1 //===--- NoexceptMoveConstructorCheck.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_PERFORMANCE_NOEXCEPTMOVECONSTRUCTORCHECK_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_NOEXCEPTMOVECONSTRUCTORCHECK_H
11 
12 #include "../ClangTidyCheck.h"
13 
14 namespace clang {
15 namespace tidy {
16 namespace performance {
17 
18 /// The check flags user-defined move constructors and assignment operators not
19 /// marked with `noexcept` or marked with `noexcept(expr)` where `expr`
20 /// evaluates to `false` (but is not a `false` literal itself).
21 ///
22 /// Move constructors of all the types used with STL containers, for example,
23 /// need to be declared `noexcept`. Otherwise STL will choose copy constructors
24 /// instead. The same is valid for move assignment operations.
25 class NoexceptMoveConstructorCheck : public ClangTidyCheck {
26 public:
NoexceptMoveConstructorCheck(StringRef Name,ClangTidyContext * Context)27   NoexceptMoveConstructorCheck(StringRef Name, ClangTidyContext *Context)
28       : ClangTidyCheck(Name, Context) {}
isLanguageVersionSupported(const LangOptions & LangOpts)29   bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
30     return LangOpts.CPlusPlus11;
31   }
32   void registerMatchers(ast_matchers::MatchFinder *Finder) override;
33   void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
34 };
35 
36 } // namespace performance
37 } // namespace tidy
38 } // namespace clang
39 
40 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_NOEXCEPTMOVECONSTRUCTORCHECK_H
41