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 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 case ModuleFileInfo: return new DumpModuleInfoAction(); 66 67 case PluginAction: { 68 for (FrontendPluginRegistry::iterator it = 69 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 70 it != ie; ++it) { 71 if (it->getName() == CI.getFrontendOpts().ActionName) { 72 OwningPtr<PluginASTAction> P(it->instantiate()); 73 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 74 return 0; 75 return P.take(); 76 } 77 } 78 79 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 80 << CI.getFrontendOpts().ActionName; 81 return 0; 82 } 83 84 case PrintDeclContext: return new DeclContextPrintAction(); 85 case PrintPreamble: return new PrintPreambleAction(); 86 case PrintPreprocessedInput: { 87 if (CI.getPreprocessorOutputOpts().RewriteIncludes) { 88 #ifdef CLANG_ENABLE_REWRITER 89 return new RewriteIncludesAction(); 90 #else 91 Action = "RewriteIncludesAction"; 92 break; 93 #endif 94 } 95 return new PrintPreprocessedAction(); 96 } 97 98 #ifdef CLANG_ENABLE_REWRITER 99 case RewriteMacros: return new RewriteMacrosAction(); 100 case RewriteObjC: return new RewriteObjCAction(); 101 case RewriteTest: return new RewriteTestAction(); 102 #else 103 case RewriteMacros: Action = "RewriteMacros"; break; 104 case RewriteObjC: Action = "RewriteObjC"; break; 105 case RewriteTest: Action = "RewriteTest"; break; 106 #endif 107 #ifdef CLANG_ENABLE_ARCMT 108 case MigrateSource: return new arcmt::MigrateSourceAction(); 109 #else 110 case MigrateSource: Action = "MigrateSource"; break; 111 #endif 112 #ifdef CLANG_ENABLE_STATIC_ANALYZER 113 case RunAnalysis: return new ento::AnalysisAction(); 114 #else 115 case RunAnalysis: Action = "RunAnalysis"; break; 116 #endif 117 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 118 } 119 120 #if !defined(CLANG_ENABLE_ARCMT) || !defined(CLANG_ENABLE_STATIC_ANALYZER) \ 121 || !defined(CLANG_ENABLE_REWRITER) 122 CI.getDiagnostics().Report(diag::err_fe_action_not_available) << Action; 123 return 0; 124 #else 125 llvm_unreachable("Invalid program action!"); 126 #endif 127 } 128 129 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 130 // Create the underlying action. 131 FrontendAction *Act = CreateFrontendBaseAction(CI); 132 if (!Act) 133 return 0; 134 135 const FrontendOptions &FEOpts = CI.getFrontendOpts(); 136 137 #ifdef CLANG_ENABLE_REWRITER 138 if (FEOpts.FixAndRecompile) { 139 Act = new FixItRecompile(Act); 140 } 141 #endif 142 143 #ifdef CLANG_ENABLE_ARCMT 144 // Potentially wrap the base FE action in an ARC Migrate Tool action. 145 switch (FEOpts.ARCMTAction) { 146 case FrontendOptions::ARCMT_None: 147 break; 148 case FrontendOptions::ARCMT_Check: 149 Act = new arcmt::CheckAction(Act); 150 break; 151 case FrontendOptions::ARCMT_Modify: 152 Act = new arcmt::ModifyAction(Act); 153 break; 154 case FrontendOptions::ARCMT_Migrate: 155 Act = new arcmt::MigrateAction(Act, 156 FEOpts.MTMigrateDir, 157 FEOpts.ARCMTMigrateReportOut, 158 FEOpts.ARCMTMigrateEmitARCErrors); 159 break; 160 } 161 162 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 163 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir, 164 FEOpts.ObjCMTAction); 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<OptTable> Opts(driver::createDriverOptTable()); 180 Opts->PrintHelp(llvm::outs(), "clang -cc1", 181 "LLVM 'Clang' Compiler: http://clang.llvm.org", 182 /*Include=*/ driver::options::CC1Option, /*Exclude=*/ 0); 183 return true; 184 } 185 186 // Honor -version. 187 // 188 // FIXME: Use a better -version message? 189 if (Clang->getFrontendOpts().ShowVersion) { 190 llvm::cl::PrintVersionMessage(); 191 return true; 192 } 193 194 // Load any requested plugins. 195 for (unsigned i = 0, 196 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 197 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 198 std::string Error; 199 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 200 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 201 << Path << Error; 202 } 203 204 // Honor -mllvm. 205 // 206 // FIXME: Remove this, one day. 207 // This should happen AFTER plugins have been loaded! 208 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 209 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 210 const char **Args = new const char*[NumArgs + 2]; 211 Args[0] = "clang (LLVM option parsing)"; 212 for (unsigned i = 0; i != NumArgs; ++i) 213 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 214 Args[NumArgs + 1] = 0; 215 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args); 216 } 217 218 #ifdef CLANG_ENABLE_STATIC_ANALYZER 219 // Honor -analyzer-checker-help. 220 // This should happen AFTER plugins have been loaded! 221 if (Clang->getAnalyzerOpts()->ShowCheckerHelp) { 222 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins); 223 return true; 224 } 225 #endif 226 227 // If there were errors in processing arguments, don't do anything else. 228 if (Clang->getDiagnostics().hasErrorOccurred()) 229 return false; 230 // Create and execute the frontend action. 231 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 232 if (!Act) 233 return false; 234 bool Success = Clang->ExecuteAction(*Act); 235 if (Clang->getFrontendOpts().DisableFree) 236 Act.take(); 237 return Success; 238 } 239