/* * 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 exceptionWithClass: [self class]]; 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 exceptionWithClass: [self class]]; 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 exceptionWithClass: [self class]]; range_.location += range.location; return [array objectsInRange: range_]; } @end