ObjFW  Artifact [52581f6912]

Artifact 52581f6912d535db76fdd6867eae37ac4db693c8cfa5519fbc136d096d41ffea:

• File src/exceptions/OFSeekFailedException.m — part of check-in [e1e7ffa903] at 2011-09-22 23:25:42 on branch trunk — Exceptions are now autoreleased.

  This is safe as an "exception loop" can't happen, since if allocating
  an exception fails, it throws an OFAllocFailedException which is
  preallocated and can always be thrown.

  So, the worst case would be that an autorelease of an exception fails,
  triggering an OFOutOfMemoryException for which there is no memory,
  resulting in an OFAllocFailedException to be thrown. (user: js, size: 1866) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011
 *   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 "OFSeekFailedException.h"
#import "OFString.h"
#import "OFSeekableStream.h"

#import "OFNotImplementedException.h"

#import "common.h"

@implementation OFSeekFailedException
+ exceptionWithClass: (Class)class_
	      stream: (OFSeekableStream*)stream
	      offset: (off_t)offset
	      whence: (int)whence
{
	return [[[self alloc] initWithClass: class_
				     stream: stream
				     offset: offset
				     whence: whence] autorelease];
}

- initWithClass: (Class)class_
{
	Class c = isa;
	[self release];
	@throw [OFNotImplementedException exceptionWithClass: c
						    selector: _cmd];
}

- initWithClass: (Class)class_
	 stream: (OFSeekableStream*)stream_
	 offset: (off_t)offset_
	 whence: (int)whence_
{
	self = [super initWithClass: class_];

	stream = [stream_ retain];
	offset = offset_;
	whence = whence_;
	errNo = GET_ERRNO;

	return self;
}

- (void)dealloc
{
	[stream	release];

	[super dealloc];
}

- (OFString*)description
{
	if (description != nil)
		return description;

	description = [[OFString alloc] initWithFormat:
	    @"Seeking failed in class %@! " ERRFMT, inClass, ERRPARAM];

	return description;
}

- (OFSeekableStream*)stream
{
	return stream;
}

- (off_t)offset
{
	return offset;
}

- (int)whence
{
	return whence;
}

- (int)errNo
{
	return errNo;
}
@end