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/*
* nsfObjectData.c --
*
* NSF object data assumes NSF_OBJECTDATA to be compiled in. When
* specified, it can be used to equip every object with an
* additional payload from C.
*
* Copyright (C) 1999-2015 Gustaf Neumann (a, b)
* Copyright (C) 1999-2007 Uwe Zdun (a, b)
* Copyright (C) 2011 Stefan Sobernig (b)
*
* (a) University of Essen
* Specification of Software Systems
* Altendorferstrasse 97-101
* D-45143 Essen, Germany
*
* (b) Vienna University of Economics and Business
* Institute of Information Systems and New Media
* A-1020, Welthandelsplatz 1
* Vienna, Austria
*
* This work is licensed under the MIT License http://www.opensource.org/licenses/MIT
*
* Copyright:
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/
#include "nsfInt.h"
#ifdef NSF_OBJECTDATA
EXTERN void
NsfFreeObjectData(NsfClass* cl) {
if (cl->opt && cl->opt->objectdata) {
Tcl_DeleteHashTable(cl->opt->objectdata);
ckfree((char*)cl->opt->objectdata);
cl->opt->objectdata = 0;
}
}
EXTERN void
NsfSetObjectData(NsfObject* obj, NsfClass* cl, ClientData data) {
Tcl_HashEntry *hPtr;
int nw;
NsfRequireClassOpt(cl);
if (cl->opt->objectdata == 0) {
cl->opt->objectdata = (Tcl_HashTable*)ckalloc(sizeof(Tcl_HashTable));
Tcl_InitHashTable(cl->opt->objectdata, TCL_ONE_WORD_KEYS);
}
hPtr = Tcl_CreateHashEntry(cl->opt->objectdata, (char*)obj, &nw);
Tcl_SetHashValue(hPtr, data);
}
EXTERN int
NsfGetObjectData(NsfObject* obj, NsfClass* cl, ClientData* data) {
Tcl_HashEntry *hPtr;
if (!cl->opt || !cl->opt->objectdata) {
return 0;
}
hPtr = Tcl_FindHashEntry(cl->opt->objectdata, (char*)obj);
if (data != NULL) {
*data = (hPtr != NULL) ? Tcl_GetHashValue(hPtr) : 0;
}
return hPtr != NULL;
}
EXTERN int
NsfUnsetObjectData(NsfObject* obj, NsfClass* cl) {
Tcl_HashEntry *hPtr;
if (!cl->opt || !cl->opt->objectdata) {
return 0;
}
hPtr = Tcl_FindHashEntry(cl->opt->objectdata, (char*)obj);
if (hPtr != NULL) {
Tcl_DeleteHashEntry(hPtr);
}
return hPtr != NULL;
}
#endif
/*
* Local Variables:
* mode: c
* c-basic-offset: 2
* fill-column: 78
* indent-tabs-mode: nil
* End:
*/
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