1 //===--- FrontendActions.cpp ----------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Rewrite/Frontend/FrontendActions.h" 11 #include "clang/AST/ASTConsumer.h" 12 #include "clang/Basic/FileManager.h" 13 #include "clang/Frontend/CompilerInstance.h" 14 #include "clang/Frontend/FrontendActions.h" 15 #include "clang/Frontend/FrontendDiagnostic.h" 16 #include "clang/Frontend/Utils.h" 17 #include "clang/Lex/Preprocessor.h" 18 #include "clang/Parse/Parser.h" 19 #include "clang/Rewrite/Frontend/ASTConsumers.h" 20 #include "clang/Rewrite/Frontend/FixItRewriter.h" 21 #include "clang/Rewrite/Frontend/Rewriters.h" 22 #include "llvm/ADT/OwningPtr.h" 23 #include "llvm/Support/FileSystem.h" 24 #include "llvm/Support/Path.h" 25 #include "llvm/Support/raw_ostream.h" 26 27 using namespace clang; 28 29 //===----------------------------------------------------------------------===// 30 // AST Consumer Actions 31 //===----------------------------------------------------------------------===// 32 33 ASTConsumer *HTMLPrintAction::CreateASTConsumer(CompilerInstance &CI, 34 StringRef InFile) { 35 if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile)) 36 return CreateHTMLPrinter(OS, CI.getPreprocessor()); 37 return 0; 38 } 39 40 FixItAction::FixItAction() {} 41 FixItAction::~FixItAction() {} 42 43 ASTConsumer *FixItAction::CreateASTConsumer(CompilerInstance &CI, 44 StringRef InFile) { 45 return new ASTConsumer(); 46 } 47 48 namespace { 49 class FixItRewriteInPlace : public FixItOptions { 50 public: 51 std::string RewriteFilename(const std::string &Filename, int &fd) { 52 fd = -1; 53 return Filename; 54 } 55 }; 56 57 class FixItActionSuffixInserter : public FixItOptions { 58 std::string NewSuffix; 59 60 public: 61 FixItActionSuffixInserter(std::string NewSuffix, bool FixWhatYouCan) 62 : NewSuffix(NewSuffix) { 63 this->FixWhatYouCan = FixWhatYouCan; 64 } 65 66 std::string RewriteFilename(const std::string &Filename, int &fd) { 67 fd = -1; 68 SmallString<128> Path(Filename); 69 llvm::sys::path::replace_extension(Path, 70 NewSuffix + llvm::sys::path::extension(Path)); 71 return Path.str(); 72 } 73 }; 74 75 class FixItRewriteToTemp : public FixItOptions { 76 public: 77 std::string RewriteFilename(const std::string &Filename, int &fd) { 78 SmallString<128> Path; 79 Path = llvm::sys::path::filename(Filename); 80 Path += "-%%%%%%%%"; 81 Path += llvm::sys::path::extension(Filename); 82 SmallString<128> NewPath; 83 llvm::sys::fs::unique_file(Path.str(), fd, NewPath); 84 return NewPath.str(); 85 } 86 }; 87 } // end anonymous namespace 88 89 bool FixItAction::BeginSourceFileAction(CompilerInstance &CI, 90 StringRef Filename) { 91 const FrontendOptions &FEOpts = getCompilerInstance().getFrontendOpts(); 92 if (!FEOpts.FixItSuffix.empty()) { 93 FixItOpts.reset(new FixItActionSuffixInserter(FEOpts.FixItSuffix, 94 FEOpts.FixWhatYouCan)); 95 } else { 96 FixItOpts.reset(new FixItRewriteInPlace); 97 FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan; 98 } 99 Rewriter.reset(new FixItRewriter(CI.getDiagnostics(), CI.getSourceManager(), 100 CI.getLangOpts(), FixItOpts.get())); 101 return true; 102 } 103 104 void FixItAction::EndSourceFileAction() { 105 // Otherwise rewrite all files. 106 Rewriter->WriteFixedFiles(); 107 } 108 109 bool FixItRecompile::BeginInvocation(CompilerInstance &CI) { 110 111 std::vector<std::pair<std::string, std::string> > RewrittenFiles; 112 bool err = false; 113 { 114 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 115 OwningPtr<FrontendAction> FixAction(new SyntaxOnlyAction()); 116 if (FixAction->BeginSourceFile(CI, FEOpts.Inputs[0])) { 117 OwningPtr<FixItOptions> FixItOpts; 118 if (FEOpts.FixToTemporaries) 119 FixItOpts.reset(new FixItRewriteToTemp()); 120 else 121 FixItOpts.reset(new FixItRewriteInPlace()); 122 FixItOpts->Silent = true; 123 FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan; 124 FixItOpts->FixOnlyWarnings = FEOpts.FixOnlyWarnings; 125 FixItRewriter Rewriter(CI.getDiagnostics(), CI.getSourceManager(), 126 CI.getLangOpts(), FixItOpts.get()); 127 FixAction->Execute(); 128 129 err = Rewriter.WriteFixedFiles(&RewrittenFiles); 130 131 FixAction->EndSourceFile(); 132 CI.setSourceManager(0); 133 CI.setFileManager(0); 134 } else { 135 err = true; 136 } 137 } 138 if (err) 139 return false; 140 CI.getDiagnosticClient().clear(); 141 CI.getDiagnostics().Reset(); 142 143 PreprocessorOptions &PPOpts = CI.getPreprocessorOpts(); 144 PPOpts.RemappedFiles.insert(PPOpts.RemappedFiles.end(), 145 RewrittenFiles.begin(), RewrittenFiles.end()); 146 PPOpts.RemappedFilesKeepOriginalName = false; 147 148 return true; 149 } 150 151 //===----------------------------------------------------------------------===// 152 // Preprocessor Actions 153 //===----------------------------------------------------------------------===// 154 155 ASTConsumer *RewriteObjCAction::CreateASTConsumer(CompilerInstance &CI, 156 StringRef InFile) { 157 if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile, "cpp")) { 158 if (CI.getLangOpts().ObjCRuntime.isNonFragile()) 159 return CreateModernObjCRewriter(InFile, OS, 160 CI.getDiagnostics(), CI.getLangOpts(), 161 CI.getDiagnosticOpts().NoRewriteMacros, 162 (CI.getCodeGenOpts().getDebugInfo() != 163 CodeGenOptions::NoDebugInfo)); 164 return CreateObjCRewriter(InFile, OS, 165 CI.getDiagnostics(), CI.getLangOpts(), 166 CI.getDiagnosticOpts().NoRewriteMacros); 167 } 168 return 0; 169 } 170 171 void RewriteMacrosAction::ExecuteAction() { 172 CompilerInstance &CI = getCompilerInstance(); 173 raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile()); 174 if (!OS) return; 175 176 RewriteMacrosInInput(CI.getPreprocessor(), OS); 177 } 178 179 void RewriteTestAction::ExecuteAction() { 180 CompilerInstance &CI = getCompilerInstance(); 181 raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile()); 182 if (!OS) return; 183 184 DoRewriteTest(CI.getPreprocessor(), OS); 185 } 186 187 void RewriteIncludesAction::ExecuteAction() { 188 CompilerInstance &CI = getCompilerInstance(); 189 raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile()); 190 if (!OS) return; 191 192 RewriteIncludesInInput(CI.getPreprocessor(), OS, 193 CI.getPreprocessorOutputOpts()); 194 } 195