src/squirrel/squirrel/squserdata.h

   1 /*      see copyright notice in squirrel.h */
   2 #ifndef _SQUSERDATA_H_
   3 #define _SQUSERDATA_H_
   4
   5 struct SQUserData : SQDelegable
   6 {
   7         SQUserData(SQSharedState *ss){ _uiRef = 0; _delegate = 0; _hook = NULL; INIT_CHAIN(); ADD_TO_CHAIN(&_ss(this)->_gc_chain, this); }
   8         ~SQUserData()
   9         {
  10                 REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain, this);
  11                 SetDelegate(NULL);
  12         }
  13         static SQUserData* Create(SQSharedState *ss, int size)
  14         {
  15                 SQUserData* ud = (SQUserData*)SQ_MALLOC(sizeof(SQUserData)+(size-1));
  16                 new (ud) SQUserData(ss);
  17                 ud->_size = size;
  18                 ud->_typetag = 0;
  19                 return ud;
  20         }
  21 #ifndef NO_GARBAGE_COLLECTOR
  22         void Mark(SQCollectable **chain);
  23         void Finalize(){SetDelegate(NULL);}
  24 #endif
  25         void Release() {
  26                 if (_hook) _hook(_val,_size);
  27                 int tsize = _size - 1;
  28                 this->~SQUserData();
  29                 SQ_FREE(this, sizeof(SQUserData) + tsize);
  30         }
  31         void SetDelegate(SQTable *mt)
  32         {
  33                 if (mt) __ObjAddRef(mt);
  34                 __ObjRelease(_delegate);
  35                 _delegate = mt;
  36         }
  37
  38
  39         int _size;
  40         SQRELEASEHOOK _hook;
  41         unsigned int _typetag;
  42         SQChar _val[1];
  43 };
  44
  45 #endif //_SQUSERDATA_H_