1 //===--- MisplacedWideningCastCheck.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_BUGPRONE_MISPLACEDWIDENINGCASTCHECK_H 10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MISPLACEDWIDENINGCASTCHECK_H 11 12 #include "../ClangTidyCheck.h" 13 14 namespace clang { 15 namespace tidy { 16 namespace bugprone { 17 18 /// Find casts of calculation results to bigger type. Typically from int to 19 /// long. If the intention of the cast is to avoid loss of precision then 20 /// the cast is misplaced, and there can be loss of precision. Otherwise 21 /// such cast is ineffective. 22 /// 23 /// There is one option: 24 /// 25 /// - `CheckImplicitCasts`: Whether to check implicit casts as well which may 26 // be the most common case. Enabled by default. 27 /// 28 /// For the user-facing documentation see: 29 /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-misplaced-widening-cast.html 30 class MisplacedWideningCastCheck : public ClangTidyCheck { 31 public: 32 MisplacedWideningCastCheck(StringRef Name, ClangTidyContext *Context); 33 void storeOptions(ClangTidyOptions::OptionMap &Opts) override; 34 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 35 void check(const ast_matchers::MatchFinder::MatchResult &Result) override; 36 37 private: 38 const bool CheckImplicitCasts; 39 }; 40 41 } // namespace bugprone 42 } // namespace tidy 43 } // namespace clang 44 45 #endif 46