307 lines
10 KiB
C++
307 lines
10 KiB
C++
//===--- FrontendActions.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/FrontendActions.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Parse/Parser.h"
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#include "clang/Basic/FileManager.h"
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#include "clang/Frontend/AnalysisConsumer.h"
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#include "clang/Frontend/ASTConsumers.h"
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#include "clang/Frontend/ASTUnit.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FixItRewriter.h"
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#include "clang/Frontend/FrontendDiagnostic.h"
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#include "clang/Frontend/Utils.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// AST Consumer Actions
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//===----------------------------------------------------------------------===//
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ASTConsumer *AnalysisAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return CreateAnalysisConsumer(CI.getPreprocessor(),
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CI.getFrontendOpts().OutputFile,
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CI.getAnalyzerOpts());
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}
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ASTConsumer *ASTPrintAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
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return CreateASTPrinter(OS);
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return 0;
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}
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ASTConsumer *ASTPrintXMLAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile, "xml"))
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return CreateASTPrinterXML(OS);
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return 0;
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}
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ASTConsumer *ASTDumpAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return CreateASTDumper();
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}
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ASTConsumer *ASTViewAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return CreateASTViewer();
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}
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ASTConsumer *DeclContextPrintAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return CreateDeclContextPrinter();
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}
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ASTConsumer *DumpRecordAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return CreateRecordLayoutDumper();
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}
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ASTConsumer *GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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const std::string &Sysroot = CI.getHeaderSearchOpts().Sysroot;
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if (CI.getFrontendOpts().RelocatablePCH &&
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Sysroot.empty()) {
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CI.getDiagnostics().Report(diag::err_relocatable_without_without_isysroot);
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return 0;
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}
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llvm::raw_ostream *OS = CI.createDefaultOutputFile(true, InFile);
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if (!OS)
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return 0;
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if (CI.getFrontendOpts().RelocatablePCH)
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return CreatePCHGenerator(CI.getPreprocessor(), OS, Sysroot.c_str());
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return CreatePCHGenerator(CI.getPreprocessor(), OS);
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}
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ASTConsumer *HTMLPrintAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
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return CreateHTMLPrinter(OS, CI.getPreprocessor());
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return 0;
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}
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ASTConsumer *InheritanceViewAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return CreateInheritanceViewer(CI.getFrontendOpts().ViewClassInheritance);
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}
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FixItAction::FixItAction() {}
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FixItAction::~FixItAction() {}
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ASTConsumer *FixItAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return new ASTConsumer();
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}
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/// AddFixItLocations - Add any individual user specified "fix-it" locations,
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/// and return true on success.
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static bool AddFixItLocations(CompilerInstance &CI,
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FixItRewriter &FixItRewrite) {
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const std::vector<ParsedSourceLocation> &Locs =
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CI.getFrontendOpts().FixItLocations;
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for (unsigned i = 0, e = Locs.size(); i != e; ++i) {
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const FileEntry *File = CI.getFileManager().getFile(Locs[i].FileName);
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if (!File) {
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CI.getDiagnostics().Report(diag::err_fe_unable_to_find_fixit_file)
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<< Locs[i].FileName;
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return false;
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}
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RequestedSourceLocation Requested;
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Requested.File = File;
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Requested.Line = Locs[i].Line;
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Requested.Column = Locs[i].Column;
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FixItRewrite.addFixItLocation(Requested);
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}
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return true;
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}
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bool FixItAction::BeginSourceFileAction(CompilerInstance &CI,
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llvm::StringRef Filename) {
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Rewriter.reset(new FixItRewriter(CI.getDiagnostics(), CI.getSourceManager(),
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CI.getLangOpts()));
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if (!AddFixItLocations(CI, *Rewriter))
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return false;
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return true;
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}
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void FixItAction::EndSourceFileAction() {
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const FrontendOptions &FEOpts = getCompilerInstance().getFrontendOpts();
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Rewriter->WriteFixedFile(getCurrentFile(), FEOpts.OutputFile);
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}
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ASTConsumer *RewriteObjCAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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if (llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, InFile, "cpp"))
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return CreateObjCRewriter(InFile, OS,
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CI.getDiagnostics(), CI.getLangOpts(),
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CI.getDiagnosticOpts().NoRewriteMacros);
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return 0;
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}
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ASTConsumer *SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return new ASTConsumer();
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}
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CodeGenAction::CodeGenAction(unsigned _Act) : Act(_Act) {}
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ASTConsumer *CodeGenAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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BackendAction BA = static_cast<BackendAction>(Act);
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llvm::OwningPtr<llvm::raw_ostream> OS;
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switch (BA) {
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case Backend_EmitAssembly:
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OS.reset(CI.createDefaultOutputFile(false, InFile, "s"));
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break;
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case Backend_EmitLL:
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OS.reset(CI.createDefaultOutputFile(false, InFile, "ll"));
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break;
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case Backend_EmitBC:
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OS.reset(CI.createDefaultOutputFile(true, InFile, "bc"));
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break;
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case Backend_EmitNothing:
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break;
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}
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if (BA != Backend_EmitNothing && !OS)
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return 0;
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return CreateBackendConsumer(BA, CI.getDiagnostics(), CI.getLangOpts(),
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CI.getCodeGenOpts(), CI.getTargetOpts(),
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CI.getFrontendOpts().ShowTimers, InFile,
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OS.take(), CI.getLLVMContext());
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}
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EmitAssemblyAction::EmitAssemblyAction()
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: CodeGenAction(Backend_EmitAssembly) {}
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EmitBCAction::EmitBCAction() : CodeGenAction(Backend_EmitBC) {}
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EmitLLVMAction::EmitLLVMAction() : CodeGenAction(Backend_EmitLL) {}
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EmitLLVMOnlyAction::EmitLLVMOnlyAction() : CodeGenAction(Backend_EmitNothing) {}
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//===----------------------------------------------------------------------===//
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// Preprocessor Actions
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//===----------------------------------------------------------------------===//
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void DumpRawTokensAction::ExecuteAction() {
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Preprocessor &PP = getCompilerInstance().getPreprocessor();
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SourceManager &SM = PP.getSourceManager();
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// Start lexing the specified input file.
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const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
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Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOptions());
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RawLex.SetKeepWhitespaceMode(true);
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Token RawTok;
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RawLex.LexFromRawLexer(RawTok);
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while (RawTok.isNot(tok::eof)) {
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PP.DumpToken(RawTok, true);
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llvm::errs() << "\n";
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RawLex.LexFromRawLexer(RawTok);
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}
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}
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void DumpTokensAction::ExecuteAction() {
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Preprocessor &PP = getCompilerInstance().getPreprocessor();
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// Start preprocessing the specified input file.
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Token Tok;
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PP.EnterMainSourceFile();
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do {
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PP.Lex(Tok);
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PP.DumpToken(Tok, true);
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llvm::errs() << "\n";
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} while (Tok.isNot(tok::eof));
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}
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void GeneratePTHAction::ExecuteAction() {
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CompilerInstance &CI = getCompilerInstance();
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if (CI.getFrontendOpts().OutputFile.empty() ||
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CI.getFrontendOpts().OutputFile == "-") {
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// FIXME: Don't fail this way.
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// FIXME: Verify that we can actually seek in the given file.
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llvm::llvm_report_error("PTH requires a seekable file for output!");
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}
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llvm::raw_fd_ostream *OS =
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CI.createDefaultOutputFile(true, getCurrentFile());
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if (!OS) return;
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CacheTokens(CI.getPreprocessor(), OS);
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}
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void ParseOnlyAction::ExecuteAction() {
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Preprocessor &PP = getCompilerInstance().getPreprocessor();
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llvm::OwningPtr<Action> PA(new MinimalAction(PP));
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Parser P(PP, *PA);
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PP.EnterMainSourceFile();
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P.ParseTranslationUnit();
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}
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void PreprocessOnlyAction::ExecuteAction() {
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Preprocessor &PP = getCompilerInstance().getPreprocessor();
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Token Tok;
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// Start parsing the specified input file.
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PP.EnterMainSourceFile();
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do {
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PP.Lex(Tok);
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} while (Tok.isNot(tok::eof));
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}
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void PrintParseAction::ExecuteAction() {
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CompilerInstance &CI = getCompilerInstance();
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Preprocessor &PP = getCompilerInstance().getPreprocessor();
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llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile());
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if (!OS) return;
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llvm::OwningPtr<Action> PA(CreatePrintParserActionsAction(PP, OS));
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Parser P(PP, *PA);
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PP.EnterMainSourceFile();
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P.ParseTranslationUnit();
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}
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void PrintPreprocessedAction::ExecuteAction() {
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CompilerInstance &CI = getCompilerInstance();
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// Output file needs to be set to 'Binary', to avoid converting Unix style
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// line feeds (<LF>) to Microsoft style line feeds (<CR><LF>).
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llvm::raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile());
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if (!OS) return;
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DoPrintPreprocessedInput(CI.getPreprocessor(), OS,
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CI.getPreprocessorOutputOpts());
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}
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void RewriteMacrosAction::ExecuteAction() {
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CompilerInstance &CI = getCompilerInstance();
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llvm::raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile());
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if (!OS) return;
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RewriteMacrosInInput(CI.getPreprocessor(), OS);
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}
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void RewriteTestAction::ExecuteAction() {
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CompilerInstance &CI = getCompilerInstance();
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llvm::raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile());
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if (!OS) return;
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DoRewriteTest(CI.getPreprocessor(), OS);
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}
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