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1//===----------------------------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MACROPARENTHESESCHECK_H10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MACROPARENTHESESCHECK_H11 12#include "../ClangTidyCheck.h"13 14namespace clang::tidy::bugprone {15 16/// Finds macros that can have unexpected behaviour due to missing parentheses.17///18/// Macros are expanded by the preprocessor as-is. As a result, there can be19/// unexpected behaviour; operators may be evaluated in unexpected order and20/// unary operators may become binary operators, etc.21///22/// When the replacement list has an expression, it is recommended to surround23/// it with parentheses. This ensures that the macro result is evaluated24/// completely before it is used.25///26/// It is also recommended to surround macro arguments in the replacement list27/// with parentheses. This ensures that the argument value is calculated28/// properly.29class MacroParenthesesCheck : public ClangTidyCheck {30public:31 MacroParenthesesCheck(StringRef Name, ClangTidyContext *Context)32 : ClangTidyCheck(Name, Context) {}33 void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,34 Preprocessor *ModuleExpanderPP) override;35};36 37} // namespace clang::tidy::bugprone38 39#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MACROPARENTHESESCHECK_H40