ObjFW  Artifact [83e4ee3b65]

Artifact 83e4ee3b65d7a34e054925db2c594501bf048f535c98036cd653bccef7b96fa9:

• File src/OFArray_subarray.m — part of check-in [3d16a30f41] at 2013-06-22 12:12:36 on branch trunk — Rework exceptions.

  This mostly removes the argument for the class in which the exception
  occurred. As backtraces were recently added for all platforms, the
  passed class does not give any extra information on where the exception
  occurred anymore.

  This also removes a few other arguments which were not too helpful. In
  the past, the idea was to pass as many arguments as possible so that it
  is easier to find the origin of the exception. However, as backtraces
  are a much better way to find the origin, those are not useful anymore
  and just make the exception more cumbersome to use. The rule is now to
  only pass arguments that might help in recovering from the exception or
  provide information that is otherwise not easily accessible. (user: js, size: 2473) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#import "OFArray_subarray.h"

#import "OFOutOfRangeException.h"

@implementation OFArray_subarray
+ (instancetype)arrayWithArray: (OFArray*)array
			 range: (of_range_t)range
{
	return [[[self alloc] initWithArray: array
				      range: range] autorelease];
}

- initWithArray: (OFArray*)array
	  range: (of_range_t)range
{
	self = [super init];

	@try {
		/* Should usually be retain, as it's useless with a copy */
		_array = [array copy];
		_range = range;
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	[_array release];

	[super dealloc];
}

- (size_t)count
{
	return _range.length;
}

- (id)objectAtIndex: (size_t)index
{
	if (index >= _range.length)
		@throw [OFOutOfRangeException exception];

	return [_array objectAtIndex: index + _range.location];
}

- (void)getObjects: (id*)buffer
	   inRange: (of_range_t)range
{
	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > _range.length)
		@throw [OFOutOfRangeException exception];

	range.location += _range.location;

	return [_array getObjects: buffer
			  inRange: range];
}

- (size_t)indexOfObject: (id)object
{
	size_t index = [_array indexOfObject: object];

	if (index < _range.location)
		return OF_NOT_FOUND;

	index -= _range.location;

	if (index >= _range.length)
		return OF_NOT_FOUND;

	return index;
}

- (size_t)indexOfObjectIdenticalTo: (id)object
{
	size_t index = [_array indexOfObjectIdenticalTo: object];

	if (index < _range.location)
		return OF_NOT_FOUND;

	index -= _range.location;

	if (index >= _range.length)
		return OF_NOT_FOUND;

	return index;
}

- (OFArray*)objectsInRange: (of_range_t)range
{
	if (range.length > SIZE_MAX - range.location ||
	    range.location + range.length > _range.length)
		@throw [OFOutOfRangeException exception];

	range.location += _range.location;

	return [_array objectsInRange: range];
}
@end