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//===-- ASTMerge.cpp - AST Merging Frontent Action --------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/ASTUnit.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTImporter.h"
using namespace clang;
ASTConsumer *ASTMergeAction::CreateASTConsumer(CompilerInstance &CI,
llvm::StringRef InFile) {
return AdaptedAction->CreateASTConsumer(CI, InFile);
}
bool ASTMergeAction::BeginSourceFileAction(CompilerInstance &CI,
llvm::StringRef Filename) {
// FIXME: This is a hack. We need a better way to communicate the
// AST file, compiler instance, and file name than member variables
// of FrontendAction.
AdaptedAction->setCurrentFile(getCurrentFile(), takeCurrentASTUnit());
AdaptedAction->setCompilerInstance(&CI);
return AdaptedAction->BeginSourceFileAction(CI, Filename);
}
void ASTMergeAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
for (unsigned I = 0, N = ASTFiles.size(); I != N; ++I) {
ASTUnit *Unit = ASTUnit::LoadFromPCHFile(ASTFiles[I], CI.getDiagnostics(),
false, true);
if (!Unit)
continue;
ASTImporter Importer(CI.getASTContext(), CI.getDiagnostics(),
Unit->getASTContext(), CI.getDiagnostics());
TranslationUnitDecl *TU = Unit->getASTContext().getTranslationUnitDecl();
for (DeclContext::decl_iterator D = TU->decls_begin(),
DEnd = TU->decls_end();
D != DEnd; ++D) {
// FIXME: We only merge variables whose names start with x. Why
// would anyone want anything else?
if (VarDecl *VD = dyn_cast<VarDecl>(*D))
if (VD->getIdentifier() &&
*VD->getIdentifier()->getNameStart() == 'x') {
Decl *Merged = Importer.Import(VD);
if (Merged)
Merged->dump();
}
}
delete Unit;
}
return AdaptedAction->ExecuteAction();
}
void ASTMergeAction::EndSourceFileAction() {
return AdaptedAction->EndSourceFileAction();
}
ASTMergeAction::ASTMergeAction(FrontendAction *AdaptedAction,
std::string *ASTFiles, unsigned NumASTFiles)
: AdaptedAction(AdaptedAction), ASTFiles(ASTFiles, ASTFiles + NumASTFiles) {
assert(AdaptedAction && "ASTMergeAction needs an action to adapt");
}
ASTMergeAction::~ASTMergeAction() {
delete AdaptedAction;
}
bool ASTMergeAction::usesPreprocessorOnly() const {
return AdaptedAction->usesPreprocessorOnly();
}
bool ASTMergeAction::usesCompleteTranslationUnit() {
return AdaptedAction->usesCompleteTranslationUnit();
}
bool ASTMergeAction::hasPCHSupport() const {
return AdaptedAction->hasPCHSupport();
}
bool ASTMergeAction::hasASTSupport() const {
return AdaptedAction->hasASTSupport();
}
bool ASTMergeAction::hasCodeCompletionSupport() const {
return AdaptedAction->hasCodeCompletionSupport();
}
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