clang-tools-extra/clang-tidy/bugprone/MisplacedWideningCastCheck.h

   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