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//===--- MacroParenthesesCheck.h - clang-tidy--------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MACROPARENTHESESCHECK_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MACROPARENTHESESCHECK_H
#include "../ClangTidy.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 {
public:
MacroParenthesesCheck(StringRef Name, ClangTidyContext *Context)
: ClangTidyCheck(Name, Context) {}
void registerPPCallbacks(CompilerInstance &Compiler) override;
};
} // namespace bugprone
} // namespace tidy
} // namespace clang
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_MACROPARENTHESESCHECK_H
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