forked from OSchip/llvm-project
77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
//===-- PassByValue.cpp ---------------------------------------------------===//
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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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///
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/// \file
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/// \brief This file provides the implementation of the ReplaceAutoPtrTransform
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/// class.
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///
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//===----------------------------------------------------------------------===//
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#include "PassByValue.h"
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#include "PassByValueActions.h"
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#include "PassByValueMatchers.h"
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using namespace clang;
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using namespace clang::tooling;
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using namespace clang::ast_matchers;
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int PassByValueTransform::apply(const tooling::CompilationDatabase &Database,
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const std::vector<std::string> &SourcePaths) {
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ClangTool Tool(Database, SourcePaths);
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unsigned AcceptedChanges = 0;
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unsigned RejectedChanges = 0;
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MatchFinder Finder;
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ConstructorParamReplacer Replacer(AcceptedChanges, RejectedChanges,
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/*Owner=*/ *this);
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Finder.addMatcher(makePassByValueCtorParamMatcher(), &Replacer);
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// make the replacer available to handleBeginSource()
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this->Replacer = &Replacer;
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if (Tool.run(createActionFactory(Finder))) {
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llvm::errs() << "Error encountered during translation.\n";
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return 1;
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}
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setAcceptedChanges(AcceptedChanges);
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setRejectedChanges(RejectedChanges);
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return 0;
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}
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bool PassByValueTransform::handleBeginSource(CompilerInstance &CI,
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llvm::StringRef Filename) {
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assert(Replacer && "Replacer not set");
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IncludeManager.reset(new IncludeDirectives(CI));
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Replacer->setIncludeDirectives(IncludeManager.get());
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return Transform::handleBeginSource(CI, Filename);
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}
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struct PassByValueFactory : TransformFactory {
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PassByValueFactory() {
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// Based on the Replace Auto-Ptr Transform that is also using std::move().
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Since.Clang = Version(3, 0);
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Since.Gcc = Version(4, 6);
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Since.Icc = Version(13);
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Since.Msvc = Version(11);
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}
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Transform *createTransform(const TransformOptions &Opts) override {
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return new PassByValueTransform(Opts);
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}
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};
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// Register the factory using this statically initialized variable.
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static TransformFactoryRegistry::Add<PassByValueFactory>
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X("pass-by-value", "Pass parameters by value where possible");
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// This anchor is used to force the linker to link in the generated object file
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// and thus register the factory.
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volatile int PassByValueTransformAnchorSource = 0;
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