/*
* Copyright (c) 2008-2024 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"
#import "OFSubarray.h"
#import "OFOutOfRangeException.h"
@implementation OFSubarray
- (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