clang-tools-extra/clang-tidy/misc/RedundantExpressionCheck.h

   1 //===--- RedundantExpressionCheck.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_MISC_REDUNDANT_EXPRESSION_H
  10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_REDUNDANT_EXPRESSION_H
  11
  12 #include "../ClangTidyCheck.h"
  13
  14 namespace clang::tidy::misc {
  15
  16 /// The checker detects expressions that are redundant, because they contain
  17 /// ineffective, useless parts.
  18 ///
  19 /// For the user-facing documentation see:
  20 /// http://clang.llvm.org/extra/clang-tidy/checks/misc/redundant-expression.html
  21 class RedundantExpressionCheck : public ClangTidyCheck {
  22 public:
  23   RedundantExpressionCheck(StringRef Name, ClangTidyContext *Context)
  24       : ClangTidyCheck(Name, Context) {}
  25   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
  26   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
  27
  28 private:
  29   void checkArithmeticExpr(const ast_matchers::MatchFinder::MatchResult &R);
  30   void checkBitwiseExpr(const ast_matchers::MatchFinder::MatchResult &R);
  31   void checkRelationalExpr(const ast_matchers::MatchFinder::MatchResult &R);
  32 };
  33
  34 } // namespace clang::tidy::misc
  35
  36 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_REDUNDANT_EXPRESSION_H