Lua/lua-5.4.6-tests/literals.lua

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-- $Id: testes/literals.lua $
-- See Copyright Notice in file all.lua
print('testing scanner')
local debug = require "debug"
local function dostring (x) return assert(load(x), "")() end
dostring("x \v\f = \t\r 'a\0a' \v\f\f")
assert(x == 'a\0a' and string.len(x) == 3)
_G.x = nil
-- escape sequences
assert('\n\"\'\\' == [[
"'\]])
assert(string.find("\a\b\f\n\r\t\v", "^%c%c%c%c%c%c%c$"))
-- assume ASCII just for tests:
assert("\09912" == 'c12')
assert("\99ab" == 'cab')
assert("\099" == '\99')
assert("\099\n" == 'c\10')
assert('\0\0\0alo' == '\0' .. '\0\0' .. 'alo')
assert(010 .. 020 .. -030 == "1020-30")
-- hexadecimal escapes
assert("\x00\x05\x10\x1f\x3C\xfF\xe8" == "\0\5\16\31\60\255\232")
local function lexstring (x, y, n)
local f = assert(load('return ' .. x ..
', require"debug".getinfo(1).currentline', ''))
local s, l = f()
assert(s == y and l == n)
end
lexstring("'abc\\z \n efg'", "abcefg", 2)
lexstring("'abc\\z \n\n\n'", "abc", 4)
lexstring("'\\z \n\t\f\v\n'", "", 3)
lexstring("[[\nalo\nalo\n\n]]", "alo\nalo\n\n", 5)
lexstring("[[\nalo\ralo\n\n]]", "alo\nalo\n\n", 5)
lexstring("[[\nalo\ralo\r\n]]", "alo\nalo\n", 4)
lexstring("[[\ralo\n\ralo\r\n]]", "alo\nalo\n", 4)
lexstring("[[alo]\n]alo]]", "alo]\n]alo", 2)
assert("abc\z
def\z
ghi\z
" == 'abcdefghi')
-- UTF-8 sequences
assert("\u{0}\u{00000000}\x00\0" == string.char(0, 0, 0, 0))
-- limits for 1-byte sequences
assert("\u{0}\u{7F}" == "\x00\x7F")
-- limits for 2-byte sequences
assert("\u{80}\u{7FF}" == "\xC2\x80\xDF\xBF")
-- limits for 3-byte sequences
assert("\u{800}\u{FFFF}" == "\xE0\xA0\x80\xEF\xBF\xBF")
-- limits for 4-byte sequences
assert("\u{10000}\u{1FFFFF}" == "\xF0\x90\x80\x80\xF7\xBF\xBF\xBF")
-- limits for 5-byte sequences
assert("\u{200000}\u{3FFFFFF}" == "\xF8\x88\x80\x80\x80\xFB\xBF\xBF\xBF\xBF")
-- limits for 6-byte sequences
assert("\u{4000000}\u{7FFFFFFF}" ==
"\xFC\x84\x80\x80\x80\x80\xFD\xBF\xBF\xBF\xBF\xBF")
-- Error in escape sequences
local function lexerror (s, err)
local st, msg = load('return ' .. s, '')
if err ~= '<eof>' then err = err .. "'" end
assert(not st and string.find(msg, "near .-" .. err))
end
lexerror([["abc\x"]], [[\x"]])
lexerror([["abc\x]], [[\x]])
lexerror([["\x]], [[\x]])
lexerror([["\x5"]], [[\x5"]])
lexerror([["\x5]], [[\x5]])
lexerror([["\xr"]], [[\xr]])
lexerror([["\xr]], [[\xr]])
lexerror([["\x.]], [[\x.]])
lexerror([["\x8%"]], [[\x8%%]])
lexerror([["\xAG]], [[\xAG]])
lexerror([["\g"]], [[\g]])
lexerror([["\g]], [[\g]])
lexerror([["\."]], [[\%.]])
lexerror([["\999"]], [[\999"]])
lexerror([["xyz\300"]], [[\300"]])
lexerror([[" \256"]], [[\256"]])
-- errors in UTF-8 sequences
lexerror([["abc\u{100000000}"]], [[abc\u{100000000]]) -- too large
lexerror([["abc\u11r"]], [[abc\u1]]) -- missing '{'
lexerror([["abc\u"]], [[abc\u"]]) -- missing '{'
lexerror([["abc\u{11r"]], [[abc\u{11r]]) -- missing '}'
lexerror([["abc\u{11"]], [[abc\u{11"]]) -- missing '}'
lexerror([["abc\u{11]], [[abc\u{11]]) -- missing '}'
lexerror([["abc\u{r"]], [[abc\u{r]]) -- no digits
-- unfinished strings
lexerror("[=[alo]]", "<eof>")
lexerror("[=[alo]=", "<eof>")
lexerror("[=[alo]", "<eof>")
lexerror("'alo", "<eof>")
lexerror("'alo \\z \n\n", "<eof>")
lexerror("'alo \\z", "<eof>")
lexerror([['alo \98]], "<eof>")
-- valid characters in variable names
for i = 0, 255 do
local s = string.char(i)
assert(not string.find(s, "[a-zA-Z_]") == not load(s .. "=1", ""))
assert(not string.find(s, "[a-zA-Z_0-9]") ==
not load("a" .. s .. "1 = 1", ""))
end
-- long variable names
local var1 = string.rep('a', 15000) .. '1'
local var2 = string.rep('a', 15000) .. '2'
local prog = string.format([[
%s = 5
%s = %s + 1
return function () return %s - %s end
]], var1, var2, var1, var1, var2)
local f = dostring(prog)
assert(_G[var1] == 5 and _G[var2] == 6 and f() == -1)
_G[var1], _G[var2] = nil
print('+')
-- escapes --
assert("\n\t" == [[
]])
assert([[
$debug]] == "\n $debug")
assert([[ [ ]] ~= [[ ] ]])
-- long strings --
local b = "001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789"
assert(string.len(b) == 960)
prog = [=[
print('+')
local a1 = [["this is a 'string' with several 'quotes'"]]
local a2 = "'quotes'"
assert(string.find(a1, a2) == 34)
print('+')
a1 = [==[temp = [[an arbitrary value]]; ]==]
assert(load(a1))()
assert(temp == 'an arbitrary value')
_G.temp = nil
-- long strings --
local b = "001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789"
assert(string.len(b) == 960)
print('+')
local a = [[00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
00123456789012345678901234567890123456789123456789012345678901234567890123456789
]]
assert(string.len(a) == 1863)
assert(string.sub(a, 1, 40) == string.sub(b, 1, 40))
x = 1
]=]
print('+')
_G.x = nil
dostring(prog)
assert(x)
_G.x = nil
do -- reuse of long strings
-- get the address of a string
local function getadd (s) return string.format("%p", s) end
local s1 <const> = "01234567890123456789012345678901234567890123456789"
local s2 <const> = "01234567890123456789012345678901234567890123456789"
local s3 = "01234567890123456789012345678901234567890123456789"
local function foo() return s1 end
local function foo1() return s3 end
local function foo2()
return "01234567890123456789012345678901234567890123456789"
end
local a1 = getadd(s1)
assert(a1 == getadd(s2))
assert(a1 == getadd(foo()))
assert(a1 == getadd(foo1()))
assert(a1 == getadd(foo2()))
local sd = "0123456789" .. "0123456789012345678901234567890123456789"
assert(sd == s1 and getadd(sd) ~= a1)
end
-- testing line ends
prog = [[
local a = 1 -- a comment
local b = 2
x = [=[
hi
]=]
y = "\
hello\r\n\
"
return require"debug".getinfo(1).currentline
]]
for _, n in pairs{"\n", "\r", "\n\r", "\r\n"} do
local prog, nn = string.gsub(prog, "\n", n)
assert(dostring(prog) == nn)
assert(_G.x == "hi\n" and _G.y == "\nhello\r\n\n")
end
_G.x, _G.y = nil
-- testing comments and strings with long brackets
local a = [==[]=]==]
assert(a == "]=")
a = [==[[===[[=[]]=][====[]]===]===]==]
assert(a == "[===[[=[]]=][====[]]===]===")
a = [====[[===[[=[]]=][====[]]===]===]====]
assert(a == "[===[[=[]]=][====[]]===]===")
a = [=[]]]]]]]]]=]
assert(a == "]]]]]]]]")
--[===[
x y z [==[ blu foo
]==
]
]=]==]
error error]=]===]
-- generate all strings of four of these chars
local x = {"=", "[", "]", "\n"}
local len = 4
local function gen (c, n)
if n==0 then coroutine.yield(c)
else
for _, a in pairs(x) do
gen(c..a, n-1)
end
end
end
for s in coroutine.wrap(function () gen("", len) end) do
assert(s == load("return [====[\n"..s.."]====]", "")())
end
-- testing decimal point locale
if os.setlocale("pt_BR") or os.setlocale("ptb") then
assert(tonumber("3,4") == 3.4 and tonumber"3.4" == 3.4)
assert(tonumber(" -.4 ") == -0.4)
assert(tonumber(" +0x.41 ") == 0X0.41)
assert(not load("a = (3,4)"))
assert(assert(load("return 3.4"))() == 3.4)
assert(assert(load("return .4,3"))() == .4)
assert(assert(load("return 4."))() == 4.)
assert(assert(load("return 4.+.5"))() == 4.5)
assert(" 0x.1 " + " 0x,1" + "-0X.1\t" == 0x0.1)
assert(not tonumber"inf" and not tonumber"NAN")
assert(assert(load(string.format("return %q", 4.51)))() == 4.51)
local a,b = load("return 4.5.")
assert(string.find(b, "'4%.5%.'"))
assert(os.setlocale("C"))
else
(Message or print)(
'\n >>> pt_BR locale not available: skipping decimal point tests <<<\n')
end
-- testing %q x line ends
local s = "a string with \r and \n and \r\n and \n\r"
local c = string.format("return %q", s)
assert(assert(load(c))() == s)
-- testing errors
assert(not load"a = 'non-ending string")
assert(not load"a = 'non-ending string\n'")
assert(not load"a = '\\345'")
assert(not load"a = [=x]")
local function malformednum (n, exp)
local s, msg = load("return " .. n)
assert(not s and string.find(msg, exp))
end
malformednum("0xe-", "near <eof>")
malformednum("0xep-p", "malformed number")
malformednum("1print()", "malformed number")
print('OK')