forked from OSchip/llvm-project
81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
//===-- UseNullptr/UseNullptr.cpp - C++11 nullptr migration ---------------===//
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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 UseNullptrTransform
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/// class.
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///
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//===----------------------------------------------------------------------===//
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#include "UseNullptr.h"
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#include "NullptrActions.h"
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#include "NullptrMatchers.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Tooling/Refactoring.h"
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#include "clang/Tooling/Tooling.h"
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using clang::ast_matchers::MatchFinder;
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using namespace clang::tooling;
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using namespace clang;
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namespace cl = llvm::cl;
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static cl::opt<std::string>
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UserNullMacroNames("user-null-macros",
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cl::desc("Comma-separated list of user-defined "
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"macro names that behave like NULL"),
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cl::cat(TransformsOptionsCategory), cl::init(""));
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int UseNullptrTransform::apply(const CompilationDatabase &Database,
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const std::vector<std::string> &SourcePaths) {
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ClangTool UseNullptrTool(Database, SourcePaths);
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unsigned AcceptedChanges = 0;
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llvm::SmallVector<llvm::StringRef, 1> MacroNames;
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if (!UserNullMacroNames.empty()) {
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llvm::StringRef S = UserNullMacroNames;
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S.split(MacroNames, ",");
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}
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MatchFinder Finder;
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NullptrFixer Fixer(AcceptedChanges, MacroNames, /*Owner=*/ *this);
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Finder.addMatcher(makeCastSequenceMatcher(), &Fixer);
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if (int result = UseNullptrTool.run(createActionFactory(Finder).get())) {
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llvm::errs() << "Error encountered during translation.\n";
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return result;
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}
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setAcceptedChanges(AcceptedChanges);
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return 0;
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}
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namespace {
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struct UseNullptrFactory : TransformFactory {
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UseNullptrFactory() {
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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(12, 1);
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Since.Msvc = Version(10);
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}
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Transform *createTransform(const TransformOptions &Opts) override {
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return new UseNullptrTransform(Opts);
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}
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};
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} // namespace
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// Register the factory using this statically initialized variable.
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static TransformFactoryRegistry::Add<UseNullptrFactory>
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X("use-nullptr", "Make use of nullptr keyword 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 UseNullptrTransformAnchorSource = 0;
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