1 //===--- ExecuteCompilerInvocation.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 // This file holds ExecuteCompilerInvocation(). It is split into its own file to 11 // minimize the impact of pulling in essentially everything else in Clang. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "clang/FrontendTool/Utils.h" 16 #include "clang/ARCMigrate/ARCMTActions.h" 17 #include "clang/CodeGen/CodeGenAction.h" 18 #include "clang/Driver/Options.h" 19 #include "clang/Frontend/CompilerInstance.h" 20 #include "clang/Frontend/CompilerInvocation.h" 21 #include "clang/Frontend/FrontendActions.h" 22 #include "clang/Frontend/FrontendDiagnostic.h" 23 #include "clang/Frontend/FrontendPluginRegistry.h" 24 #include "clang/Rewrite/Frontend/FrontendActions.h" 25 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h" 26 #include "llvm/Option/OptTable.h" 27 #include "llvm/Option/Option.h" 28 #include "llvm/Support/DynamicLibrary.h" 29 #include "llvm/Support/ErrorHandling.h" 30 using namespace clang; 31 using namespace llvm::opt; 32 33 static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) { 34 using namespace clang::frontend; 35 StringRef Action("unknown"); 36 37 switch (CI.getFrontendOpts().ProgramAction) { 38 case ASTDeclList: return new ASTDeclListAction(); 39 case ASTDump: return new ASTDumpAction(); 40 case ASTDumpXML: return new ASTDumpXMLAction(); 41 case ASTPrint: return new ASTPrintAction(); 42 case ASTView: return new ASTViewAction(); 43 case DumpRawTokens: return new DumpRawTokensAction(); 44 case DumpTokens: return new DumpTokensAction(); 45 case EmitAssembly: return new EmitAssemblyAction(); 46 case EmitBC: return new EmitBCAction(); 47 #ifdef CLANG_ENABLE_REWRITER 48 case EmitHTML: return new HTMLPrintAction(); 49 #else 50 case EmitHTML: Action = "EmitHTML"; break; 51 #endif 52 case EmitLLVM: return new EmitLLVMAction(); 53 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 54 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 55 case EmitObj: return new EmitObjAction(); 56 #ifdef CLANG_ENABLE_REWRITER 57 case FixIt: return new FixItAction(); 58 #else 59 case FixIt: Action = "FixIt"; break; 60 #endif 61 case GenerateModule: return new GenerateModuleAction; 62 case GeneratePCH: return new GeneratePCHAction; 63 case GeneratePTH: return new GeneratePTHAction(); 64 case InitOnly: return new InitOnlyAction(); 65 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 66 case ModuleFileInfo: return new DumpModuleInfoAction(); 67 68 case PluginAction: { 69 for (FrontendPluginRegistry::iterator it = 70 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 71 it != ie; ++it) { 72 if (it->getName() == CI.getFrontendOpts().ActionName) { 73 OwningPtr<PluginASTAction> P(it->instantiate()); 74 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 75 return 0; 76 return P.take(); 77 } 78 } 79 80 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 81 << CI.getFrontendOpts().ActionName; 82 return 0; 83 } 84 85 case PrintDeclContext: return new DeclContextPrintAction(); 86 case PrintPreamble: return new PrintPreambleAction(); 87 case PrintPreprocessedInput: { 88 if (CI.getPreprocessorOutputOpts().RewriteIncludes) { 89 #ifdef CLANG_ENABLE_REWRITER 90 return new RewriteIncludesAction(); 91 #else 92 Action = "RewriteIncludesAction"; 93 break; 94 #endif 95 } 96 return new PrintPreprocessedAction(); 97 } 98 99 #ifdef CLANG_ENABLE_REWRITER 100 case RewriteMacros: return new RewriteMacrosAction(); 101 case RewriteObjC: return new RewriteObjCAction(); 102 case RewriteTest: return new RewriteTestAction(); 103 #else 104 case RewriteMacros: Action = "RewriteMacros"; break; 105 case RewriteObjC: Action = "RewriteObjC"; break; 106 case RewriteTest: Action = "RewriteTest"; break; 107 #endif 108 #ifdef CLANG_ENABLE_ARCMT 109 case MigrateSource: return new arcmt::MigrateSourceAction(); 110 #else 111 case MigrateSource: Action = "MigrateSource"; break; 112 #endif 113 #ifdef CLANG_ENABLE_STATIC_ANALYZER 114 case RunAnalysis: return new ento::AnalysisAction(); 115 #else 116 case RunAnalysis: Action = "RunAnalysis"; break; 117 #endif 118 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 119 } 120 121 #if !defined(CLANG_ENABLE_ARCMT) || !defined(CLANG_ENABLE_STATIC_ANALYZER) \ 122 || !defined(CLANG_ENABLE_REWRITER) 123 CI.getDiagnostics().Report(diag::err_fe_action_not_available) << Action; 124 return 0; 125 #else 126 llvm_unreachable("Invalid program action!"); 127 #endif 128 } 129 130 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 131 // Create the underlying action. 132 FrontendAction *Act = CreateFrontendBaseAction(CI); 133 if (!Act) 134 return 0; 135 136 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 137 138 #ifdef CLANG_ENABLE_REWRITER 139 if (FEOpts.FixAndRecompile) { 140 Act = new FixItRecompile(Act); 141 } 142 #endif 143 144 #ifdef CLANG_ENABLE_ARCMT 145 // Potentially wrap the base FE action in an ARC Migrate Tool action. 146 switch (FEOpts.ARCMTAction) { 147 case FrontendOptions::ARCMT_None: 148 break; 149 case FrontendOptions::ARCMT_Check: 150 Act = new arcmt::CheckAction(Act); 151 break; 152 case FrontendOptions::ARCMT_Modify: 153 Act = new arcmt::ModifyAction(Act); 154 break; 155 case FrontendOptions::ARCMT_Migrate: 156 Act = new arcmt::MigrateAction(Act, 157 FEOpts.MTMigrateDir, 158 FEOpts.ARCMTMigrateReportOut, 159 FEOpts.ARCMTMigrateEmitARCErrors); 160 break; 161 } 162 163 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 164 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir, 165 FEOpts.ObjCMTAction & FrontendOptions::ObjCMT_Literals, 166 FEOpts.ObjCMTAction & FrontendOptions::ObjCMT_Subscripting, 167 FEOpts.ObjCMTAction & FrontendOptions::ObjCMT_Property, 168 FEOpts.ObjCMTAction & FrontendOptions::ObjCMT_ReadonlyProperty); 169 } 170 #endif 171 172 // If there are any AST files to merge, create a frontend action 173 // adaptor to perform the merge. 174 if (!FEOpts.ASTMergeFiles.empty()) 175 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles); 176 177 return Act; 178 } 179 180 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 181 // Honor -help. 182 if (Clang->getFrontendOpts().ShowHelp) { 183 OwningPtr<OptTable> Opts(driver::createDriverOptTable()); 184 Opts->PrintHelp(llvm::outs(), "clang -cc1", 185 "LLVM 'Clang' Compiler: http://clang.llvm.org", 186 /*Include=*/ driver::options::CC1Option, /*Exclude=*/ 0); 187 return true; 188 } 189 190 // Honor -version. 191 // 192 // FIXME: Use a better -version message? 193 if (Clang->getFrontendOpts().ShowVersion) { 194 llvm::cl::PrintVersionMessage(); 195 return true; 196 } 197 198 // Load any requested plugins. 199 for (unsigned i = 0, 200 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 201 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 202 std::string Error; 203 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 204 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 205 << Path << Error; 206 } 207 208 // Honor -mllvm. 209 // 210 // FIXME: Remove this, one day. 211 // This should happen AFTER plugins have been loaded! 212 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 213 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 214 const char **Args = new const char*[NumArgs + 2]; 215 Args[0] = "clang (LLVM option parsing)"; 216 for (unsigned i = 0; i != NumArgs; ++i) 217 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 218 Args[NumArgs + 1] = 0; 219 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 220 } 221 222 #ifdef CLANG_ENABLE_STATIC_ANALYZER 223 // Honor -analyzer-checker-help. 224 // This should happen AFTER plugins have been loaded! 225 if (Clang->getAnalyzerOpts()->ShowCheckerHelp) { 226 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 227 return true; 228 } 229 #endif 230 231 // If there were errors in processing arguments, don't do anything else. 232 if (Clang->getDiagnostics().hasErrorOccurred()) 233 return false; 234 // Create and execute the frontend action. 235 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 236 if (!Act) 237 return false; 238 bool Success = Clang->ExecuteAction(*Act); 239 if (Clang->getFrontendOpts().DisableFree) 240 Act.take(); 241 return Success; 242 } 243