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 14 namespace clang { 15 namespace tidy { 16 namespace bugprone { 17 18 /// The checker looks for constructors that can act as copy or move constructors 19 /// through their forwarding reference parameters. If a non const lvalue 20 /// reference is passed to the constructor, the forwarding reference parameter 21 /// can be a perfect match while the const reference parameter of the copy 22 /// constructor can't. The forwarding reference constructor will be called, 23 /// which can lead to confusion. 24 /// For detailed description of this problem see: Scott Meyers, Effective Modern 25 /// C++ Design, item 26. 26 /// 27 /// For the user-facing documentation see: 28 /// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-forwarding-reference-overload.html 29 class ForwardingReferenceOverloadCheck : public ClangTidyCheck { 30 public: ForwardingReferenceOverloadCheck(StringRef Name,ClangTidyContext * Context)31 ForwardingReferenceOverloadCheck(StringRef Name, ClangTidyContext *Context) 32 : ClangTidyCheck(Name, Context) {} isLanguageVersionSupported(const LangOptions & LangOpts)33 bool isLanguageVersionSupported(const LangOptions &LangOpts) const override { 34 return LangOpts.CPlusPlus11; 35 } 36 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 37 void check(const ast_matchers::MatchFinder::MatchResult &Result) override; 38 }; 39 40 } // namespace bugprone 41 } // namespace tidy 42 } // namespace clang 43 44 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_FORWARDINGREFERENCEOVERLOADCHECK_H 45