forked from OSchip/llvm-project
416 lines
14 KiB
C++
416 lines
14 KiB
C++
//===--- CompilerInstance.cpp ---------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/Basic/Diagnostic.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Lex/HeaderSearch.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Lex/PTHManager.h"
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#include "clang/Frontend/ChainedDiagnosticClient.h"
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#include "clang/Frontend/PCHReader.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/TextDiagnosticPrinter.h"
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#include "clang/Frontend/VerifyDiagnosticsClient.h"
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#include "clang/Frontend/Utils.h"
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#include "clang/Sema/CodeCompleteConsumer.h"
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#include "llvm/LLVMContext.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/Timer.h"
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#include "llvm/System/Path.h"
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#include "llvm/System/Program.h"
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using namespace clang;
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CompilerInstance::CompilerInstance(llvm::LLVMContext *_LLVMContext,
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bool _OwnsLLVMContext)
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: LLVMContext(_LLVMContext),
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OwnsLLVMContext(_OwnsLLVMContext) {
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}
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CompilerInstance::~CompilerInstance() {
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if (OwnsLLVMContext)
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delete LLVMContext;
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}
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void CompilerInstance::setDiagnostics(Diagnostic *Value) {
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Diagnostics.reset(Value);
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}
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void CompilerInstance::setDiagnosticClient(DiagnosticClient *Value) {
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DiagClient.reset(Value);
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}
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void CompilerInstance::setTarget(TargetInfo *Value) {
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Target.reset(Value);
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}
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void CompilerInstance::setFileManager(FileManager *Value) {
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FileMgr.reset(Value);
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}
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void CompilerInstance::setSourceManager(SourceManager *Value) {
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SourceMgr.reset(Value);
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}
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void CompilerInstance::setPreprocessor(Preprocessor *Value) {
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PP.reset(Value);
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}
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void CompilerInstance::setASTContext(ASTContext *Value) {
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Context.reset(Value);
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}
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void CompilerInstance::setASTConsumer(ASTConsumer *Value) {
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Consumer.reset(Value);
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}
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void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) {
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CompletionConsumer.reset(Value);
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}
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// Diagnostics
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static void SetUpBuildDumpLog(const DiagnosticOptions &DiagOpts,
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unsigned argc, char **argv,
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llvm::OwningPtr<DiagnosticClient> &DiagClient) {
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std::string ErrorInfo;
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llvm::raw_ostream *OS =
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new llvm::raw_fd_ostream(DiagOpts.DumpBuildInformation.c_str(), ErrorInfo);
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if (!ErrorInfo.empty()) {
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// FIXME: Do not fail like this.
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llvm::errs() << "error opening -dump-build-information file '"
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<< DiagOpts.DumpBuildInformation << "', option ignored!\n";
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delete OS;
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return;
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}
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(*OS) << "clang-cc command line arguments: ";
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for (unsigned i = 0; i != argc; ++i)
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(*OS) << argv[i] << ' ';
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(*OS) << '\n';
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// Chain in a diagnostic client which will log the diagnostics.
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DiagnosticClient *Logger =
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new TextDiagnosticPrinter(*OS, DiagOpts, /*OwnsOutputStream=*/true);
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DiagClient.reset(new ChainedDiagnosticClient(DiagClient.take(), Logger));
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}
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void CompilerInstance::createDiagnostics(int Argc, char **Argv) {
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Diagnostics.reset(createDiagnostics(getDiagnosticOpts(), Argc, Argv));
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if (Diagnostics)
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DiagClient.reset(Diagnostics->getClient());
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}
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Diagnostic *CompilerInstance::createDiagnostics(const DiagnosticOptions &Opts,
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int Argc, char **Argv) {
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llvm::OwningPtr<Diagnostic> Diags(new Diagnostic());
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// Create the diagnostic client for reporting errors or for
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// implementing -verify.
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llvm::OwningPtr<DiagnosticClient> DiagClient(
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new TextDiagnosticPrinter(llvm::errs(), Opts));
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// Chain in -verify checker, if requested.
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if (Opts.VerifyDiagnostics)
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DiagClient.reset(new VerifyDiagnosticsClient(*Diags, DiagClient.take()));
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if (!Opts.DumpBuildInformation.empty())
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SetUpBuildDumpLog(Opts, Argc, Argv, DiagClient);
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// Configure our handling of diagnostics.
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Diags->setClient(DiagClient.take());
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if (ProcessWarningOptions(*Diags, Opts))
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return 0;
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return Diags.take();
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}
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// File Manager
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void CompilerInstance::createFileManager() {
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FileMgr.reset(new FileManager());
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}
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// Source Manager
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void CompilerInstance::createSourceManager() {
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SourceMgr.reset(new SourceManager());
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}
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// Preprocessor
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void CompilerInstance::createPreprocessor() {
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PP.reset(createPreprocessor(getDiagnostics(), getLangOpts(),
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getPreprocessorOpts(), getHeaderSearchOpts(),
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getDependencyOutputOpts(), getTarget(),
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getSourceManager(), getFileManager()));
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}
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Preprocessor *
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CompilerInstance::createPreprocessor(Diagnostic &Diags,
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const LangOptions &LangInfo,
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const PreprocessorOptions &PPOpts,
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const HeaderSearchOptions &HSOpts,
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const DependencyOutputOptions &DepOpts,
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const TargetInfo &Target,
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SourceManager &SourceMgr,
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FileManager &FileMgr) {
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// Create a PTH manager if we are using some form of a token cache.
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PTHManager *PTHMgr = 0;
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if (!PPOpts.TokenCache.empty())
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PTHMgr = PTHManager::Create(PPOpts.TokenCache, Diags);
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// FIXME: Don't fail like this.
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if (Diags.hasErrorOccurred())
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exit(1);
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// Create the Preprocessor.
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HeaderSearch *HeaderInfo = new HeaderSearch(FileMgr);
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Preprocessor *PP = new Preprocessor(Diags, LangInfo, Target,
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SourceMgr, *HeaderInfo, PTHMgr,
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/*OwnsHeaderSearch=*/true);
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// Note that this is different then passing PTHMgr to Preprocessor's ctor.
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// That argument is used as the IdentifierInfoLookup argument to
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// IdentifierTable's ctor.
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if (PTHMgr) {
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PTHMgr->setPreprocessor(PP);
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PP->setPTHManager(PTHMgr);
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}
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InitializePreprocessor(*PP, PPOpts, HSOpts);
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// Handle generating dependencies, if requested.
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if (!DepOpts.OutputFile.empty())
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AttachDependencyFileGen(*PP, DepOpts);
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return PP;
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}
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// ASTContext
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void CompilerInstance::createASTContext() {
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Preprocessor &PP = getPreprocessor();
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Context.reset(new ASTContext(getLangOpts(), PP.getSourceManager(),
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getTarget(), PP.getIdentifierTable(),
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PP.getSelectorTable(), PP.getBuiltinInfo(),
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/*FreeMemory=*/ !getFrontendOpts().DisableFree,
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/*size_reserve=*/ 0));
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}
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// ExternalASTSource
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void CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path) {
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llvm::OwningPtr<ExternalASTSource> Source;
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Source.reset(createPCHExternalASTSource(Path, getHeaderSearchOpts().Sysroot,
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getPreprocessor(), getASTContext()));
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getASTContext().setExternalSource(Source);
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}
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ExternalASTSource *
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CompilerInstance::createPCHExternalASTSource(llvm::StringRef Path,
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const std::string &Sysroot,
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Preprocessor &PP,
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ASTContext &Context) {
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llvm::OwningPtr<PCHReader> Reader;
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Reader.reset(new PCHReader(PP, &Context,
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Sysroot.empty() ? 0 : Sysroot.c_str()));
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switch (Reader->ReadPCH(Path)) {
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case PCHReader::Success:
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// Set the predefines buffer as suggested by the PCH reader. Typically, the
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// predefines buffer will be empty.
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PP.setPredefines(Reader->getSuggestedPredefines());
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return Reader.take();
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case PCHReader::Failure:
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// Unrecoverable failure: don't even try to process the input file.
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break;
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case PCHReader::IgnorePCH:
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// No suitable PCH file could be found. Return an error.
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break;
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}
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return 0;
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}
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// Code Completion
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void CompilerInstance::createCodeCompletionConsumer() {
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const ParsedSourceLocation &Loc = getFrontendOpts().CodeCompletionAt;
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CompletionConsumer.reset(
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createCodeCompletionConsumer(getPreprocessor(),
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Loc.FileName, Loc.Line, Loc.Column,
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getFrontendOpts().DebugCodeCompletionPrinter,
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getFrontendOpts().ShowMacrosInCodeCompletion,
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llvm::outs()));
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if (CompletionConsumer->isOutputBinary() &&
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llvm::sys::Program::ChangeStdoutToBinary()) {
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getPreprocessor().getDiagnostics().Report(diag::err_fe_stdout_binary);
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CompletionConsumer.reset();
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}
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}
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void CompilerInstance::createFrontendTimer() {
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FrontendTimer.reset(new llvm::Timer("Clang front-end timer"));
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}
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CodeCompleteConsumer *
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CompilerInstance::createCodeCompletionConsumer(Preprocessor &PP,
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const std::string &Filename,
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unsigned Line,
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unsigned Column,
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bool UseDebugPrinter,
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bool ShowMacros,
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llvm::raw_ostream &OS) {
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// Tell the source manager to chop off the given file at a specific
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// line and column.
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const FileEntry *Entry = PP.getFileManager().getFile(Filename);
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if (!Entry) {
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PP.getDiagnostics().Report(diag::err_fe_invalid_code_complete_file)
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<< Filename;
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return 0;
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}
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// Truncate the named file at the given line/column.
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PP.getSourceManager().truncateFileAt(Entry, Line, Column);
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// Set up the creation routine for code-completion.
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if (UseDebugPrinter)
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return new PrintingCodeCompleteConsumer(ShowMacros, OS);
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else
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return new CIndexCodeCompleteConsumer(ShowMacros, OS);
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}
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// Output Files
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void CompilerInstance::addOutputFile(llvm::StringRef Path,
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llvm::raw_ostream *OS) {
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assert(OS && "Attempt to add empty stream to output list!");
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OutputFiles.push_back(std::make_pair(Path, OS));
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}
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void CompilerInstance::ClearOutputFiles(bool EraseFiles) {
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for (std::list< std::pair<std::string, llvm::raw_ostream*> >::iterator
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it = OutputFiles.begin(), ie = OutputFiles.end(); it != ie; ++it) {
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delete it->second;
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if (EraseFiles && !it->first.empty())
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llvm::sys::Path(it->first).eraseFromDisk();
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}
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OutputFiles.clear();
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}
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llvm::raw_fd_ostream *
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CompilerInstance::createDefaultOutputFile(bool Binary,
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llvm::StringRef InFile,
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llvm::StringRef Extension) {
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return createOutputFile(getFrontendOpts().OutputFile, Binary,
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InFile, Extension);
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}
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llvm::raw_fd_ostream *
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CompilerInstance::createOutputFile(llvm::StringRef OutputPath,
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bool Binary,
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llvm::StringRef InFile,
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llvm::StringRef Extension) {
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std::string Error, OutputPathName;
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llvm::raw_fd_ostream *OS = createOutputFile(OutputPath, Error, Binary,
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InFile, Extension,
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&OutputPathName);
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if (!OS) {
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// FIXME: Don't fail this way.
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llvm::errs() << "error: " << Error << "\n";
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::exit(1);
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}
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// Add the output file -- but don't try to remove "-", since this means we are
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// using stdin.
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addOutputFile((OutputPathName != "-") ? OutputPathName : "", OS);
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return OS;
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}
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llvm::raw_fd_ostream *
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CompilerInstance::createOutputFile(llvm::StringRef OutputPath,
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std::string &Error,
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bool Binary,
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llvm::StringRef InFile,
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llvm::StringRef Extension,
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std::string *ResultPathName) {
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std::string OutFile;
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if (!OutputPath.empty()) {
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OutFile = OutputPath;
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} else if (InFile == "-") {
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OutFile = "-";
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} else if (!Extension.empty()) {
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llvm::sys::Path Path(InFile);
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Path.eraseSuffix();
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Path.appendSuffix(Extension);
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OutFile = Path.str();
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} else {
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OutFile = "-";
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}
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llvm::OwningPtr<llvm::raw_fd_ostream> OS(
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new llvm::raw_fd_ostream(OutFile.c_str(), Error,
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(Binary ? llvm::raw_fd_ostream::F_Binary : 0)));
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if (!Error.empty())
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return 0;
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if (ResultPathName)
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*ResultPathName = OutFile;
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return OS.take();
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}
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// Initialization Utilities
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bool CompilerInstance::InitializeSourceManager(llvm::StringRef InputFile) {
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return InitializeSourceManager(InputFile, getDiagnostics(), getFileManager(),
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getSourceManager(), getFrontendOpts());
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}
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bool CompilerInstance::InitializeSourceManager(llvm::StringRef InputFile,
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Diagnostic &Diags,
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FileManager &FileMgr,
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SourceManager &SourceMgr,
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const FrontendOptions &Opts) {
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// Figure out where to get and map in the main file.
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if (Opts.EmptyInputOnly) {
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const char *EmptyStr = "";
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llvm::MemoryBuffer *SB =
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llvm::MemoryBuffer::getMemBuffer(EmptyStr, EmptyStr, "<empty input>");
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SourceMgr.createMainFileIDForMemBuffer(SB);
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} else if (InputFile != "-") {
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const FileEntry *File = FileMgr.getFile(InputFile);
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if (File) SourceMgr.createMainFileID(File, SourceLocation());
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if (SourceMgr.getMainFileID().isInvalid()) {
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Diags.Report(diag::err_fe_error_reading) << InputFile;
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return false;
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}
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} else {
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llvm::MemoryBuffer *SB = llvm::MemoryBuffer::getSTDIN();
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SourceMgr.createMainFileIDForMemBuffer(SB);
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if (SourceMgr.getMainFileID().isInvalid()) {
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Diags.Report(diag::err_fe_error_reading_stdin);
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return false;
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}
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}
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return true;
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}
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