clang-tidy/modernize/ShrinkToFitCheck.h

0001 //===--- ShrinkToFitCheck.h - clang-tidy-------------------------*- C++ -*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_SHRINKTOFITCHECK_H
0010 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_SHRINKTOFITCHECK_H
0011
0012 #include "../ClangTidyCheck.h"
0013
0014 namespace clang::tidy::modernize {
0015
0016 /// Replace copy and swap tricks on shrinkable containers with the
0017 /// `shrink_to_fit()` method call.
0018 ///
0019 /// The `shrink_to_fit()` method is more readable and more effective than
0020 /// the copy and swap trick to reduce the capacity of a shrinkable container.
0021 /// Note that, the `shrink_to_fit()` method is only available in C++11 and up.
0022 class ShrinkToFitCheck : public ClangTidyCheck {
0023 public:
0024   ShrinkToFitCheck(StringRef Name, ClangTidyContext *Context)
0025       : ClangTidyCheck(Name, Context) {}
0026   bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
0027     return LangOpts.CPlusPlus11;
0028   }
0029   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
0030   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
0031   std::optional<TraversalKind> getCheckTraversalKind() const override {
0032     return TK_IgnoreUnlessSpelledInSource;
0033   }
0034 };
0035
0036 } // namespace clang::tidy::modernize
0037
0038 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_SHRINKTOFITCHECK_H