mirror of https://github.com/PCSX2/pcsx2.git
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/scopedptr.h
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// Purpose: scoped smart pointer class
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// Author: Jesse Lovelace <jllovela@eos.ncsu.edu>
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// Created: 06/01/02
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// RCS-ID: $Id: scopedptr.h 60411 2009-04-27 13:59:08Z CE $
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// Copyright: (c) Jesse Lovelace and original Boost authors (see below)
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// (c) 2009 Vadim Zeitlin
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#pragma once
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#include "wx/defs.h"
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// This class closely follows the implementation of the boost
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// library scoped_ptr and is an adaption for c++ macro's in
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// the wxWidgets project. The original authors of the boost
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// scoped_ptr are given below with their respective copyrights.
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// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
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// Copyright (c) 2001, 2002 Peter Dimov
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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// See http://www.boost.org/libs/smart_ptr/scoped_ptr.htm for documentation.
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//
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// ----------------------------------------------------------------------------
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// wxScopedPtr: A scoped pointer
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// ----------------------------------------------------------------------------
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template <class T>
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class wxScopedPtr
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{
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public:
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typedef T element_type;
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wxEXPLICIT wxScopedPtr(T * ptr = NULL) : m_ptr(ptr) { }
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~wxScopedPtr() { delete m_ptr; }
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// test for pointer validity: defining conversion to unspecified_bool_type
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// and not more obvious bool to avoid implicit conversions to integer types
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typedef T *(wxScopedPtr<T>::*unspecified_bool_type)() const;
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operator unspecified_bool_type() const
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{
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return m_ptr ? &wxScopedPtr<T>::get : NULL;
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}
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void reset(T * ptr = NULL)
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{
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if ( ptr != m_ptr )
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{
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delete m_ptr;
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m_ptr = ptr;
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}
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}
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T *release()
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{
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T *ptr = m_ptr;
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m_ptr = NULL;
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return ptr;
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}
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T & operator*() const
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{
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wxASSERT(m_ptr != NULL);
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return *m_ptr;
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}
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T * operator->() const
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{
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wxASSERT(m_ptr != NULL);
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return m_ptr;
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}
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T * get() const
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{
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return m_ptr;
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}
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void swap(wxScopedPtr& other)
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{
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T * const tmp = other.m_ptr;
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other.m_ptr = m_ptr;
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m_ptr = tmp;
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}
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private:
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T * m_ptr;
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wxScopedPtr(const wxScopedPtr<T>&);
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wxScopedPtr& operator=(const wxScopedPtr<T>&);
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};
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