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], CI.getDiagnostics(), 41 false, true); 42 if (!Unit) 43 continue; 44 45 ASTImporter Importer(CI.getDiagnostics(), 46 CI.getASTContext(), 47 CI.getFileManager(), 48 Unit->getASTContext(), 49 Unit->getFileManager()); 50 51 TranslationUnitDecl *TU = Unit->getASTContext().getTranslationUnitDecl(); 52 for (DeclContext::decl_iterator D = TU->decls_begin(), 53 DEnd = TU->decls_end(); 54 D != DEnd; ++D) { 55 Importer.Import(*D); 56 } 57 58 delete Unit; 59 } 60 61 AdaptedAction->ExecuteAction(); 62 CI.getDiagnostics().getClient()->EndSourceFile(); 63 } 64 65 void ASTMergeAction::EndSourceFileAction() { 66 return AdaptedAction->EndSourceFileAction(); 67 } 68 69 ASTMergeAction::ASTMergeAction(FrontendAction *AdaptedAction, 70 std::string *ASTFiles, unsigned NumASTFiles) 71 : AdaptedAction(AdaptedAction), ASTFiles(ASTFiles, ASTFiles + NumASTFiles) { 72 assert(AdaptedAction && "ASTMergeAction needs an action to adapt"); 73 } 74 75 ASTMergeAction::~ASTMergeAction() { 76 delete AdaptedAction; 77 } 78 79 bool ASTMergeAction::usesPreprocessorOnly() const { 80 return AdaptedAction->usesPreprocessorOnly(); 81 } 82 83 bool ASTMergeAction::usesCompleteTranslationUnit() { 84 return AdaptedAction->usesCompleteTranslationUnit(); 85 } 86 87 bool ASTMergeAction::hasPCHSupport() const { 88 return AdaptedAction->hasPCHSupport(); 89 } 90 91 bool ASTMergeAction::hasASTSupport() const { 92 return AdaptedAction->hasASTSupport(); 93 } 94 95 bool ASTMergeAction::hasCodeCompletionSupport() const { 96 return AdaptedAction->hasCodeCompletionSupport(); 97 } 98