/* * Copyright (c) 2008-2023 Jonathan Schleifer * * 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 "OFSubarray.h" #import "OFOutOfRangeException.h" @implementation OFSubarray + (instancetype)arrayWithArray: (OFArray *)array range: (OFRange)range { return [[[self alloc] initWithArray: array range: range] autorelease]; } - (instancetype)initWithArray: (OFArray *)array range: (OFRange)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)idx { if (idx >= _range.length) @throw [OFOutOfRangeException exception]; return [_array objectAtIndex: idx + _range.location]; } - (void)getObjects: (id *)buffer inRange: (OFRange)range { if (range.length > SIZE_MAX - range.location || range.location + range.length > _range.length) @throw [OFOutOfRangeException exception]; range.location += _range.location; [_array getObjects: buffer inRange: range]; } - (size_t)indexOfObject: (id)object { size_t idx = [_array indexOfObject: object]; if (idx < _range.location) return OFNotFound; idx -= _range.location; if (idx >= _range.length) return OFNotFound; return idx; } - (size_t)indexOfObjectIdenticalTo: (id)object { size_t idx = [_array indexOfObjectIdenticalTo: object]; if (idx < _range.location) return OFNotFound; idx -= _range.location; if (idx >= _range.length) return OFNotFound; return idx; } - (OFArray *)objectsInRange: (OFRange)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