/*
 * Copyright (c) 2008-2022 Jonathan Schleifer <js@nil.im>
 *
 * 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.
 */

#import "OFException.h"
#import "OFSeekableStream.h"

OF_ASSUME_NONNULL_BEGIN

/**
 * @class OFSeekFailedException \
 *	  OFSeekFailedException.h ObjFW/OFSeekFailedException.h
 *
 * @brief An exception indicating that seeking in a stream failed.
 */
@interface OFSeekFailedException: OFException
{
	OFSeekableStream *_stream;
	OFStreamOffset _offset;
	OFSeekWhence _whence;
	int _errNo;
}

/**
 * @brief The stream for which seeking failed.
 */
@property (readonly, nonatomic) OFSeekableStream *stream;

/**
 * @brief The offset to which seeking failed.
 */
@property (readonly, nonatomic) OFStreamOffset offset;

/**
 * @brief To what the offset is relative.
 */
@property (readonly, nonatomic) OFSeekWhence whence;

/**
 * @brief The errno of the error that occurred.
 */
@property (readonly, nonatomic) int errNo;

/**
 * @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
 * @param errNo The errno of the error that occurred
 * @return A new, autoreleased seek failed exception
 */
+ (instancetype)exceptionWithStream: (OFSeekableStream *)stream
			     offset: (OFStreamOffset)offset
			     whence: (OFSeekWhence)whence
			      errNo: (int)errNo;

+ (instancetype)exception OF_UNAVAILABLE;

/**
 * @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
 * @param errNo The errno of the error that occurred
 * @return An initialized seek failed exception
 */
- (instancetype)initWithStream: (OFSeekableStream *)stream
			offset: (OFStreamOffset)offset
			whence: (OFSeekWhence)whence
			 errNo: (int)errNo OF_DESIGNATED_INITIALIZER;

- (instancetype)init OF_UNAVAILABLE;
@end

OF_ASSUME_NONNULL_END