clang-tools 20.0.0git
ForwardingReferenceOverloadCheck.h
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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
28public:
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
llvm::SmallString< 256U > Name
Base class for all clang-tidy checks.
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
The checker looks for constructors that can act as copy or move constructors through their forwarding...
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
bool isLanguageVersionSupported(const LangOptions &LangOpts) const override
Override this to disable registering matchers and PP callbacks if an invalid language version is bein...
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
ForwardingReferenceOverloadCheck(StringRef Name, ClangTidyContext *Context)