/*
 * Copyright (c) 2008-2026 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 3.0 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * version 3.0 for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3.0 along with this program. If not, see
 * <https://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <limits.h>
#include <string.h>

#import "OFConcreteData.h"

#import "OFInvalidArgumentException.h"
#import "OFOutOfRangeException.h"

@implementation OFConcreteData
- (instancetype)init
{
	return [self initWithItemSize: 1];
}

- (instancetype)initWithItemSize: (size_t)itemSize
{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_itemSize = itemSize;
		_freeWhenDone = true;
	} @catch (id e) {
		objc_release(self);
		@throw e;
	}

	return self;
}

- (instancetype)initWithItems: (const void *)items
			count: (size_t)count
		     itemSize: (size_t)itemSize
{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_items = OFAllocMemory(count, itemSize);
		_capacity = _count = count;
		_itemSize = itemSize;
		_freeWhenDone = true;

		memcpy(_items, items, count * itemSize);
	} @catch (id e) {
		objc_release(self);
		@throw e;
	}

	return self;
}

- (instancetype)initWithItemsNoCopy: (void *)items
			      count: (size_t)count
			   itemSize: (size_t)itemSize
		       freeWhenDone: (bool)freeWhenDone
{
	self = [super init];

	@try {
		if (itemSize == 0)
			@throw [OFInvalidArgumentException exception];

		_items = (unsigned char *)items;
		_capacity = _count = count;
		_itemSize = itemSize;
		_freeWhenDone = freeWhenDone;
	} @catch (id e) {
		objc_release(self);
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	if (_freeWhenDone)
		OFFreeMemory(_items);

	[super dealloc];
}

- (size_t)count
{
	return _count;
}

- (size_t)itemSize
{
	return _itemSize;
}

- (const void *)items
{
	return _items;
}
@end
