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//===-- Core/Transform.cpp - Transform Base Class Def'n -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief This file provides the definition for the base Transform class from
/// which all transforms must subclass.
///
//===----------------------------------------------------------------------===//
#include "Core/Transform.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/STLExtras.h"
template class llvm::Registry<TransformFactory>;
using namespace clang;
llvm::cl::OptionCategory TransformsOptionsCategory("Transforms' options");
namespace {
using namespace tooling;
using namespace ast_matchers;
/// \brief Custom FrontendActionFactory to produce FrontendActions that simply
/// forward (Begin|End)SourceFileAction calls to a given Transform.
class ActionFactory : public clang::tooling::FrontendActionFactory {
public:
ActionFactory(MatchFinder &Finder, Transform &Owner)
: Finder(Finder), Owner(Owner) {}
virtual FrontendAction *create() override {
return new FactoryAdaptor(Finder, Owner);
}
private:
class FactoryAdaptor : public ASTFrontendAction {
public:
FactoryAdaptor(MatchFinder &Finder, Transform &Owner)
: Finder(Finder), Owner(Owner) {}
std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &,
StringRef) {
return Finder.newASTConsumer();
}
virtual bool BeginSourceFileAction(CompilerInstance &CI,
StringRef Filename) override {
if (!ASTFrontendAction::BeginSourceFileAction(CI, Filename))
return false;
return Owner.handleBeginSource(CI, Filename);
}
virtual void EndSourceFileAction() override {
Owner.handleEndSource();
return ASTFrontendAction::EndSourceFileAction();
}
private:
MatchFinder &Finder;
Transform &Owner;
};
MatchFinder &Finder;
Transform &Owner;
};
} // namespace
Transform::Transform(llvm::StringRef Name, const TransformOptions &Options)
: Name(Name), GlobalOptions(Options) {
Reset();
}
Transform::~Transform() {}
bool Transform::isFileModifiable(const SourceManager &SM,
const SourceLocation &Loc) const {
if (SM.isWrittenInMainFile(Loc))
return true;
const FileEntry *FE = SM.getFileEntryForID(SM.getFileID(Loc));
if (!FE)
return false;
return GlobalOptions.ModifiableFiles.isFileIncluded(FE->getName());
}
bool Transform::handleBeginSource(CompilerInstance &CI, StringRef Filename) {
CurrentSource = Filename;
if (Options().EnableTiming) {
Timings.push_back(std::make_pair(Filename.str(), llvm::TimeRecord()));
Timings.back().second -= llvm::TimeRecord::getCurrentTime(true);
}
return true;
}
void Transform::handleEndSource() {
CurrentSource.clear();
if (Options().EnableTiming)
Timings.back().second += llvm::TimeRecord::getCurrentTime(false);
}
void Transform::addTiming(llvm::StringRef Label, llvm::TimeRecord Duration) {
Timings.push_back(std::make_pair(Label.str(), Duration));
}
bool
Transform::addReplacementForCurrentTU(const clang::tooling::Replacement &R) {
if (CurrentSource.empty())
return false;
TranslationUnitReplacements &TU = Replacements[CurrentSource];
if (TU.MainSourceFile.empty())
TU.MainSourceFile = CurrentSource;
TU.Replacements.push_back(R);
return true;
}
FrontendActionFactory *Transform::createActionFactory(MatchFinder &Finder) {
return new ActionFactory(Finder, /*Owner=*/ *this);
}
Version Version::getFromString(llvm::StringRef VersionStr) {
llvm::StringRef MajorStr, MinorStr;
Version V;
std::tie(MajorStr, MinorStr) = VersionStr.split('.');
if (!MinorStr.empty()) {
llvm::StringRef Ignore;
std::tie(MinorStr, Ignore) = MinorStr.split('.');
if (MinorStr.getAsInteger(10, V.Minor))
return Version();
}
if (MajorStr.getAsInteger(10, V.Major))
return Version();
return V;
}
TransformFactory::~TransformFactory() {}
namespace {
bool versionSupported(Version Required, Version AvailableSince) {
// null version, means no requirements, means supported
if (Required.isNull())
return true;
return Required >= AvailableSince;
}
} // end anonymous namespace
bool TransformFactory::supportsCompilers(CompilerVersions Required) const {
return versionSupported(Required.Clang, Since.Clang) &&
versionSupported(Required.Gcc, Since.Gcc) &&
versionSupported(Required.Icc, Since.Icc) &&
versionSupported(Required.Msvc, Since.Msvc);
}
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