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/StaticAnalyzer/Frontend/FrontendActions.h" 17 #include "clang/ARCMigrate/ARCMTActions.h" 18 #include "clang/CodeGen/CodeGenAction.h" 19 #include "clang/Driver/CC1Options.h" 20 #include "clang/Driver/OptTable.h" 21 #include "clang/Frontend/CompilerInvocation.h" 22 #include "clang/Frontend/CompilerInstance.h" 23 #include "clang/Frontend/FrontendActions.h" 24 #include "clang/Frontend/FrontendDiagnostic.h" 25 #include "clang/Frontend/FrontendPluginRegistry.h" 26 #include "clang/Rewrite/FrontendActions.h" 27 #include "llvm/Support/ErrorHandling.h" 28 #include "llvm/Support/DynamicLibrary.h" 29 using namespace clang; 30 31 static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) { 32 using namespace clang::frontend; 33 34 switch (CI.getFrontendOpts().ProgramAction) { 35 default: 36 llvm_unreachable("Invalid program action!"); 37 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 CreateModule: return 0; 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 case EmitHTML: return new HTMLPrintAction(); 48 case EmitLLVM: return new EmitLLVMAction(); 49 case EmitLLVMOnly: return new EmitLLVMOnlyAction(); 50 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction(); 51 case EmitObj: return new EmitObjAction(); 52 case FixIt: return new FixItAction(); 53 case GeneratePCH: return new GeneratePCHAction(); 54 case GeneratePTH: return new GeneratePTHAction(); 55 case InitOnly: return new InitOnlyAction(); 56 case ParseSyntaxOnly: return new SyntaxOnlyAction(); 57 58 case PluginAction: { 59 for (FrontendPluginRegistry::iterator it = 60 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end(); 61 it != ie; ++it) { 62 if (it->getName() == CI.getFrontendOpts().ActionName) { 63 llvm::OwningPtr<PluginASTAction> P(it->instantiate()); 64 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs)) 65 return 0; 66 return P.take(); 67 } 68 } 69 70 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name) 71 << CI.getFrontendOpts().ActionName; 72 return 0; 73 } 74 75 case PrintDeclContext: return new DeclContextPrintAction(); 76 case PrintPreamble: return new PrintPreambleAction(); 77 case PrintPreprocessedInput: return new PrintPreprocessedAction(); 78 case RewriteMacros: return new RewriteMacrosAction(); 79 case RewriteObjC: return new RewriteObjCAction(); 80 case RewriteTest: return new RewriteTestAction(); 81 case RunAnalysis: return new ento::AnalysisAction(); 82 case RunPreprocessorOnly: return new PreprocessOnlyAction(); 83 } 84 } 85 86 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) { 87 // Create the underlying action. 88 FrontendAction *Act = CreateFrontendBaseAction(CI); 89 if (!Act) 90 return 0; 91 92 // Potentially wrap the base FE action in an ARC Migrate Tool action. 93 switch (CI.getFrontendOpts().ARCMTAction) { 94 case FrontendOptions::ARCMT_None: 95 break; 96 case FrontendOptions::ARCMT_Check: 97 Act = new arcmt::CheckAction(Act); 98 break; 99 case FrontendOptions::ARCMT_Modify: 100 Act = new arcmt::TransformationAction(Act); 101 break; 102 } 103 104 // If there are any AST files to merge, create a frontend action 105 // adaptor to perform the merge. 106 if (!CI.getFrontendOpts().ASTMergeFiles.empty()) 107 Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0], 108 CI.getFrontendOpts().ASTMergeFiles.size()); 109 110 return Act; 111 } 112 113 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) { 114 // Honor -help. 115 if (Clang->getFrontendOpts().ShowHelp) { 116 llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable()); 117 Opts->PrintHelp(llvm::outs(), "clang -cc1", 118 "LLVM 'Clang' Compiler: http://clang.llvm.org"); 119 return 0; 120 } 121 122 // Honor -analyzer-checker-help. 123 if (Clang->getAnalyzerOpts().ShowCheckerHelp) { 124 ento::printCheckerHelp(llvm::outs()); 125 return 0; 126 } 127 128 // Honor -version. 129 // 130 // FIXME: Use a better -version message? 131 if (Clang->getFrontendOpts().ShowVersion) { 132 llvm::cl::PrintVersionMessage(); 133 return 0; 134 } 135 136 // Honor -mllvm. 137 // 138 // FIXME: Remove this, one day. 139 if (!Clang->getFrontendOpts().LLVMArgs.empty()) { 140 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size(); 141 const char **Args = new const char*[NumArgs + 2]; 142 Args[0] = "clang (LLVM option parsing)"; 143 for (unsigned i = 0; i != NumArgs; ++i) 144 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str(); 145 Args[NumArgs + 1] = 0; 146 llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args)); 147 } 148 149 // Load any requested plugins. 150 for (unsigned i = 0, 151 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) { 152 const std::string &Path = Clang->getFrontendOpts().Plugins[i]; 153 std::string Error; 154 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error)) 155 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin) 156 << Path << Error; 157 } 158 159 // If there were errors in processing arguments, don't do anything else. 160 bool Success = false; 161 if (!Clang->getDiagnostics().hasErrorOccurred()) { 162 // Create and execute the frontend action. 163 llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang)); 164 if (Act) { 165 Success = Clang->ExecuteAction(*Act); 166 if (Clang->getFrontendOpts().DisableFree) 167 Act.take(); 168 } 169 } 170 171 return Success; 172 } 173