ObjFW  Diff

#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];

{
	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;

	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