scip_reader.h

Go to the documentation of this file.

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*                                                                           */
/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
/*                                                                           */
/*    Copyright (C) 2002-2019 Konrad-Zuse-Zentrum                            */
/*                            fuer Informationstechnik Berlin                */
/*                                                                           */
/*  SCIP is distributed under the terms of the ZIB Academic License.         */
/*                                                                           */
/*  You should have received a copy of the ZIB Academic License              */
/*  along with SCIP; see the file COPYING. If not visit scip.zib.de.         */
/*                                                                           */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**@file   scip_reader.h
 * @ingroup PUBLICCOREAPI
 * @brief  public methods for reader plugins
 * @author Tobias Achterberg
 * @author Timo Berthold
 * @author Thorsten Koch
 * @author Alexander Martin
 * @author Marc Pfetsch
 * @author Kati Wolter
 * @author Gregor Hendel
 * @author Robert Lion Gottwald
 */

/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/

#ifndef __SCIP_SCIP_READER_H__
#define __SCIP_SCIP_READER_H__


#include "scip/def.h"
#include "scip/type_cons.h"
#include "scip/type_prob.h"
#include "scip/type_reader.h"
#include "scip/type_result.h"
#include "scip/type_retcode.h"
#include "scip/type_scip.h"
#include "scip/type_var.h"

/* In debug mode, we include the SCIP's structure in scip.c, such that no one can access
 * this structure except the interface methods in scip.c.
 * In optimized mode, the structure is included in scip.h, because some of the methods
 * are implemented as defines for performance reasons (e.g. the numerical comparisons).
 * Additionally, the internal "set.h" is included, such that the defines in set.h are
 * available in optimized mode.
 */
#ifdef NDEBUG
#include "scip/struct_scip.h"
#include "scip/struct_stat.h"
#include "scip/set.h"
#include "scip/tree.h"
#include "scip/misc.h"
#include "scip/var.h"
#include "scip/cons.h"
#include "scip/solve.h"
#include "scip/debug.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif

/**@addtogroup PublicReaderMethods
 *
 * @{
 */

/** creates a reader and includes it in SCIP
 *
 *  @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
 *          SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
 *
 *  @pre This method can be called if SCIP is in one of the following stages:
 *       - \ref SCIP_STAGE_INIT
 *       - \ref SCIP_STAGE_PROBLEM
 *
 *  @note method has all reader callbacks as arguments and is thus changed every time a new callback is added
 *        in future releases; consider using SCIPincludeReaderBasic() and setter functions
 *        if you seek for a method which is less likely to change in future releases
 */
extern
SCIP_RETCODE SCIPincludeReader(
   SCIP*                 scip,               /**< SCIP data structure */
   const char*           name,               /**< name of reader */
   const char*           desc,               /**< description of reader */
   const char*           extension,          /**< file extension that reader processes */
   SCIP_DECL_READERCOPY  ((*readercopy)),    /**< copy method of reader or NULL if you don't want to copy your plugin into sub-SCIPs */
   SCIP_DECL_READERFREE  ((*readerfree)),    /**< destructor of reader */
   SCIP_DECL_READERREAD  ((*readerread)),    /**< read method */
   SCIP_DECL_READERWRITE ((*readerwrite)),   /**< write method */
   SCIP_READERDATA*      readerdata          /**< reader data */
   );

/** creates a reader and includes it in SCIP. All non-fundamental (or optional) callbacks will be set to NULL.
 *  Optional callbacks can be set via specific setter functions, see
 *  SCIPsetReaderCopy(), SCIPsetReaderFree(), SCIPsetReaderRead(), SCIPsetReaderWrite().
 *
 *  @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
 *          SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
 *
 *  @pre This method can be called if SCIP is in one of the following stages:
 *       - \ref SCIP_STAGE_INIT
 *       - \ref SCIP_STAGE_PROBLEM
 *
 *  @note if you want to set all callbacks with a single method call, consider using SCIPincludeReader() instead
 */
extern
SCIP_RETCODE SCIPincludeReaderBasic(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_READER**         readerptr,          /**< reference to reader pointer, or NULL */
   const char*           name,               /**< name of reader */
   const char*           desc,               /**< description of reader */
   const char*           extension,          /**< file extension that reader processes */
   SCIP_READERDATA*      readerdata          /**< reader data */
   );

/** set copy method of reader
 *
 *  @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
 *          SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
 *
 *  @pre This method can be called if SCIP is in one of the following stages:
 *       - \ref SCIP_STAGE_INIT
 *       - \ref SCIP_STAGE_PROBLEM
 */
extern
SCIP_RETCODE SCIPsetReaderCopy(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_READER*          reader,             /**< reader */
   SCIP_DECL_READERCOPY  ((*readercopy))     /**< copy method of reader or NULL if you don't want to copy your plugin into sub-SCIPs */
   );

/** set deinitialization method of reader
 *
 *  @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
 *          SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
 *
 *  @pre This method can be called if SCIP is in one of the following stages:
 *       - \ref SCIP_STAGE_INIT
 *       - \ref SCIP_STAGE_PROBLEM
 */
extern
SCIP_RETCODE SCIPsetReaderFree(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_READER*          reader,             /**< reader */
   SCIP_DECL_READERFREE  ((*readerfree))     /**< destructor of reader */
   );

/** set read method of reader
 *
 *  @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
 *          SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
 *
 *  @pre This method can be called if SCIP is in one of the following stages:
 *       - \ref SCIP_STAGE_INIT
 *       - \ref SCIP_STAGE_PROBLEM
 */
extern
SCIP_RETCODE SCIPsetReaderRead(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_READER*          reader,             /**< reader */
   SCIP_DECL_READERREAD  ((*readerread))     /**< read method of reader */
   );

/** set write method of reader
 *
 *  @return \ref SCIP_OKAY is returned if everything worked. Otherwise a suitable error code is passed. See \ref
 *          SCIP_Retcode "SCIP_RETCODE" for a complete list of error codes.
 *
 *  @pre This method can be called if SCIP is in one of the following stages:
 *       - \ref SCIP_STAGE_INIT
 *       - \ref SCIP_STAGE_PROBLEM
 */
extern
SCIP_RETCODE SCIPsetReaderWrite(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_READER*          reader,             /**< reader */
   SCIP_DECL_READERWRITE ((*readerwrite))    /**< write method of reader */
   );

/** returns the reader of the given name, or NULL if not existing */
extern
SCIP_READER* SCIPfindReader(
   SCIP*                 scip,               /**< SCIP data structure */
   const char*           name                /**< name of reader */
   );

/** returns the array of currently available readers */
extern
SCIP_READER** SCIPgetReaders(
   SCIP*                 scip                /**< SCIP data structure */
   );

/** returns the number of currently available readers */
extern
int SCIPgetNReaders(
   SCIP*                 scip                /**< SCIP data structure */
   );

/* @} */

#ifdef __cplusplus
}
#endif

#endif