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 #include "NoexceptFunctionBaseCheck.h" 14 15 namespace clang::tidy::performance { 16 17 /// The check flags user-defined move constructors and assignment operators not 18 /// marked with `noexcept` or marked with `noexcept(expr)` where `expr` 19 /// evaluates to `false` (but is not a `false` literal itself). 20 /// 21 /// Move constructors of all the types used with STL containers, for example, 22 /// need to be declared `noexcept`. Otherwise STL will choose copy constructors 23 /// instead. The same is valid for move assignment operations. 24 /// 25 /// For the user-facing documentation see: 26 /// https://clang.llvm.org/extra/clang-tidy/checks/performance/noexcept-move-constructor.html 27 class NoexceptMoveConstructorCheck : public NoexceptFunctionBaseCheck { 28 public: 29 using NoexceptFunctionBaseCheck::NoexceptFunctionBaseCheck; 30 31 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 32 33 private: 34 DiagnosticBuilder 35 reportMissingNoexcept(const FunctionDecl *FuncDecl) final override; 36 void reportNoexceptEvaluatedToFalse(const FunctionDecl *FuncDecl, 37 const Expr *NoexceptExpr) final override; 38 }; 39 40 } // namespace clang::tidy::performance 41 42 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_NOEXCEPTMOVECONSTRUCTORCHECK_H 43