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//===- unittests/Basic/LexerTest.cpp ------ Lexer tests -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Lex/ModuleLoader.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/Preprocessor.h"
#include "llvm/Config/config.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace clang;
namespace {
// The test fixture.
class LexerTest : public ::testing::Test {
protected:
LexerTest()
: FileMgr(FileMgrOpts),
DiagID(new DiagnosticIDs()),
Diags(DiagID, new IgnoringDiagConsumer()),
SourceMgr(Diags, FileMgr) {
TargetOpts.Triple = "x86_64-apple-darwin11.1.0";
Target = TargetInfo::CreateTargetInfo(Diags, TargetOpts);
}
FileSystemOptions FileMgrOpts;
FileManager FileMgr;
IntrusiveRefCntPtr<DiagnosticIDs> DiagID;
DiagnosticsEngine Diags;
SourceManager SourceMgr;
LangOptions LangOpts;
TargetOptions TargetOpts;
IntrusiveRefCntPtr<TargetInfo> Target;
};
class VoidModuleLoader : public ModuleLoader {
virtual Module *loadModule(SourceLocation ImportLoc, ModuleIdPath Path,
Module::NameVisibilityKind Visibility,
bool IsInclusionDirective) {
return 0;
}
};
TEST_F(LexerTest, LexAPI) {
const char *source =
"#define M(x) [x]\n"
"#define N(x) x\n"
"#define INN(x) x\n"
"#define NOF1 INN(val)\n"
"#define NOF2 val\n"
"M(foo) N([bar])\n"
"N(INN(val)) N(NOF1) N(NOF2) N(val)";
MemoryBuffer *buf = MemoryBuffer::getMemBuffer(source);
(void)SourceMgr.createMainFileIDForMemBuffer(buf);
VoidModuleLoader ModLoader;
HeaderSearch HeaderInfo(FileMgr, Diags, LangOpts, Target.getPtr());
Preprocessor PP(Diags, LangOpts,
Target.getPtr(),
SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/ 0,
/*OwnsHeaderSearch =*/false,
/*DelayInitialization =*/ false);
PP.EnterMainSourceFile();
std::vector<Token> toks;
while (1) {
Token tok;
PP.Lex(tok);
if (tok.is(tok::eof))
break;
toks.push_back(tok);
}
// Make sure we got the tokens that we expected.
ASSERT_EQ(10U, toks.size());
ASSERT_EQ(tok::l_square, toks[0].getKind());
ASSERT_EQ(tok::identifier, toks[1].getKind());
ASSERT_EQ(tok::r_square, toks[2].getKind());
ASSERT_EQ(tok::l_square, toks[3].getKind());
ASSERT_EQ(tok::identifier, toks[4].getKind());
ASSERT_EQ(tok::r_square, toks[5].getKind());
ASSERT_EQ(tok::identifier, toks[6].getKind());
ASSERT_EQ(tok::identifier, toks[7].getKind());
ASSERT_EQ(tok::identifier, toks[8].getKind());
ASSERT_EQ(tok::identifier, toks[9].getKind());
SourceLocation lsqrLoc = toks[0].getLocation();
SourceLocation idLoc = toks[1].getLocation();
SourceLocation rsqrLoc = toks[2].getLocation();
std::pair<SourceLocation,SourceLocation>
macroPair = SourceMgr.getExpansionRange(lsqrLoc);
SourceRange macroRange = SourceRange(macroPair.first, macroPair.second);
SourceLocation Loc;
EXPECT_TRUE(Lexer::isAtStartOfMacroExpansion(lsqrLoc, SourceMgr, LangOpts, &Loc));
EXPECT_EQ(Loc, macroRange.getBegin());
EXPECT_FALSE(Lexer::isAtStartOfMacroExpansion(idLoc, SourceMgr, LangOpts));
EXPECT_FALSE(Lexer::isAtEndOfMacroExpansion(idLoc, SourceMgr, LangOpts));
EXPECT_TRUE(Lexer::isAtEndOfMacroExpansion(rsqrLoc, SourceMgr, LangOpts, &Loc));
EXPECT_EQ(Loc, macroRange.getEnd());
CharSourceRange range = Lexer::makeFileCharRange(
CharSourceRange::getTokenRange(lsqrLoc, idLoc), SourceMgr, LangOpts);
EXPECT_TRUE(range.isInvalid());
range = Lexer::makeFileCharRange(CharSourceRange::getTokenRange(idLoc, rsqrLoc),
SourceMgr, LangOpts);
EXPECT_TRUE(range.isInvalid());
range = Lexer::makeFileCharRange(CharSourceRange::getTokenRange(lsqrLoc, rsqrLoc),
SourceMgr, LangOpts);
EXPECT_TRUE(!range.isTokenRange());
EXPECT_EQ(range.getAsRange(),
SourceRange(macroRange.getBegin(),
macroRange.getEnd().getLocWithOffset(1)));
StringRef text = Lexer::getSourceText(
CharSourceRange::getTokenRange(lsqrLoc, rsqrLoc),
SourceMgr, LangOpts);
EXPECT_EQ(text, "M(foo)");
SourceLocation macroLsqrLoc = toks[3].getLocation();
SourceLocation macroIdLoc = toks[4].getLocation();
SourceLocation macroRsqrLoc = toks[5].getLocation();
SourceLocation fileLsqrLoc = SourceMgr.getSpellingLoc(macroLsqrLoc);
SourceLocation fileIdLoc = SourceMgr.getSpellingLoc(macroIdLoc);
SourceLocation fileRsqrLoc = SourceMgr.getSpellingLoc(macroRsqrLoc);
range = Lexer::makeFileCharRange(
CharSourceRange::getTokenRange(macroLsqrLoc, macroIdLoc),
SourceMgr, LangOpts);
EXPECT_EQ(SourceRange(fileLsqrLoc, fileIdLoc.getLocWithOffset(3)),
range.getAsRange());
range = Lexer::makeFileCharRange(CharSourceRange::getTokenRange(macroIdLoc, macroRsqrLoc),
SourceMgr, LangOpts);
EXPECT_EQ(SourceRange(fileIdLoc, fileRsqrLoc.getLocWithOffset(1)),
range.getAsRange());
macroPair = SourceMgr.getExpansionRange(macroLsqrLoc);
range = Lexer::makeFileCharRange(
CharSourceRange::getTokenRange(macroLsqrLoc, macroRsqrLoc),
SourceMgr, LangOpts);
EXPECT_EQ(SourceRange(macroPair.first, macroPair.second.getLocWithOffset(1)),
range.getAsRange());
text = Lexer::getSourceText(
CharSourceRange::getTokenRange(SourceRange(macroLsqrLoc, macroIdLoc)),
SourceMgr, LangOpts);
EXPECT_EQ(text, "[bar");
SourceLocation idLoc1 = toks[6].getLocation();
SourceLocation idLoc2 = toks[7].getLocation();
SourceLocation idLoc3 = toks[8].getLocation();
SourceLocation idLoc4 = toks[9].getLocation();
EXPECT_EQ("INN", Lexer::getImmediateMacroName(idLoc1, SourceMgr, LangOpts));
EXPECT_EQ("INN", Lexer::getImmediateMacroName(idLoc2, SourceMgr, LangOpts));
EXPECT_EQ("NOF2", Lexer::getImmediateMacroName(idLoc3, SourceMgr, LangOpts));
EXPECT_EQ("N", Lexer::getImmediateMacroName(idLoc4, SourceMgr, LangOpts));
}
} // anonymous namespace
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