| //===--- clang.cpp - C-Language Front-end ---------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This utility may be invoked in the following manner: |
| // clang --help - Output help info. |
| // clang [options] - Read from stdin. |
| // clang [options] file - Read from "file". |
| // clang [options] file1 file2 - Read these files. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "Options.h" |
| #include "clang/AST/ASTConsumer.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/DeclGroup.h" |
| #include "clang/Analysis/PathDiagnostic.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "clang/Basic/Version.h" |
| #include "clang/CodeGen/ModuleBuilder.h" |
| #include "clang/Frontend/ASTConsumers.h" |
| #include "clang/Frontend/ASTUnit.h" |
| #include "clang/Frontend/AnalysisConsumer.h" |
| #include "clang/Frontend/ChainedDiagnosticClient.h" |
| #include "clang/Frontend/CommandLineSourceLoc.h" |
| #include "clang/Frontend/CompilerInvocation.h" |
| #include "clang/Frontend/DependencyOutputOptions.h" |
| #include "clang/Frontend/FixItRewriter.h" |
| #include "clang/Frontend/FrontendDiagnostic.h" |
| #include "clang/Frontend/PCHReader.h" |
| #include "clang/Frontend/PathDiagnosticClients.h" |
| #include "clang/Frontend/PreprocessorOptions.h" |
| #include "clang/Frontend/PreprocessorOutputOptions.h" |
| #include "clang/Frontend/TextDiagnosticBuffer.h" |
| #include "clang/Frontend/TextDiagnosticPrinter.h" |
| #include "clang/Frontend/Utils.h" |
| #include "clang/Lex/HeaderSearch.h" |
| #include "clang/Lex/LexDiagnostic.h" |
| #include "clang/Parse/Parser.h" |
| #include "clang/Sema/CodeCompleteConsumer.h" |
| #include "clang/Sema/ParseAST.h" |
| #include "clang/Sema/SemaDiagnostic.h" |
| #include "llvm/LLVMContext.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/ADT/SmallPtrSet.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/StringMap.h" |
| #include "llvm/ADT/StringSwitch.h" |
| #include "llvm/Config/config.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/ManagedStatic.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/PluginLoader.h" |
| #include "llvm/Support/PrettyStackTrace.h" |
| #include "llvm/Support/Timer.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include "llvm/System/Host.h" |
| #include "llvm/System/Path.h" |
| #include "llvm/System/Program.h" |
| #include "llvm/System/Signals.h" |
| #include "llvm/Target/TargetSelect.h" |
| #include <cstdlib> |
| #if HAVE_SYS_TYPES_H |
| # include <sys/types.h> |
| #endif |
| |
| using namespace clang; |
| |
| //===----------------------------------------------------------------------===// |
| // Code Completion Options |
| //===----------------------------------------------------------------------===// |
| |
| enum CodeCompletionPrinter { |
| CCP_Debug, |
| CCP_CIndex |
| }; |
| |
| static llvm::cl::opt<ParsedSourceLocation> |
| CodeCompletionAt("code-completion-at", |
| llvm::cl::value_desc("file:line:column"), |
| llvm::cl::desc("Dump code-completion information at a location")); |
| |
| static llvm::cl::opt<CodeCompletionPrinter> |
| CodeCompletionPrinter("code-completion-printer", |
| llvm::cl::desc("Choose output type:"), |
| llvm::cl::init(CCP_Debug), |
| llvm::cl::values( |
| clEnumValN(CCP_Debug, "debug", |
| "Debug code-completion results"), |
| clEnumValN(CCP_CIndex, "cindex", |
| "Code-completion results for the CIndex library"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<bool> |
| CodeCompletionWantsMacros("code-completion-macros", |
| llvm::cl::desc("Include macros in code-completion results")); |
| |
| /// \brief Buld a new code-completion consumer that prints the results of |
| /// code completion to standard output. |
| static CodeCompleteConsumer *BuildPrintingCodeCompleter(Sema &S, void *) { |
| switch (CodeCompletionPrinter.getValue()) { |
| case CCP_Debug: |
| return new PrintingCodeCompleteConsumer(S, CodeCompletionWantsMacros, |
| llvm::outs()); |
| |
| case CCP_CIndex: |
| return new CIndexCodeCompleteConsumer(S, CodeCompletionWantsMacros, |
| llvm::outs()); |
| }; |
| |
| return 0; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Frontend Actions |
| //===----------------------------------------------------------------------===// |
| |
| enum ProgActions { |
| RewriteObjC, // ObjC->C Rewriter. |
| RewriteBlocks, // ObjC->C Rewriter for Blocks. |
| RewriteMacros, // Expand macros but not #includes. |
| RewriteTest, // Rewriter playground |
| HTMLTest, // HTML displayer testing stuff. |
| EmitAssembly, // Emit a .s file. |
| EmitLLVM, // Emit a .ll file. |
| EmitBC, // Emit a .bc file. |
| EmitLLVMOnly, // Generate LLVM IR, but do not |
| EmitHTML, // Translate input source into HTML. |
| ASTPrint, // Parse ASTs and print them. |
| ASTPrintXML, // Parse ASTs and print them in XML. |
| ASTDump, // Parse ASTs and dump them. |
| ASTView, // Parse ASTs and view them in Graphviz. |
| PrintDeclContext, // Print DeclContext and their Decls. |
| DumpRecordLayouts, // Dump record layout information. |
| ParsePrintCallbacks, // Parse and print each callback. |
| ParseSyntaxOnly, // Parse and perform semantic analysis. |
| ParseNoop, // Parse with noop callbacks. |
| RunPreprocessorOnly, // Just lex, no output. |
| PrintPreprocessedInput, // -E mode. |
| DumpTokens, // Dump out preprocessed tokens. |
| DumpRawTokens, // Dump out raw tokens. |
| RunAnalysis, // Run one or more source code analyses. |
| GeneratePTH, // Generate pre-tokenized header. |
| GeneratePCH, // Generate pre-compiled header. |
| InheritanceView // View C++ inheritance for a specified class. |
| }; |
| |
| static llvm::cl::opt<ProgActions> |
| ProgAction(llvm::cl::desc("Choose output type:"), llvm::cl::ZeroOrMore, |
| llvm::cl::init(ParseSyntaxOnly), |
| llvm::cl::values( |
| clEnumValN(RunPreprocessorOnly, "Eonly", |
| "Just run preprocessor, no output (for timings)"), |
| clEnumValN(PrintPreprocessedInput, "E", |
| "Run preprocessor, emit preprocessed file"), |
| clEnumValN(DumpRawTokens, "dump-raw-tokens", |
| "Lex file in raw mode and dump raw tokens"), |
| clEnumValN(RunAnalysis, "analyze", |
| "Run static analysis engine"), |
| clEnumValN(DumpTokens, "dump-tokens", |
| "Run preprocessor, dump internal rep of tokens"), |
| clEnumValN(ParseNoop, "parse-noop", |
| "Run parser with noop callbacks (for timings)"), |
| clEnumValN(ParseSyntaxOnly, "fsyntax-only", |
| "Run parser and perform semantic analysis"), |
| clEnumValN(ParsePrintCallbacks, "parse-print-callbacks", |
| "Run parser and print each callback invoked"), |
| clEnumValN(EmitHTML, "emit-html", |
| "Output input source as HTML"), |
| clEnumValN(ASTPrint, "ast-print", |
| "Build ASTs and then pretty-print them"), |
| clEnumValN(ASTPrintXML, "ast-print-xml", |
| "Build ASTs and then print them in XML format"), |
| clEnumValN(ASTDump, "ast-dump", |
| "Build ASTs and then debug dump them"), |
| clEnumValN(ASTView, "ast-view", |
| "Build ASTs and view them with GraphViz"), |
| clEnumValN(PrintDeclContext, "print-decl-contexts", |
| "Print DeclContexts and their Decls"), |
| clEnumValN(DumpRecordLayouts, "dump-record-layouts", |
| "Dump record layout information"), |
| clEnumValN(GeneratePTH, "emit-pth", |
| "Generate pre-tokenized header file"), |
| clEnumValN(GeneratePCH, "emit-pch", |
| "Generate pre-compiled header file"), |
| clEnumValN(EmitAssembly, "S", |
| "Emit native assembly code"), |
| clEnumValN(EmitLLVM, "emit-llvm", |
| "Build ASTs then convert to LLVM, emit .ll file"), |
| clEnumValN(EmitBC, "emit-llvm-bc", |
| "Build ASTs then convert to LLVM, emit .bc file"), |
| clEnumValN(EmitLLVMOnly, "emit-llvm-only", |
| "Build ASTs and convert to LLVM, discarding output"), |
| clEnumValN(RewriteTest, "rewrite-test", |
| "Rewriter playground"), |
| clEnumValN(RewriteObjC, "rewrite-objc", |
| "Rewrite ObjC into C (code rewriter example)"), |
| clEnumValN(RewriteMacros, "rewrite-macros", |
| "Expand macros without full preprocessing"), |
| clEnumValN(RewriteBlocks, "rewrite-blocks", |
| "Rewrite Blocks to C"), |
| clEnumValEnd)); |
| |
| //===----------------------------------------------------------------------===// |
| // Frontend Options |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::list<ParsedSourceLocation> |
| FixItAtLocations("fixit-at", llvm::cl::value_desc("source-location"), |
| llvm::cl::desc("Perform Fix-It modifications at the given source location")); |
| |
| static llvm::cl::opt<bool> |
| Verbose("v", llvm::cl::desc("Enable verbose output")); |
| |
| //===----------------------------------------------------------------------===// |
| // Language Options |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<LangKind> |
| BaseLang("x", llvm::cl::desc("Base language to compile"), |
| llvm::cl::init(langkind_unspecified), |
| llvm::cl::values(clEnumValN(langkind_c, "c", "C"), |
| clEnumValN(langkind_ocl, "cl", "OpenCL C"), |
| clEnumValN(langkind_cxx, "c++", "C++"), |
| clEnumValN(langkind_objc, "objective-c", "Objective C"), |
| clEnumValN(langkind_objcxx,"objective-c++","Objective C++"), |
| clEnumValN(langkind_c_cpp, "cpp-output", |
| "Preprocessed C"), |
| clEnumValN(langkind_asm_cpp, "assembler-with-cpp", |
| "Preprocessed asm"), |
| clEnumValN(langkind_cxx_cpp, "c++-cpp-output", |
| "Preprocessed C++"), |
| clEnumValN(langkind_objc_cpp, "objective-c-cpp-output", |
| "Preprocessed Objective C"), |
| clEnumValN(langkind_objcxx_cpp, "objective-c++-cpp-output", |
| "Preprocessed Objective C++"), |
| clEnumValN(langkind_c, "c-header", |
| "C header"), |
| clEnumValN(langkind_objc, "objective-c-header", |
| "Objective-C header"), |
| clEnumValN(langkind_cxx, "c++-header", |
| "C++ header"), |
| clEnumValN(langkind_objcxx, "objective-c++-header", |
| "Objective-C++ header"), |
| clEnumValN(langkind_ast, "ast", |
| "Clang AST"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<std::string> |
| TargetTriple("triple", |
| llvm::cl::desc("Specify target triple (e.g. i686-apple-darwin9)")); |
| |
| static llvm::cl::opt<std::string> |
| TargetABI("target-abi", |
| llvm::cl::desc("Target a particular ABI type")); |
| |
| //===----------------------------------------------------------------------===// |
| // SourceManager initialization. |
| //===----------------------------------------------------------------------===// |
| |
| static bool InitializeSourceManager(Preprocessor &PP, |
| const FrontendOptions &FEOpts, |
| const std::string &InFile) { |
| // Figure out where to get and map in the main file. |
| SourceManager &SourceMgr = PP.getSourceManager(); |
| FileManager &FileMgr = PP.getFileManager(); |
| |
| if (FEOpts.EmptyInputOnly) { |
| const char *EmptyStr = ""; |
| llvm::MemoryBuffer *SB = |
| llvm::MemoryBuffer::getMemBuffer(EmptyStr, EmptyStr, "<empty input>"); |
| SourceMgr.createMainFileIDForMemBuffer(SB); |
| } else if (InFile != "-") { |
| const FileEntry *File = FileMgr.getFile(InFile); |
| if (File) SourceMgr.createMainFileID(File, SourceLocation()); |
| if (SourceMgr.getMainFileID().isInvalid()) { |
| PP.getDiagnostics().Report(diag::err_fe_error_reading) << InFile.c_str(); |
| return true; |
| } |
| } else { |
| llvm::MemoryBuffer *SB = llvm::MemoryBuffer::getSTDIN(); |
| SourceMgr.createMainFileIDForMemBuffer(SB); |
| if (SourceMgr.getMainFileID().isInvalid()) { |
| PP.getDiagnostics().Report(diag::err_fe_error_reading_stdin); |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Preprocessor construction |
| //===----------------------------------------------------------------------===// |
| |
| std::string GetBuiltinIncludePath(const char *Argv0) { |
| llvm::sys::Path P = |
| llvm::sys::Path::GetMainExecutable(Argv0, |
| (void*)(intptr_t) GetBuiltinIncludePath); |
| |
| if (!P.isEmpty()) { |
| P.eraseComponent(); // Remove /clang from foo/bin/clang |
| P.eraseComponent(); // Remove /bin from foo/bin |
| |
| // Get foo/lib/clang/<version>/include |
| P.appendComponent("lib"); |
| P.appendComponent("clang"); |
| P.appendComponent(CLANG_VERSION_STRING); |
| P.appendComponent("include"); |
| } |
| |
| return P.str(); |
| } |
| |
| static Preprocessor * |
| CreatePreprocessor(Diagnostic &Diags, const LangOptions &LangInfo, |
| const PreprocessorOptions &PPOpts, |
| const HeaderSearchOptions &HSOpts, |
| const DependencyOutputOptions &DepOpts, |
| TargetInfo &Target, SourceManager &SourceMgr, |
| FileManager &FileMgr) { |
| // Create a PTH manager if we are using some form of a token cache. |
| PTHManager *PTHMgr = 0; |
| if (!PPOpts.getTokenCache().empty()) |
| PTHMgr = PTHManager::Create(PPOpts.getTokenCache(), Diags); |
| |
| // FIXME: Don't fail like this. |
| if (Diags.hasErrorOccurred()) |
| exit(1); |
| |
| // Create the Preprocessor. |
| HeaderSearch *HeaderInfo = new HeaderSearch(FileMgr); |
| Preprocessor *PP = new Preprocessor(Diags, LangInfo, Target, |
| SourceMgr, *HeaderInfo, PTHMgr, |
| /*OwnsHeaderSearch=*/true); |
| |
| // Note that this is different then passing PTHMgr to Preprocessor's ctor. |
| // That argument is used as the IdentifierInfoLookup argument to |
| // IdentifierTable's ctor. |
| if (PTHMgr) { |
| PTHMgr->setPreprocessor(PP); |
| PP->setPTHManager(PTHMgr); |
| } |
| |
| InitializePreprocessor(*PP, PPOpts, HSOpts); |
| |
| // Handle generating dependencies, if requested. |
| if (!DepOpts.OutputFile.empty()) |
| AttachDependencyFileGen(*PP, DepOpts); |
| |
| return PP; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Basic Parser driver |
| //===----------------------------------------------------------------------===// |
| |
| static void ParseFile(Preprocessor &PP, MinimalAction *PA) { |
| Parser P(PP, *PA); |
| PP.EnterMainSourceFile(); |
| |
| // Parsing the specified input file. |
| P.ParseTranslationUnit(); |
| delete PA; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Dump Build Information |
| //===----------------------------------------------------------------------===// |
| |
| static void SetUpBuildDumpLog(const DiagnosticOptions &DiagOpts, |
| unsigned argc, char **argv, |
| llvm::OwningPtr<DiagnosticClient> &DiagClient) { |
| std::string ErrorInfo; |
| llvm::raw_ostream *OS = |
| new llvm::raw_fd_ostream(DiagOpts.DumpBuildInformation.c_str(), ErrorInfo); |
| if (!ErrorInfo.empty()) { |
| llvm::errs() << "error opening -dump-build-information file '" |
| << DiagOpts.DumpBuildInformation << "', option ignored!\n"; |
| delete OS; |
| return; |
| } |
| |
| (*OS) << "clang-cc command line arguments: "; |
| for (unsigned i = 0; i != argc; ++i) |
| (*OS) << argv[i] << ' '; |
| (*OS) << '\n'; |
| |
| // Chain in a diagnostic client which will log the diagnostics. |
| DiagnosticClient *Logger = |
| new TextDiagnosticPrinter(*OS, DiagOpts, /*OwnsOutputStream=*/true); |
| DiagClient.reset(new ChainedDiagnosticClient(DiagClient.take(), Logger)); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Main driver |
| //===----------------------------------------------------------------------===// |
| |
| /// ClangFrontendTimer - The front-end activities should charge time to it with |
| /// TimeRegion. The -ftime-report option controls whether this will do |
| /// anything. |
| llvm::Timer *ClangFrontendTimer = 0; |
| |
| static llvm::raw_ostream *ComputeOutFile(const CompilerInvocation &CompOpts, |
| const std::string &InFile, |
| const char *Extension, |
| bool Binary, |
| llvm::sys::Path& OutPath) { |
| llvm::raw_ostream *Ret; |
| std::string OutFile; |
| if (!CompOpts.getFrontendOpts().OutputFile.empty()) |
| OutFile = CompOpts.getFrontendOpts().OutputFile; |
| else if (InFile == "-") { |
| OutFile = "-"; |
| } else if (Extension) { |
| llvm::sys::Path Path(InFile); |
| Path.eraseSuffix(); |
| Path.appendSuffix(Extension); |
| OutFile = Path.str(); |
| } else { |
| OutFile = "-"; |
| } |
| |
| std::string Error; |
| Ret = new llvm::raw_fd_ostream(OutFile.c_str(), Error, |
| (Binary ? llvm::raw_fd_ostream::F_Binary : 0)); |
| if (!Error.empty()) { |
| // FIXME: Don't fail this way. |
| llvm::errs() << "ERROR: " << Error << "\n"; |
| ::exit(1); |
| } |
| |
| if (OutFile != "-") |
| OutPath = OutFile; |
| |
| return Ret; |
| } |
| |
| /// AddFixItLocations - Add any individual user specified "fix-it" locations, |
| /// and return true on success (if any were added). |
| static bool AddFixItLocations(FixItRewriter *FixItRewrite, |
| FileManager &FileMgr) { |
| bool AddedFixItLocation = false; |
| |
| for (unsigned i = 0, e = FixItAtLocations.size(); i != e; ++i) { |
| if (const FileEntry *File = FileMgr.getFile(FixItAtLocations[i].FileName)) { |
| RequestedSourceLocation Requested; |
| Requested.File = File; |
| Requested.Line = FixItAtLocations[i].Line; |
| Requested.Column = FixItAtLocations[i].Column; |
| FixItRewrite->addFixItLocation(Requested); |
| AddedFixItLocation = true; |
| } else { |
| llvm::errs() << "FIX-IT could not find file \"" |
| << FixItAtLocations[i].FileName << "\"\n"; |
| } |
| } |
| |
| return AddedFixItLocation; |
| } |
| |
| static ASTConsumer *CreateConsumerAction(const CompilerInvocation &CompOpts, |
| Preprocessor &PP, |
| const std::string &InFile, |
| ProgActions PA, |
| llvm::OwningPtr<llvm::raw_ostream> &OS, |
| llvm::sys::Path &OutPath, |
| llvm::LLVMContext& Context) { |
| const FrontendOptions &FEOpts = CompOpts.getFrontendOpts(); |
| |
| switch (PA) { |
| default: |
| return 0; |
| |
| case ASTPrint: |
| OS.reset(ComputeOutFile(CompOpts, InFile, 0, false, OutPath)); |
| return CreateASTPrinter(OS.get()); |
| |
| case ASTPrintXML: |
| OS.reset(ComputeOutFile(CompOpts, InFile, "xml", false, OutPath)); |
| return CreateASTPrinterXML(OS.get()); |
| |
| case ASTDump: |
| return CreateASTDumper(); |
| |
| case ASTView: |
| return CreateASTViewer(); |
| |
| case DumpRecordLayouts: |
| return CreateRecordLayoutDumper(); |
| |
| case InheritanceView: |
| return CreateInheritanceViewer(FEOpts.ViewClassInheritance); |
| |
| case EmitAssembly: |
| case EmitLLVM: |
| case EmitBC: |
| case EmitLLVMOnly: { |
| BackendAction Act; |
| if (ProgAction == EmitAssembly) { |
| Act = Backend_EmitAssembly; |
| OS.reset(ComputeOutFile(CompOpts, InFile, "s", true, OutPath)); |
| } else if (ProgAction == EmitLLVM) { |
| Act = Backend_EmitLL; |
| OS.reset(ComputeOutFile(CompOpts, InFile, "ll", true, OutPath)); |
| } else if (ProgAction == EmitLLVMOnly) { |
| Act = Backend_EmitNothing; |
| } else { |
| Act = Backend_EmitBC; |
| OS.reset(ComputeOutFile(CompOpts, InFile, "bc", true, OutPath)); |
| } |
| |
| // Fix-its can change semantics, disallow with any IRgen action. |
| if (FEOpts.FixItAll || !FixItAtLocations.empty()) { |
| PP.getDiagnostics().Report(diag::err_fe_no_fixit_and_codegen); |
| return 0; |
| } |
| |
| return CreateBackendConsumer(Act, PP.getDiagnostics(), PP.getLangOptions(), |
| CompOpts.getCodeGenOpts(), InFile, OS.get(), |
| Context); |
| } |
| |
| case RewriteObjC: |
| OS.reset(ComputeOutFile(CompOpts, InFile, "cpp", true, OutPath)); |
| return CreateObjCRewriter(InFile, OS.get(), PP.getDiagnostics(), |
| PP.getLangOptions(), |
| CompOpts.getDiagnosticOpts().NoRewriteMacros); |
| |
| case RewriteBlocks: |
| return CreateBlockRewriter(InFile, PP.getDiagnostics(), |
| PP.getLangOptions()); |
| |
| case ParseSyntaxOnly: |
| return new ASTConsumer(); |
| |
| case PrintDeclContext: |
| return CreateDeclContextPrinter(); |
| } |
| } |
| |
| /// ReadPCHFile - Load a PCH file from disk, and initialize the preprocessor for |
| /// reading from the PCH file. |
| /// |
| /// \return The AST source, or null on failure. |
| static ExternalASTSource *ReadPCHFile(llvm::StringRef Path, |
| const CompilerInvocation &CompOpts, |
| Preprocessor &PP, |
| ASTContext &Context) { |
| // If the user specified -isysroot, it will be used for relocatable PCH files. |
| const char *isysrootPCH = CompOpts.getHeaderSearchOpts().Sysroot.c_str(); |
| if (isysrootPCH[0] == '\0') |
| isysrootPCH = 0; |
| |
| llvm::OwningPtr<PCHReader> Reader; |
| Reader.reset(new PCHReader(PP, &Context, isysrootPCH)); |
| |
| switch (Reader->ReadPCH(Path)) { |
| case PCHReader::Success: |
| // Set the predefines buffer as suggested by the PCH reader. Typically, the |
| // predefines buffer will be empty. |
| PP.setPredefines(Reader->getSuggestedPredefines()); |
| return Reader.take(); |
| |
| case PCHReader::Failure: |
| // Unrecoverable failure: don't even try to process the input file. |
| break; |
| |
| case PCHReader::IgnorePCH: |
| // No suitable PCH file could be found. Return an error. |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /// ProcessInputFile - Process a single input file with the specified state. |
| /// |
| static void ProcessInputFile(const CompilerInvocation &CompOpts, |
| Preprocessor &PP, const std::string &InFile, |
| ProgActions PA, llvm::LLVMContext& Context) { |
| const FrontendOptions &FEOpts = CompOpts.getFrontendOpts(); |
| llvm::OwningPtr<llvm::raw_ostream> OS; |
| llvm::OwningPtr<ASTConsumer> Consumer; |
| FixItRewriter *FixItRewrite = 0; |
| bool CompleteTranslationUnit = true; |
| llvm::sys::Path OutPath; |
| |
| switch (PA) { |
| default: |
| Consumer.reset(CreateConsumerAction(CompOpts, PP, InFile, PA, OS, OutPath, |
| Context)); |
| if (!Consumer.get()) { |
| PP.getDiagnostics().Report(diag::err_fe_invalid_ast_action); |
| return; |
| } |
| break; |
| |
| case EmitHTML: |
| OS.reset(ComputeOutFile(CompOpts, InFile, 0, true, OutPath)); |
| Consumer.reset(CreateHTMLPrinter(OS.get(), PP)); |
| break; |
| |
| case RunAnalysis: |
| Consumer.reset(CreateAnalysisConsumer(PP, FEOpts.OutputFile, |
| CompOpts.getAnalyzerOpts())); |
| break; |
| |
| case GeneratePCH: { |
| const std::string &Sysroot = CompOpts.getHeaderSearchOpts().Sysroot; |
| bool Relocatable = FEOpts.RelocatablePCH; |
| if (Relocatable && Sysroot.empty()) { |
| PP.Diag(SourceLocation(), diag::err_relocatable_without_without_isysroot); |
| Relocatable = false; |
| } |
| |
| OS.reset(ComputeOutFile(CompOpts, InFile, 0, true, OutPath)); |
| if (Relocatable) |
| Consumer.reset(CreatePCHGenerator(PP, OS.get(), Sysroot.c_str())); |
| else |
| Consumer.reset(CreatePCHGenerator(PP, OS.get())); |
| CompleteTranslationUnit = false; |
| break; |
| } |
| |
| // Do any necessary set up for non-consumer actions. |
| case DumpRawTokens: |
| case DumpTokens: |
| case RunPreprocessorOnly: |
| case ParseNoop: |
| break; // No setup. |
| |
| case GeneratePTH: |
| if (FEOpts.OutputFile.empty() || FEOpts.OutputFile == "-") { |
| // FIXME: Don't fail this way. |
| // FIXME: Verify that we can actually seek in the given file. |
| llvm::errs() << "ERROR: PTH requires an seekable file for output!\n"; |
| ::exit(1); |
| } |
| OS.reset(ComputeOutFile(CompOpts, InFile, 0, true, OutPath)); |
| break; |
| |
| case PrintPreprocessedInput: |
| case ParsePrintCallbacks: |
| case RewriteMacros: |
| case RewriteTest: |
| OS.reset(ComputeOutFile(CompOpts, InFile, 0, true, OutPath)); |
| break; |
| } |
| |
| // Check if we want a fix-it rewriter. |
| if (FEOpts.FixItAll || !FixItAtLocations.empty()) { |
| FixItRewrite = new FixItRewriter(PP.getDiagnostics(), |
| PP.getSourceManager(), |
| PP.getLangOptions()); |
| if (!FixItAtLocations.empty() && |
| !AddFixItLocations(FixItRewrite, PP.getFileManager())) { |
| // All of the fix-it locations were bad. Don't fix anything. |
| delete FixItRewrite; |
| FixItRewrite = 0; |
| } |
| } |
| |
| llvm::OwningPtr<ASTContext> ContextOwner; |
| llvm::OwningPtr<ExternalASTSource> Source; |
| const std::string &ImplicitPCHInclude = |
| CompOpts.getPreprocessorOpts().getImplicitPCHInclude(); |
| if (Consumer) { |
| ContextOwner.reset(new ASTContext(PP.getLangOptions(), |
| PP.getSourceManager(), |
| PP.getTargetInfo(), |
| PP.getIdentifierTable(), |
| PP.getSelectorTable(), |
| PP.getBuiltinInfo(), |
| /* FreeMemory = */ !FEOpts.DisableFree, |
| /* size_reserve = */0)); |
| |
| if (!ImplicitPCHInclude.empty()) { |
| Source.reset(ReadPCHFile(ImplicitPCHInclude, CompOpts, PP, |
| *ContextOwner)); |
| if (!Source) |
| return; |
| |
| // Attach the PCH reader to the AST context as an external AST source, so |
| // that declarations will be deserialized from the PCH file as needed. |
| ContextOwner->setExternalSource(Source); |
| } else { |
| // Initialize builtin info when not using PCH. |
| PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(), |
| PP.getLangOptions().NoBuiltin); |
| } |
| |
| // Initialize the main file entry. This needs to be delayed until after PCH |
| // has loaded. |
| if (InitializeSourceManager(PP, CompOpts.getFrontendOpts(), InFile)) |
| return; |
| |
| CodeCompleteConsumer *(*CreateCodeCompleter)(Sema &, void *) = 0; |
| void *CreateCodeCompleterData = 0; |
| |
| if (!CodeCompletionAt.FileName.empty()) { |
| // Tell the source manager to chop off the given file at a specific |
| // line and column. |
| if (const FileEntry *Entry |
| = PP.getFileManager().getFile(CodeCompletionAt.FileName)) { |
| // Truncate the named file at the given line/column. |
| PP.getSourceManager().truncateFileAt(Entry, CodeCompletionAt.Line, |
| CodeCompletionAt.Column); |
| |
| // Set up the creation routine for code-completion. |
| CreateCodeCompleter = BuildPrintingCodeCompleter; |
| } else { |
| PP.getDiagnostics().Report(diag::err_fe_invalid_code_complete_file) |
| << CodeCompletionAt.FileName; |
| } |
| } |
| |
| // Run the AST consumer action. |
| ParseAST(PP, Consumer.get(), *ContextOwner.get(), FEOpts.ShowStats, |
| CompleteTranslationUnit, |
| CreateCodeCompleter, CreateCodeCompleterData); |
| } else { |
| // Initialize builtin info. |
| PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(), |
| PP.getLangOptions().NoBuiltin); |
| |
| // Initialize the main file entry. This needs to be delayed until after PCH |
| // has loaded. |
| if (InitializeSourceManager(PP, CompOpts.getFrontendOpts(), InFile)) |
| return; |
| |
| // Run the preprocessor actions. |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| switch (PA) { |
| default: |
| assert(0 && "unexpected program action"); |
| |
| case DumpRawTokens: { |
| SourceManager &SM = PP.getSourceManager(); |
| // Start lexing the specified input file. |
| Lexer RawLex(SM.getMainFileID(), SM, PP.getLangOptions()); |
| RawLex.SetKeepWhitespaceMode(true); |
| |
| Token RawTok; |
| RawLex.LexFromRawLexer(RawTok); |
| while (RawTok.isNot(tok::eof)) { |
| PP.DumpToken(RawTok, true); |
| fprintf(stderr, "\n"); |
| RawLex.LexFromRawLexer(RawTok); |
| } |
| break; |
| } |
| |
| case DumpTokens: { |
| Token Tok; |
| // Start preprocessing the specified input file. |
| PP.EnterMainSourceFile(); |
| do { |
| PP.Lex(Tok); |
| PP.DumpToken(Tok, true); |
| fprintf(stderr, "\n"); |
| } while (Tok.isNot(tok::eof)); |
| break; |
| } |
| |
| case GeneratePTH: |
| CacheTokens(PP, static_cast<llvm::raw_fd_ostream*>(OS.get())); |
| break; |
| |
| case ParseNoop: |
| ParseFile(PP, new MinimalAction(PP)); |
| break; |
| |
| case ParsePrintCallbacks: |
| ParseFile(PP, CreatePrintParserActionsAction(PP, OS.get())); |
| break; |
| |
| case PrintPreprocessedInput: |
| DoPrintPreprocessedInput(PP, OS.get(), |
| CompOpts.getPreprocessorOutputOpts()); |
| break; |
| |
| case RewriteMacros: |
| RewriteMacrosInInput(PP, OS.get()); |
| break; |
| |
| case RewriteTest: |
| DoRewriteTest(PP, OS.get()); |
| break; |
| |
| case RunPreprocessorOnly: { // Just lex as fast as we can, no output. |
| Token Tok; |
| // Start parsing the specified input file. |
| PP.EnterMainSourceFile(); |
| do { |
| PP.Lex(Tok); |
| } while (Tok.isNot(tok::eof)); |
| break; |
| } |
| } |
| } |
| |
| if (FixItRewrite) |
| FixItRewrite->WriteFixedFile(InFile, FEOpts.OutputFile); |
| |
| // Release the consumer and the AST, in that order since the consumer may |
| // perform actions in its destructor which require the context. |
| if (FEOpts.DisableFree) { |
| Consumer.take(); |
| ContextOwner.take(); |
| } else { |
| Consumer.reset(); |
| ContextOwner.reset(); |
| } |
| |
| if (CompOpts.getDiagnosticOpts().VerifyDiagnostics) |
| if (CheckDiagnostics(PP)) |
| exit(1); |
| |
| if (FEOpts.ShowStats) { |
| fprintf(stderr, "\nSTATISTICS FOR '%s':\n", InFile.c_str()); |
| PP.PrintStats(); |
| PP.getIdentifierTable().PrintStats(); |
| PP.getHeaderSearchInfo().PrintStats(); |
| PP.getSourceManager().PrintStats(); |
| fprintf(stderr, "\n"); |
| } |
| |
| // Always delete the output stream because we don't want to leak file |
| // handles. Also, we don't want to try to erase an open file. |
| OS.reset(); |
| |
| // If we had errors, try to erase the output file. |
| if (PP.getDiagnostics().getNumErrors() && !OutPath.isEmpty()) |
| OutPath.eraseFromDisk(); |
| } |
| |
| /// ProcessInputFile - Process a single AST input file with the specified state. |
| /// |
| static void ProcessASTInputFile(const CompilerInvocation &CompOpts, |
| const std::string &InFile, ProgActions PA, |
| Diagnostic &Diags, FileManager &FileMgr, |
| llvm::LLVMContext& Context) { |
| const FrontendOptions &FEOpts = CompOpts.getFrontendOpts(); |
| std::string Error; |
| llvm::OwningPtr<ASTUnit> AST(ASTUnit::LoadFromPCHFile(InFile, &Error)); |
| if (!AST) { |
| Diags.Report(diag::err_fe_invalid_ast_file) << Error; |
| return; |
| } |
| |
| Preprocessor &PP = AST->getPreprocessor(); |
| |
| llvm::OwningPtr<llvm::raw_ostream> OS; |
| llvm::sys::Path OutPath; |
| llvm::OwningPtr<ASTConsumer> Consumer(CreateConsumerAction(CompOpts, PP, |
| InFile, PA, OS, |
| OutPath, Context)); |
| if (!Consumer.get()) { |
| Diags.Report(diag::err_fe_invalid_ast_action); |
| return; |
| } |
| |
| // Set the main file ID to an empty file. |
| // |
| // FIXME: We probably shouldn't need this, but for now this is the simplest |
| // way to reuse the logic in ParseAST. |
| const char *EmptyStr = ""; |
| llvm::MemoryBuffer *SB = |
| llvm::MemoryBuffer::getMemBuffer(EmptyStr, EmptyStr, "<dummy input>"); |
| AST->getSourceManager().createMainFileIDForMemBuffer(SB); |
| |
| // Stream the input AST to the consumer. |
| Diags.getClient()->BeginSourceFile(PP.getLangOptions()); |
| ParseAST(PP, Consumer.get(), AST->getASTContext(), FEOpts.ShowStats); |
| Diags.getClient()->EndSourceFile(); |
| |
| // Release the consumer and the AST, in that order since the consumer may |
| // perform actions in its destructor which require the context. |
| if (FEOpts.DisableFree) { |
| Consumer.take(); |
| AST.take(); |
| } else { |
| Consumer.reset(); |
| AST.reset(); |
| } |
| |
| // Always delete the output stream because we don't want to leak file |
| // handles. Also, we don't want to try to erase an open file. |
| OS.reset(); |
| |
| // If we had errors, try to erase the output file. |
| if (PP.getDiagnostics().getNumErrors() && !OutPath.isEmpty()) |
| OutPath.eraseFromDisk(); |
| } |
| |
| static void LLVMErrorHandler(void *UserData, const std::string &Message) { |
| Diagnostic &Diags = *static_cast<Diagnostic*>(UserData); |
| |
| Diags.Report(diag::err_fe_error_backend) << Message; |
| |
| // We cannot recover from llvm errors. |
| exit(1); |
| } |
| |
| static LangKind GetLanguage(const std::vector<std::string> &Inputs) { |
| // If -x was given, that's the language. |
| if (BaseLang != langkind_unspecified) |
| return BaseLang; |
| |
| // Otherwise guess it from the input filenames; |
| LangKind LK = langkind_unspecified; |
| for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { |
| llvm::StringRef Name(Inputs[i]); |
| LangKind ThisKind = llvm::StringSwitch<LangKind>(Name.rsplit('.').second) |
| .Case("ast", langkind_ast) |
| .Case("c", langkind_c) |
| .Cases("S", "s", langkind_asm_cpp) |
| .Case("i", langkind_c_cpp) |
| .Case("ii", langkind_cxx_cpp) |
| .Case("m", langkind_objc) |
| .Case("mi", langkind_objc_cpp) |
| .Cases("mm", "M", langkind_objcxx) |
| .Case("mii", langkind_objcxx_cpp) |
| .Case("C", langkind_cxx) |
| .Cases("C", "cc", "cp", langkind_cxx) |
| .Cases("cpp", "CPP", "c++", "cxx", langkind_cxx) |
| .Case("cl", langkind_ocl) |
| .Default(langkind_c); |
| |
| if (LK != langkind_unspecified && ThisKind != LK) { |
| llvm::errs() << "error: cannot have multiple input files of distinct " |
| << "language kinds without -x\n"; |
| exit(1); |
| } |
| |
| LK = ThisKind; |
| } |
| |
| return LK; |
| } |
| |
| static void ConstructCompilerInvocation(CompilerInvocation &Opts, |
| const char *Argv0, |
| const DiagnosticOptions &DiagOpts, |
| TargetInfo &Target, |
| bool &IsAST) { |
| Opts.getDiagnosticOpts() = DiagOpts; |
| |
| // Initialize frontend options. |
| InitializeFrontendOptions(Opts.getFrontendOpts()); |
| |
| // Initialize backend options, which may also be used to key some language |
| // options. |
| InitializeCodeGenOptions(Opts.getCodeGenOpts(), Target); |
| |
| // Initialize language options. |
| // |
| // FIXME: These aren't used during operations on ASTs. Split onto a separate |
| // code path to make this obvious. |
| LangKind LK = GetLanguage(Opts.getFrontendOpts().InputFilenames); |
| IsAST = LK == langkind_ast; |
| if (!IsAST) |
| InitializeLangOptions(Opts.getLangOpts(), LK, Target, |
| Opts.getCodeGenOpts()); |
| |
| // Initialize the static analyzer options. |
| InitializeAnalyzerOptions(Opts.getAnalyzerOpts()); |
| |
| // Initialize the dependency output options (-M...). |
| InitializeDependencyOutputOptions(Opts.getDependencyOutputOpts()); |
| |
| // Initialize the header search options. |
| InitializeHeaderSearchOptions(Opts.getHeaderSearchOpts(), |
| GetBuiltinIncludePath(Argv0), |
| Verbose, |
| Opts.getLangOpts()); |
| |
| // Initialize the other preprocessor options. |
| InitializePreprocessorOptions(Opts.getPreprocessorOpts()); |
| |
| // Initialize the preprocessed output options. |
| InitializePreprocessorOutputOptions(Opts.getPreprocessorOutputOpts()); |
| |
| // Finalize some code generation options which are derived from other places. |
| if (Opts.getLangOpts().NoBuiltin) |
| Opts.getCodeGenOpts().SimplifyLibCalls = 0; |
| if (Opts.getLangOpts().CPlusPlus) |
| Opts.getCodeGenOpts().NoCommon = 1; |
| Opts.getCodeGenOpts().TimePasses = Opts.getFrontendOpts().ShowTimers; |
| } |
| |
| static Diagnostic *CreateDiagnosticEngine(const DiagnosticOptions &Opts, |
| int argc, char **argv) { |
| // Create the diagnostic client for reporting errors or for |
| // implementing -verify. |
| llvm::OwningPtr<DiagnosticClient> DiagClient; |
| if (Opts.VerifyDiagnostics) { |
| // When checking diagnostics, just buffer them up. |
| DiagClient.reset(new TextDiagnosticBuffer()); |
| } else { |
| DiagClient.reset(new TextDiagnosticPrinter(llvm::errs(), Opts)); |
| } |
| |
| if (!Opts.DumpBuildInformation.empty()) |
| SetUpBuildDumpLog(Opts, argc, argv, DiagClient); |
| |
| // Configure our handling of diagnostics. |
| Diagnostic *Diags = new Diagnostic(DiagClient.take()); |
| if (ProcessWarningOptions(*Diags, Opts)) |
| return 0; |
| |
| // Set an error handler, so that any LLVM backend diagnostics go through our |
| // error handler. |
| llvm::llvm_install_error_handler(LLVMErrorHandler, |
| static_cast<void*>(Diags)); |
| |
| return Diags; |
| } |
| |
| int main(int argc, char **argv) { |
| llvm::sys::PrintStackTraceOnErrorSignal(); |
| llvm::PrettyStackTraceProgram X(argc, argv); |
| llvm::LLVMContext &Context = llvm::getGlobalContext(); |
| |
| // Initialize targets first, so that --version shows registered targets. |
| llvm::InitializeAllTargets(); |
| llvm::InitializeAllAsmPrinters(); |
| |
| llvm::cl::ParseCommandLineOptions(argc, argv, |
| "LLVM 'Clang' Compiler: http://clang.llvm.org\n"); |
| |
| if (Verbose) |
| llvm::errs() << "clang-cc version " CLANG_VERSION_STRING |
| << " based upon " << PACKAGE_STRING |
| << " hosted on " << llvm::sys::getHostTriple() << "\n"; |
| |
| // Construct the diagnostic engine first, so that we can build a diagnostic |
| // client to use for any errors during option handling. |
| DiagnosticOptions DiagOpts; |
| InitializeDiagnosticOptions(DiagOpts); |
| llvm::OwningPtr<Diagnostic> |
| Diags(CreateDiagnosticEngine(DiagOpts, argc, argv)); |
| if (!Diags) |
| return 1; |
| |
| // FIXME: Hack to make sure we release the diagnostic client, the engine |
| // should (optionally?) take ownership of it. |
| llvm::OwningPtr<DiagnosticClient> DiagClient(Diags->getClient()); |
| |
| // Initialize base triple. If a -triple option has been specified, use |
| // that triple. Otherwise, default to the host triple. |
| llvm::Triple Triple(TargetTriple); |
| if (Triple.getTriple().empty()) |
| Triple = llvm::Triple(llvm::sys::getHostTriple()); |
| |
| // Get information about the target being compiled for. |
| llvm::OwningPtr<TargetInfo> |
| Target(TargetInfo::CreateTargetInfo(Triple.getTriple())); |
| if (Target == 0) { |
| Diags->Report(diag::err_fe_unknown_triple) << Triple.getTriple().c_str(); |
| return 1; |
| } |
| |
| // Set the target ABI if specified. |
| if (!TargetABI.empty() &&!Target->setABI(TargetABI)) { |
| Diags->Report(diag::err_fe_unknown_target_abi) << TargetABI; |
| return 1; |
| } |
| |
| // Now that we have initialized the diagnostics engine and the target, finish |
| // setting up the compiler invocation. |
| // |
| // FIXME: We should move .ast inputs to taking a separate path, they are |
| // really quite different. |
| CompilerInvocation CompOpts; |
| bool IsAST; |
| ConstructCompilerInvocation(CompOpts, argv[0], DiagOpts, *Target, IsAST); |
| |
| // Validate some options. |
| if (CompOpts.getFrontendOpts().ShowTimers) |
| ClangFrontendTimer = new llvm::Timer("Clang front-end time"); |
| |
| if (CompOpts.getDiagnosticOpts().VerifyDiagnostics && |
| CompOpts.getFrontendOpts().InputFilenames.size() > 1) { |
| fprintf(stderr, "-verify only works on single input files.\n"); |
| return 1; |
| } |
| |
| // C++ visualization? |
| if (!CompOpts.getFrontendOpts().ViewClassInheritance.empty()) |
| ProgAction = InheritanceView; |
| |
| // Create the source manager. |
| SourceManager SourceMgr; |
| |
| // Create a file manager object to provide access to and cache the filesystem. |
| FileManager FileMgr; |
| |
| for (unsigned i = 0, e = CompOpts.getFrontendOpts().InputFilenames.size(); |
| i != e; ++i) { |
| const std::string &InFile = CompOpts.getFrontendOpts().InputFilenames[i]; |
| |
| // AST inputs are handled specially. |
| if (IsAST) { |
| ProcessASTInputFile(CompOpts, InFile, ProgAction, *Diags, FileMgr, |
| Context); |
| continue; |
| } |
| |
| // Reset the ID tables if we are reusing the SourceManager. |
| if (i) |
| SourceMgr.clearIDTables(); |
| |
| // Set up the preprocessor with these options. |
| llvm::OwningPtr<Preprocessor> |
| PP(CreatePreprocessor(*Diags, CompOpts.getLangOpts(), |
| CompOpts.getPreprocessorOpts(), |
| CompOpts.getHeaderSearchOpts(), |
| CompOpts.getDependencyOutputOpts(), |
| *Target, SourceMgr, FileMgr)); |
| |
| // Process the source file. |
| Diags->getClient()->BeginSourceFile(CompOpts.getLangOpts()); |
| ProcessInputFile(CompOpts, *PP, InFile, ProgAction, Context); |
| Diags->getClient()->EndSourceFile(); |
| } |
| |
| if (CompOpts.getDiagnosticOpts().ShowCarets) |
| if (unsigned NumDiagnostics = Diags->getNumDiagnostics()) |
| fprintf(stderr, "%d diagnostic%s generated.\n", NumDiagnostics, |
| (NumDiagnostics == 1 ? "" : "s")); |
| |
| if (CompOpts.getFrontendOpts().ShowStats) { |
| FileMgr.PrintStats(); |
| fprintf(stderr, "\n"); |
| } |
| |
| delete ClangFrontendTimer; |
| |
| // If verifying diagnostics and we reached here, all is well. |
| if (CompOpts.getDiagnosticOpts().VerifyDiagnostics) |
| return 0; |
| |
| // Managed static deconstruction. Useful for making things like |
| // -time-passes usable. |
| llvm::llvm_shutdown(); |
| |
| return (Diags->getNumErrors() != 0); |
| } |