1//===--- ForwardingReferenceOverloadCheck.h - clang-tidy---------*- C++ -*-===//
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-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_FORWARDINGREFERENCEOVERLOADCHECK_H
10#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_FORWARDINGREFERENCEOVERLOADCHECK_H
11
12#include "../ClangTidyCheck.h"
13
14namespace clang::tidy::bugprone {
15
16/// The checker looks for constructors that can act as copy or move constructors
17/// through their forwarding reference parameters. If a non const lvalue
18/// reference is passed to the constructor, the forwarding reference parameter
19/// can be a perfect match while the const reference parameter of the copy
20/// constructor can't. The forwarding reference constructor will be called,
21/// which can lead to confusion.
22/// For detailed description of this problem see: Scott Meyers, Effective Modern
23/// C++ Design, item 26.
24///
25/// For the user-facing documentation see:
26/// http://clang.llvm.org/extra/clang-tidy/checks/bugprone/forwarding-reference-overload.html
27class ForwardingReferenceOverloadCheck : public ClangTidyCheck {
28public:
29 ForwardingReferenceOverloadCheck(StringRef Name, ClangTidyContext *Context)
30 : ClangTidyCheck(Name, Context) {}
31 bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
32 return LangOpts.CPlusPlus11;
33 }
34 void registerMatchers(ast_matchers::MatchFinder *Finder) override;
35 void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
36};
37
38} // namespace clang::tidy::bugprone
39
40#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_FORWARDINGREFERENCEOVERLOADCHECK_H
41

source code of clang-tools-extra/clang-tidy/bugprone/ForwardingReferenceOverloadCheck.h