// the assumption here is that the data was either built by Deserialize()
// or was created by application code in a way that observes our rule: each
// struct and string was separately allocated with malloc()
void FreeStruct(uint8_t *structStart, const StructMetadata *def)
{
if (!structStart)
return;
Type type;
const FieldMetadata *fieldDef = NULL;
for (int i = 0; i < def->nFields; i++) {
fieldDef = def->fields + i;
uint8_t *data = structStart + fieldDef->offset;
type = (Type)(fieldDef->type & TYPE_MASK);
if (TYPE_STRUCT_PTR == type) {
uint8_t **p = (uint8_t**)data;
FreeStruct(*p, GetStructDef(fieldDef));
} else if (TYPE_ARRAY == type) {
Vec<uint8_t*> **vecPtr = (Vec<uint8_t*> **)data;
Vec<uint8_t*> *vec = *vecPtr;
for (size_t j = 0; j < vec->Count(); j++) {
FreeStruct(vec->At(j), GetStructDef(fieldDef));
}
delete vec;
} else if ((TYPE_STR == type) || (TYPE_WSTR == type)) {
char **sp = (char**)data;
char *s = *sp;
free(s);
}
}
free(structStart);
}
static uint8_t *DecodeStruct(DecodeState& ds, const FieldMetadata *fieldDef, TxtNode *node, bool isCompact)
{
uint8_t *d = NULL;
if (isCompact && (TextNode == node->type)) {
d = DeserializeCompact(ds, node, GetStructDef(fieldDef));
} else {
if (StructNode == node->type)
d = DeserializeRec(ds, node, GetStructDef(fieldDef));
}
return d;
}
DBExtend *SystemDict :: ProvideExtendDef (SDB_Reference sdbref, logical disjopt, logical unionopt, logical intersopt, logical contr_opt )
{
DBStructDef *strdefptr;
DBExtend *oldext;
DBExtend *dbextdef;
BEGINSEQ
TypeKey tkey(sdbref.get_ddetype(),SYS_NSID);
if ( !(strdefptr = GetStructDef(tkey)) ) SDBERR(20)
if ( !(dbextdef = new DBExtend(this,&sdbref,strdefptr,disjopt,unionopt,intersopt,contr_opt)) )
SDBERR(95)
if ( oldext = GetExtendDef(dbextdef->fmcbname,SYS_NSID) )
{
extdef_list.Remove(oldext);
dbextdef->SetPrevious(oldext);
}
extdef_list.Insert(dbextdef);
RECOVER
dbextdef = NULL;
ENDSEQ
return(dbextdef);
}