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