//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANTVOIDARGCHECK_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANTVOIDARGCHECK_H

#include "../ClangTidyCheck.h"

namespace clang::tidy::modernize {

/// Find and remove redundant void argument lists.
///
/// Examples:
///   `int f(void);`                    becomes `int f();`
///   `int (*f(void))(void);`           becomes `int (*f())();`
///   `typedef int (*f_t(void))(void);` becomes `typedef int (*f_t())();`
///   `void (C::*p)(void);`             becomes `void (C::*p)();`
///   `C::C(void) {}`                   becomes `C::C() {}`
///   `C::~C(void) {}`                  becomes `C::~C() {}`
///
class RedundantVoidArgCheck : public ClangTidyCheck {
public:
  RedundantVoidArgCheck(StringRef Name, ClangTidyContext *Context)
      : ClangTidyCheck(Name, Context) {}

  bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
    return LangOpts.CPlusPlus || LangOpts.C23;
  }
  std::optional<TraversalKind> getCheckTraversalKind() const override {
    return TK_IgnoreUnlessSpelledInSource;
  }

  void registerMatchers(ast_matchers::MatchFinder *Finder) override;

  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
};

} // namespace clang::tidy::modernize

#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANTVOIDARGCHECK_H