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llvm-project/lldb/unittests/Expression/GoParserTest.cpp
Kate Stone b9c1b51e45 *** This commit represents a complete reformatting of the LLDB source code 
*** to conform to clang-format’s LLVM style.  This kind of mass change has
*** two obvious implications:

Firstly, merging this particular commit into a downstream fork may be a huge
effort.  Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit.  The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):

    find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
    find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;

The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.

Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit.  There are alternatives available that will attempt
to look through this change and find the appropriate prior commit.  YMMV.

llvm-svn: 280751
2016-09-06 20:57:50 +00:00

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//===-- GoParserTest.cpp ------------------------------------------*- C++
//-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#if defined(_MSC_VER) && (_HAS_EXCEPTIONS == 0)
// Workaround for MSVC standard library bug, which fails to include <thread>
// when
// exceptions are disabled.
#include <eh.h>
#endif
#include <sstream>
#include "gtest/gtest.h"
#include "Plugins/ExpressionParser/Go/GoParser.h"
#include "lldb/Core/Error.h"
using namespace lldb_private;
namespace {
struct ASTPrinter {
ASTPrinter(GoASTNode *n) { (*this)(n); }
void operator()(GoASTNode *n) {
if (n == nullptr) {
m_stream << "nil ";
return;
}
m_stream << "(" << n->GetKindName() << " ";
n->WalkChildren(*this);
if (auto *nn = llvm::dyn_cast<GoASTAssignStmt>(n))
m_stream << nn->GetDefine() << " ";
if (auto *nn = llvm::dyn_cast<GoASTBasicLit>(n))
m_stream << nn->GetValue().m_value.str() << " ";
if (auto *nn = llvm::dyn_cast<GoASTBinaryExpr>(n))
m_stream << GoLexer::LookupToken(nn->GetOp()).str() << " ";
if (auto *nn = llvm::dyn_cast<GoASTIdent>(n))
m_stream << nn->GetName().m_value.str() << " ";
if (auto *nn = llvm::dyn_cast<GoASTBranchStmt>(n))
m_stream << GoLexer::LookupToken(nn->GetTok()).str() << " ";
if (auto *nn = llvm::dyn_cast<GoASTCallExpr>(n))
m_stream << (nn->GetEllipsis() ? "..." : "") << " ";
if (auto *nn = llvm::dyn_cast<GoASTChanType>(n))
m_stream << nn->GetDir() << " ";
if (auto *nn = llvm::dyn_cast<GoASTGenDecl>(n))
m_stream << GoLexer::LookupToken(nn->GetTok()).str() << " ";
if (auto *nn = llvm::dyn_cast<GoASTIncDecStmt>(n))
m_stream << GoLexer::LookupToken(nn->GetTok()).str() << " ";
if (auto *nn = llvm::dyn_cast<GoASTRangeStmt>(n))
m_stream << nn->GetDefine() << " ";
if (auto *nn = llvm::dyn_cast<GoASTSliceExpr>(n))
m_stream << nn->GetSlice3() << " ";
if (auto *nn = llvm::dyn_cast<GoASTUnaryExpr>(n))
m_stream << GoLexer::LookupToken(nn->GetOp()).str() << " ";
m_stream << ") ";
}
const std::string str() const { return m_stream.str(); }
std::stringstream m_stream;
};
testing::AssertionResult CheckStatement(const char *_s, const char *c_expr,
const char *sexpr, const char *code) {
GoParser parser(code);
std::unique_ptr<GoASTStmt> stmt(parser.Statement());
if (parser.Failed() || !stmt) {
Error err;
parser.GetError(err);
return testing::AssertionFailure() << "Error parsing " << c_expr << "\n\t"
<< err.AsCString();
}
std::string actual_sexpr = ASTPrinter(stmt.get()).str();
if (actual_sexpr == sexpr)
return testing::AssertionSuccess();
return testing::AssertionFailure() << "Parsing: " << c_expr
<< "\nExpected: " << sexpr
<< "\nGot: " << actual_sexpr;
}
} // namespace
#define EXPECT_PARSE(s, c) EXPECT_PRED_FORMAT2(CheckStatement, s, c)
TEST(GoParserTest, ParseBasicLiterals) {
EXPECT_PARSE("(ExprStmt (BasicLit 0 ) ) ", "0");
EXPECT_PARSE("(ExprStmt (BasicLit 42 ) ) ", "42");
EXPECT_PARSE("(ExprStmt (BasicLit 0600 ) ) ", "0600");
EXPECT_PARSE("(ExprStmt (BasicLit 0xBadFace ) ) ", "0xBadFace");
EXPECT_PARSE(
"(ExprStmt (BasicLit 170141183460469231731687303715884105727 ) ) ",
"170141183460469231731687303715884105727");
EXPECT_PARSE("(ExprStmt (BasicLit 0. ) ) ", "0.");
EXPECT_PARSE("(ExprStmt (BasicLit 72.40 ) ) ", "72.40");
EXPECT_PARSE("(ExprStmt (BasicLit 072.40 ) ) ", "072.40");
EXPECT_PARSE("(ExprStmt (BasicLit 2.71828 ) ) ", "2.71828");
EXPECT_PARSE("(ExprStmt (BasicLit 1.e+0 ) ) ", "1.e+0");
EXPECT_PARSE("(ExprStmt (BasicLit 6.67428e-11 ) ) ", "6.67428e-11");
EXPECT_PARSE("(ExprStmt (BasicLit 1E6 ) ) ", "1E6");
EXPECT_PARSE("(ExprStmt (BasicLit .12345E+6 ) ) ", ".12345E+6");
EXPECT_PARSE("(ExprStmt (BasicLit 0i ) ) ", "0i");
EXPECT_PARSE("(ExprStmt (BasicLit 011i ) ) ", "011i");
EXPECT_PARSE("(ExprStmt (BasicLit 0.i ) ) ", "0.i");
EXPECT_PARSE("(ExprStmt (BasicLit 2.71828i ) ) ", "2.71828i");
EXPECT_PARSE("(ExprStmt (BasicLit 6.67428e-11i ) ) ", "6.67428e-11i");
EXPECT_PARSE("(ExprStmt (BasicLit 1E6i ) ) ", "1E6i");
EXPECT_PARSE("(ExprStmt (BasicLit .12345E+6i ) ) ", ".12345E+6i");
EXPECT_PARSE("(ExprStmt (BasicLit 'a' ) ) ", "'a'");
EXPECT_PARSE("(ExprStmt (BasicLit '本' ) ) ", "'本'");
EXPECT_PARSE("(ExprStmt (BasicLit \"abc\" ) ) ", "\"abc\"");
EXPECT_PARSE("(ExprStmt (BasicLit `abc` ) ) ", "`abc`");
EXPECT_PARSE("(ExprStmt (BasicLit `ab\nc` ) ) ", "`ab\nc`");
}
TEST(GoParserTest, ParseOperand) {
EXPECT_PARSE("(ExprStmt (Ident a ) ) ", "a");
EXPECT_PARSE("(ExprStmt (Ident _x9 ) ) ", "_x9");
EXPECT_PARSE("(ExprStmt (Ident ThisVariableIsExported ) ) ",
"ThisVariableIsExported");
EXPECT_PARSE("(ExprStmt (Ident αβ ) ) ", "αβ");
EXPECT_PARSE("(ExprStmt (SelectorExpr (Ident math ) (Ident Sin ) ) ) ",
"math.Sin");
}
TEST(GoParserTest, ParseCompositeLiterals) {
EXPECT_PARSE("(ExprStmt (CompositeLit (Ident Point3D ) ) ) ", "Point3D{}");
EXPECT_PARSE("(ExprStmt (CompositeLit (Ident Line ) (Ident origin ) "
"(CompositeLit (Ident Point3D ) (KeyValueExpr "
"(Ident y ) (UnaryExpr (BasicLit 4 ) - ) ) (KeyValueExpr (Ident "
"z ) (BasicLit 12.3 ) ) ) ) ) ",
"Line{origin, Point3D{y: -4, z: 12.3}}");
EXPECT_PARSE("(ExprStmt (CompositeLit (ArrayType (BasicLit 10 ) (Ident "
"string ) ) ) ) ",
"[10]string{}");
EXPECT_PARSE("(ExprStmt (CompositeLit (ArrayType (BasicLit 6 ) (Ident int ) "
") (BasicLit 1 ) (BasicLit 2 ) "
"(BasicLit 3 ) (BasicLit 5 ) ) ) ",
"[6]int {1, 2, 3, 5}");
EXPECT_PARSE("(ExprStmt (CompositeLit (ArrayType nil (Ident int ) ) "
"(BasicLit 2 ) (BasicLit 3 ) (BasicLit 5 ) "
"(BasicLit 7 ) (BasicLit 9 ) (BasicLit 2147483647 ) ) ) ",
"[]int{2, 3, 5, 7, 9, 2147483647}");
EXPECT_PARSE("(ExprStmt (CompositeLit (ArrayType (BasicLit 128 ) (Ident bool "
") ) (KeyValueExpr (BasicLit 'a' ) "
"(Ident true ) ) (KeyValueExpr (BasicLit 'e' ) (Ident true ) ) "
"(KeyValueExpr (BasicLit 'i' ) (Ident "
"true ) ) (KeyValueExpr (BasicLit 'o' ) (Ident true ) ) "
"(KeyValueExpr (BasicLit 'u' ) (Ident true ) ) "
"(KeyValueExpr (BasicLit 'y' ) (Ident true ) ) ) ) ",
"[128]bool{'a': true, 'e': true, 'i': true, 'o': true, 'u': "
"true, 'y': true}");
EXPECT_PARSE(
"(ExprStmt (CompositeLit (ArrayType (BasicLit 10 ) (Ident float32 ) ) "
"(UnaryExpr (BasicLit 1 ) - ) "
"(KeyValueExpr (BasicLit 4 ) (UnaryExpr (BasicLit 0.1 ) - ) ) (UnaryExpr "
"(BasicLit 0.1 ) - ) "
"(KeyValueExpr (BasicLit 9 ) (UnaryExpr (BasicLit 1 ) - ) ) ) ) ",
"[10]float32{-1, 4: -0.1, -0.1, 9: -1}");
}
TEST(GoParserTest, ParseEllipsisArray) {
EXPECT_PARSE("(ExprStmt (CompositeLit (ArrayType (Ellipsis nil ) (Ident "
"string ) ) (BasicLit `Sat` ) (BasicLit `Sun` ) ) ) ",
"[...]string {`Sat`, `Sun`}");
EXPECT_PARSE("(ExprStmt (CompositeLit (ArrayType (Ellipsis nil ) (Ident "
"Point ) ) (CompositeLit nil (BasicLit 1.5 "
") (UnaryExpr (BasicLit 3.5 ) - ) ) (CompositeLit nil (BasicLit "
"0 ) (BasicLit 0 ) ) ) ) ",
"[...]Point{{1.5, -3.5}, {0, 0}}");
}
TEST(GoParserTest, ParseMap) {
EXPECT_PARSE("(ExprStmt (CompositeLit (MapType (Ident string ) (Ident "
"float32 ) ) (KeyValueExpr (BasicLit `C0` ) "
"(BasicLit 16.35 ) ) (KeyValueExpr (BasicLit `D0` ) (BasicLit "
"18.35 ) ) ) ) ",
"map[string]float32{`C0`: 16.35, `D0`: 18.35, }");
}
TEST(GoParserTest, UnaryExpr) {
EXPECT_PARSE("(ExprStmt (UnaryExpr (Ident x ) + ) ) ", "+x");
EXPECT_PARSE("(ExprStmt (UnaryExpr (Ident x ) - ) ) ", "-x");
EXPECT_PARSE("(ExprStmt (UnaryExpr (Ident x ) ! ) ) ", "!x");
EXPECT_PARSE("(ExprStmt (UnaryExpr (Ident x ) ^ ) ) ", "^x");
EXPECT_PARSE("(ExprStmt (UnaryExpr (Ident x ) & ) ) ", "&x");
EXPECT_PARSE("(ExprStmt (UnaryExpr (Ident x ) <- ) ) ", "<-x");
EXPECT_PARSE("(ExprStmt (StarExpr (Ident x ) ) ) ", "*x");
}
TEST(GoParserTest, BinaryExpr) {
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) || ) ) ", "a || b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) && ) ) ", "a && b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) == ) ) ", "a == b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) != ) ) ", "a != b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) < ) ) ", "a < b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) <= ) ) ", "a <= b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) > ) ) ", "a > b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) >= ) ) ", "a >= b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) + ) ) ", "a + b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) - ) ) ", "a - b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) | ) ) ", "a | b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) ^ ) ) ", "a ^ b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) * ) ) ", "a * b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) / ) ) ", "a / b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) % ) ) ", "a % b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) << ) ) ", "a << b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) >> ) ) ", "a >> b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) & ) ) ", "a & b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (Ident b ) &^ ) ) ", "a &^ b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (BasicLit 23 ) (BinaryExpr (BasicLit 3 ) "
"(IndexExpr (Ident x ) (Ident i ) ) * ) + ) ) ",
"23 + 3*x[i]");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident a ) (UnaryExpr (UnaryExpr (Ident "
"a ) + ) + ) + ) ) ",
"a + + + a");
EXPECT_PARSE(
"(ExprStmt (BinaryExpr (UnaryExpr (Ident a ) ^ ) (Ident b ) >> ) ) ",
"^a >> b");
EXPECT_PARSE("(ExprStmt (BinaryExpr (CallExpr (Ident f ) ) (CallExpr (Ident "
"g ) ) || ) ) ",
"f() || g()");
EXPECT_PARSE(
"(ExprStmt (BinaryExpr (BinaryExpr (Ident x ) (BinaryExpr (Ident y ) "
"(BasicLit 1 ) + ) == ) "
"(BinaryExpr (UnaryExpr (Ident chanPtr ) <- ) (BasicLit 0 ) > ) && ) ) ",
"x == y+1 && <-chanPtr > 0");
}
TEST(GoParserTest, PrimaryExpr) {
EXPECT_PARSE(
"(ExprStmt (BinaryExpr (Ident x ) (CallExpr (Ident f ) ) <= ) ) ",
"x <= f()");
EXPECT_PARSE("(ExprStmt (BinaryExpr (Ident s ) (BasicLit `.txt` ) + ) ) ",
"(s + `.txt`)");
EXPECT_PARSE(
"(ExprStmt (CallExpr (Ident f ) (BasicLit 3.1415 ) (Ident true ) ) ) ",
"f(3.1415, true)");
EXPECT_PARSE(
"(ExprStmt (CallExpr (Ident f ) (BasicLit 3.1415 ) (Ident a ) ... ) ) ",
"f(3.1415, a...)");
EXPECT_PARSE("(ExprStmt (IndexExpr (Ident m ) (BasicLit '1' ) ) ) ",
"m['1']");
EXPECT_PARSE("(ExprStmt (SliceExpr (Ident s ) (Ident i ) (BinaryExpr (Ident "
"j ) (BasicLit 1 ) + ) nil 0 ) ) ",
"s[i : j + 1]");
EXPECT_PARSE("(ExprStmt (SelectorExpr (Ident obj ) (Ident color ) ) ) ",
"obj.color");
EXPECT_PARSE("(ExprStmt (CallExpr (SelectorExpr (IndexExpr (SelectorExpr "
"(Ident f ) (Ident p ) ) (Ident i ) ) "
"(Ident x ) ) ) ) ",
"f.p[i].x()");
}
TEST(GoParserTest, Conversions) {
EXPECT_PARSE(
"(ExprStmt (StarExpr (CallExpr (Ident Point ) (Ident p ) ) ) ) ",
"*Point(p)");
EXPECT_PARSE(
"(ExprStmt (CallExpr (StarExpr (Ident Point ) ) (Ident p ) ) ) ",
"(*Point)(p)");
EXPECT_PARSE("(ExprStmt (UnaryExpr (CallExpr (ChanType (Ident int ) 0 ) "
"(Ident c ) ) <- ) ) ",
"<-chan int(c)");
EXPECT_PARSE("(ExprStmt (TypeAssertExpr (Ident y ) (SelectorExpr (Ident io ) "
"(Ident Reader ) ) ) ) ",
"y.(io.Reader)");
}
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