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	1	/* Cydia - iPhone UIKit Front-End for Debian APT
	2	* Copyright (C) 2008-2011 Jay Freeman (saurik)
	3	*/
	4
	5	/* Modified BSD License {{{ */
	6	/*
	7	* Redistribution and use in source and binary
	8	* forms, with or without modification, are permitted
	9	* provided that the following conditions are met:
	10	*
	11	* 1. Redistributions of source code must retain the
	12	* above copyright notice, this list of conditions
	13	* and the following disclaimer.
	14	* 2. Redistributions in binary form must reproduce the
	15	* above copyright notice, this list of conditions
	16	* and the following disclaimer in the documentation
	17	* and/or other materials provided with the
	18	* distribution.
	19	* 3. The name of the author may not be used to endorse
	20	* or promote products derived from this software
	21	* without specific prior written permission.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
	24	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
	25	* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
	26	* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
	28	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	29	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	30	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	31	* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	32	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	33	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
	34	* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
	35	* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	36	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	37	*/
	38	/* }}} */
	39
	40	#ifndef Menes_ObjectHandle_H
	41	#define Menes_ObjectHandle_H
	42
	43	#include "CyteKit/UCPlatform.h"
	44
	45	#include <CoreFoundation/CoreFoundation.h>
	46	#include <Foundation/Foundation.h>
	47
	48	template <typename Type_, unsigned Delegate_>
	49	struct MenesObjectHandle_;
	50
	51	template <typename Type_>
	52	struct MenesObjectHandle_<Type_, 0> {
	53	static _finline void Execute(Type_ *value) {
	54	}
	55	};
	56
	57	template <typename Type_>
	58	struct MenesObjectHandle_<Type_, 1> {
	59	static _finline void Execute(Type_ *value) {
	60	[value setDelegate:nil];
	61	}
	62	};
	63
	64	template <typename Type_>
	65	struct MenesObjectHandle_<Type_, 2> {
	66	static _finline void Execute(Type_ *value) {
	67	[value setDelegate:nil];
	68	[value setDataSource:nil];
	69	}
	70	};
	71
	72	template <typename Type_, unsigned Delegate_ = 0>
	73	class MenesObjectHandle {
	74	private:
	75	Type_ *value_;
	76
	77	_finline void Retain_() {
	78	if (value_ != nil)
	79	CFRetain((CFTypeRef) value_);
	80	}
	81
	82	_finline void Release_(Type_ *value) {
	83	if (value != nil) {
	84	MenesObjectHandle_<Type_, Delegate_>::Execute(value);
	85	CFRelease((CFTypeRef) value);
	86	}
	87	}
	88
	89	public:
	90	_finline MenesObjectHandle(const MenesObjectHandle &rhs) :
	91	value_(rhs.value_ == nil ? nil : (Type_ *) CFRetain((CFTypeRef) rhs.value_))
	92	{
	93	}
	94
	95	_finline MenesObjectHandle(Type_ *value = NULL, bool mended = false) :
	96	value_(value)
	97	{
	98	if (!mended)
	99	Retain_();
	100	}
	101
	102	_finline ~MenesObjectHandle() {
	103	Release_(value_);
	104	}
	105
	106	_finline operator Type_ *() const {
	107	return value_;
	108	}
	109
	110	_finline MenesObjectHandle &operator =(Type_ *value) {
	111	if (value_ != value) {
	112	Type_ *old(value_);
	113	value_ = value;
	114	Retain_();
	115	Release_(old);
	116	} return *this;
	117	}
	118
	119	_finline MenesObjectHandle &operator =(const MenesObjectHandle &value) {
	120	return this->operator =(value.operator Type_ *());
	121	}
	122	};
	123
	124	#define _H MenesObjectHandle
	125
	126	#endif//Menes_ObjectHandle_H