gecko-dev/cmd/macfe/gui/opaque_ptr.h

42 строки
1.1 KiB
C
Исходник Обычный вид История

1998-03-28 05:44:41 +03:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#pragma once
template <class T>
class opaque_ptr
{
friend bool operator==( const opaque_ptr<T>&, const opaque_ptr<T>& );
public:
opaque_ptr( const T* ptr = 0 ) : _ptr(ptr) { }
// Note: _not_ |explicit|
private:
const T* _ptr;
};
template <class T>
inline
bool
operator==( const opaque_ptr<T>& L, const opaque_ptr<T>& R )
{
return L._ptr == R._ptr;
}