 0;
int i;
for (i = 1; argv[i] != NULL; i++) {
*first = i;
if (argv[i][0] != '-') /* not an option? */
return args; /* stop handling options */
switch (argv[i][1]) { /* else check option */
case '-': /* '--' */
if (argv[i][2] != '\0') /* extra characters after '--'? */
return has_error; /* invalid option */
*first = i + 1;
return args;
case '\0': /* '-' */
return args; /* script "name" is '-' */
case 'E':
if (argv[i][2] != '\0') /* extra characters after 1st? */
return has_error; /* invalid option */
args |= has_E;
break;
case 'i':
args |= has_i; /* (-i implies -v) *//* FALLTHROUGH */
case 'v':
if (argv[i][2] != '\0') /* extra characters after 1st? */
return has_error; /* invalid option */
args |= has_v;
break;
case 'e':
args |= has_e; /* FALLTHROUGH */
case 'l': /* both options need an argument */
if (argv[i][2] == '\0') { /* no concatenated argument? */
i++; /* try next 'argv' */
if (argv[i] == NULL || argv[i][0] == '-')
return has_error; /* no next argument or it is another option */
}
break;
default: /* invalid option */
return has_error;
}
}
*first = i; /* no script name */
return args;
}
/*
** Processes options 'e' and 'l', which involve running Lua code.
** Returns 0 if some code raises an error.
*/
static int runargs (lua_State *L, char **argv, int n) {
int i;
for (i = 1; i < n; i++) {
int option = argv[i][1];
lua_assert(argv[i][0] == '-'); /* already checked */
if (option == 'e' || option == 'l') {
int status;
const char *extra = argv[i] + 2; /* both options need an argument */
if (*extra == '\0') extra = argv[++i];
lua_assert(extra != NULL);
status = (option == 'e')
? dostring(L, extra, "=(command line)")
: dolibrary(L, extra);
if (status != LUA_OK) return 0;
}
}
return 1;
}
static int handle_luainit (lua_State *L) {
const char *name = "=" LUA_INITVARVERSION;
const char *init = getenv(name + 1);
if (init == NULL) {
name = "=" LUA_INIT_VAR;
init = getenv(name + 1); /* try alternative name */
}
if (init == NULL) return LUA_OK;
else if (init[0] == '@')
return dofile(L, init+1);
else
return dostring(L, init, name);
}
/* /*
@ -567,6 +592,7 @@ static int pmain (lua_State *L) {
} }
luaL_openlibs(L); /* open standard libraries */ luaL_openlibs(L); /* open standard libraries */
createargtable(L, argv, argc, script); /* create table 'arg' */ createargtable(L, argv, argc, script); /* create table 'arg' */
lua_gc(L, LUA_GCGEN, 0, 0); /* GC in generational mode */
if (!(args & has_E)) { /* no option '-E'? */ if (!(args & has_E)) { /* no option '-E'? */
if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */ if (handle_luainit(L) != LUA_OK) /* run LUA_INIT */
return 0; /* error running LUA_INIT */ return 0; /* error running LUA_INIT */

65
lua-5.3.3/src/lua.h → lua-5.4.0/src/lua.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lua.h,v 1.331 2016/05/30 15:53:28 roberto Exp $ ** $Id: lua.h $
** Lua - A Scripting Language ** Lua - A Scripting Language
** Lua.org, PUC-Rio, Brazil (http://www.lua.org) ** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
** See Copyright Notice at the end of this file ** See Copyright Notice at the end of this file
@ -17,13 +17,15 @@
#define LUA_VERSION_MAJOR "5" #define LUA_VERSION_MAJOR "5"
#define LUA_VERSION_MINOR "3" #define LUA_VERSION_MINOR "4"
#define LUA_VERSION_NUM 503 #define LUA_VERSION_RELEASE "0"
#define LUA_VERSION_RELEASE "3"
#define LUA_VERSION_NUM 504
#define LUA_VERSION_RELEASE_NUM (LUA_VERSION_NUM * 100 + 0)
#define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR #define LUA_VERSION "Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
#define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE #define LUA_RELEASE LUA_VERSION "." LUA_VERSION_RELEASE
#define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2016 Lua.org, PUC-Rio" #define LUA_COPYRIGHT LUA_RELEASE " Copyright (C) 1994-2020 Lua.org, PUC-Rio"
#define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes" #define LUA_AUTHORS "R. Ierusalimschy, L. H. de Figueiredo, W. Celes"
@ -49,8 +51,7 @@
#define LUA_ERRRUN 2 #define LUA_ERRRUN 2
#define LUA_ERRSYNTAX 3 #define LUA_ERRSYNTAX 3
#define LUA_ERRMEM 4 #define LUA_ERRMEM 4
#define LUA_ERRGCMM 5 #define LUA_ERRERR 5
#define LUA_ERRERR 6
typedef struct lua_State lua_State; typedef struct lua_State lua_State;
@ -71,7 +72,7 @@ typedef struct lua_State lua_State;
#define LUA_TUSERDATA 7 #define LUA_TUSERDATA 7
#define LUA_TTHREAD 8 #define LUA_TTHREAD 8
#define LUA_NUMTAGS 9 #define LUA_NUMTYPES 9
@ -124,6 +125,13 @@ typedef int (*lua_Writer) (lua_State *L, const void *p, size_t sz, void *ud);
typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize); typedef void * (*lua_Alloc) (void *ud, void *ptr, size_t osize, size_t nsize);
/*
** Type for warning functions
*/
typedef void (*lua_WarnFunction) (void *ud, const char *msg, int tocont);
/* /*
** generic extra include file ** generic extra include file
@ -145,11 +153,12 @@ extern const char lua_ident[];
LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud); LUA_API lua_State *(lua_newstate) (lua_Alloc f, void *ud);
LUA_API void (lua_close) (lua_State *L); LUA_API void (lua_close) (lua_State *L);
LUA_API lua_State *(lua_newthread) (lua_State *L); LUA_API lua_State *(lua_newthread) (lua_State *L);
LUA_API int (lua_resetthread) (lua_State *L);
LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf); LUA_API lua_CFunction (lua_atpanic) (lua_State *L, lua_CFunction panicf);
LUA_API const lua_Number *(lua_version) (lua_State *L); LUA_API lua_Number (lua_version) (lua_State *L);
/* /*
@ -182,7 +191,7 @@ LUA_API lua_Number (lua_tonumberx) (lua_State *L, int idx, int *isnum);
LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum); LUA_API lua_Integer (lua_tointegerx) (lua_State *L, int idx, int *isnum);
LUA_API int (lua_toboolean) (lua_State *L, int idx); LUA_API int (lua_toboolean) (lua_State *L, int idx);
LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len); LUA_API const char *(lua_tolstring) (lua_State *L, int idx, size_t *len);
LUA_API size_t (lua_rawlen) (lua_State *L, int idx); LUA_API lua_Unsigned (lua_rawlen) (lua_State *L, int idx);
LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx); LUA_API lua_CFunction (lua_tocfunction) (lua_State *L, int idx);
LUA_API void *(lua_touserdata) (lua_State *L, int idx); LUA_API void *(lua_touserdata) (lua_State *L, int idx);
LUA_API lua_State *(lua_tothread) (lua_State *L, int idx); LUA_API lua_State *(lua_tothread) (lua_State *L, int idx);
@ -247,9 +256,9 @@ LUA_API int (lua_rawgeti) (lua_State *L, int idx, lua_Integer n);
LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p); LUA_API int (lua_rawgetp) (lua_State *L, int idx, const void *p);
LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec); LUA_API void (lua_createtable) (lua_State *L, int narr, int nrec);
LUA_API void *(lua_newuserdata) (lua_State *L, size_t sz); LUA_API void *(lua_newuserdatauv) (lua_State *L, size_t sz, int nuvalue);
LUA_API int (lua_getmetatable) (lua_State *L, int objindex); LUA_API int (lua_getmetatable) (lua_State *L, int objindex);
LUA_API int (lua_getuservalue) (lua_State *L, int idx); LUA_API int (lua_getiuservalue) (lua_State *L, int idx, int n);
/* /*
@ -263,7 +272,7 @@ LUA_API void (lua_rawset) (lua_State *L, int idx);
LUA_API void (lua_rawseti) (lua_State *L, int idx, lua_Integer n); LUA_API void (lua_rawseti) (lua_State *L, int idx, lua_Integer n);
LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p); LUA_API void (lua_rawsetp) (lua_State *L, int idx, const void *p);
LUA_API int (lua_setmetatable) (lua_State *L, int objindex); LUA_API int (lua_setmetatable) (lua_State *L, int objindex);
LUA_API void (lua_setuservalue) (lua_State *L, int idx); LUA_API int (lua_setiuservalue) (lua_State *L, int idx, int n);
/* /*
@ -288,13 +297,21 @@ LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);
*/ */
LUA_API int (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx, LUA_API int (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx,
lua_KFunction k); lua_KFunction k);
LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg); LUA_API int (lua_resume) (lua_State *L, lua_State *from, int narg,
int *nres);
LUA_API int (lua_status) (lua_State *L); LUA_API int (lua_status) (lua_State *L);
LUA_API int (lua_isyieldable) (lua_State *L); LUA_API int (lua_isyieldable) (lua_State *L);
#define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL) #define lua_yield(L,n) lua_yieldk(L, (n), 0, NULL)
/*
** Warning-related functions
*/
LUA_API void (lua_setwarnf) (lua_State *L, lua_WarnFunction f, void *ud);
LUA_API void (lua_warning) (lua_State *L, const char *msg, int tocont);
/* /*
** garbage-collection function and options ** garbage-collection function and options
*/ */
@ -308,8 +325,10 @@ LUA_API int (lua_isyieldable) (lua_State *L);
#define LUA_GCSETPAUSE 6 #define LUA_GCSETPAUSE 6
#define LUA_GCSETSTEPMUL 7 #define LUA_GCSETSTEPMUL 7
#define LUA_GCISRUNNING 9 #define LUA_GCISRUNNING 9
#define LUA_GCGEN 10
#define LUA_GCINC 11
LUA_API int (lua_gc) (lua_State *L, int what, int data); LUA_API int (lua_gc) (lua_State *L, int what, ...);
/* /*
@ -328,6 +347,7 @@ LUA_API size_t (lua_stringtonumber) (lua_State *L, const char *s);
LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud); LUA_API lua_Alloc (lua_getallocf) (lua_State *L, void **ud);
LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud); LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
LUA_API void (lua_toclose) (lua_State *L, int idx);
/* /*
@ -377,7 +397,7 @@ LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
/* /*
** {============================================================== ** {==============================================================
** compatibility macros for unsigned conversions ** compatibility macros
** =============================================================== ** ===============================================================
*/ */
#if defined(LUA_COMPAT_APIINTCASTS) #if defined(LUA_COMPAT_APIINTCASTS)
@ -387,6 +407,13 @@ LUA_API void (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
#define lua_tounsigned(L,i) lua_tounsignedx(L,(i),NULL) #define lua_tounsigned(L,i) lua_tounsignedx(L,(i),NULL)
#endif #endif
#define lua_newuserdata(L,s) lua_newuserdatauv(L,s,1)
#define lua_getuservalue(L,idx) lua_getiuservalue(L,idx,1)
#define lua_setuservalue(L,idx) lua_setiuservalue(L,idx,1)
#define LUA_NUMTAGS LUA_NUMTYPES
/* }============================================================== */ /* }============================================================== */
/* /*
@ -437,6 +464,7 @@ LUA_API lua_Hook (lua_gethook) (lua_State *L);
LUA_API int (lua_gethookmask) (lua_State *L); LUA_API int (lua_gethookmask) (lua_State *L);
LUA_API int (lua_gethookcount) (lua_State *L); LUA_API int (lua_gethookcount) (lua_State *L);
LUA_API int (lua_setcstacklimit) (lua_State *L, unsigned int limit);
struct lua_Debug { struct lua_Debug {
int event; int event;
@ -444,6 +472,7 @@ struct lua_Debug {
const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */ const char *namewhat; /* (n) 'global', 'local', 'field', 'method' */
const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */ const char *what; /* (S) 'Lua', 'C', 'main', 'tail' */
const char *source; /* (S) */ const char *source; /* (S) */
size_t srclen; /* (S) */
int currentline; /* (l) */ int currentline; /* (l) */
int linedefined; /* (S) */ int linedefined; /* (S) */
int lastlinedefined; /* (S) */ int lastlinedefined; /* (S) */
@ -451,6 +480,8 @@ struct lua_Debug {
unsigned char nparams;/* (u) number of parameters */ unsigned char nparams;/* (u) number of parameters */
char isvararg; /* (u) */ char isvararg; /* (u) */
char istailcall; /* (t) */ char istailcall; /* (t) */
unsigned short ftransfer; /* (r) index of first value transferred */
unsigned short ntransfer; /* (r) number of transferred values */
char short_src[LUA_IDSIZE]; /* (S) */ char short_src[LUA_IDSIZE]; /* (S) */
/* private part */ /* private part */
struct CallInfo *i_ci; /* active function */ struct CallInfo *i_ci; /* active function */
@ -460,7 +491,7 @@ struct lua_Debug {
/****************************************************************************** /******************************************************************************
* Copyright (C) 1994-2016 Lua.org, PUC-Rio. * Copyright (C) 1994-2020 Lua.org, PUC-Rio.
* *
* Permission is hereby granted, free of charge, to any person obtaining * Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the * a copy of this software and associated documentation files (the

0
lua-5.3.3/src/lua.hpp → lua-5.4.0/src/lua.hpp
View File

475
lua-5.3.3/src/luac.c → lua-5.4.0/src/luac.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $ ** $Id: luac.c $
** Lua compiler (saves bytecodes to files; also lists bytecodes) ** Lua compiler (saves bytecodes to files; also lists bytecodes)
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -18,7 +18,10 @@
#include "lua.h" #include "lua.h"
#include "lauxlib.h" #include "lauxlib.h"
#include "ldebug.h"
#include "lobject.h" #include "lobject.h"
#include "lopcodes.h"
#include "lopnames.h"
#include "lstate.h" #include "lstate.h"
#include "lundump.h" #include "lundump.h"
@ -34,6 +37,7 @@ static int stripping=0; /* strip debug information? */
static char Output[]={ OUTPUT }; /* default output file name */ static char Output[]={ OUTPUT }; /* default output file name */
static const char* output=Output; /* actual output file name */ static const char* output=Output; /* actual output file name */
static const char* progname=PROGNAME; /* actual program name */ static const char* progname=PROGNAME; /* actual program name */
static TString **tmname;
static void fatal(const char* message) static void fatal(const char* message)
{ {
@ -119,7 +123,7 @@ static int doargs(int argc, char* argv[])
#define FUNCTION "(function()end)();" #define FUNCTION "(function()end)();"
static const char* reader(lua_State *L, void *ud, size_t *size) static const char* reader(lua_State* L, void* ud, size_t* size)
{ {
UNUSED(L); UNUSED(L);
if ((*(int*)ud)--) if ((*(int*)ud)--)
@ -134,7 +138,7 @@ static const char* reader(lua_State *L, void *ud, size_t *size)
} }
} }
#define toproto(L,i) getproto(L->top+(i)) #define toproto(L,i) getproto(s2v(L->top+(i)))
static const Proto* combine(lua_State* L, int n) static const Proto* combine(lua_State* L, int n)
{ {
@ -168,6 +172,7 @@ static int pmain(lua_State* L)
char** argv=(char**)lua_touserdata(L,2); char** argv=(char**)lua_touserdata(L,2);
const Proto* f; const Proto* f;
int i; int i;
tmname=G(L)->tmname;
if (!lua_checkstack(L,argc)) fatal("too many input files"); if (!lua_checkstack(L,argc)) fatal("too many input files");
for (i=0; i<argc; i++) for (i=0; i<argc; i++)
{ {
@ -206,63 +211,102 @@ int main(int argc, char* argv[])
} }
/* /*
** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $
** print bytecodes ** print bytecodes
** See Copyright Notice in lua.h
*/ */
#include <ctype.h> #define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
#include <stdio.h> #define VOID(p) ((const void*)(p))
#define eventname(i) (getstr(tmname[i]))
#define luac_c
#define LUA_CORE
#include "ldebug.h"
#include "lobject.h"
#include "lopcodes.h"
#define VOID(p) ((const void*)(p))
static void PrintString(const TString* ts) static void PrintString(const TString* ts)
{ {
const char* s=getstr(ts); const char* s=getstr(ts);
size_t i,n=tsslen(ts); size_t i,n=tsslen(ts);
printf("%c",'"'); printf("\"");
for (i=0; i<n; i++) for (i=0; i<n; i++)
{ {
int c=(int)(unsigned char)s[i]; int c=(int)(unsigned char)s[i];
switch (c) switch (c)
{ {
case '"': printf("\\\""); break; case '"':
case '\\': printf("\\\\"); break; printf("\\\"");
case '\a': printf("\\a"); break; break;
case '\b': printf("\\b"); break; case '\\':
case '\f': printf("\\f"); break; printf("\\\\");
case '\n': printf("\\n"); break; break;
case '\r': printf("\\r"); break; case '\a':
case '\t': printf("\\t"); break; printf("\\a");
case '\v': printf("\\v"); break; break;
default: if (isprint(c)) case '\b':
printf("%c",c); printf("\\b");
else break;
printf("\\%03d",c); case '\f':
printf("\\f");
break;
case '\n':
printf("\\n");
break;
case '\r':
printf("\\r");
break;
case '\t':
printf("\\t");
break;
case '\v':
printf("\\v");
break;
default:
if (isprint(c)) printf("%c",c); else printf("\\%03d",c);
break;
} }
} }
printf("%c",'"'); printf("\"");
}
static void PrintType(const Proto* f, int i)
{
const TValue* o=&f->k[i];
switch (ttypetag(o))
{
case LUA_VNIL:
printf("N");
break;
case LUA_VFALSE:
case LUA_VTRUE:
printf("B");
break;
case LUA_VNUMFLT:
printf("F");
break;
case LUA_VNUMINT:
printf("I");
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
printf("S");
break;
default: /* cannot happen */
printf("?%d",ttypetag(o));
break;
}
printf("\t");
} }
static void PrintConstant(const Proto* f, int i) static void PrintConstant(const Proto* f, int i)
{ {
const TValue* o=&f->k[i]; const TValue* o=&f->k[i];
switch (ttype(o)) switch (ttypetag(o))
{ {
case LUA_TNIL: case LUA_VNIL:
printf("nil"); printf("nil");
break; break;
case LUA_TBOOLEAN: case LUA_VFALSE:
printf(bvalue(o) ? "true" : "false"); printf("false");
break; break;
case LUA_TNUMFLT: case LUA_VTRUE:
printf("true");
break;
case LUA_VNUMFLT:
{ {
char buff[100]; char buff[100];
sprintf(buff,LUA_NUMBER_FMT,fltvalue(o)); sprintf(buff,LUA_NUMBER_FMT,fltvalue(o));
@ -270,20 +314,23 @@ static void PrintConstant(const Proto* f, int i)
if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0"); if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0");
break; break;
} }
case LUA_TNUMINT: case LUA_VNUMINT:
printf(LUA_INTEGER_FMT,ivalue(o)); printf(LUA_INTEGER_FMT,ivalue(o));
break; break;
case LUA_TSHRSTR: case LUA_TLNGSTR: case LUA_VSHRSTR:
case LUA_VLNGSTR:
PrintString(tsvalue(o)); PrintString(tsvalue(o));
break; break;
default: /* cannot happen */ default: /* cannot happen */
printf("? type=%d",ttype(o)); printf("?%d",ttypetag(o));
break; break;
} }
} }
#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-") #define COMMENT "\t; "
#define MYK(x) (-1-(x)) #define EXTRAARG GETARG_Ax(code[pc+1])
#define EXTRAARGC (EXTRAARG*(MAXARG_C+1))
#define ISK (isk ? "k" : "")
static void PrintCode(const Proto* f) static void PrintCode(const Proto* f)
{ {
@ -298,97 +345,324 @@ static void PrintCode(const Proto* f)
int c=GETARG_C(i); int c=GETARG_C(i);
int ax=GETARG_Ax(i); int ax=GETARG_Ax(i);
int bx=GETARG_Bx(i); int bx=GETARG_Bx(i);
int sb=GETARG_sB(i);
int sc=GETARG_sC(i);
int sbx=GETARG_sBx(i); int sbx=GETARG_sBx(i);
int line=getfuncline(f,pc); int isk=GETARG_k(i);
int line=luaG_getfuncline(f,pc);
printf("\t%d\t",pc+1); printf("\t%d\t",pc+1);
if (line>0) printf("[%d]\t",line); else printf("[-]\t"); if (line>0) printf("[%d]\t",line); else printf("[-]\t");
printf("%-9s\t",luaP_opnames[o]); printf("%-9s\t",opnames[o]);
switch (getOpMode(o))
{
case iABC:
printf("%d",a);
if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);
if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);
break;
case iABx:
printf("%d",a);
if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));
if (getBMode(o)==OpArgU) printf(" %d",bx);
break;
case iAsBx:
printf("%d %d",a,sbx);
break;
case iAx:
printf("%d",MYK(ax));
break;
}
switch (o) switch (o)
{ {
case OP_MOVE:
printf("%d %d",a,b);
break;
case OP_LOADI:
printf("%d %d",a,sbx);
break;
case OP_LOADF:
printf("%d %d",a,sbx);
break;
case OP_LOADK: case OP_LOADK:
printf("\t; "); PrintConstant(f,bx); printf("%d %d",a,bx);
break; printf(COMMENT); PrintConstant(f,bx);
break;
case OP_LOADKX:
printf("%d",a);
printf(COMMENT); PrintConstant(f,EXTRAARG);
break;
case OP_LOADFALSE:
printf("%d",a);
break;
case OP_LFALSESKIP:
printf("%d",a);
break;
case OP_LOADTRUE:
printf("%d",a);
break;
case OP_LOADNIL:
printf("%d %d",a,b);
printf(COMMENT "%d out",b+1);
break;
case OP_GETUPVAL: case OP_GETUPVAL:
printf("%d %d",a,b);
printf(COMMENT "%s",UPVALNAME(b));
break;
case OP_SETUPVAL: case OP_SETUPVAL:
printf("\t; %s",UPVALNAME(b)); printf("%d %d",a,b);
break; printf(COMMENT "%s",UPVALNAME(b));
break;
case OP_GETTABUP: case OP_GETTABUP:
printf("\t; %s",UPVALNAME(b)); printf("%d %d %d",a,b,c);
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); } printf(COMMENT "%s",UPVALNAME(b));
break; printf(" "); PrintConstant(f,c);
case OP_SETTABUP: break;
printf("\t; %s",UPVALNAME(a));
if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }
if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
break;
case OP_GETTABLE: case OP_GETTABLE:
case OP_SELF: printf("%d %d %d",a,b,c);
if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); } break;
break; case OP_GETI:
printf("%d %d %d",a,b,c);
break;
case OP_GETFIELD:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_SETTABUP:
printf("%d %d %d%s",a,b,c,ISK);
printf(COMMENT "%s",UPVALNAME(a));
printf(" "); PrintConstant(f,b);
if (isk) { printf(" "); PrintConstant(f,c); }
break;
case OP_SETTABLE: case OP_SETTABLE:
printf("%d %d %d%s",a,b,c,ISK);
if (isk) { printf(COMMENT); PrintConstant(f,c); }
break;
case OP_SETI:
printf("%d %d %d%s",a,b,c,ISK);
if (isk) { printf(COMMENT); PrintConstant(f,c); }
break;
case OP_SETFIELD:
printf("%d %d %d%s",a,b,c,ISK);
printf(COMMENT); PrintConstant(f,b);
if (isk) { printf(" "); PrintConstant(f,c); }
break;
case OP_NEWTABLE:
printf("%d %d %d",a,b,c);
printf(COMMENT "%d",c+EXTRAARGC);
break;
case OP_SELF:
printf("%d %d %d%s",a,b,c,ISK);
if (isk) { printf(COMMENT); PrintConstant(f,c); }
break;
case OP_ADDI:
printf("%d %d %d",a,b,sc);
break;
case OP_ADDK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_SUBK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_MULK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_MODK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_POWK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_DIVK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_IDIVK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_BANDK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_BORK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_BXORK:
printf("%d %d %d",a,b,c);
printf(COMMENT); PrintConstant(f,c);
break;
case OP_SHRI:
printf("%d %d %d",a,b,sc);
break;
case OP_SHLI:
printf("%d %d %d",a,b,sc);
break;
case OP_ADD: case OP_ADD:
printf("%d %d %d",a,b,c);
break;
case OP_SUB: case OP_SUB:
printf("%d %d %d",a,b,c);
break;
case OP_MUL: case OP_MUL:
printf("%d %d %d",a,b,c);
break;
case OP_MOD:
printf("%d %d %d",a,b,c);
break;
case OP_POW: case OP_POW:
printf("%d %d %d",a,b,c);
break;
case OP_DIV: case OP_DIV:
printf("%d %d %d",a,b,c);
break;
case OP_IDIV: case OP_IDIV:
printf("%d %d %d",a,b,c);
break;
case OP_BAND: case OP_BAND:
printf("%d %d %d",a,b,c);
break;
case OP_BOR: case OP_BOR:
printf("%d %d %d",a,b,c);
break;
case OP_BXOR: case OP_BXOR:
printf("%d %d %d",a,b,c);
break;
case OP_SHL: case OP_SHL:
printf("%d %d %d",a,b,c);
break;
case OP_SHR: case OP_SHR:
case OP_EQ: printf("%d %d %d",a,b,c);
case OP_LT: break;
case OP_LE: case OP_MMBIN:
if (ISK(b) || ISK(c)) printf("%d %d %d",a,b,c);
{ printf(COMMENT "%s",eventname(c));
printf("\t; "); break;
if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-"); case OP_MMBINI:
printf(" "); printf("%d %d %d %d",a,sb,c,isk);
if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-"); printf(COMMENT "%s",eventname(c));
} if (isk) printf(" flip");
break; break;
case OP_MMBINK:
printf("%d %d %d %d",a,b,c,isk);
printf(COMMENT "%s ",eventname(c)); PrintConstant(f,b);
if (isk) printf(" flip");
break;
case OP_UNM:
printf("%d %d",a,b);
break;
case OP_BNOT:
printf("%d %d",a,b);
break;
case OP_NOT:
printf("%d %d",a,b);
break;
case OP_LEN:
printf("%d %d",a,b);
break;
case OP_CONCAT:
printf("%d %d",a,b);
break;
case OP_CLOSE:
printf("%d",a);
break;
case OP_TBC:
printf("%d",a);
break;
case OP_JMP: case OP_JMP:
printf("%d",GETARG_sJ(i));
printf(COMMENT "to %d",GETARG_sJ(i)+pc+2);
break;
case OP_EQ:
printf("%d %d %d",a,b,isk);
break;
case OP_LT:
printf("%d %d %d",a,b,isk);
break;
case OP_LE:
printf("%d %d %d",a,b,isk);
break;
case OP_EQK:
printf("%d %d %d",a,b,isk);
printf(COMMENT); PrintConstant(f,b);
break;
case OP_EQI:
printf("%d %d %d",a,sb,isk);
break;
case OP_LTI:
printf("%d %d %d",a,sb,isk);
break;
case OP_LEI:
printf("%d %d %d",a,sb,isk);
break;
case OP_GTI:
printf("%d %d %d",a,sb,isk);
break;
case OP_GEI:
printf("%d %d %d",a,sb,isk);
break;
case OP_TEST:
printf("%d %d",a,isk);
break;
case OP_TESTSET:
printf("%d %d %d",a,b,isk);
break;
case OP_CALL:
printf("%d %d %d",a,b,c);
printf(COMMENT);
if (b==0) printf("all in "); else printf("%d in ",b-1);
if (c==0) printf("all out"); else printf("%d out",c-1);
break;
case OP_TAILCALL:
printf("%d %d %d",a,b,c);
printf(COMMENT "%d in",b-1);
break;
case OP_RETURN:
printf("%d %d %d",a,b,c);
printf(COMMENT);
if (b==0) printf("all out"); else printf("%d out",b-1);
break;
case OP_RETURN0:
break;
case OP_RETURN1:
printf("%d",a);
break;
case OP_FORLOOP: case OP_FORLOOP:
printf("%d %d",a,bx);
printf(COMMENT "to %d",pc-bx+2);
break;
case OP_FORPREP: case OP_FORPREP:
printf("%d %d",a,bx);
printf(COMMENT "to %d",pc+bx+2);
break;
case OP_TFORPREP:
printf("%d %d",a,bx);
printf(COMMENT "to %d",pc+bx+2);
break;
case OP_TFORCALL:
printf("%d %d",a,c);
break;
case OP_TFORLOOP: case OP_TFORLOOP:
printf("\t; to %d",sbx+pc+2); printf("%d %d",a,bx);
break; printf(COMMENT "to %d",pc-bx+2);
case OP_CLOSURE: break;
printf("\t; %p",VOID(f->p[bx]));
break;
case OP_SETLIST: case OP_SETLIST:
if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c); printf("%d %d %d",a,b,c);
break; if (isk) printf(COMMENT "%d",c+EXTRAARGC);
break;
case OP_CLOSURE:
printf("%d %d",a,bx);
printf(COMMENT "%p",VOID(f->p[bx]));
break;
case OP_VARARG:
printf("%d %d",a,c);
printf(COMMENT);
if (c==0) printf("all out"); else printf("%d out",c-1);
break;
case OP_VARARGPREP:
printf("%d",a);
break;
case OP_EXTRAARG: case OP_EXTRAARG:
printf("\t; "); PrintConstant(f,ax); printf("%d",ax);
break; break;
#if 0
default: default:
break; printf("%d %d %d",a,b,c);
printf(COMMENT "not handled");
break;
#endif
} }
printf("\n"); printf("\n");
} }
} }
#define SS(x) ((x==1)?"":"s") #define SS(x) ((x==1)?"":"s")
#define S(x) (int)(x),SS(x) #define S(x) (int)(x),SS(x)
@ -402,7 +676,7 @@ static void PrintHeader(const Proto* f)
else else
s="(string)"; s="(string)";
printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n", printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
(f->linedefined==0)?"main":"function",s, (f->linedefined==0)?"main":"function",s,
f->linedefined,f->lastlinedefined, f->linedefined,f->lastlinedefined,
S(f->sizecode),VOID(f)); S(f->sizecode),VOID(f));
printf("%d%s param%s, %d slot%s, %d upvalue%s, ", printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
@ -419,7 +693,8 @@ static void PrintDebug(const Proto* f)
printf("constants (%d) for %p:\n",n,VOID(f)); printf("constants (%d) for %p:\n",n,VOID(f));
for (i=0; i<n; i++) for (i=0; i<n; i++)
{ {
printf("\t%d\t",i+1); printf("\t%d\t",i);
PrintType(f,i);
PrintConstant(f,i); PrintConstant(f,i);
printf("\n"); printf("\n");
} }

293
lua-5.3.3/src/luaconf.h → lua-5.4.0/src/luaconf.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: luaconf.h,v 1.255 2016/05/01 20:06:09 roberto Exp $ ** $Id: luaconf.h $
** Configuration file for Lua ** Configuration file for Lua
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -14,6 +14,16 @@
/* /*
** =================================================================== ** ===================================================================
** General Configuration File for Lua
**
** Some definitions here can be changed externally, through the
** compiler (e.g., with '-D' options). Those are protected by
** '#if !defined' guards. However, several other definitions should
** be changed directly here, either because they affect the Lua
** ABI (by making the changes here, you ensure that all software
** connected to Lua, such as C libraries, will be compiled with the
** same configuration); or because they are seldom changed.
**
** Search for "@@" to find all configurable definitions. ** Search for "@@" to find all configurable definitions.
** =================================================================== ** ===================================================================
*/ */
@ -22,18 +32,23 @@
/* /*
** {==================================================================== ** {====================================================================
** System Configuration: macros to adapt (if needed) Lua to some ** System Configuration: macros to adapt (if needed) Lua to some
** particular platform, for instance compiling it with 32-bit numbers or ** particular platform, for instance restricting it to C89.
** restricting it to C89.
** ===================================================================== ** =====================================================================
*/ */
/* /*
@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You @@ LUAI_MAXCSTACK defines the maximum depth for nested calls and
** can also define LUA_32BITS in the make file, but changing here you ** also limits the maximum depth of other recursive algorithms in
** ensure that all software connected to Lua will be compiled with the ** the implementation, such as syntactic analysis. A value too
** same configuration. ** large may allow the interpreter to crash (C-stack overflow).
** The default value seems ok for regular machines, but may be
** too high for restricted hardware.
** The test file 'cstack.lua' may help finding a good limit.
** (It will crash with a limit too high.)
*/ */
/* #define LUA_32BITS */ #if !defined(LUAI_MAXCSTACK)
#define LUAI_MAXCSTACK 2000
#endif
/* /*
@ -61,17 +76,36 @@
#if defined(LUA_USE_LINUX) #if defined(LUA_USE_LINUX)
#define LUA_USE_POSIX #define LUA_USE_POSIX
#define LUA_USE_DLOPEN /* needs an extra library: -ldl */ #define LUA_USE_DLOPEN /* needs an extra library: -ldl */
#define LUA_USE_READLINE /* needs some extra libraries */
#endif #endif
#if defined(LUA_USE_MACOSX) #if defined(LUA_USE_MACOSX)
#define LUA_USE_POSIX #define LUA_USE_POSIX
#define LUA_USE_DLOPEN /* MacOS does not need -ldl */ #define LUA_USE_DLOPEN /* MacOS does not need -ldl */
#define LUA_USE_READLINE /* needs an extra library: -lreadline */
#endif #endif
/*
@@ LUAI_IS32INT is true iff 'int' has (at least) 32 bits.
*/
#define LUAI_IS32INT ((UINT_MAX >> 30) >= 3)
/* }================================================================== */
/*
** {==================================================================
** Configuration for Number types.
** ===================================================================
*/
/*
@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats.
*/
/* #define LUA_32BITS */
/* /*
@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
** C89 ('long' and 'double'); Windows always has '__int64', so it does ** C89 ('long' and 'double'); Windows always has '__int64', so it does
@ -82,24 +116,11 @@
#endif #endif
/*
@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
*/
/* avoid undefined shifts */
#if ((INT_MAX >> 15) >> 15) >= 1
#define LUAI_BITSINT 32
#else
/* 'int' always must have at least 16 bits */
#define LUAI_BITSINT 16
#endif
/* /*
@@ LUA_INT_TYPE defines the type for Lua integers. @@ LUA_INT_TYPE defines the type for Lua integers.
@@ LUA_FLOAT_TYPE defines the type for Lua floats. @@ LUA_FLOAT_TYPE defines the type for Lua floats.
** Lua should work fine with any mix of these options (if supported ** Lua should work fine with any mix of these options supported
** by your C compiler). The usual configurations are 64-bit integers ** by your C compiler. The usual configurations are 64-bit integers
** and 'double' (the default), 32-bit integers and 'float' (for ** and 'double' (the default), 32-bit integers and 'float' (for
** restricted platforms), and 'long'/'double' (for C compilers not ** restricted platforms), and 'long'/'double' (for C compilers not
** compliant with C99, which may not have support for 'long long'). ** compliant with C99, which may not have support for 'long long').
@ -119,7 +140,7 @@
/* /*
** 32-bit integers and 'float' ** 32-bit integers and 'float'
*/ */
#if LUAI_BITSINT >= 32 /* use 'int' if big enough */ #if LUAI_IS32INT /* use 'int' if big enough */
#define LUA_INT_TYPE LUA_INT_INT #define LUA_INT_TYPE LUA_INT_INT
#else /* otherwise use 'long' */ #else /* otherwise use 'long' */
#define LUA_INT_TYPE LUA_INT_LONG #define LUA_INT_TYPE LUA_INT_LONG
@ -151,13 +172,24 @@
/* /*
** {================================================================== ** {==================================================================
** Configuration for Paths. ** Configuration for Paths.
** =================================================================== ** ===================================================================
*/ */
/*
** LUA_PATH_SEP is the character that separates templates in a path.
** LUA_PATH_MARK is the string that marks the substitution points in a
** template.
** LUA_EXEC_DIR in a Windows path is replaced by the executable's
** directory.
*/
#define LUA_PATH_SEP ";"
#define LUA_PATH_MARK "?"
#define LUA_EXEC_DIR "!"
/* /*
@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
** Lua libraries. ** Lua libraries.
@ -167,6 +199,7 @@
** hierarchy or if you want to install your libraries in ** hierarchy or if you want to install your libraries in
** non-conventional directories. ** non-conventional directories.
*/ */
#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
#if defined(_WIN32) /* { */ #if defined(_WIN32) /* { */
/* /*
@ -176,27 +209,40 @@
#define LUA_LDIR "!\\lua\\" #define LUA_LDIR "!\\lua\\"
#define LUA_CDIR "!\\" #define LUA_CDIR "!\\"
#define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" #define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\"
#if !defined(LUA_PATH_DEFAULT)
#define LUA_PATH_DEFAULT \ #define LUA_PATH_DEFAULT \
LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \
LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
".\\?.lua;" ".\\?\\init.lua" ".\\?.lua;" ".\\?\\init.lua"
#endif
#if !defined(LUA_CPATH_DEFAULT)
#define LUA_CPATH_DEFAULT \ #define LUA_CPATH_DEFAULT \
LUA_CDIR"?.dll;" \ LUA_CDIR"?.dll;" \
LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
LUA_CDIR"loadall.dll;" ".\\?.dll" LUA_CDIR"loadall.dll;" ".\\?.dll"
#endif
#else /* }{ */ #else /* }{ */
#define LUA_ROOT "/usr/local/" #define LUA_ROOT "/usr/local/"
#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/"
#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/"
#if !defined(LUA_PATH_DEFAULT)
#define LUA_PATH_DEFAULT \ #define LUA_PATH_DEFAULT \
LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \
"./?.lua;" "./?/init.lua" "./?.lua;" "./?/init.lua"
#endif
#if !defined(LUA_CPATH_DEFAULT)
#define LUA_CPATH_DEFAULT \ #define LUA_CPATH_DEFAULT \
LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
#endif
#endif /* } */ #endif /* } */
@ -205,12 +251,16 @@
** CHANGE it if your machine does not use "/" as the directory separator ** CHANGE it if your machine does not use "/" as the directory separator
** and is not Windows. (On Windows Lua automatically uses "\".) ** and is not Windows. (On Windows Lua automatically uses "\".)
*/ */
#if !defined(LUA_DIRSEP)
#if defined(_WIN32) #if defined(_WIN32)
#define LUA_DIRSEP "\\" #define LUA_DIRSEP "\\"
#else #else
#define LUA_DIRSEP "/" #define LUA_DIRSEP "/"
#endif #endif
#endif
/* }================================================================== */ /* }================================================================== */
@ -244,16 +294,18 @@
#endif /* } */ #endif /* } */
/* more often than not the libs go together with the core */ /*
** More often than not the libs go together with the core.
*/
#define LUALIB_API LUA_API #define LUALIB_API LUA_API
#define LUAMOD_API LUALIB_API #define LUAMOD_API LUA_API
/* /*
@@ LUAI_FUNC is a mark for all extern functions that are not to be @@ LUAI_FUNC is a mark for all extern functions that are not to be
** exported to outside modules. ** exported to outside modules.
@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables,
** that are not to be exported to outside modules (LUAI_DDEF for ** none of which to be exported to outside modules (LUAI_DDEF for
** definitions and LUAI_DDEC for declarations). ** definitions and LUAI_DDEC for declarations).
** CHANGE them if you need to mark them in some special way. Elf/gcc ** CHANGE them if you need to mark them in some special way. Elf/gcc
** (versions 3.2 and later) mark them as "hidden" to optimize access ** (versions 3.2 and later) mark them as "hidden" to optimize access
@ -265,12 +317,12 @@
*/ */
#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
defined(__ELF__) /* { */ defined(__ELF__) /* { */
#define LUAI_FUNC __attribute__((visibility("hidden"))) extern #define LUAI_FUNC __attribute__((visibility("internal"))) extern
#else /* }{ */ #else /* }{ */
#define LUAI_FUNC extern #define LUAI_FUNC extern
#endif /* } */ #endif /* } */
#define LUAI_DDEC LUAI_FUNC #define LUAI_DDEC(dec) LUAI_FUNC dec
#define LUAI_DDEF /* empty */ #define LUAI_DDEF /* empty */
/* }================================================================== */ /* }================================================================== */
@ -283,88 +335,43 @@
*/ */
/* /*
@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. @@ LUA_COMPAT_5_3 controls other macros for compatibility with Lua 5.3.
@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
** You can define it to get all options, or change specific options ** You can define it to get all options, or change specific options
** to fit your specific needs. ** to fit your specific needs.
*/ */
#if defined(LUA_COMPAT_5_2) /* { */ #if defined(LUA_COMPAT_5_3) /* { */
/* /*
@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
** functions in the mathematical library. ** functions in the mathematical library.
** (These functions were already officially removed in 5.3;
** nevertheless they are still available here.)
*/ */
#define LUA_COMPAT_MATHLIB #define LUA_COMPAT_MATHLIB
/*
@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
*/
#define LUA_COMPAT_BITLIB
/*
@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
*/
#define LUA_COMPAT_IPAIRS
/* /*
@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
** manipulating other integer types (lua_pushunsigned, lua_tounsigned, ** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
** luaL_checkint, luaL_checklong, etc.) ** luaL_checkint, luaL_checklong, etc.)
** (These macros were also officially removed in 5.3, but they are still
** available here.)
*/ */
#define LUA_COMPAT_APIINTCASTS #define LUA_COMPAT_APIINTCASTS
#endif /* } */
#if defined(LUA_COMPAT_5_1) /* { */
/* Incompatibilities from 5.2 -> 5.3 */
#define LUA_COMPAT_MATHLIB
#define LUA_COMPAT_APIINTCASTS
/* /*
@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. @@ LUA_COMPAT_LT_LE controls the emulation of the '__le' metamethod
** You can replace it with 'table.unpack'. ** using '__lt'.
*/ */
#define LUA_COMPAT_UNPACK #define LUA_COMPAT_LT_LE
/*
@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
** You can replace it with 'package.searchers'.
*/
#define LUA_COMPAT_LOADERS
/*
@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
** You can call your C function directly (with light C functions).
*/
#define lua_cpcall(L,f,u) \
(lua_pushcfunction(L, (f)), \
lua_pushlightuserdata(L,(u)), \
lua_pcall(L,1,0,0))
/*
@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
** You can rewrite 'log10(x)' as 'log(x, 10)'.
*/
#define LUA_COMPAT_LOG10
/*
@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
** library. You can rewrite 'loadstring(s)' as 'load(s)'.
*/
#define LUA_COMPAT_LOADSTRING
/*
@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
*/
#define LUA_COMPAT_MAXN
/* /*
@@ The following macros supply trivial compatibility for some @@ The following macros supply trivial compatibility for some
** changes in the API. The macros themselves document how to ** changes in the API. The macros themselves document how to
** change your code to avoid using them. ** change your code to avoid using them.
** (Once more, these macros were officially removed in 5.3, but they are
** still available here.)
*/ */
#define lua_strlen(L,i) lua_rawlen(L, (i)) #define lua_strlen(L,i) lua_rawlen(L, (i))
@ -373,23 +380,8 @@
#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT)
/*
@@ LUA_COMPAT_MODULE controls compatibility with previous
** module functions 'module' (Lua) and 'luaL_register' (C).
*/
#define LUA_COMPAT_MODULE
#endif /* } */ #endif /* } */
/*
@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
@@ a float mark ('.0').
** This macro is not on by default even in compatibility mode,
** because this is not really an incompatibility.
*/
/* #define LUA_COMPAT_FLOATSTRING */
/* }================================================================== */ /* }================================================================== */
@ -404,16 +396,16 @@
/* /*
@@ LUA_NUMBER is the floating-point type used by Lua. @@ LUA_NUMBER is the floating-point type used by Lua.
@@ LUAI_UACNUMBER is the result of an 'usual argument conversion' @@ LUAI_UACNUMBER is the result of a 'default argument promotion'
@@ over a floating number. @@ over a floating number.
@@ l_mathlim(x) corrects limit name 'x' to the proper float type @@ l_floatatt(x) corrects float attribute 'x' to the proper float type
** by prefixing it with one of FLT/DBL/LDBL. ** by prefixing it with one of FLT/DBL/LDBL.
@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
@@ LUA_NUMBER_FMT is the format for writing floats. @@ LUA_NUMBER_FMT is the format for writing floats.
@@ lua_number2str converts a float to a string. @@ lua_number2str converts a float to a string.
@@ l_mathop allows the addition of an 'l' or 'f' to all math operations. @@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
@@ l_floor takes the floor of a float. @@ l_floor takes the floor of a float.
@@ lua_str2number converts a decimal numeric string to a number. @@ lua_str2number converts a decimal numeral to a number.
*/ */
@ -421,15 +413,17 @@
#define l_floor(x) (l_mathop(floor)(x)) #define l_floor(x) (l_mathop(floor)(x))
#define lua_number2str(s,sz,n) l_sprintf((s), sz, LUA_NUMBER_FMT, (n)) #define lua_number2str(s,sz,n) \
l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
/* /*
@@ lua_numbertointeger converts a float number to an integer, or @@ lua_numbertointeger converts a float number with an integral value
** returns 0 if float is not within the range of a lua_Integer. ** to an integer, or returns 0 if float is not within the range of
** (The range comparisons are tricky because of rounding. The tests ** a lua_Integer. (The range comparisons are tricky because of
** here assume a two-complement representation, where MININTEGER always ** rounding. The tests here assume a two-complement representation,
** has an exact representation as a float; MAXINTEGER may not have one, ** where MININTEGER always has an exact representation as a float;
** and therefore its conversion to float may have an ill-defined value.) ** MAXINTEGER may not have one, and therefore its conversion to float
** may have an ill-defined value.)
*/ */
#define lua_numbertointeger(n,p) \ #define lua_numbertointeger(n,p) \
((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
@ -443,7 +437,7 @@
#define LUA_NUMBER float #define LUA_NUMBER float
#define l_mathlim(n) (FLT_##n) #define l_floatatt(n) (FLT_##n)
#define LUAI_UACNUMBER double #define LUAI_UACNUMBER double
@ -459,7 +453,7 @@
#define LUA_NUMBER long double #define LUA_NUMBER long double
#define l_mathlim(n) (LDBL_##n) #define l_floatatt(n) (LDBL_##n)
#define LUAI_UACNUMBER long double #define LUAI_UACNUMBER long double
@ -474,7 +468,7 @@
#define LUA_NUMBER double #define LUA_NUMBER double
#define l_mathlim(n) (DBL_##n) #define l_floatatt(n) (DBL_##n)
#define LUAI_UACNUMBER double #define LUAI_UACNUMBER double
@ -498,12 +492,14 @@
** **
@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
** **
@@ LUAI_UACINT is the result of an 'usual argument conversion' @@ LUAI_UACINT is the result of a 'default argument promotion'
@@ over a lUA_INTEGER. @@ over a LUA_INTEGER.
@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
@@ LUA_INTEGER_FMT is the format for writing integers. @@ LUA_INTEGER_FMT is the format for writing integers.
@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
@@ LUA_MAXUNSIGNED is the maximum value for a LUA_UNSIGNED.
@@ LUA_UNSIGNEDBITS is the number of bits in a LUA_UNSIGNED.
@@ lua_integer2str converts an integer to a string. @@ lua_integer2str converts an integer to a string.
*/ */
@ -511,10 +507,12 @@
/* The following definitions are good for most cases here */ /* The following definitions are good for most cases here */
#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d"
#define lua_integer2str(s,sz,n) l_sprintf((s), sz, LUA_INTEGER_FMT, (n))
#define LUAI_UACINT LUA_INTEGER #define LUAI_UACINT LUA_INTEGER
#define lua_integer2str(s,sz,n) \
l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))
/* /*
** use LUAI_UACINT here to avoid problems with promotions (which ** use LUAI_UACINT here to avoid problems with promotions (which
** can turn a comparison between unsigneds into a signed comparison) ** can turn a comparison between unsigneds into a signed comparison)
@ -522,6 +520,9 @@
#define LUA_UNSIGNED unsigned LUAI_UACINT #define LUA_UNSIGNED unsigned LUAI_UACINT
#define LUA_UNSIGNEDBITS (sizeof(LUA_UNSIGNED) * CHAR_BIT)
/* now the variable definitions */ /* now the variable definitions */
#if LUA_INT_TYPE == LUA_INT_INT /* { int */ #if LUA_INT_TYPE == LUA_INT_INT /* { int */
@ -532,6 +533,8 @@
#define LUA_MAXINTEGER INT_MAX #define LUA_MAXINTEGER INT_MAX
#define LUA_MININTEGER INT_MIN #define LUA_MININTEGER INT_MIN
#define LUA_MAXUNSIGNED UINT_MAX
#elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */
#define LUA_INTEGER long #define LUA_INTEGER long
@ -540,6 +543,8 @@
#define LUA_MAXINTEGER LONG_MAX #define LUA_MAXINTEGER LONG_MAX
#define LUA_MININTEGER LONG_MIN #define LUA_MININTEGER LONG_MIN
#define LUA_MAXUNSIGNED ULONG_MAX
#elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */
/* use presence of macro LLONG_MAX as proxy for C99 compliance */ /* use presence of macro LLONG_MAX as proxy for C99 compliance */
@ -552,6 +557,8 @@
#define LUA_MAXINTEGER LLONG_MAX #define LUA_MAXINTEGER LLONG_MAX
#define LUA_MININTEGER LLONG_MIN #define LUA_MININTEGER LLONG_MIN
#define LUA_MAXUNSIGNED ULLONG_MAX
#elif defined(LUA_USE_WINDOWS) /* }{ */ #elif defined(LUA_USE_WINDOWS) /* }{ */
/* in Windows, can use specific Windows types */ /* in Windows, can use specific Windows types */
@ -561,6 +568,8 @@
#define LUA_MAXINTEGER _I64_MAX #define LUA_MAXINTEGER _I64_MAX
#define LUA_MININTEGER _I64_MIN #define LUA_MININTEGER _I64_MIN
#define LUA_MAXUNSIGNED _UI64_MAX
#else /* }{ */ #else /* }{ */
#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
@ -595,7 +604,7 @@
/* /*
@@ lua_strx2number converts an hexadecimal numeric string to a number. @@ lua_strx2number converts a hexadecimal numeral to a number.
** In C99, 'strtod' does that conversion. Otherwise, you can ** In C99, 'strtod' does that conversion. Otherwise, you can
** leave 'lua_strx2number' undefined and Lua will provide its own ** leave 'lua_strx2number' undefined and Lua will provide its own
** implementation. ** implementation.
@ -606,13 +615,21 @@
/* /*
@@ lua_number2strx converts a float to an hexadecimal numeric string. @@ lua_pointer2str converts a pointer to a readable string in a
** non-specified way.
*/
#define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p)
/*
@@ lua_number2strx converts a float to a hexadecimal numeral.
** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
** Otherwise, you can leave 'lua_number2strx' undefined and Lua will ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
** provide its own implementation. ** provide its own implementation.
*/ */
#if !defined(LUA_USE_C89) #if !defined(LUA_USE_C89)
#define lua_number2strx(L,b,sz,f,n) ((void)L, l_sprintf(b,sz,f,n)) #define lua_number2strx(L,b,sz,f,n) \
((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))
#endif #endif
@ -651,7 +668,7 @@
/* /*
@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
** Change that if you do not want to use C locales. (Code using this ** Change that if you do not want to use C locales. (Code using this
** macro must include header 'locale.h'.) ** macro must include the header 'locale.h'.)
*/ */
#if !defined(lua_getlocaledecpoint) #if !defined(lua_getlocaledecpoint)
#define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) #define lua_getlocaledecpoint() (localeconv()->decimal_point[0])
@ -692,7 +709,7 @@
** {================================================================== ** {==================================================================
** Macros that affect the API and must be stable (that is, must be the ** Macros that affect the API and must be stable (that is, must be the
** same when you compile Lua and when you compile code that links to ** same when you compile Lua and when you compile code that links to
** Lua). You probably do not want/need to change them. ** Lua).
** ===================================================================== ** =====================================================================
*/ */
@ -701,8 +718,9 @@
** CHANGE it if you need a different limit. This limit is arbitrary; ** CHANGE it if you need a different limit. This limit is arbitrary;
** its only purpose is to stop Lua from consuming unlimited stack ** its only purpose is to stop Lua from consuming unlimited stack
** space (and to reserve some numbers for pseudo-indices). ** space (and to reserve some numbers for pseudo-indices).
** (It must fit into max(size_t)/32.)
*/ */
#if LUAI_BITSINT >= 32 #if LUAI_IS32INT
#define LUAI_MAXSTACK 1000000 #define LUAI_MAXSTACK 1000000
#else #else
#define LUAI_MAXSTACK 15000 #define LUAI_MAXSTACK 15000
@ -727,27 +745,18 @@
/* /*
@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
** CHANGE it if it uses too much C-stack space. (For long double,
** 'string.format("%.99f", 1e4932)' needs ~5030 bytes, so a
** smaller buffer would force a memory allocation for each call to
** 'string.format'.)
*/ */
#if defined(LUA_FLOAT_LONGDOUBLE) #define LUAL_BUFFERSIZE ((int)(16 * sizeof(void*) * sizeof(lua_Number)))
#define LUAL_BUFFERSIZE 8192
#else
#define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
#endif
/* }================================================================== */
/* /*
@@ LUA_QL describes how error messages quote program elements. @@ LUAI_MAXALIGN defines fields that, when used in a union, ensure
** Lua does not use these macros anymore; they are here for ** maximum alignment for the other items in that union.
** compatibility only.
*/ */
#define LUA_QL(x) "'" x "'" #define LUAI_MAXALIGN lua_Number n; double u; void *s; lua_Integer i; long l
#define LUA_QS LUA_QL("%s")
/* }================================================================== */

8
lua-5.3.3/src/lualib.h → lua-5.4.0/src/lualib.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lualib.h,v 1.44 2014/02/06 17:32:33 roberto Exp $ ** $Id: lualib.h $
** Lua standard libraries ** Lua standard libraries
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -11,6 +11,9 @@
#include "lua.h" #include "lua.h"
/* version suffix for environment variable names */
#define LUA_VERSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
LUAMOD_API int (luaopen_base) (lua_State *L); LUAMOD_API int (luaopen_base) (lua_State *L);
@ -32,9 +35,6 @@ LUAMOD_API int (luaopen_string) (lua_State *L);
#define LUA_UTF8LIBNAME "utf8" #define LUA_UTF8LIBNAME "utf8"
LUAMOD_API int (luaopen_utf8) (lua_State *L); LUAMOD_API int (luaopen_utf8) (lua_State *L);
#define LUA_BITLIBNAME "bit32"
LUAMOD_API int (luaopen_bit32) (lua_State *L);
#define LUA_MATHLIBNAME "math" #define LUA_MATHLIBNAME "math"
LUAMOD_API int (luaopen_math) (lua_State *L); LUAMOD_API int (luaopen_math) (lua_State *L);

323
lua-5.4.0/src/lundump.c Normal file
View File

@ -0,0 +1,323 @@
/*
** $Id: lundump.c $
** load precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#define lundump_c
#define LUA_CORE
#include "lprefix.h"
#include <limits.h>
#include <string.h>
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstring.h"
#include "lundump.h"
#include "lzio.h"
#if !defined(luai_verifycode)
#define luai_verifycode(L,f) /* empty */
#endif
typedef struct {
lua_State *L;
ZIO *Z;
const char *name;
} LoadState;
static l_noret error (LoadState *S, const char *why) {
luaO_pushfstring(S->L, "%s: bad binary format (%s)", S->name, why);
luaD_throw(S->L, LUA_ERRSYNTAX);
}
/*
** All high-level loads go through loadVector; you can change it to
** adapt to the endianness of the input
*/
#define loadVector(S,b,n) loadBlock(S,b,(n)*sizeof((b)[0]))
static void loadBlock (LoadState *S, void *b, size_t size) {
if (luaZ_read(S->Z, b, size) != 0)
error(S, "truncated chunk");
}
#define loadVar(S,x) loadVector(S,&x,1)
static lu_byte loadByte (LoadState *S) {
int b = zgetc(S->Z);
if (b == EOZ)
error(S, "truncated chunk");
return cast_byte(b);
}
static size_t loadUnsigned (LoadState *S, size_t limit) {
size_t x = 0;
int b;
limit >>= 7;
do {
b = loadByte(S);
if (x >= limit)
error(S, "integer overflow");
x = (x << 7) | (b & 0x7f);
} while ((b & 0x80) == 0);
return x;
}
static size_t loadSize (LoadState *S) {
return loadUnsigned(S, ~(size_t)0);
}
static int loadInt (LoadState *S) {
return cast_int(loadUnsigned(S, INT_MAX));
}
static lua_Number loadNumber (LoadState *S) {
lua_Number x;
loadVar(S, x);
return x;
}
static lua_Integer loadInteger (LoadState *S) {
lua_Integer x;
loadVar(S, x);
return x;
}
/*
** Load a nullable string into prototype 'p'.
*/
static TString *loadStringN (LoadState *S, Proto *p) {
lua_State *L = S->L;
TString *ts;
size_t size = loadSize(S);
if (size == 0) /* no string? */
return NULL;
else if (--size <= LUAI_MAXSHORTLEN) { /* short string? */
char buff[LUAI_MAXSHORTLEN];
loadVector(S, buff, size); /* load string into buffer */
ts = luaS_newlstr(L, buff, size); /* create string */
}
else { /* long string */
ts = luaS_createlngstrobj(L, size); /* create string */
loadVector(S, getstr(ts), size); /* load directly in final place */
}
luaC_objbarrier(L, p, ts);
return ts;
}
/*
** Load a non-nullable string into prototype 'p'.
*/
static TString *loadString (LoadState *S, Proto *p) {
TString *st = loadStringN(S, p);
if (st == NULL)
error(S, "bad format for constant string");
return st;
}
static void loadCode (LoadState *S, Proto *f) {
int n = loadInt(S);
f->code = luaM_newvectorchecked(S->L, n, Instruction);
f->sizecode = n;
loadVector(S, f->code, n);
}
static void loadFunction(LoadState *S, Proto *f, TString *psource);
static void loadConstants (LoadState *S, Proto *f) {
int i;
int n = loadInt(S);
f->k = luaM_newvectorchecked(S->L, n, TValue);
f->sizek = n;
for (i = 0; i < n; i++)
setnilvalue(&f->k[i]);
for (i = 0; i < n; i++) {
TValue *o = &f->k[i];
int t = loadByte(S);
switch (t) {
case LUA_VNIL:
setnilvalue(o);
break;
case LUA_VFALSE:
setbfvalue(o);
break;
case LUA_VTRUE:
setbtvalue(o);
break;
case LUA_VNUMFLT:
setfltvalue(o, loadNumber(S));
break;
case LUA_VNUMINT:
setivalue(o, loadInteger(S));
break;
case LUA_VSHRSTR:
case LUA_VLNGSTR:
setsvalue2n(S->L, o, loadString(S, f));
break;
default: lua_assert(0);
}
}
}
static void loadProtos (LoadState *S, Proto *f) {
int i;
int n = loadInt(S);
f->p = luaM_newvectorchecked(S->L, n, Proto *);
f->sizep = n;
for (i = 0; i < n; i++)
f->p[i] = NULL;
for (i = 0; i < n; i++) {
f->p[i] = luaF_newproto(S->L);
luaC_objbarrier(S->L, f, f->p[i]);
loadFunction(S, f->p[i], f->source);
}
}
static void loadUpvalues (LoadState *S, Proto *f) {
int i, n;
n = loadInt(S);
f->upvalues = luaM_newvectorchecked(S->L, n, Upvaldesc);
f->sizeupvalues = n;
for (i = 0; i < n; i++) {
f->upvalues[i].name = NULL;
f->upvalues[i].instack = loadByte(S);
f->upvalues[i].idx = loadByte(S);
f->upvalues[i].kind = loadByte(S);
}
}
static void loadDebug (LoadState *S, Proto *f) {
int i, n;
n = loadInt(S);
f->lineinfo = luaM_newvectorchecked(S->L, n, ls_byte);
f->sizelineinfo = n;
loadVector(S, f->lineinfo, n);
n = loadInt(S);
f->abslineinfo = luaM_newvectorchecked(S->L, n, AbsLineInfo);
f->sizeabslineinfo = n;
for (i = 0; i < n; i++) {
f->abslineinfo[i].pc = loadInt(S);
f->abslineinfo[i].line = loadInt(S);
}
n = loadInt(S);
f->locvars = luaM_newvectorchecked(S->L, n, LocVar);
f->sizelocvars = n;
for (i = 0; i < n; i++)
f->locvars[i].varname = NULL;
for (i = 0; i < n; i++) {
f->locvars[i].varname = loadStringN(S, f);
f->locvars[i].startpc = loadInt(S);
f->locvars[i].endpc = loadInt(S);
}
n = loadInt(S);
for (i = 0; i < n; i++)
f->upvalues[i].name = loadStringN(S, f);
}
static void loadFunction (LoadState *S, Proto *f, TString *psource) {
f->source = loadStringN(S, f);
if (f->source == NULL) /* no source in dump? */
f->source = psource; /* reuse parent's source */
f->linedefined = loadInt(S);
f->lastlinedefined = loadInt(S);
f->numparams = loadByte(S);
f->is_vararg = loadByte(S);
f->maxstacksize = loadByte(S);
loadCode(S, f);
loadConstants(S, f);
loadUpvalues(S, f);
loadProtos(S, f);
loadDebug(S, f);
}
static void checkliteral (LoadState *S, const char *s, const char *msg) {
char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
size_t len = strlen(s);
loadVector(S, buff, len);
if (memcmp(s, buff, len) != 0)
error(S, msg);
}
static void fchecksize (LoadState *S, size_t size, const char *tname) {
if (loadByte(S) != size)
error(S, luaO_pushfstring(S->L, "%s size mismatch", tname));
}
#define checksize(S,t) fchecksize(S,sizeof(t),#t)
static void checkHeader (LoadState *S) {
/* skip 1st char (already read and checked) */
checkliteral(S, &LUA_SIGNATURE[1], "not a binary chunk");
if (loadByte(S) != LUAC_VERSION)
error(S, "version mismatch");
if (loadByte(S) != LUAC_FORMAT)
error(S, "format mismatch");
checkliteral(S, LUAC_DATA, "corrupted chunk");
checksize(S, Instruction);
checksize(S, lua_Integer);
checksize(S, lua_Number);
if (loadInteger(S) != LUAC_INT)
error(S, "integer format mismatch");
if (loadNumber(S) != LUAC_NUM)
error(S, "float format mismatch");
}
/*
** Load precompiled chunk.
*/
LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) {
LoadState S;
LClosure *cl;
if (*name == '@' || *name == '=')
S.name = name + 1;
else if (*name == LUA_SIGNATURE[0])
S.name = "binary string";
else
S.name = name;
S.L = L;
S.Z = Z;
checkHeader(&S);
cl = luaF_newLclosure(L, loadByte(&S));
setclLvalue2s(L, L->top, cl);
luaD_inctop(L);
cl->p = luaF_newproto(L);
luaC_objbarrier(L, cl, cl->p);
loadFunction(&S, cl->p, NULL);
lua_assert(cl->nupvalues == cl->p->sizeupvalues);
luai_verifycode(L, cl->p);
return cl;
}

8
lua-5.3.3/src/lundump.h → lua-5.4.0/src/lundump.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lundump.h,v 1.45 2015/09/08 15:41:05 roberto Exp $ ** $Id: lundump.h $
** load precompiled Lua chunks ** load precompiled Lua chunks
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -18,8 +18,12 @@
#define LUAC_INT 0x5678 #define LUAC_INT 0x5678
#define LUAC_NUM cast_num(370.5) #define LUAC_NUM cast_num(370.5)
#define MYINT(s) (s[0]-'0') /*
** Encode major-minor version in one byte, one nibble for each
*/
#define MYINT(s) (s[0]-'0') /* assume one-digit numerals */
#define LUAC_VERSION (MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR)) #define LUAC_VERSION (MYINT(LUA_VERSION_MAJOR)*16+MYINT(LUA_VERSION_MINOR))
#define LUAC_FORMAT 0 /* this is the official format */ #define LUAC_FORMAT 0 /* this is the official format */
/* load one chunk; from lundump.c */ /* load one chunk; from lundump.c */

121
lua-5.3.3/src/lutf8lib.c → lua-5.4.0/src/lutf8lib.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lutf8lib.c,v 1.15 2015/03/28 19:16:55 roberto Exp $ ** $Id: lutf8lib.c $
** Standard library for UTF-8 manipulation ** Standard library for UTF-8 manipulation
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -20,7 +20,20 @@
#include "lauxlib.h" #include "lauxlib.h"
#include "lualib.h" #include "lualib.h"
#define MAXUNICODE 0x10FFFF
#define MAXUNICODE 0x10FFFFu
#define MAXUTF 0x7FFFFFFFu
/*
** Integer type for decoded UTF-8 values; MAXUTF needs 31 bits.
*/
#if (UINT_MAX >> 30) >= 1
typedef unsigned int utfint;
#else
typedef unsigned long utfint;
#endif
#define iscont(p) ((*(p) & 0xC0) == 0x80) #define iscont(p) ((*(p) & 0xC0) == 0x80)
@ -35,53 +48,62 @@ static lua_Integer u_posrelat (lua_Integer pos, size_t len) {
/* /*
** Decode one UTF-8 sequence, returning NULL if byte sequence is invalid. ** Decode one UTF-8 sequence, returning NULL if byte sequence is
** invalid. The array 'limits' stores the minimum value for each
** sequence length, to check for overlong representations. Its first
** entry forces an error for non-ascii bytes with no continuation
** bytes (count == 0).
*/ */
static const char *utf8_decode (const char *o, int *val) { static const char *utf8_decode (const char *s, utfint *val, int strict) {
static const unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF}; static const utfint limits[] =
const unsigned char *s = (const unsigned char *)o; {~(utfint)0, 0x80, 0x800, 0x10000u, 0x200000u, 0x4000000u};
unsigned int c = s[0]; unsigned int c = (unsigned char)s[0];
unsigned int res = 0; /* final result */ utfint res = 0; /* final result */
if (c < 0x80) /* ascii? */ if (c < 0x80) /* ascii? */
res = c; res = c;
else { else {
int count = 0; /* to count number of continuation bytes */ int count = 0; /* to count number of continuation bytes */
while (c & 0x40) { /* still have continuation bytes? */ for (; c & 0x40; c <<= 1) { /* while it needs continuation bytes... */
int cc = s[++count]; /* read next byte */ unsigned int cc = (unsigned char)s[++count]; /* read next byte */
if ((cc & 0xC0) != 0x80) /* not a continuation byte? */ if ((cc & 0xC0) != 0x80) /* not a continuation byte? */
return NULL; /* invalid byte sequence */ return NULL; /* invalid byte sequence */
res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */ res = (res << 6) | (cc & 0x3F); /* add lower 6 bits from cont. byte */
c <<= 1; /* to test next bit */
} }
res |= ((c & 0x7F) << (count * 5)); /* add first byte */ res |= ((utfint)(c & 0x7F) << (count * 5)); /* add first byte */
if (count > 3 || res > MAXUNICODE || res <= limits[count]) if (count > 5 || res > MAXUTF || res < limits[count])
return NULL; /* invalid byte sequence */ return NULL; /* invalid byte sequence */
s += count; /* skip continuation bytes read */ s += count; /* skip continuation bytes read */
} }
if (strict) {
/* check for invalid code points; too large or surrogates */
if (res > MAXUNICODE || (0xD800u <= res && res <= 0xDFFFu))
return NULL;
}
if (val) *val = res; if (val) *val = res;
return (const char *)s + 1; /* +1 to include first byte */ return s + 1; /* +1 to include first byte */
} }
/* /*
** utf8len(s [, i [, j]]) --> number of characters that start in the ** utf8len(s [, i [, j [, lax]]]) --> number of characters that
** range [i,j], or nil + current position if 's' is not well formed in ** start in the range [i,j], or nil + current position if 's' is not
** that interval ** well formed in that interval
*/ */
static int utflen (lua_State *L) { static int utflen (lua_State *L) {
int n = 0; lua_Integer n = 0; /* counter for the number of characters */
size_t len; size_t len; /* string length in bytes */
const char *s = luaL_checklstring(L, 1, &len); const char *s = luaL_checklstring(L, 1, &len);
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len); lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len); lua_Integer posj = u_posrelat(luaL_optinteger(L, 3, -1), len);
int lax = lua_toboolean(L, 4);
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2, luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 2,
"initial position out of string"); "initial position out of bounds");
luaL_argcheck(L, --posj < (lua_Integer)len, 3, luaL_argcheck(L, --posj < (lua_Integer)len, 3,
"final position out of string"); "final position out of bounds");
while (posi <= posj) { while (posi <= posj) {
const char *s1 = utf8_decode(s + posi, NULL); const char *s1 = utf8_decode(s + posi, NULL, !lax);
if (s1 == NULL) { /* conversion error? */ if (s1 == NULL) { /* conversion error? */
lua_pushnil(L); /* return nil ... */ luaL_pushfail(L); /* return fail ... */
lua_pushinteger(L, posi + 1); /* ... and current position */ lua_pushinteger(L, posi + 1); /* ... and current position */
return 2; return 2;
} }
@ -94,28 +116,29 @@ static int utflen (lua_State *L) {
/* /*
** codepoint(s, [i, [j]]) -> returns codepoints for all characters ** codepoint(s, [i, [j [, lax]]]) -> returns codepoints for all
** that start in the range [i,j] ** characters that start in the range [i,j]
*/ */
static int codepoint (lua_State *L) { static int codepoint (lua_State *L) {
size_t len; size_t len;
const char *s = luaL_checklstring(L, 1, &len); const char *s = luaL_checklstring(L, 1, &len);
lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len); lua_Integer posi = u_posrelat(luaL_optinteger(L, 2, 1), len);
lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len); lua_Integer pose = u_posrelat(luaL_optinteger(L, 3, posi), len);
int lax = lua_toboolean(L, 4);
int n; int n;
const char *se; const char *se;
luaL_argcheck(L, posi >= 1, 2, "out of range"); luaL_argcheck(L, posi >= 1, 2, "out of bounds");
luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of range"); luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of bounds");
if (posi > pose) return 0; /* empty interval; return no values */ if (posi > pose) return 0; /* empty interval; return no values */
if (pose - posi >= INT_MAX) /* (lua_Integer -> int) overflow? */ if (pose - posi >= INT_MAX) /* (lua_Integer -> int) overflow? */
return luaL_error(L, "string slice too long"); return luaL_error(L, "string slice too long");
n = (int)(pose - posi) + 1; n = (int)(pose - posi) + 1; /* upper bound for number of returns */
luaL_checkstack(L, n, "string slice too long"); luaL_checkstack(L, n, "string slice too long");
n = 0; n = 0; /* count the number of returns */
se = s + pose; se = s + pose; /* string end */
for (s += posi - 1; s < se;) { for (s += posi - 1; s < se;) {
int code; utfint code;
s = utf8_decode(s, &code); s = utf8_decode(s, &code, !lax);
if (s == NULL) if (s == NULL)
return luaL_error(L, "invalid UTF-8 code"); return luaL_error(L, "invalid UTF-8 code");
lua_pushinteger(L, code); lua_pushinteger(L, code);
@ -126,8 +149,8 @@ static int codepoint (lua_State *L) {
static void pushutfchar (lua_State *L, int arg) { static void pushutfchar (lua_State *L, int arg) {
lua_Integer code = luaL_checkinteger(L, arg); lua_Unsigned code = (lua_Unsigned)luaL_checkinteger(L, arg);
luaL_argcheck(L, 0 <= code && code <= MAXUNICODE, arg, "value out of range"); luaL_argcheck(L, code <= MAXUTF, arg, "value out of range");
lua_pushfstring(L, "%U", (long)code); lua_pushfstring(L, "%U", (long)code);
} }
@ -164,14 +187,14 @@ static int byteoffset (lua_State *L) {
lua_Integer posi = (n >= 0) ? 1 : len + 1; lua_Integer posi = (n >= 0) ? 1 : len + 1;
posi = u_posrelat(luaL_optinteger(L, 3, posi), len); posi = u_posrelat(luaL_optinteger(L, 3, posi), len);
luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3, luaL_argcheck(L, 1 <= posi && --posi <= (lua_Integer)len, 3,
"position out of range"); "position out of bounds");
if (n == 0) { if (n == 0) {
/* find beginning of current byte sequence */ /* find beginning of current byte sequence */
while (posi > 0 && iscont(s + posi)) posi--; while (posi > 0 && iscont(s + posi)) posi--;
} }
else { else {
if (iscont(s + posi)) if (iscont(s + posi))
luaL_error(L, "initial position is a continuation byte"); return luaL_error(L, "initial position is a continuation byte");
if (n < 0) { if (n < 0) {
while (n < 0 && posi > 0) { /* move back */ while (n < 0 && posi > 0) { /* move back */
do { /* find beginning of previous character */ do { /* find beginning of previous character */
@ -193,12 +216,12 @@ static int byteoffset (lua_State *L) {
if (n == 0) /* did it find given character? */ if (n == 0) /* did it find given character? */
lua_pushinteger(L, posi + 1); lua_pushinteger(L, posi + 1);
else /* no such character */ else /* no such character */
lua_pushnil(L); luaL_pushfail(L);
return 1; return 1;
} }
static int iter_aux (lua_State *L) { static int iter_aux (lua_State *L, int strict) {
size_t len; size_t len;
const char *s = luaL_checklstring(L, 1, &len); const char *s = luaL_checklstring(L, 1, &len);
lua_Integer n = lua_tointeger(L, 2) - 1; lua_Integer n = lua_tointeger(L, 2) - 1;
@ -211,9 +234,9 @@ static int iter_aux (lua_State *L) {
if (n >= (lua_Integer)len) if (n >= (lua_Integer)len)
return 0; /* no more codepoints */ return 0; /* no more codepoints */
else { else {
int code; utfint code;
const char *next = utf8_decode(s + n, &code); const char *next = utf8_decode(s + n, &code, strict);
if (next == NULL || iscont(next)) if (next == NULL)
return luaL_error(L, "invalid UTF-8 code"); return luaL_error(L, "invalid UTF-8 code");
lua_pushinteger(L, n + 1); lua_pushinteger(L, n + 1);
lua_pushinteger(L, code); lua_pushinteger(L, code);
@ -222,9 +245,19 @@ static int iter_aux (lua_State *L) {
} }
static int iter_auxstrict (lua_State *L) {
return iter_aux(L, 1);
}
static int iter_auxlax (lua_State *L) {
return iter_aux(L, 0);
}
static int iter_codes (lua_State *L) { static int iter_codes (lua_State *L) {
int lax = lua_toboolean(L, 2);
luaL_checkstring(L, 1); luaL_checkstring(L, 1);
lua_pushcfunction(L, iter_aux); lua_pushcfunction(L, lax ? iter_auxlax : iter_auxstrict);
lua_pushvalue(L, 1); lua_pushvalue(L, 1);
lua_pushinteger(L, 0); lua_pushinteger(L, 0);
return 3; return 3;
@ -232,7 +265,7 @@ static int iter_codes (lua_State *L) {
/* pattern to match a single UTF-8 character */ /* pattern to match a single UTF-8 character */
#define UTF8PATT "[\0-\x7F\xC2-\xF4][\x80-\xBF]*" #define UTF8PATT "[\0-\x7F\xC2-\xFD][\x80-\xBF]*"
static const luaL_Reg funcs[] = { static const luaL_Reg funcs[] = {

1812
lua-5.4.0/src/lvm.c Normal file
View File

File diff suppressed because it is too large Load Diff

134
lua-5.4.0/src/lvm.h Normal file
View File

@ -0,0 +1,134 @@
/*
** $Id: lvm.h $
** Lua virtual machine
** See Copyright Notice in lua.h
*/
#ifndef lvm_h
#define lvm_h
#include "ldo.h"
#include "lobject.h"
#include "ltm.h"
#if !defined(LUA_NOCVTN2S)
#define cvt2str(o) ttisnumber(o)
#else
#define cvt2str(o) 0 /* no conversion from numbers to strings */
#endif
#if !defined(LUA_NOCVTS2N)
#define cvt2num(o) ttisstring(o)
#else
#define cvt2num(o) 0 /* no conversion from strings to numbers */
#endif
/*
** You can define LUA_FLOORN2I if you want to convert floats to integers
** by flooring them (instead of raising an error if they are not
** integral values)
*/
#if !defined(LUA_FLOORN2I)
#define LUA_FLOORN2I F2Ieq
#endif
/*
** Rounding modes for float->integer coercion
*/
typedef enum {
F2Ieq, /* no rounding; accepts only integral values */
F2Ifloor, /* takes the floor of the number */
F2Iceil /* takes the ceil of the number */
} F2Imod;
/* convert an object to a float (including string coercion) */
#define tonumber(o,n) \
(ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n))
/* convert an object to a float (without string coercion) */
#define tonumberns(o,n) \
(ttisfloat(o) ? ((n) = fltvalue(o), 1) : \
(ttisinteger(o) ? ((n) = cast_num(ivalue(o)), 1) : 0))
/* convert an object to an integer (including string coercion) */
#define tointeger(o,i) \
(ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger(o,i,LUA_FLOORN2I))
/* convert an object to an integer (without string coercion) */
#define tointegerns(o,i) \
(ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointegerns(o,i,LUA_FLOORN2I))
#define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2))
#define luaV_rawequalobj(t1,t2) luaV_equalobj(NULL,t1,t2)
/*
** fast track for 'gettable': if 't' is a table and 't[k]' is present,
** return 1 with 'slot' pointing to 't[k]' (position of final result).
** Otherwise, return 0 (meaning it will have to check metamethod)
** with 'slot' pointing to an empty 't[k]' (if 't' is a table) or NULL
** (otherwise). 'f' is the raw get function to use.
*/
#define luaV_fastget(L,t,k,slot,f) \
(!ttistable(t) \
? (slot = NULL, 0) /* not a table; 'slot' is NULL and result is 0 */ \
: (slot = f(hvalue(t), k), /* else, do raw access */ \
!isempty(slot))) /* result not empty? */
/*
** Special case of 'luaV_fastget' for integers, inlining the fast case
** of 'luaH_getint'.
*/
#define luaV_fastgeti(L,t,k,slot) \
(!ttistable(t) \
? (slot = NULL, 0) /* not a table; 'slot' is NULL and result is 0 */ \
: (slot = (l_castS2U(k) - 1u < hvalue(t)->alimit) \
? &hvalue(t)->array[k - 1] : luaH_getint(hvalue(t), k), \
!isempty(slot))) /* result not empty? */
/*
** Finish a fast set operation (when fast get succeeds). In that case,
** 'slot' points to the place to put the value.
*/
#define luaV_finishfastset(L,t,slot,v) \
{ setobj2t(L, cast(TValue *,slot), v); \
luaC_barrierback(L, gcvalue(t), v); }
LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, F2Imod mode);
LUAI_FUNC int luaV_tointegerns (const TValue *obj, lua_Integer *p,
F2Imod mode);
LUAI_FUNC int luaV_flttointeger (lua_Number n, lua_Integer *p, F2Imod mode);
LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key,
StkId val, const TValue *slot);
LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
TValue *val, const TValue *slot);
LUAI_FUNC void luaV_finishOp (lua_State *L);
LUAI_FUNC void luaV_execute (lua_State *L, CallInfo *ci);
LUAI_FUNC void luaV_concat (lua_State *L, int total);
LUAI_FUNC lua_Integer luaV_idiv (lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y);
LUAI_FUNC lua_Number luaV_modf (lua_State *L, lua_Number x, lua_Number y);
LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y);
LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb);
#endif

2
lua-5.3.3/src/lzio.c → lua-5.4.0/src/lzio.c
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lzio.c,v 1.37 2015/09/08 15:41:05 roberto Exp $ ** $Id: lzio.c $
** Buffered streams ** Buffered streams
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */

2
lua-5.3.3/src/lzio.h → lua-5.4.0/src/lzio.h
View File

@ -1,5 +1,5 @@
/* /*
** $Id: lzio.h,v 1.31 2015/09/08 15:41:05 roberto Exp $ ** $Id: lzio.h $
** Buffered streams ** Buffered streams
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */

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