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/Support/FileSystem.h" 23 #include "llvm/Support/Path.h" 24 #include "llvm/Support/raw_ostream.h" 25 #include <memory> 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 nullptr; 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) override { 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) override { 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) override { 78 SmallString<128> Path; 79 llvm::sys::fs::createTemporaryFile(llvm::sys::path::filename(Filename), 80 llvm::sys::path::extension(Filename), fd, 81 Path); 82 return Path.str(); 83 } 84 }; 85 } // end anonymous namespace 86 87 bool FixItAction::BeginSourceFileAction(CompilerInstance &CI, 88 StringRef Filename) { 89 const FrontendOptions &FEOpts = getCompilerInstance().getFrontendOpts(); 90 if (!FEOpts.FixItSuffix.empty()) { 91 FixItOpts.reset(new FixItActionSuffixInserter(FEOpts.FixItSuffix, 92 FEOpts.FixWhatYouCan)); 93 } else { 94 FixItOpts.reset(new FixItRewriteInPlace); 95 FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan; 96 } 97 Rewriter.reset(new FixItRewriter(CI.getDiagnostics(), CI.getSourceManager(), 98 CI.getLangOpts(), FixItOpts.get())); 99 return true; 100 } 101 102 void FixItAction::EndSourceFileAction() { 103 // Otherwise rewrite all files. 104 Rewriter->WriteFixedFiles(); 105 } 106 107 bool FixItRecompile::BeginInvocation(CompilerInstance &CI) { 108 109 std::vector<std::pair<std::string, std::string> > RewrittenFiles; 110 bool err = false; 111 { 112 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 113 std::unique_ptr<FrontendAction> FixAction(new SyntaxOnlyAction()); 114 if (FixAction->BeginSourceFile(CI, FEOpts.Inputs[0])) { 115 std::unique_ptr<FixItOptions> FixItOpts; 116 if (FEOpts.FixToTemporaries) 117 FixItOpts.reset(new FixItRewriteToTemp()); 118 else 119 FixItOpts.reset(new FixItRewriteInPlace()); 120 FixItOpts->Silent = true; 121 FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan; 122 FixItOpts->FixOnlyWarnings = FEOpts.FixOnlyWarnings; 123 FixItRewriter Rewriter(CI.getDiagnostics(), CI.getSourceManager(), 124 CI.getLangOpts(), FixItOpts.get()); 125 FixAction->Execute(); 126 127 err = Rewriter.WriteFixedFiles(&RewrittenFiles); 128 129 FixAction->EndSourceFile(); 130 CI.setSourceManager(nullptr); 131 CI.setFileManager(nullptr); 132 } else { 133 err = true; 134 } 135 } 136 if (err) 137 return false; 138 CI.getDiagnosticClient().clear(); 139 CI.getDiagnostics().Reset(); 140 141 PreprocessorOptions &PPOpts = CI.getPreprocessorOpts(); 142 PPOpts.RemappedFiles.insert(PPOpts.RemappedFiles.end(), 143 RewrittenFiles.begin(), RewrittenFiles.end()); 144 PPOpts.RemappedFilesKeepOriginalName = false; 145 146 return true; 147 } 148 149 //===----------------------------------------------------------------------===// 150 // Preprocessor Actions 151 //===----------------------------------------------------------------------===// 152 153 ASTConsumer *RewriteObjCAction::CreateASTConsumer(CompilerInstance &CI, 154 StringRef InFile) { 155 if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile, "cpp")) { 156 if (CI.getLangOpts().ObjCRuntime.isNonFragile()) 157 return CreateModernObjCRewriter(InFile, OS, 158 CI.getDiagnostics(), CI.getLangOpts(), 159 CI.getDiagnosticOpts().NoRewriteMacros, 160 (CI.getCodeGenOpts().getDebugInfo() != 161 CodeGenOptions::NoDebugInfo)); 162 return CreateObjCRewriter(InFile, OS, 163 CI.getDiagnostics(), CI.getLangOpts(), 164 CI.getDiagnosticOpts().NoRewriteMacros); 165 } 166 return nullptr; 167 } 168 169 void RewriteMacrosAction::ExecuteAction() { 170 CompilerInstance &CI = getCompilerInstance(); 171 raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile()); 172 if (!OS) return; 173 174 RewriteMacrosInInput(CI.getPreprocessor(), OS); 175 } 176 177 void RewriteTestAction::ExecuteAction() { 178 CompilerInstance &CI = getCompilerInstance(); 179 raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile()); 180 if (!OS) return; 181 182 DoRewriteTest(CI.getPreprocessor(), OS); 183 } 184 185 void RewriteIncludesAction::ExecuteAction() { 186 CompilerInstance &CI = getCompilerInstance(); 187 raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile()); 188 if (!OS) return; 189 190 RewriteIncludesInInput(CI.getPreprocessor(), OS, 191 CI.getPreprocessorOutputOpts()); 192 } 193
