1 //===--- InefficientStringConcatenationCheck.h - clang-tidy-----------*- C++ 2 //-*-===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_INEFFICIENTSTRINGCONCATENATION_H 11 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_INEFFICIENTSTRINGCONCATENATION_H 12 13 #include "../ClangTidyCheck.h" 14 15 namespace clang::tidy::performance { 16 17 /// This check is to warn about the performance overhead arising from 18 /// concatenating strings, using the operator+, instead of operator+=. 19 /// 20 /// For the user-facing documentation see: 21 /// http://clang.llvm.org/extra/clang-tidy/checks/performance/inefficient-string-concatenation.html 22 class InefficientStringConcatenationCheck : public ClangTidyCheck { 23 public: 24 InefficientStringConcatenationCheck(StringRef Name, 25 ClangTidyContext *Context); isLanguageVersionSupported(const LangOptions & LangOpts)26 bool isLanguageVersionSupported(const LangOptions &LangOpts) const override { 27 return LangOpts.CPlusPlus; 28 } 29 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 30 void check(const ast_matchers::MatchFinder::MatchResult &Result) override; 31 void storeOptions(ClangTidyOptions::OptionMap &Opts) override; 32 33 private: 34 const bool StrictMode; 35 }; 36 37 } // namespace clang::tidy::performance 38 39 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_INEFFICIENTSTRINGCONCATENATION_H 40