unittests/Lex/PPCallbacksTest.cpp - third_party/swift-clang - Git at Google

 //===- unittests/Lex/PPCallbacksTest.cpp - PPCallbacks tests ------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===--------------------------------------------------------------===//

 #include "clang/Lex/Preprocessor.h"
 #include "clang/AST/ASTConsumer.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/MemoryBufferCache.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/TargetOptions.h"
 #include "clang/Lex/HeaderSearch.h"
 #include "clang/Lex/HeaderSearchOptions.h"
 #include "clang/Lex/ModuleLoader.h"
 #include "clang/Lex/PreprocessorOptions.h"
 #include "clang/Parse/Parser.h"
 #include "clang/Sema/Sema.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/Support/Path.h"
 #include "gtest/gtest.h"

 using namespace clang;

 namespace {

 // Stub out module loading.
 class VoidModuleLoader : public ModuleLoader {
   ModuleLoadResult loadModule(SourceLocation ImportLoc,
                               ModuleIdPath Path,
                               Module::NameVisibilityKind Visibility,
                               bool IsInclusionDirective) override {
     return ModuleLoadResult();
   }

   void makeModuleVisible(Module *Mod,
                          Module::NameVisibilityKind Visibility,
                          SourceLocation ImportLoc) override { }

   GlobalModuleIndex *loadGlobalModuleIndex(SourceLocation TriggerLoc) override
     { return nullptr; }
   bool lookupMissingImports(StringRef Name, SourceLocation TriggerLoc) override
     { return 0; }
 };

 // Stub to collect data from InclusionDirective callbacks.
 class InclusionDirectiveCallbacks : public PPCallbacks {
 public:
   void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
                           StringRef FileName, bool IsAngled,
                           CharSourceRange FilenameRange, const FileEntry *File,
                           StringRef SearchPath, StringRef RelativePath,
                           const Module *Imported) override {
       this->HashLoc = HashLoc;
       this->IncludeTok = IncludeTok;
       this->FileName = FileName.str();
       this->IsAngled = IsAngled;
       this->FilenameRange = FilenameRange;
       this->File = File;
       this->SearchPath = SearchPath.str();
       this->RelativePath = RelativePath.str();
       this->Imported = Imported;
   }

   SourceLocation HashLoc;
   Token IncludeTok;
   SmallString<16> FileName;
   bool IsAngled;
   CharSourceRange FilenameRange;
   const FileEntry* File;
   SmallString<16> SearchPath;
   SmallString<16> RelativePath;
   const Module* Imported;
 };

 // Stub to collect data from PragmaOpenCLExtension callbacks.
 class PragmaOpenCLExtensionCallbacks : public PPCallbacks {
 public:
   typedef struct {
     SmallString<16> Name;
     unsigned State;
   } CallbackParameters;

   PragmaOpenCLExtensionCallbacks() : Name("Not called."), State(99) {}

   void PragmaOpenCLExtension(clang::SourceLocation NameLoc,
                              const clang::IdentifierInfo *Name,
                              clang::SourceLocation StateLoc,
                              unsigned State) override {
       this->NameLoc = NameLoc;
       this->Name = Name->getName();
       this->StateLoc = StateLoc;
       this->State = State;
   }

   SourceLocation NameLoc;
   SmallString<16> Name;
   SourceLocation StateLoc;
   unsigned State;
 };

 // PPCallbacks test fixture.
 class PPCallbacksTest : public ::testing::Test {
 protected:
   PPCallbacksTest()
       : InMemoryFileSystem(new vfs::InMemoryFileSystem),
         FileMgr(FileSystemOptions(), InMemoryFileSystem),
         DiagID(new DiagnosticIDs()), DiagOpts(new DiagnosticOptions()),
         Diags(DiagID, DiagOpts.get(), new IgnoringDiagConsumer()),
         SourceMgr(Diags, FileMgr), TargetOpts(new TargetOptions()) {
     TargetOpts->Triple = "x86_64-apple-darwin11.1.0";
     Target = TargetInfo::CreateTargetInfo(Diags, TargetOpts);
   }

   IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem;
   FileManager FileMgr;
   IntrusiveRefCntPtr<DiagnosticIDs> DiagID;
   IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts;
   DiagnosticsEngine Diags;
   SourceManager SourceMgr;
   LangOptions LangOpts;
   std::shared_ptr<TargetOptions> TargetOpts;
   IntrusiveRefCntPtr<TargetInfo> Target;

   // Register a header path as a known file and add its location
   // to search path.
   void AddFakeHeader(HeaderSearch& HeaderInfo, const char* HeaderPath,
     bool IsSystemHeader) {
       // Tell FileMgr about header.
       InMemoryFileSystem->addFile(HeaderPath, 0,
                                   llvm::MemoryBuffer::getMemBuffer("\n"));

       // Add header's parent path to search path.
       StringRef SearchPath = llvm::sys::path::parent_path(HeaderPath);
       const DirectoryEntry *DE = FileMgr.getDirectory(SearchPath);
       DirectoryLookup DL(DE, SrcMgr::C_User, false);
       HeaderInfo.AddSearchPath(DL, IsSystemHeader);
   }

   // Get the raw source string of the range.
   StringRef GetSourceString(CharSourceRange Range) {
     const char* B = SourceMgr.getCharacterData(Range.getBegin());
     const char* E = SourceMgr.getCharacterData(Range.getEnd());

     return StringRef(B, E - B);
   }

   // Run lexer over SourceText and collect FilenameRange from
   // the InclusionDirective callback.
   CharSourceRange InclusionDirectiveFilenameRange(const char* SourceText,
       const char* HeaderPath, bool SystemHeader) {
     std::unique_ptr<llvm::MemoryBuffer> Buf =
         llvm::MemoryBuffer::getMemBuffer(SourceText);
     SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(Buf)));

     VoidModuleLoader ModLoader;
     MemoryBufferCache PCMCache;

     HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
                             Diags, LangOpts, Target.get());
     AddFakeHeader(HeaderInfo, HeaderPath, SystemHeader);

     Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
                     SourceMgr, PCMCache, HeaderInfo, ModLoader,
                     /*IILookup =*/nullptr,
                     /*OwnsHeaderSearch =*/false);
     PP.Initialize(*Target);
     InclusionDirectiveCallbacks* Callbacks = new InclusionDirectiveCallbacks;
     PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(Callbacks));

     // Lex source text.
     PP.EnterMainSourceFile();

     while (true) {
       Token Tok;
       PP.Lex(Tok);
       if (Tok.is(tok::eof))
         break;
     }

     // Callbacks have been executed at this point -- return filename range.
     return Callbacks->FilenameRange;
   }

   PragmaOpenCLExtensionCallbacks::CallbackParameters
   PragmaOpenCLExtensionCall(const char* SourceText) {
     LangOptions OpenCLLangOpts;
     OpenCLLangOpts.OpenCL = 1;

     std::unique_ptr<llvm::MemoryBuffer> SourceBuf =
         llvm::MemoryBuffer::getMemBuffer(SourceText, "test.cl");
     SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(SourceBuf)));

     VoidModuleLoader ModLoader;
     MemoryBufferCache PCMCache;
     HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
                             Diags, OpenCLLangOpts, Target.get());

     Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags,
                     OpenCLLangOpts, SourceMgr, PCMCache, HeaderInfo, ModLoader,
                     /*IILookup =*/nullptr,
                     /*OwnsHeaderSearch =*/false);
     PP.Initialize(*Target);

     // parser actually sets correct pragma handlers for preprocessor
     // according to LangOptions, so we init Parser to register opencl
     // pragma handlers
     ASTContext Context(OpenCLLangOpts, SourceMgr,
                        PP.getIdentifierTable(), PP.getSelectorTable(),
                        PP.getBuiltinInfo());
     Context.InitBuiltinTypes(*Target);

     ASTConsumer Consumer;
     Sema S(PP, Context, Consumer);
     Parser P(PP, S, false);
     PragmaOpenCLExtensionCallbacks* Callbacks = new PragmaOpenCLExtensionCallbacks;
     PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(Callbacks));

     // Lex source text.
     PP.EnterMainSourceFile();
     while (true) {
       Token Tok;
       PP.Lex(Tok);
       if (Tok.is(tok::eof))
         break;
     }

     PragmaOpenCLExtensionCallbacks::CallbackParameters RetVal = {
       Callbacks->Name,
       Callbacks->State
     };
     return RetVal;
   }
 };

 TEST_F(PPCallbacksTest, QuotedFilename) {
   const char* Source =
     "#include \"quoted.h\"\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/quoted.h", false);

   ASSERT_EQ("\"quoted.h\"", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, AngledFilename) {
   const char* Source =
     "#include <angled.h>\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/angled.h", true);

   ASSERT_EQ("<angled.h>", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, QuotedInMacro) {
   const char* Source =
     "#define MACRO_QUOTED \"quoted.h\"\n"
     "#include MACRO_QUOTED\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/quoted.h", false);

   ASSERT_EQ("\"quoted.h\"", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, AngledInMacro) {
   const char* Source =
     "#define MACRO_ANGLED <angled.h>\n"
     "#include MACRO_ANGLED\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/angled.h", true);

   ASSERT_EQ("<angled.h>", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, StringizedMacroArgument) {
   const char* Source =
     "#define MACRO_STRINGIZED(x) #x\n"
     "#include MACRO_STRINGIZED(quoted.h)\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/quoted.h", false);

   ASSERT_EQ("\"quoted.h\"", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, ConcatenatedMacroArgument) {
   const char* Source =
     "#define MACRO_ANGLED <angled.h>\n"
     "#define MACRO_CONCAT(x, y) x ## _ ## y\n"
     "#include MACRO_CONCAT(MACRO, ANGLED)\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/angled.h", false);

   ASSERT_EQ("<angled.h>", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, TrigraphFilename) {
   const char* Source =
     "#include \"tri\?\?-graph.h\"\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/tri~graph.h", false);

   ASSERT_EQ("\"tri\?\?-graph.h\"", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, TrigraphInMacro) {
   const char* Source =
     "#define MACRO_TRIGRAPH \"tri\?\?-graph.h\"\n"
     "#include MACRO_TRIGRAPH\n";

   CharSourceRange Range =
     InclusionDirectiveFilenameRange(Source, "/tri~graph.h", false);

   ASSERT_EQ("\"tri\?\?-graph.h\"", GetSourceString(Range));
 }

 TEST_F(PPCallbacksTest, OpenCLExtensionPragmaEnabled) {
   const char* Source =
     "#pragma OPENCL EXTENSION cl_khr_fp64 : enable\n";

   PragmaOpenCLExtensionCallbacks::CallbackParameters Parameters =
     PragmaOpenCLExtensionCall(Source);

   ASSERT_EQ("cl_khr_fp64", Parameters.Name);
   unsigned ExpectedState = 1;
   ASSERT_EQ(ExpectedState, Parameters.State);
 }

 TEST_F(PPCallbacksTest, OpenCLExtensionPragmaDisabled) {
   const char* Source =
     "#pragma OPENCL EXTENSION cl_khr_fp16 : disable\n";

   PragmaOpenCLExtensionCallbacks::CallbackParameters Parameters =
     PragmaOpenCLExtensionCall(Source);

   ASSERT_EQ("cl_khr_fp16", Parameters.Name);
   unsigned ExpectedState = 0;
   ASSERT_EQ(ExpectedState, Parameters.State);
 }

 } // anonoymous namespace
	//===- unittests/Lex/PPCallbacksTest.cpp - PPCallbacks tests ------===//
	//
	// The LLVM Compiler Infrastructure
	//
	// This file is distributed under the University of Illinois Open Source
	// License. See LICENSE.TXT for details.
	//
	//===--------------------------------------------------------------===//

	#include "clang/Lex/Preprocessor.h"
	#include "clang/AST/ASTConsumer.h"
	#include "clang/AST/ASTContext.h"
	#include "clang/Basic/Diagnostic.h"
	#include "clang/Basic/DiagnosticOptions.h"
	#include "clang/Basic/FileManager.h"
	#include "clang/Basic/LangOptions.h"
	#include "clang/Basic/MemoryBufferCache.h"
	#include "clang/Basic/SourceManager.h"
	#include "clang/Basic/TargetInfo.h"
	#include "clang/Basic/TargetOptions.h"
	#include "clang/Lex/HeaderSearch.h"
	#include "clang/Lex/HeaderSearchOptions.h"
	#include "clang/Lex/ModuleLoader.h"
	#include "clang/Lex/PreprocessorOptions.h"
	#include "clang/Parse/Parser.h"
	#include "clang/Sema/Sema.h"
	#include "llvm/ADT/SmallString.h"
	#include "llvm/Support/Path.h"
	#include "gtest/gtest.h"

	using namespace clang;

	namespace {

	// Stub out module loading.
	class VoidModuleLoader : public ModuleLoader {
	ModuleLoadResult loadModule(SourceLocation ImportLoc,
	ModuleIdPath Path,
	Module::NameVisibilityKind Visibility,
	bool IsInclusionDirective) override {
	return ModuleLoadResult();
	}

	void makeModuleVisible(Module *Mod,
	Module::NameVisibilityKind Visibility,
	SourceLocation ImportLoc) override { }

	GlobalModuleIndex *loadGlobalModuleIndex(SourceLocation TriggerLoc) override
	{ return nullptr; }
	bool lookupMissingImports(StringRef Name, SourceLocation TriggerLoc) override
	{ return 0; }
	};

	// Stub to collect data from InclusionDirective callbacks.
	class InclusionDirectiveCallbacks : public PPCallbacks {
	public:
	void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
	StringRef FileName, bool IsAngled,
	CharSourceRange FilenameRange, const FileEntry *File,
	StringRef SearchPath, StringRef RelativePath,
	const Module *Imported) override {
	this->HashLoc = HashLoc;
	this->IncludeTok = IncludeTok;
	this->FileName = FileName.str();
	this->IsAngled = IsAngled;
	this->FilenameRange = FilenameRange;
	this->File = File;
	this->SearchPath = SearchPath.str();
	this->RelativePath = RelativePath.str();
	this->Imported = Imported;
	}

	SourceLocation HashLoc;
	Token IncludeTok;
	SmallString<16> FileName;
	bool IsAngled;
	CharSourceRange FilenameRange;
	const FileEntry* File;
	SmallString<16> SearchPath;
	SmallString<16> RelativePath;
	const Module* Imported;
	};

	// Stub to collect data from PragmaOpenCLExtension callbacks.
	class PragmaOpenCLExtensionCallbacks : public PPCallbacks {
	public:
	typedef struct {
	SmallString<16> Name;
	unsigned State;
	} CallbackParameters;

	PragmaOpenCLExtensionCallbacks() : Name("Not called."), State(99) {}

	void PragmaOpenCLExtension(clang::SourceLocation NameLoc,
	const clang::IdentifierInfo *Name,
	clang::SourceLocation StateLoc,
	unsigned State) override {
	this->NameLoc = NameLoc;
	this->Name = Name->getName();
	this->StateLoc = StateLoc;
	this->State = State;
	}

	SourceLocation NameLoc;
	SmallString<16> Name;
	SourceLocation StateLoc;
	unsigned State;
	};

	// PPCallbacks test fixture.
	class PPCallbacksTest : public ::testing::Test {
	protected:
	PPCallbacksTest()
	: InMemoryFileSystem(new vfs::InMemoryFileSystem),
	FileMgr(FileSystemOptions(), InMemoryFileSystem),
	DiagID(new DiagnosticIDs()), DiagOpts(new DiagnosticOptions()),
	Diags(DiagID, DiagOpts.get(), new IgnoringDiagConsumer()),
	SourceMgr(Diags, FileMgr), TargetOpts(new TargetOptions()) {
	TargetOpts->Triple = "x86_64-apple-darwin11.1.0";
	Target = TargetInfo::CreateTargetInfo(Diags, TargetOpts);
	}

	IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem;
	FileManager FileMgr;
	IntrusiveRefCntPtr<DiagnosticIDs> DiagID;
	IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts;
	DiagnosticsEngine Diags;
	SourceManager SourceMgr;
	LangOptions LangOpts;
	std::shared_ptr<TargetOptions> TargetOpts;
	IntrusiveRefCntPtr<TargetInfo> Target;

	// Register a header path as a known file and add its location
	// to search path.
	void AddFakeHeader(HeaderSearch& HeaderInfo, const char* HeaderPath,
	bool IsSystemHeader) {
	// Tell FileMgr about header.
	InMemoryFileSystem->addFile(HeaderPath, 0,
	llvm::MemoryBuffer::getMemBuffer("\n"));

	// Add header's parent path to search path.
	StringRef SearchPath = llvm::sys::path::parent_path(HeaderPath);
	const DirectoryEntry *DE = FileMgr.getDirectory(SearchPath);
	DirectoryLookup DL(DE, SrcMgr::C_User, false);
	HeaderInfo.AddSearchPath(DL, IsSystemHeader);
	}

	// Get the raw source string of the range.
	StringRef GetSourceString(CharSourceRange Range) {
	const char* B = SourceMgr.getCharacterData(Range.getBegin());
	const char* E = SourceMgr.getCharacterData(Range.getEnd());

	return StringRef(B, E - B);
	}

	// Run lexer over SourceText and collect FilenameRange from
	// the InclusionDirective callback.
	CharSourceRange InclusionDirectiveFilenameRange(const char* SourceText,
	const char* HeaderPath, bool SystemHeader) {
	std::unique_ptr<llvm::MemoryBuffer> Buf =
	llvm::MemoryBuffer::getMemBuffer(SourceText);
	SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(Buf)));

	VoidModuleLoader ModLoader;
	MemoryBufferCache PCMCache;

	HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
	Diags, LangOpts, Target.get());
	AddFakeHeader(HeaderInfo, HeaderPath, SystemHeader);

	Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
	SourceMgr, PCMCache, HeaderInfo, ModLoader,
	/IILookup =/nullptr,
	/OwnsHeaderSearch =/false);
	PP.Initialize(*Target);
	InclusionDirectiveCallbacks* Callbacks = new InclusionDirectiveCallbacks;
	PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(Callbacks));

	// Lex source text.
	PP.EnterMainSourceFile();

	while (true) {
	Token Tok;
	PP.Lex(Tok);
	if (Tok.is(tok::eof))
	break;
	}

	// Callbacks have been executed at this point -- return filename range.
	return Callbacks->FilenameRange;
	}

	PragmaOpenCLExtensionCallbacks::CallbackParameters
	PragmaOpenCLExtensionCall(const char* SourceText) {
	LangOptions OpenCLLangOpts;
	OpenCLLangOpts.OpenCL = 1;

	std::unique_ptr<llvm::MemoryBuffer> SourceBuf =
	llvm::MemoryBuffer::getMemBuffer(SourceText, "test.cl");
	SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(SourceBuf)));

	VoidModuleLoader ModLoader;
	MemoryBufferCache PCMCache;
	HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
	Diags, OpenCLLangOpts, Target.get());

	Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags,
	OpenCLLangOpts, SourceMgr, PCMCache, HeaderInfo, ModLoader,
	/IILookup =/nullptr,
	/OwnsHeaderSearch =/false);
	PP.Initialize(*Target);

	// parser actually sets correct pragma handlers for preprocessor
	// according to LangOptions, so we init Parser to register opencl
	// pragma handlers
	ASTContext Context(OpenCLLangOpts, SourceMgr,
	PP.getIdentifierTable(), PP.getSelectorTable(),
	PP.getBuiltinInfo());
	Context.InitBuiltinTypes(*Target);

	ASTConsumer Consumer;
	Sema S(PP, Context, Consumer);
	Parser P(PP, S, false);
	PragmaOpenCLExtensionCallbacks* Callbacks = new PragmaOpenCLExtensionCallbacks;
	PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(Callbacks));

	// Lex source text.
	PP.EnterMainSourceFile();
	while (true) {
	Token Tok;
	PP.Lex(Tok);
	if (Tok.is(tok::eof))
	break;
	}

	PragmaOpenCLExtensionCallbacks::CallbackParameters RetVal = {
	Callbacks->Name,
	Callbacks->State
	};
	return RetVal;
	}
	};

	TEST_F(PPCallbacksTest, QuotedFilename) {
	const char* Source =
	"#include \"quoted.h\"\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/quoted.h", false);

	ASSERT_EQ("\"quoted.h\"", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, AngledFilename) {
	const char* Source =
	"#include <angled.h>\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/angled.h", true);

	ASSERT_EQ("<angled.h>", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, QuotedInMacro) {
	const char* Source =
	"#define MACRO_QUOTED \"quoted.h\"\n"
	"#include MACRO_QUOTED\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/quoted.h", false);

	ASSERT_EQ("\"quoted.h\"", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, AngledInMacro) {
	const char* Source =
	"#define MACRO_ANGLED <angled.h>\n"
	"#include MACRO_ANGLED\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/angled.h", true);

	ASSERT_EQ("<angled.h>", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, StringizedMacroArgument) {
	const char* Source =
	"#define MACRO_STRINGIZED(x) #x\n"
	"#include MACRO_STRINGIZED(quoted.h)\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/quoted.h", false);

	ASSERT_EQ("\"quoted.h\"", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, ConcatenatedMacroArgument) {
	const char* Source =
	"#define MACRO_ANGLED <angled.h>\n"
	"#define MACRO_CONCAT(x, y) x ## _ ## y\n"
	"#include MACRO_CONCAT(MACRO, ANGLED)\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/angled.h", false);

	ASSERT_EQ("<angled.h>", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, TrigraphFilename) {
	const char* Source =
	"#include \"tri\?\?-graph.h\"\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/tri~graph.h", false);

	ASSERT_EQ("\"tri\?\?-graph.h\"", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, TrigraphInMacro) {
	const char* Source =
	"#define MACRO_TRIGRAPH \"tri\?\?-graph.h\"\n"
	"#include MACRO_TRIGRAPH\n";

	CharSourceRange Range =
	InclusionDirectiveFilenameRange(Source, "/tri~graph.h", false);

	ASSERT_EQ("\"tri\?\?-graph.h\"", GetSourceString(Range));
	}

	TEST_F(PPCallbacksTest, OpenCLExtensionPragmaEnabled) {
	const char* Source =
	"#pragma OPENCL EXTENSION cl_khr_fp64 : enable\n";

	PragmaOpenCLExtensionCallbacks::CallbackParameters Parameters =
	PragmaOpenCLExtensionCall(Source);

	ASSERT_EQ("cl_khr_fp64", Parameters.Name);
	unsigned ExpectedState = 1;
	ASSERT_EQ(ExpectedState, Parameters.State);
	}

	TEST_F(PPCallbacksTest, OpenCLExtensionPragmaDisabled) {
	const char* Source =
	"#pragma OPENCL EXTENSION cl_khr_fp16 : disable\n";

	PragmaOpenCLExtensionCallbacks::CallbackParameters Parameters =
	PragmaOpenCLExtensionCall(Source);

	ASSERT_EQ("cl_khr_fp16", Parameters.Name);
	unsigned ExpectedState = 0;
	ASSERT_EQ(ExpectedState, Parameters.State);
	}

	} // anonoymous namespace