teak-llvm/clang/lib/Frontend/ASTMerge.cpp
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00

113 lines
4.1 KiB
C++

//===-- ASTMerge.cpp - AST Merging Frontend Action --------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "clang/Frontend/ASTUnit.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTDiagnostic.h"
#include "clang/AST/ASTImporter.h"
#include "clang/AST/ASTImporterLookupTable.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/FrontendActions.h"
using namespace clang;
std::unique_ptr<ASTConsumer>
ASTMergeAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return AdaptedAction->CreateASTConsumer(CI, InFile);
}
bool ASTMergeAction::BeginSourceFileAction(CompilerInstance &CI) {
// 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->setCurrentInput(getCurrentInput(), takeCurrentASTUnit());
AdaptedAction->setCompilerInstance(&CI);
return AdaptedAction->BeginSourceFileAction(CI);
}
void ASTMergeAction::ExecuteAction() {
CompilerInstance &CI = getCompilerInstance();
CI.getDiagnostics().getClient()->BeginSourceFile(
CI.getASTContext().getLangOpts());
CI.getDiagnostics().SetArgToStringFn(&FormatASTNodeDiagnosticArgument,
&CI.getASTContext());
IntrusiveRefCntPtr<DiagnosticIDs>
DiagIDs(CI.getDiagnostics().getDiagnosticIDs());
ASTImporterLookupTable LookupTable(
*CI.getASTContext().getTranslationUnitDecl());
for (unsigned I = 0, N = ASTFiles.size(); I != N; ++I) {
IntrusiveRefCntPtr<DiagnosticsEngine>
Diags(new DiagnosticsEngine(DiagIDs, &CI.getDiagnosticOpts(),
new ForwardingDiagnosticConsumer(
*CI.getDiagnostics().getClient()),
/*ShouldOwnClient=*/true));
std::unique_ptr<ASTUnit> Unit = ASTUnit::LoadFromASTFile(
ASTFiles[I], CI.getPCHContainerReader(), ASTUnit::LoadEverything, Diags,
CI.getFileSystemOpts(), false);
if (!Unit)
continue;
ASTImporter Importer(CI.getASTContext(), CI.getFileManager(),
Unit->getASTContext(), Unit->getFileManager(),
/*MinimalImport=*/false, &LookupTable);
TranslationUnitDecl *TU = Unit->getASTContext().getTranslationUnitDecl();
for (auto *D : TU->decls()) {
// Don't re-import __va_list_tag, __builtin_va_list.
if (const auto *ND = dyn_cast<NamedDecl>(D))
if (IdentifierInfo *II = ND->getIdentifier())
if (II->isStr("__va_list_tag") || II->isStr("__builtin_va_list"))
continue;
Decl *ToD = Importer.Import(D);
if (ToD) {
DeclGroupRef DGR(ToD);
CI.getASTConsumer().HandleTopLevelDecl(DGR);
}
}
}
AdaptedAction->ExecuteAction();
CI.getDiagnostics().getClient()->EndSourceFile();
}
void ASTMergeAction::EndSourceFileAction() {
return AdaptedAction->EndSourceFileAction();
}
ASTMergeAction::ASTMergeAction(std::unique_ptr<FrontendAction> adaptedAction,
ArrayRef<std::string> ASTFiles)
: AdaptedAction(std::move(adaptedAction)), ASTFiles(ASTFiles.begin(), ASTFiles.end()) {
assert(AdaptedAction && "ASTMergeAction needs an action to adapt");
}
ASTMergeAction::~ASTMergeAction() {
}
bool ASTMergeAction::usesPreprocessorOnly() const {
return AdaptedAction->usesPreprocessorOnly();
}
TranslationUnitKind ASTMergeAction::getTranslationUnitKind() {
return AdaptedAction->getTranslationUnitKind();
}
bool ASTMergeAction::hasPCHSupport() const {
return AdaptedAction->hasPCHSupport();
}
bool ASTMergeAction::hasASTFileSupport() const {
return AdaptedAction->hasASTFileSupport();
}
bool ASTMergeAction::hasCodeCompletionSupport() const {
return AdaptedAction->hasCodeCompletionSupport();
}