clang-tidy/bugprone/MisplacedWideningCastCheck.h

0001 //===--- MisplacedWideningCastCheck.h - clang-tidy---------------*- C++ -*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MISPLACEDWIDENINGCASTCHECK_H
0010 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MISPLACEDWIDENINGCASTCHECK_H
0011
0012 #include "../ClangTidyCheck.h"
0013
0014 namespace clang::tidy::bugprone {
0015
0016 /// Find casts of calculation results to bigger type. Typically from int to
0017 /// long. If the intention of the cast is to avoid loss of precision then
0018 /// the cast is misplaced, and there can be loss of precision. Otherwise
0019 /// such cast is ineffective.
0020 ///
0021 /// There is one option:
0022 ///
0023 ///   - `CheckImplicitCasts`: Whether to check implicit casts as well which may
0024 //      be the most common case. Enabled by default.
0025 ///
0026 /// For the user-facing documentation see:
0027 /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone/misplaced-widening-cast.html
0028 class MisplacedWideningCastCheck : public ClangTidyCheck {
0029 public:
0030   MisplacedWideningCastCheck(StringRef Name, ClangTidyContext *Context);
0031   void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
0032   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
0033   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
0034
0035 private:
0036   const bool CheckImplicitCasts;
0037 };
0038
0039 } // namespace clang::tidy::bugprone
0040
0041 #endif