ObjFW  Artifact [7209419737]

Artifact 720941973703a0b01a71f2078bf09c2d7642c2247eff8fc6c216de2879dd4404:

• File src/exceptions/OFSeekFailedException.h — part of check-in [3d16a30f41] at 2013-06-22 12:12:36 on branch trunk — Rework exceptions.

  This mostly removes the argument for the class in which the exception
  occurred. As backtraces were recently added for all platforms, the
  passed class does not give any extra information on where the exception
  occurred anymore.

  This also removes a few other arguments which were not too helpful. In
  the past, the idea was to pass as many arguments as possible so that it
  is easier to find the origin of the exception. However, as backtraces
  are a much better way to find the origin, those are not useful anymore
  and just make the exception more cumbersome to use. The rule is now to
  only pass arguments that might help in recovering from the exception or
  provide information that is otherwise not easily accessible. (user: js, size: 2317) [annotate] [blame] [check-ins using]

/*
 * 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 <sys/types.h>

#import "OFException.h"

@class OFSeekableStream;

/*!
 * @brief An exception indicating that seeking in a stream failed.
 */
@interface OFSeekFailedException: OFException
{
	OFSeekableStream *_stream;
	off_t _offset;
	int _whence, _errNo;
}

#ifdef OF_HAVE_PROPERTIES
@property (readonly, retain, nonatomic) OFSeekableStream *stream;
@property (readonly) off_t offset;
@property (readonly) int whence, errNo;
#endif

/*!
 * @brief Creates a new, autoreleased seek failed exception.
 *
 * @param stream The stream for which seeking failed
 * @param offset The offset to which seeking failed
 * @param whence To what the offset is relative
 * @return A new, autoreleased seek failed exception
 */
+ (instancetype)exceptionWithStream: (OFSeekableStream*)stream
			     offset: (off_t)offset
			     whence: (int)whence;

/*!
 * @brief Initializes an already allocated seek failed exception.
 *
 * @param stream The stream for which seeking failed
 * @param offset The offset to which seeking failed
 * @param whence To what the offset is relative
 * @return An initialized seek failed exception
 */
- initWithStream: (OFSeekableStream*)stream
	  offset: (off_t)offset
	  whence: (int)whence;

/*!
 * @brief Returns the stream for which seeking failed.
 *
 * @return The stream for which seeking failed
 */
- (OFSeekableStream*)stream;

/*!
 * @brief Returns the offset to which seeking failed.
 *
 * @return The offset to which seeking failed
 */
- (off_t)offset;

/*!
 * @brief Returns to what the offset is relative.
 *
 * @return To what the offset is relative
 */
- (int)whence;

/*!
 * @brief Returns the errno from when the exception was created.
 *
 * @return The errno from when the exception was created
 */
- (int)errNo;
@end