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