serialis.h

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/**********************************************************************
 * File:        serialis.h  (Formerly serialmac.h)
 * Description: Inline routines and macros for serialisation functions
 * Author:      Phil Cheatle
 * Created:     Tue Oct 08 08:33:12 BST 1991
 *
 * (C) Copyright 1990, Hewlett-Packard Ltd.
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
 ** You may obtain a copy of the License at
 ** http://www.apache.org/licenses/LICENSE-2.0
 ** Unless required by applicable law or agreed to in writing, software
 ** distributed under the License is distributed on an "AS IS" BASIS,
 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ** See the License for the specific language governing permissions and
 ** limitations under the License.
 *
 **********************************************************************/

#ifndef SERIALIS_H
#define SERIALIS_H

#include          <stdlib.h>
#include          <string.h>
#include          <stdio.h>
#include "memry.h"
#include "errcode.h"
#include "fileerr.h"

/* **************************************************************************

These are the only routines that write/read data to/from the serialisation.

"serialise_bytes" and "de_serialise_bytes" are used to serialise NON class
items.  The "make_serialise" macro generates "serialise" and "de_serialise"
member functions for the class name specified in the macro parameter.

************************************************************************** */

extern DLLSYM void *de_serialise_bytes(FILE *f, int size); 
extern DLLSYM void serialise_bytes(FILE *f, void *ptr, int size); 
extern DLLSYM void serialise_INT32(FILE *f, INT32 the_int); 
extern DLLSYM INT32 de_serialise_INT32(FILE *f); 
extern DLLSYM void serialise_FLOAT64(FILE *f, double the_float); 
extern DLLSYM double de_serialise_FLOAT64(FILE *f); 
extern DLLSYM UINT32 reverse32(            //switch endian
                               UINT32 num  //number to fix
                              );
extern DLLSYM UINT16 reverse16(            //switch endian
                               UINT16 num  //number to fix
                              );

/***********************************************************************
  QUOTE_IT   MACRO DEFINITION
  ===========================
Replace <parm> with "<parm>".  <parm> may be an arbitrary number of tokens
***********************************************************************/

#define QUOTE_IT( parm ) #parm

#define make_serialise( CLASSNAME )													\
																									\
	NEWDELETE2(CLASSNAME)                                                 \
																									\
void						serialise(														\
	FILE*					f)																	\
{																								\
	CLASSNAME*			shallow_copy;													\
																									\
	shallow_copy = (CLASSNAME*) alloc_struct( sizeof( *this ) );				\
		memmove( shallow_copy, this, sizeof( *this ) );								\
																									\
	shallow_copy->prep_serialise();													\
		if (fwrite( (char*) shallow_copy, sizeof( *shallow_copy ), 1, f ) != 1)\
		WRITEFAILED.error( QUOTE_IT( CLASSNAME::serialise ),              \
									ABORT, NULL );											\
																									\
	free_struct( shallow_copy, sizeof( *this ) );								\
		this->dump( f );																			\
}																								\
																									\
	static CLASSNAME*		de_serialise(										\
	FILE*					f)																	\
{																								\
	CLASSNAME*			restored;											\
																									\
		restored = (CLASSNAME*) alloc_struct( sizeof( CLASSNAME ) );				\
		if (fread( (char*) restored, sizeof( CLASSNAME ), 1, f ) != 1)				\
		READFAILED.error( QUOTE_IT( CLASSNAME::de_serialise ),            \
									ABORT, NULL );												\
																									\
	restored->de_dump( f );																	\
		return restored;																			\
}
#endif