1 //===--- ShrinkToFitCheck.h - clang-tidy-------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_SHRINKTOFITCHECK_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_SHRINKTOFITCHECK_H
11 
12 #include "../ClangTidyCheck.h"
13 
14 namespace clang::tidy::modernize {
15 
16 /// Replace copy and swap tricks on shrinkable containers with the
17 /// `shrink_to_fit()` method call.
18 ///
19 /// The `shrink_to_fit()` method is more readable and more effective than
20 /// the copy and swap trick to reduce the capacity of a shrinkable container.
21 /// Note that, the `shrink_to_fit()` method is only available in C++11 and up.
22 class ShrinkToFitCheck : public ClangTidyCheck {
23 public:
ShrinkToFitCheck(StringRef Name,ClangTidyContext * Context)24   ShrinkToFitCheck(StringRef Name, ClangTidyContext *Context)
25       : ClangTidyCheck(Name, Context) {}
isLanguageVersionSupported(const LangOptions & LangOpts)26   bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
27     return LangOpts.CPlusPlus11;
28   }
29   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
30   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
getCheckTraversalKind()31   std::optional<TraversalKind> getCheckTraversalKind() const override {
32     return TK_IgnoreUnlessSpelledInSource;
33   }
34 };
35 
36 } // namespace clang::tidy::modernize
37 
38 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_SHRINKTOFITCHECK_H
39