| //===-- UseNullptr/UseNullptr.cpp - C++11 nullptr 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 UseNullptrTransform |
| /// class. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "UseNullptr.h" |
| #include "NullptrActions.h" |
| #include "NullptrMatchers.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; |
| namespace cl = llvm::cl; |
| |
| static cl::opt<std::string> |
| UserNullMacroNames("user-null-macros", |
| cl::desc("Comma-separated list of user-defined " |
| "macro names that behave like NULL"), |
| cl::cat(TransformsOptionsCategory), cl::init("")); |
| |
| int UseNullptrTransform::apply(const CompilationDatabase &Database, |
| const std::vector<std::string> &SourcePaths) { |
| ClangTool UseNullptrTool(Database, SourcePaths); |
| |
| unsigned AcceptedChanges = 0; |
| |
| llvm::SmallVector<llvm::StringRef, 1> MacroNames; |
| if (!UserNullMacroNames.empty()) { |
| llvm::StringRef S = UserNullMacroNames; |
| S.split(MacroNames, ","); |
| } |
| MatchFinder Finder; |
| NullptrFixer Fixer(AcceptedChanges, MacroNames, /*Owner=*/ *this); |
| |
| Finder.addMatcher(makeCastSequenceMatcher(), &Fixer); |
| |
| if (int result = UseNullptrTool.run(createActionFactory(Finder))) { |
| llvm::errs() << "Error encountered during translation.\n"; |
| return result; |
| } |
| |
| setAcceptedChanges(AcceptedChanges); |
| |
| return 0; |
| } |
| |
| struct UseNullptrFactory : TransformFactory { |
| UseNullptrFactory() { |
| Since.Clang = Version(3, 0); |
| Since.Gcc = Version(4, 6); |
| Since.Icc = Version(12, 1); |
| Since.Msvc = Version(10); |
| } |
| |
| Transform *createTransform(const TransformOptions &Opts) override { |
| return new UseNullptrTransform(Opts); |
| } |
| }; |
| |
| // Register the factory using this statically initialized variable. |
| static TransformFactoryRegistry::Add<UseNullptrFactory> |
| X("use-nullptr", "Make use of nullptr keyword where possible"); |
| |
| // This anchor is used to force the linker to link in the generated object file |
| // and thus register the factory. |
| volatile int UseNullptrTransformAnchorSource = 0; |