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//===-- AddOverride/AddOverride.cpp - add C++11 override ------------------===//
//
// 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 AddOverrideTransform
/// class.
///
//===----------------------------------------------------------------------===//
#include "AddOverride.h"
#include "AddOverrideActions.h"
#include "AddOverrideMatchers.h"
#include "clang/Frontend/CompilerInstance.h"
using clang::ast_matchers::MatchFinder;
using namespace clang::tooling;
using namespace clang;
namespace cl = llvm::cl;
static cl::opt<bool> DetectMacros(
"override-macros",
cl::desc("Detect and use macros that expand to the 'override' keyword."),
cl::cat(TransformsOptionsCategory));
int AddOverrideTransform::apply(const CompilationDatabase &Database,
const std::vector<std::string> &SourcePaths) {
ClangTool AddOverrideTool(Database, SourcePaths);
unsigned AcceptedChanges = 0;
MatchFinder Finder;
AddOverrideFixer Fixer(AcceptedChanges, DetectMacros,
/*Owner=*/ *this);
Finder.addMatcher(makeCandidateForOverrideAttrMatcher(), &Fixer);
// Make Fixer available to handleBeginSource().
this->Fixer = &Fixer;
if (int result = AddOverrideTool.run(createActionFactory(Finder).get())) {
llvm::errs() << "Error encountered during translation.\n";
return result;
}
setAcceptedChanges(AcceptedChanges);
return 0;
}
bool AddOverrideTransform::handleBeginSource(clang::CompilerInstance &CI,
llvm::StringRef Filename) {
assert(Fixer != nullptr && "Fixer must be set");
Fixer->setPreprocessor(CI.getPreprocessor());
return Transform::handleBeginSource(CI, Filename);
}
namespace {
struct AddOverrideFactory : TransformFactory {
AddOverrideFactory() {
// if detecting macros is enabled, do not impose requirements on the
// compiler. It is assumed that the macros use is "C++11-aware", meaning it
// won't expand to override if the compiler doesn't support the specifier.
if (!DetectMacros) {
Since.Clang = Version(3, 0);
Since.Gcc = Version(4, 7);
Since.Icc = Version(14);
Since.Msvc = Version(8);
}
}
Transform *createTransform(const TransformOptions &Opts) override {
return new AddOverrideTransform(Opts);
}
};
} // namespace
// Register the factory using this statically initialized variable.
static TransformFactoryRegistry::Add<AddOverrideFactory>
X("add-override", "Make use of override specifier where possible");
// This anchor is used to force the linker to link in the generated object file
// and thus register the factory.
volatile int AddOverrideTransformAnchorSource = 0;
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