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/* Definition of the generic obj class module.
*
* This module relies heavily on preprocessor macros in order to
* provide fast execution time AND ease of use.
*
* Each object that uses this base class MUST provide a constructor with
* the following interface:
*
* Destruct(pThis);
*
* A constructor is not necessary (except for some features, e.g. de-serialization).
* If it is provided, it is a three-part constructor (to handle all cases with a
* generic interface):
*
* Construct(&pThis);
* SetProperty(pThis, property_t *);
* ConstructFinalize(pThis);
*
* SetProperty() and ConstructFinalize() may also be called on an object
* instance which has been Construct()'ed outside of this module.
*
* pThis always references to a pointer of the object.
*
* Copyright 2008 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of rsyslog.
*
* Rsyslog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rsyslog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Rsyslog. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#ifndef OBJ_H_INCLUDED
#define OBJ_H_INCLUDED
#include "obj-types.h"
#include "stream.h"
/* macros */
/* the following one is a helper that prevents us from writing the
* ever-same code at the end of Construct()
*/
#define OBJCONSTRUCT_CHECK_SUCCESS_AND_CLEANUP \
if(iRet == RS_RET_OK) { \
*ppThis = pThis; \
} else { \
if(pThis != NULL) \
free(pThis); \
}
#define objSerializeSCALAR_VAR(strm, propName, propType, var) \
CHKiRet(objSerializeProp(strm, (uchar*) #propName, PROPTYPE_##propType, (void*) &var));
#define objSerializeSCALAR(strm, propName, propType) \
CHKiRet(objSerializeProp(strm, (uchar*) #propName, PROPTYPE_##propType, (void*) &pThis->propName));
#define objSerializePTR(strm, propName, propType) \
CHKiRet(objSerializeProp(strm, (uchar*) #propName, PROPTYPE_##propType, (void*) pThis->propName));
#define DEFobjStaticHelpers static objInfo_t *pObjInfoOBJ = NULL;
#define objGetName(pThis) (((obj_t*) (pThis))->pObjInfo->pszName)
#define objGetObjID(pThis) (((obj_t*) (pThis))->pObjInfo->objID)
#define objGetVersion(pThis) (((obj_t*) (pThis))->pObjInfo->iObjVers)
/* must be called in Constructor: */
#define objConstructSetObjInfo(pThis) ((obj_t*) (pThis))->pObjInfo = pObjInfoOBJ;
#define objDestruct(pThis) (((obj_t*) (pThis))->pObjInfo->objMethods[objMethod_DESTRUCT])(pThis)
#define objSerialize(pThis) (((obj_t*) (pThis))->pObjInfo->objMethods[objMethod_SERIALIZE])
#define OBJSetMethodHandler(methodID, pHdlr) \
CHKiRet(objInfoSetMethod(pObjInfoOBJ, methodID, (rsRetVal (*)(void*)) pHdlr))
/* prototypes */
rsRetVal objInfoConstruct(objInfo_t **ppThis, objID_t objID, uchar *pszName, int iObjVers, rsRetVal (*pConstruct)(void *), rsRetVal (*pDestruct)(void *));
rsRetVal objInfoSetMethod(objInfo_t *pThis, objMethod_t objMethod, rsRetVal (*pHandler)(void*));
rsRetVal objBeginSerialize(strm_t *pStrm, obj_t *pObj);
rsRetVal objSerializeProp(strm_t *pStrm, uchar *pszPropName, propertyType_t propType, void *pUsr);
rsRetVal objEndSerialize(strm_t *pStrm);
rsRetVal objRegisterObj(objID_t oID, objInfo_t *pInfo);
rsRetVal objDeserialize(void *ppObj, objID_t objTypeExpected, strm_t *pSerStore);
PROTOTYPEObjClassInit(obj);
#endif /* #ifndef OBJ_H_INCLUDED */
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