1 //===-- ASTMerge.cpp - AST Merging Frontent Action --------------*- 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 #include "clang/Frontend/ASTUnit.h" 10 #include "clang/Frontend/CompilerInstance.h" 11 #include "clang/Frontend/FrontendActions.h" 12 #include "clang/AST/ASTContext.h" 13 #include "clang/AST/ASTDiagnostic.h" 14 #include "clang/AST/ASTImporter.h" 15 16 using namespace clang; 17 18 ASTConsumer *ASTMergeAction::CreateASTConsumer(CompilerInstance &CI, 19 llvm::StringRef InFile) { 20 return AdaptedAction->CreateASTConsumer(CI, InFile); 21 } 22 23 bool ASTMergeAction::BeginSourceFileAction(CompilerInstance &CI, 24 llvm::StringRef Filename) { 25 // FIXME: This is a hack. We need a better way to communicate the 26 // AST file, compiler instance, and file name than member variables 27 // of FrontendAction. 28 AdaptedAction->setCurrentFile(getCurrentFile(), takeCurrentASTUnit()); 29 AdaptedAction->setCompilerInstance(&CI); 30 return AdaptedAction->BeginSourceFileAction(CI, Filename); 31 } 32 33 void ASTMergeAction::ExecuteAction() { 34 CompilerInstance &CI = getCompilerInstance(); 35 CI.getDiagnostics().getClient()->BeginSourceFile( 36 CI.getASTContext().getLangOptions()); 37 CI.getDiagnostics().SetArgToStringFn(&FormatASTNodeDiagnosticArgument, 38 &CI.getASTContext()); 39 for (unsigned I = 0, N = ASTFiles.size(); I != N; ++I) { 40 ASTUnit *Unit = ASTUnit::LoadFromPCHFile(ASTFiles[I], 41 UnownedDiag(CI.getDiagnostics()), 42 false); 43 if (!Unit) 44 continue; 45 46 ASTImporter Importer(CI.getDiagnostics(), 47 CI.getASTContext(), 48 CI.getFileManager(), 49 Unit->getASTContext(), 50 Unit->getFileManager()); 51 52 TranslationUnitDecl *TU = Unit->getASTContext().getTranslationUnitDecl(); 53 for (DeclContext::decl_iterator D = TU->decls_begin(), 54 DEnd = TU->decls_end(); 55 D != DEnd; ++D) { 56 // Don't re-import __va_list_tag, __builtin_va_list. 57 if (NamedDecl *ND = dyn_cast<NamedDecl>(*D)) 58 if (IdentifierInfo *II = ND->getIdentifier()) 59 if (II->isStr("__va_list_tag") || II->isStr("__builtin_va_list")) 60 continue; 61 62 Importer.Import(*D); 63 } 64 65 delete Unit; 66 } 67 68 AdaptedAction->ExecuteAction(); 69 CI.getDiagnostics().getClient()->EndSourceFile(); 70 } 71 72 void ASTMergeAction::EndSourceFileAction() { 73 return AdaptedAction->EndSourceFileAction(); 74 } 75 76 ASTMergeAction::ASTMergeAction(FrontendAction *AdaptedAction, 77 std::string *ASTFiles, unsigned NumASTFiles) 78 : AdaptedAction(AdaptedAction), ASTFiles(ASTFiles, ASTFiles + NumASTFiles) { 79 assert(AdaptedAction && "ASTMergeAction needs an action to adapt"); 80 } 81 82 ASTMergeAction::~ASTMergeAction() { 83 delete AdaptedAction; 84 } 85 86 bool ASTMergeAction::usesPreprocessorOnly() const { 87 return AdaptedAction->usesPreprocessorOnly(); 88 } 89 90 bool ASTMergeAction::usesCompleteTranslationUnit() { 91 return AdaptedAction->usesCompleteTranslationUnit(); 92 } 93 94 bool ASTMergeAction::hasPCHSupport() const { 95 return AdaptedAction->hasPCHSupport(); 96 } 97 98 bool ASTMergeAction::hasASTSupport() const { 99 return AdaptedAction->hasASTSupport(); 100 } 101 102 bool ASTMergeAction::hasCodeCompletionSupport() const { 103 return AdaptedAction->hasCodeCompletionSupport(); 104 } 105