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//===--- RedundantVoidArgCheck.h - clang-tidy --------------------*- C++-*-===//
//
// 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_REDUNDANT_VOID_ARG_CHECK_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
#include "../ClangTidyCheck.h"
#include "clang/Lex/Token.h"
#include <string>
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;
}
void registerMatchers(ast_matchers::MatchFinder *Finder) override;
void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
private:
void processFunctionDecl(const ast_matchers::MatchFinder::MatchResult &Result,
const FunctionDecl *Function);
void
processTypedefNameDecl(const ast_matchers::MatchFinder::MatchResult &Result,
const TypedefNameDecl *Typedef);
void processFieldDecl(const ast_matchers::MatchFinder::MatchResult &Result,
const FieldDecl *Member);
void processVarDecl(const ast_matchers::MatchFinder::MatchResult &Result,
const VarDecl *Var);
void
processNamedCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
const CXXNamedCastExpr *NamedCast);
void
processExplicitCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
const ExplicitCastExpr *ExplicitCast);
void processLambdaExpr(const ast_matchers::MatchFinder::MatchResult &Result,
const LambdaExpr *Lambda);
void
removeVoidArgumentTokens(const ast_matchers::MatchFinder::MatchResult &Result,
SourceRange Range, StringRef GrammarLocation);
void removeVoidToken(Token VoidToken, StringRef Diagnostic);
};
} // namespace clang::tidy::modernize
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
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