NoexceptMoveConstructorCheck.h

Go to the documentation of this file.

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_NOEXCEPTMOVECONSTRUCTORCHECK_H
#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_NOEXCEPTMOVECONSTRUCTORCHECK_H
 
#include "../ClangTidyCheck.h"
#include "NoexceptFunctionBaseCheck.h"
 
namespace clang::tidy::performance {
 
/// The check flags user-defined move constructors and assignment operators not
/// marked with `noexcept` or marked with `noexcept(expr)` where `expr`
/// evaluates to `false` (but is not a `false` literal itself).
///
/// Move constructors of all the types used with STL containers, for example,
/// need to be declared `noexcept`. Otherwise STL will choose copy constructors
/// instead. The same is valid for move assignment operations.
///
/// For the user-facing documentation see:
/// https://clang.llvm.org/extra/clang-tidy/checks/performance/noexcept-move-constructor.html
class NoexceptMoveConstructorCheck : public NoexceptFunctionBaseCheck {
public:
  using NoexceptFunctionBaseCheck::NoexceptFunctionBaseCheck;
 
  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
 
private:
  DiagnosticBuilder reportMissingNoexcept(const FunctionDecl *FuncDecl) final;
  void reportNoexceptEvaluatedToFalse(const FunctionDecl *FuncDecl,
                                      const Expr *NoexceptExpr) final;
};
 
} // namespace clang::tidy::performance
 
#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_NOEXCEPTMOVECONSTRUCTORCHECK_H