mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-23 13:35:42 -04:00
811663eb11
into another AST, including their include history. Here's an example
error that involves a conflict merging a variable with different types
in two translation units (diagnosed in the third AST context into
which everything is merged).
/Volumes/Data/dgregor/Projects/llvm/tools/clang/test/ASTMerge/Inputs/var2.c:3:5:
error: external variable 'x2' declared with incompatible types in
different translation units ('int' vs. 'double')
int x2;
^
In file included from
/Volumes/Data/dgregor/Projects/llvm/tools/clang/test/ASTMerge/Inputs/var1.c:3:
/Volumes/Data/dgregor/Projects/llvm/tools/clang/test/ASTMerge/Inputs/var1.h:1:8:
note: declared here with type 'double'
double x2;
^
Although we maintain include history, we do not maintain macro
instantiation history across a merge. Instead, we map down to the
spelling location (for now!).
llvm-svn: 95732
108 lines
3.7 KiB
C++
108 lines
3.7 KiB
C++
//===-- ASTMerge.cpp - AST Merging Frontent Action --------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/ASTUnit.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/ASTDiagnostic.h"
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#include "clang/AST/ASTImporter.h"
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using namespace clang;
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ASTConsumer *ASTMergeAction::CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef InFile) {
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return AdaptedAction->CreateASTConsumer(CI, InFile);
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}
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bool ASTMergeAction::BeginSourceFileAction(CompilerInstance &CI,
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llvm::StringRef Filename) {
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// FIXME: This is a hack. We need a better way to communicate the
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// AST file, compiler instance, and file name than member variables
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// of FrontendAction.
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AdaptedAction->setCurrentFile(getCurrentFile(), takeCurrentASTUnit());
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AdaptedAction->setCompilerInstance(&CI);
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return AdaptedAction->BeginSourceFileAction(CI, Filename);
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}
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void ASTMergeAction::ExecuteAction() {
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CompilerInstance &CI = getCompilerInstance();
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CI.getDiagnostics().SetArgToStringFn(&FormatASTNodeDiagnosticArgument,
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&CI.getASTContext());
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for (unsigned I = 0, N = ASTFiles.size(); I != N; ++I) {
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Diagnostic ASTDiags(CI.getDiagnostics().getClient());
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ASTUnit *Unit = ASTUnit::LoadFromPCHFile(ASTFiles[I], ASTDiags,
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false, true);
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if (!Unit)
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continue;
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ASTDiags.SetArgToStringFn(&FormatASTNodeDiagnosticArgument,
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&Unit->getASTContext());
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ASTImporter Importer(CI.getASTContext(),
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CI.getFileManager(),
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CI.getDiagnostics(),
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Unit->getASTContext(),
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Unit->getFileManager(),
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ASTDiags);
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TranslationUnitDecl *TU = Unit->getASTContext().getTranslationUnitDecl();
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for (DeclContext::decl_iterator D = TU->decls_begin(),
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DEnd = TU->decls_end();
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D != DEnd; ++D) {
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// FIXME: We only merge variables whose names start with x. Why
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// would anyone want anything else?
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if (VarDecl *VD = dyn_cast<VarDecl>(*D))
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if (VD->getIdentifier() &&
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*VD->getIdentifier()->getNameStart() == 'x') {
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Decl *Merged = Importer.Import(VD);
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(void)Merged;
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}
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}
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delete Unit;
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}
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return AdaptedAction->ExecuteAction();
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}
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void ASTMergeAction::EndSourceFileAction() {
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return AdaptedAction->EndSourceFileAction();
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}
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ASTMergeAction::ASTMergeAction(FrontendAction *AdaptedAction,
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std::string *ASTFiles, unsigned NumASTFiles)
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: AdaptedAction(AdaptedAction), ASTFiles(ASTFiles, ASTFiles + NumASTFiles) {
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assert(AdaptedAction && "ASTMergeAction needs an action to adapt");
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}
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ASTMergeAction::~ASTMergeAction() {
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delete AdaptedAction;
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}
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bool ASTMergeAction::usesPreprocessorOnly() const {
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return AdaptedAction->usesPreprocessorOnly();
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}
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bool ASTMergeAction::usesCompleteTranslationUnit() {
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return AdaptedAction->usesCompleteTranslationUnit();
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}
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bool ASTMergeAction::hasPCHSupport() const {
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return AdaptedAction->hasPCHSupport();
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}
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bool ASTMergeAction::hasASTSupport() const {
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return AdaptedAction->hasASTSupport();
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}
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bool ASTMergeAction::hasCodeCompletionSupport() const {
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return AdaptedAction->hasCodeCompletionSupport();
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}
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