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//===-- LoopConvert/LoopConvert.cpp - C++11 for-loop migration ------------===//
//
// 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 implementation of the LoopConvertTransform
/// class.
///
//===----------------------------------------------------------------------===//
#include "LoopConvert.h"
#include "LoopActions.h"
#include "LoopMatchers.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Tooling/Refactoring.h"
#include "clang/Tooling/Tooling.h"
using clang::ast_matchers::MatchFinder;
using namespace clang::tooling;
using namespace clang;
int LoopConvertTransform::apply(const CompilationDatabase &Database,
const std::vector<std::string> &SourcePaths) {
ClangTool LoopTool(Database, SourcePaths);
unsigned AcceptedChanges = 0;
unsigned DeferredChanges = 0;
unsigned RejectedChanges = 0;
TUInfo.reset(new TUTrackingInfo);
MatchFinder Finder;
LoopFixer ArrayLoopFixer(*TUInfo, &AcceptedChanges, &DeferredChanges,
&RejectedChanges, Options().MaxRiskLevel, LFK_Array,
/*Owner=*/ *this);
Finder.addMatcher(makeArrayLoopMatcher(), &ArrayLoopFixer);
LoopFixer IteratorLoopFixer(*TUInfo, &AcceptedChanges, &DeferredChanges,
&RejectedChanges, Options().MaxRiskLevel,
LFK_Iterator, /*Owner=*/ *this);
Finder.addMatcher(makeIteratorLoopMatcher(), &IteratorLoopFixer);
LoopFixer PseudoarrrayLoopFixer(*TUInfo, &AcceptedChanges, &DeferredChanges,
&RejectedChanges, Options().MaxRiskLevel,
LFK_PseudoArray, /*Owner=*/ *this);
Finder.addMatcher(makePseudoArrayLoopMatcher(), &PseudoarrrayLoopFixer);
if (int result = LoopTool.run(createActionFactory(Finder))) {
llvm::errs() << "Error encountered during translation.\n";
return result;
}
setAcceptedChanges(AcceptedChanges);
setRejectedChanges(RejectedChanges);
setDeferredChanges(DeferredChanges);
return 0;
}
bool
LoopConvertTransform::handleBeginSource(clang::CompilerInstance &CI,
llvm::StringRef Filename) {
// Reset and initialize per-TU tracking structures.
TUInfo->reset();
return Transform::handleBeginSource(CI, Filename);
}
struct LoopConvertFactory : TransformFactory {
LoopConvertFactory() {
Since.Clang = Version(3, 0);
Since.Gcc = Version(4, 6);
Since.Icc = Version(13);
Since.Msvc = Version(11);
}
Transform *createTransform(const TransformOptions &Opts) override {
return new LoopConvertTransform(Opts);
}
};
// Register the factory using this statically initialized variable.
static TransformFactoryRegistry::Add<LoopConvertFactory>
X("loop-convert", "Make use of range-based for loops where possible");
// This anchor is used to force the linker to link in the generated object file
// and thus register the factory.
volatile int LoopConvertTransformAnchorSource = 0;
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