1 //===-- FrontendActions.h - Useful Frontend Actions -------------*- C++ -*-===// 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 #ifndef LLVM_CLANG_FRONTEND_FRONTENDACTIONS_H 11 #define LLVM_CLANG_FRONTEND_FRONTENDACTIONS_H 12 13 #include "clang/Frontend/FrontendAction.h" 14 #include <string> 15 #include <vector> 16 17 namespace clang { 18 19 class Module; 20 class FileEntry; 21 22 //===----------------------------------------------------------------------===// 23 // Custom Consumer Actions 24 //===----------------------------------------------------------------------===// 25 26 class InitOnlyAction : public FrontendAction { 27 void ExecuteAction() override; 28 29 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 30 StringRef InFile) override; 31 32 public: 33 // Don't claim to only use the preprocessor, we want to follow the AST path, 34 // but do nothing. 35 bool usesPreprocessorOnly() const override { return false; } 36 }; 37 38 //===----------------------------------------------------------------------===// 39 // AST Consumer Actions 40 //===----------------------------------------------------------------------===// 41 42 class ASTPrintAction : public ASTFrontendAction { 43 protected: 44 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 45 StringRef InFile) override; 46 }; 47 48 class ASTDumpAction : public ASTFrontendAction { 49 protected: 50 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 51 StringRef InFile) override; 52 }; 53 54 class ASTDeclListAction : public ASTFrontendAction { 55 protected: 56 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 57 StringRef InFile) override; 58 }; 59 60 class ASTViewAction : public ASTFrontendAction { 61 protected: 62 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 63 StringRef InFile) override; 64 }; 65 66 class DeclContextPrintAction : public ASTFrontendAction { 67 protected: 68 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 69 StringRef InFile) override; 70 }; 71 72 class GeneratePCHAction : public ASTFrontendAction { 73 protected: 74 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 75 StringRef InFile) override; 76 77 TranslationUnitKind getTranslationUnitKind() override { 78 return TU_Prefix; 79 } 80 81 bool hasASTFileSupport() const override { return false; } 82 83 public: 84 /// \brief Compute the AST consumer arguments that will be used to 85 /// create the PCHGenerator instance returned by CreateASTConsumer. 86 /// 87 /// \returns true if an error occurred, false otherwise. 88 static raw_ostream *ComputeASTConsumerArguments(CompilerInstance &CI, 89 StringRef InFile, 90 std::string &Sysroot, 91 std::string &OutputFile); 92 }; 93 94 class GenerateModuleAction : public ASTFrontendAction { 95 clang::Module *Module; 96 const FileEntry *ModuleMapForUniquing; 97 bool IsSystem; 98 99 protected: 100 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 101 StringRef InFile) override; 102 103 TranslationUnitKind getTranslationUnitKind() override { 104 return TU_Module; 105 } 106 107 bool hasASTFileSupport() const override { return false; } 108 109 public: 110 GenerateModuleAction(const FileEntry *ModuleMap = nullptr, 111 bool IsSystem = false) 112 : ASTFrontendAction(), ModuleMapForUniquing(ModuleMap), IsSystem(IsSystem) 113 { } 114 115 bool BeginSourceFileAction(CompilerInstance &CI, StringRef Filename) override; 116 117 /// \brief Compute the AST consumer arguments that will be used to 118 /// create the PCHGenerator instance returned by CreateASTConsumer. 119 /// 120 /// \returns true if an error occurred, false otherwise. 121 raw_ostream *ComputeASTConsumerArguments(CompilerInstance &CI, 122 StringRef InFile, 123 std::string &Sysroot, 124 std::string &OutputFile); 125 }; 126 127 class SyntaxOnlyAction : public ASTFrontendAction { 128 protected: 129 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 130 StringRef InFile) override; 131 132 public: 133 bool hasCodeCompletionSupport() const override { return true; } 134 }; 135 136 /// \brief Dump information about the given module file, to be used for 137 /// basic debugging and discovery. 138 class DumpModuleInfoAction : public ASTFrontendAction { 139 protected: 140 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 141 StringRef InFile) override; 142 void ExecuteAction() override; 143 144 public: 145 bool hasPCHSupport() const override { return false; } 146 bool hasASTFileSupport() const override { return true; } 147 bool hasIRSupport() const override { return false; } 148 bool hasCodeCompletionSupport() const override { return false; } 149 }; 150 151 class VerifyPCHAction : public ASTFrontendAction { 152 protected: 153 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 154 StringRef InFile) override; 155 156 void ExecuteAction() override; 157 158 public: 159 bool hasCodeCompletionSupport() const override { return false; } 160 }; 161 162 /** 163 * \brief Frontend action adaptor that merges ASTs together. 164 * 165 * This action takes an existing AST file and "merges" it into the AST 166 * context, producing a merged context. This action is an action 167 * adaptor, which forwards most of its calls to another action that 168 * will consume the merged context. 169 */ 170 class ASTMergeAction : public FrontendAction { 171 /// \brief The action that the merge action adapts. 172 FrontendAction *AdaptedAction; 173 174 /// \brief The set of AST files to merge. 175 std::vector<std::string> ASTFiles; 176 177 protected: 178 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI, 179 StringRef InFile) override; 180 181 bool BeginSourceFileAction(CompilerInstance &CI, 182 StringRef Filename) override; 183 184 void ExecuteAction() override; 185 void EndSourceFileAction() override; 186 187 public: 188 ASTMergeAction(FrontendAction *AdaptedAction, ArrayRef<std::string> ASTFiles); 189 ~ASTMergeAction() override; 190 191 bool usesPreprocessorOnly() const override; 192 TranslationUnitKind getTranslationUnitKind() override; 193 bool hasPCHSupport() const override; 194 bool hasASTFileSupport() const override; 195 bool hasCodeCompletionSupport() const override; 196 }; 197 198 class PrintPreambleAction : public FrontendAction { 199 protected: 200 void ExecuteAction() override; 201 std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &, 202 StringRef) override { 203 return nullptr; 204 } 205 206 bool usesPreprocessorOnly() const override { return true; } 207 }; 208 209 //===----------------------------------------------------------------------===// 210 // Preprocessor Actions 211 //===----------------------------------------------------------------------===// 212 213 class DumpRawTokensAction : public PreprocessorFrontendAction { 214 protected: 215 void ExecuteAction() override; 216 }; 217 218 class DumpTokensAction : public PreprocessorFrontendAction { 219 protected: 220 void ExecuteAction() override; 221 }; 222 223 class GeneratePTHAction : public PreprocessorFrontendAction { 224 protected: 225 void ExecuteAction() override; 226 }; 227 228 class PreprocessOnlyAction : public PreprocessorFrontendAction { 229 protected: 230 void ExecuteAction() override; 231 }; 232 233 class PrintPreprocessedAction : public PreprocessorFrontendAction { 234 protected: 235 void ExecuteAction() override; 236 237 bool hasPCHSupport() const override { return true; } 238 }; 239 240 } // end namespace clang 241 242 #endif 243
