/*
 * Copyright (c) 2009 Lukas Mejdrech
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup net
 *  @{
 */

/** @file
 *  Common error processing codes and routines.
 */

#ifndef __NET_ERR_H__
#define __NET_ERR_H__

#include <errno.h>

#ifdef CONFIG_DEBUG

#include <stdio.h>

#endif

/** An actual stored error code.
 */
#define ERROR_CODE					error_check_return_value

/** An error processing routines declaration.
 *  This has to be declared in the block where the error processing is desired.
 */
#define ERROR_DECLARE				int ERROR_CODE

/** Stores the value as an error code and checks if an error occurred.
 *  @param[in] value The value to be checked. May be a function call.
 *  @returns FALSE if the value indicates success (EOK).
 *  @returns TRUE otherwise.
 */
#ifdef CONFIG_DEBUG

#define ERROR_OCCURRED( value )		((( ERROR_CODE = ( value )) != EOK ) && ({ printf( "error at %s:%d %d\n", __FILE__, __LINE__, ERROR_CODE ); 1; }))

#else

#define ERROR_OCCURRED( value )		(( ERROR_CODE = ( value )) != EOK )

#endif

/** Checks if an error occurred and immediately exits the actual function returning the error code.
 *  @param[in] value The value to be checked. May be a function call.
 */

#define ERROR_PROPAGATE( value )	if( ERROR_OCCURRED( value )) return ERROR_CODE

#endif

/** @}
 */