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llvm-project/clang/unittests/Basic/SourceManagerTest.cpp

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//===- unittests/Basic/SourceManagerTest.cpp ------ SourceManager 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/ADT/SmallString.h"
#include "llvm/Config/config.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace clang;
namespace {
// The test fixture.
class SourceManagerTest : public ::testing::Test {
protected:
SourceManagerTest()
: 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(SourceManagerTest, isBeforeInTranslationUnit) {
const char *source =
"#define M(x) [x]\n"
"M(foo)";
MemoryBuffer *buf = MemoryBuffer::getMemBuffer(source);
FileID mainFileID = SourceMgr.createMainFileIDForMemBuffer(buf);
VoidModuleLoader ModLoader;
HeaderSearch HeaderInfo(FileMgr, Diags, LangOpts, &*Target);
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(3U, 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());
SourceLocation lsqrLoc = toks[0].getLocation();
SourceLocation idLoc = toks[1].getLocation();
SourceLocation rsqrLoc = toks[2].getLocation();
SourceLocation macroExpStartLoc = SourceMgr.translateLineCol(mainFileID, 2, 1);
SourceLocation macroExpEndLoc = SourceMgr.translateLineCol(mainFileID, 2, 6);
ASSERT_TRUE(macroExpStartLoc.isFileID());
ASSERT_TRUE(macroExpEndLoc.isFileID());
SmallString<32> str;
ASSERT_EQ("M", PP.getSpelling(macroExpStartLoc, str));
ASSERT_EQ(")", PP.getSpelling(macroExpEndLoc, str));
EXPECT_TRUE(SourceMgr.isBeforeInTranslationUnit(lsqrLoc, idLoc));
EXPECT_TRUE(SourceMgr.isBeforeInTranslationUnit(idLoc, rsqrLoc));
EXPECT_TRUE(SourceMgr.isBeforeInTranslationUnit(macroExpStartLoc, idLoc));
EXPECT_TRUE(SourceMgr.isBeforeInTranslationUnit(idLoc, macroExpEndLoc));
}
#if defined(LLVM_ON_UNIX)
TEST_F(SourceManagerTest, getMacroArgExpandedLocation) {
const char *header =
"#define FM(x,y) x\n";
const char *main =
"#include \"/test-header.h\"\n"
"#define VAL 0\n"
"FM(VAL,0)\n"
"FM(0,VAL)\n"
"FM(FM(0,VAL),0)\n"
"#define CONCAT(X, Y) X##Y\n"
"CONCAT(1,1)\n";
MemoryBuffer *headerBuf = MemoryBuffer::getMemBuffer(header);
MemoryBuffer *mainBuf = MemoryBuffer::getMemBuffer(main);
FileID mainFileID = SourceMgr.createMainFileIDForMemBuffer(mainBuf);
const FileEntry *headerFile = FileMgr.getVirtualFile("/test-header.h",
headerBuf->getBufferSize(), 0);
SourceMgr.overrideFileContents(headerFile, headerBuf);
VoidModuleLoader ModLoader;
HeaderSearch HeaderInfo(FileMgr, Diags, LangOpts, &*Target);
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(4U, toks.size());
ASSERT_EQ(tok::numeric_constant, toks[0].getKind());
ASSERT_EQ(tok::numeric_constant, toks[1].getKind());
ASSERT_EQ(tok::numeric_constant, toks[2].getKind());
ASSERT_EQ(tok::numeric_constant, toks[3].getKind());
SourceLocation defLoc = SourceMgr.translateLineCol(mainFileID, 2, 13);
SourceLocation loc1 = SourceMgr.translateLineCol(mainFileID, 3, 8);
SourceLocation loc2 = SourceMgr.translateLineCol(mainFileID, 4, 4);
SourceLocation loc3 = SourceMgr.translateLineCol(mainFileID, 5, 7);
SourceLocation defLoc2 = SourceMgr.translateLineCol(mainFileID, 6, 22);
defLoc = SourceMgr.getMacroArgExpandedLocation(defLoc);
loc1 = SourceMgr.getMacroArgExpandedLocation(loc1);
loc2 = SourceMgr.getMacroArgExpandedLocation(loc2);
loc3 = SourceMgr.getMacroArgExpandedLocation(loc3);
defLoc2 = SourceMgr.getMacroArgExpandedLocation(defLoc2);
EXPECT_TRUE(defLoc.isFileID());
EXPECT_TRUE(loc1.isFileID());
EXPECT_TRUE(SourceMgr.isMacroArgExpansion(loc2));
EXPECT_TRUE(SourceMgr.isMacroArgExpansion(loc3));
EXPECT_EQ(loc2, toks[1].getLocation());
EXPECT_EQ(loc3, toks[2].getLocation());
EXPECT_TRUE(defLoc2.isFileID());
}
namespace {
struct MacroAction {
SourceLocation Loc;
std::string Name;
bool isDefinition; // if false, it is expansion.
MacroAction(SourceLocation Loc, StringRef Name, bool isDefinition)
: Loc(Loc), Name(Name), isDefinition(isDefinition) { }
};
class MacroTracker : public PPCallbacks {
std::vector<MacroAction> &Macros;
public:
explicit MacroTracker(std::vector<MacroAction> &Macros) : Macros(Macros) { }
virtual void MacroDefined(const Token &MacroNameTok, const MacroInfo *MI) {
Macros.push_back(MacroAction(MI->getDefinitionLoc(),
MacroNameTok.getIdentifierInfo()->getName(),
true));
}
virtual void MacroExpands(const Token &MacroNameTok, const MacroInfo* MI,
SourceRange Range) {
Macros.push_back(MacroAction(MacroNameTok.getLocation(),
MacroNameTok.getIdentifierInfo()->getName(),
false));
}
};
}
TEST_F(SourceManagerTest, isBeforeInTranslationUnitWithMacroInInclude) {
const char *header =
"#define MACRO_IN_INCLUDE 0\n";
const char *main =
"#define M(x) x\n"
"#define INC \"/test-header.h\"\n"
"#include M(INC)\n"
"#define INC2 </test-header.h>\n"
"#include M(INC2)\n";
MemoryBuffer *headerBuf = MemoryBuffer::getMemBuffer(header);
MemoryBuffer *mainBuf = MemoryBuffer::getMemBuffer(main);
SourceMgr.createMainFileIDForMemBuffer(mainBuf);
const FileEntry *headerFile = FileMgr.getVirtualFile("/test-header.h",
headerBuf->getBufferSize(), 0);
SourceMgr.overrideFileContents(headerFile, headerBuf);
VoidModuleLoader ModLoader;
HeaderSearch HeaderInfo(FileMgr, Diags, LangOpts, &*Target);
Preprocessor PP(Diags, LangOpts,
Target.getPtr(),
SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/ 0,
/*OwnsHeaderSearch =*/false,
/*DelayInitialization =*/ false);
std::vector<MacroAction> Macros;
PP.addPPCallbacks(new MacroTracker(Macros));
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(0U, toks.size());
ASSERT_EQ(9U, Macros.size());
// #define M(x) x
ASSERT_TRUE(Macros[0].isDefinition);
ASSERT_EQ("M", Macros[0].Name);
// #define INC "/test-header.h"
ASSERT_TRUE(Macros[1].isDefinition);
ASSERT_EQ("INC", Macros[1].Name);
// M expansion in #include M(INC)
ASSERT_FALSE(Macros[2].isDefinition);
ASSERT_EQ("M", Macros[2].Name);
// INC expansion in #include M(INC)
ASSERT_FALSE(Macros[3].isDefinition);
ASSERT_EQ("INC", Macros[3].Name);
// #define MACRO_IN_INCLUDE 0
ASSERT_TRUE(Macros[4].isDefinition);
ASSERT_EQ("MACRO_IN_INCLUDE", Macros[4].Name);
// #define INC2 </test-header.h>
ASSERT_TRUE(Macros[5].isDefinition);
ASSERT_EQ("INC2", Macros[5].Name);
// M expansion in #include M(INC2)
ASSERT_FALSE(Macros[6].isDefinition);
ASSERT_EQ("M", Macros[6].Name);
// INC2 expansion in #include M(INC2)
ASSERT_FALSE(Macros[7].isDefinition);
ASSERT_EQ("INC2", Macros[7].Name);
// #define MACRO_IN_INCLUDE 0
ASSERT_TRUE(Macros[8].isDefinition);
ASSERT_EQ("MACRO_IN_INCLUDE", Macros[8].Name);
// The INC expansion in #include M(INC) comes before the first
// MACRO_IN_INCLUDE definition of the included file.
EXPECT_TRUE(SourceMgr.isBeforeInTranslationUnit(Macros[3].Loc, Macros[4].Loc));
// The INC2 expansion in #include M(INC2) comes before the second
// MACRO_IN_INCLUDE definition of the included file.
EXPECT_TRUE(SourceMgr.isBeforeInTranslationUnit(Macros[7].Loc, Macros[8].Loc));
}
#endif
} // anonymous namespace
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