clang-tools-extra/clang-tidy/performance/FasterStringFindCheck.h

   1 //===--- FasterStringFindCheck.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_PERFORMANCE_FASTER_STRING_FIND_H
  10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_FASTER_STRING_FIND_H
  11
  12 #include "../ClangTidyCheck.h"
  13
  14 #include <string>
  15 #include <vector>
  16
  17 namespace clang::tidy::performance {
  18
  19 /// Optimize calls to std::string::find() and friends when the needle passed is
  20 /// a single character string literal.
  21 /// The character literal overload is more efficient.
  22 ///
  23 /// For the user-facing documentation see:
  24 /// http://clang.llvm.org/extra/clang-tidy/checks/performance/faster-string-find.html
  25 class FasterStringFindCheck : public ClangTidyCheck {
  26 public:
  27   FasterStringFindCheck(StringRef Name, ClangTidyContext *Context);
  28   bool isLanguageVersionSupported(const LangOptions &LangOpts) const override{
  29     return LangOpts.CPlusPlus;
  30   }
  31   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
  32   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
  33   void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
  34
  35 private:
  36   const std::vector<StringRef> StringLikeClasses;
  37 };
  38
  39 } // namespace clang::tidy::performance
  40
  41 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_FASTER_STRING_FIND_H