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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 {
15 namespace tidy {
16 namespace misc {
17 
18 /// The checker detects expressions that are redundant, because they contain
19 /// ineffective, useless parts.
20 ///
21 /// For the user-facing documentation see:
22 /// http://clang.llvm.org/extra/clang-tidy/checks/misc-redundant-expression.html
23 class RedundantExpressionCheck : public ClangTidyCheck {
24 public:
RedundantExpressionCheck(StringRef Name,ClangTidyContext * Context)25   RedundantExpressionCheck(StringRef Name, ClangTidyContext *Context)
26       : ClangTidyCheck(Name, Context) {}
27   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
28   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
29 
30 private:
31   void checkArithmeticExpr(const ast_matchers::MatchFinder::MatchResult &R);
32   void checkBitwiseExpr(const ast_matchers::MatchFinder::MatchResult &R);
33   void checkRelationalExpr(const ast_matchers::MatchFinder::MatchResult &R);
34 };
35 
36 } // namespace misc
37 } // namespace tidy
38 } // namespace clang
39 
40 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_REDUNDANT_EXPRESSION_H
41