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//===--- MacroParenthesesCheck.h - clang-tidy--------------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "../ClangTidyCheck.h"
namespace clang {
namespace tidy {
namespace bugprone {
/// Finds macros that can have unexpected behaviour due to missing parentheses.
/// Macros are expanded by the preprocessor as-is. As a result, there can be
/// unexpected behaviour; operators may be evaluated in unexpected order and
/// unary operators may become binary operators, etc.
/// When the replacement list has an expression, it is recommended to surround
/// it with parentheses. This ensures that the macro result is evaluated
/// completely before it is used.
/// It is also recommended to surround macro arguments in the replacement list
/// with parentheses. This ensures that the argument value is calculated
/// properly.
class MacroParenthesesCheck : public ClangTidyCheck {
MacroParenthesesCheck(StringRef Name, ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,
Preprocessor *ModuleExpanderPP) override;
} // namespace bugprone
} // namespace tidy
} // namespace clang