src/squirrel/squirrel/sqobject.h

   1 /*      see copyright notice in squirrel.h */\r
   2 #ifndef _SQOBJECT_H_\r
   3 #define _SQOBJECT_H_\r
   4 \r
   5 #include "squtils.h"\r
   6 \r
   7 #define SQ_CLOSURESTREAM_HEAD (('S'<<24)|('Q'<<16)|('I'<<8)|('R'))\r
   8 #define SQ_CLOSURESTREAM_PART (('P'<<24)|('A'<<16)|('R'<<8)|('T'))\r
   9 #define SQ_CLOSURESTREAM_TAIL (('T'<<24)|('A'<<16)|('I'<<8)|('L'))\r
  10 \r
  11 struct SQSharedState;\r
  12 \r
  13 enum SQMetaMethod{\r
  14         MT_ADD=0,\r
  15         MT_SUB=1,\r
  16         MT_MUL=2,\r
  17         MT_DIV=3,\r
  18         MT_UNM=4,\r
  19         MT_MODULO=5,\r
  20         MT_SET=6,\r
  21         MT_GET=7,\r
  22         MT_TYPEOF=8,\r
  23         MT_NEXTI=9,\r
  24         MT_CMP=10,\r
  25         MT_CALL=11,\r
  26         MT_CLONED=12,\r
  27         MT_NEWSLOT=13,\r
  28         MT_DELSLOT=14,\r
  29         MT_TOSTRING=15,\r
  30         MT_NEWMEMBER=16,\r
  31         MT_INHERITED=17,\r
  32         MT_LAST = 18\r
  33 };\r
  34 \r
  35 #define MM_ADD          _SC("_add")\r
  36 #define MM_SUB          _SC("_sub")\r
  37 #define MM_MUL          _SC("_mul")\r
  38 #define MM_DIV          _SC("_div")\r
  39 #define MM_UNM          _SC("_unm")\r
  40 #define MM_MODULO       _SC("_modulo")\r
  41 #define MM_SET          _SC("_set")\r
  42 #define MM_GET          _SC("_get")\r
  43 #define MM_TYPEOF       _SC("_typeof")\r
  44 #define MM_NEXTI        _SC("_nexti")\r
  45 #define MM_CMP          _SC("_cmp")\r
  46 #define MM_CALL         _SC("_call")\r
  47 #define MM_CLONED       _SC("_cloned")\r
  48 #define MM_NEWSLOT      _SC("_newslot")\r
  49 #define MM_DELSLOT      _SC("_delslot")\r
  50 #define MM_TOSTRING     _SC("_tostring")\r
  51 #define MM_NEWMEMBER _SC("_newmember")\r
  52 #define MM_INHERITED _SC("_inherited")\r
  53 \r
  54 #define MINPOWER2 4\r
  55 \r
  56 struct SQRefCounted\r
  57 {\r
  58         SQRefCounted() { _uiRef = 0; _weakref = NULL; }\r
  59         virtual ~SQRefCounted();\r
  60         SQWeakRef *GetWeakRef(SQObjectType type);\r
  61         SQUnsignedInteger _uiRef;\r
  62         struct SQWeakRef *_weakref;\r
  63         virtual void Release()=0;\r
  64 };\r
  65 \r
  66 struct SQWeakRef : SQRefCounted\r
  67 {\r
  68         void Release();\r
  69         SQObject _obj;\r
  70 };\r
  71 \r
  72 #define _realval(o) (type((o)) != OT_WEAKREF?(SQObject)o:_weakref(o)->_obj)\r
  73 \r
  74 struct SQObjectPtr;\r
  75 \r
  76 #define __AddRef(type,unval) if(ISREFCOUNTED(type))     \\r
  77                 { \\r
  78                         unval.pRefCounted->_uiRef++; \\r
  79                 }  \r
  80 \r
  81 #define __Release(type,unval) if(ISREFCOUNTED(type) && ((--unval.pRefCounted->_uiRef)<=0))      \\r
  82                 {       \\r
  83                         unval.pRefCounted->Release();   \\r
  84                 }\r
  85 \r
  86 #define __ObjRelease(obj) { \\r
  87         if((obj)) {     \\r
  88                 (obj)->_uiRef--; \\r
  89                 if((obj)->_uiRef == 0) \\r
  90                         (obj)->Release(); \\r
  91                 (obj) = NULL;   \\r
  92         } \\r
  93 }\r
  94 \r
  95 #define __ObjAddRef(obj) { \\r
  96         (obj)->_uiRef++; \\r
  97 }\r
  98 \r
  99 #define type(obj) ((obj)._type)\r
 100 #define is_delegable(t) (type(t)&SQOBJECT_DELEGABLE)\r
 101 #define raw_type(obj) _RAW_TYPE((obj)._type)\r
 102 \r
 103 #define _integer(obj) ((obj)._unVal.nInteger)\r
 104 #define _float(obj) ((obj)._unVal.fFloat)\r
 105 #define _string(obj) ((obj)._unVal.pString)\r
 106 #define _table(obj) ((obj)._unVal.pTable)\r
 107 #define _array(obj) ((obj)._unVal.pArray)\r
 108 #define _closure(obj) ((obj)._unVal.pClosure)\r
 109 #define _generator(obj) ((obj)._unVal.pGenerator)\r
 110 #define _nativeclosure(obj) ((obj)._unVal.pNativeClosure)\r
 111 #define _userdata(obj) ((obj)._unVal.pUserData)\r
 112 #define _userpointer(obj) ((obj)._unVal.pUserPointer)\r
 113 #define _thread(obj) ((obj)._unVal.pThread)\r
 114 #define _funcproto(obj) ((obj)._unVal.pFunctionProto)\r
 115 #define _class(obj) ((obj)._unVal.pClass)\r
 116 #define _instance(obj) ((obj)._unVal.pInstance)\r
 117 #define _delegable(obj) ((SQDelegable *)(obj)._unVal.pDelegable)\r
 118 #define _weakref(obj) ((obj)._unVal.pWeakRef)\r
 119 #define _refcounted(obj) ((obj)._unVal.pRefCounted)\r
 120 #define _rawval(obj) ((obj)._unVal.pRefCounted)\r
 121 \r
 122 #define _stringval(obj) (obj)._unVal.pString->_val\r
 123 #define _userdataval(obj) (obj)._unVal.pUserData->_val\r
 124 \r
 125 #define tofloat(num) ((type(num)==OT_INTEGER)?(SQFloat)_integer(num):_float(num))\r
 126 #define tointeger(num) ((type(num)==OT_FLOAT)?(SQInteger)_float(num):_integer(num))\r
 127 /////////////////////////////////////////////////////////////////////////////////////\r
 128 /////////////////////////////////////////////////////////////////////////////////////\r
 129 struct SQObjectPtr : public SQObject\r
 130 {\r
 131         SQObjectPtr()\r
 132         {\r
 133                 _type=OT_NULL;\r
 134                 _unVal.pUserPointer=NULL;\r
 135         }\r
 136         SQObjectPtr(const SQObjectPtr &o)\r
 137         {\r
 138                 _type=o._type;\r
 139                 _unVal=o._unVal;\r
 140                 __AddRef(_type,_unVal);\r
 141         }\r
 142         SQObjectPtr(const SQObject &o)\r
 143         {\r
 144                 _type=o._type;\r
 145                 _unVal=o._unVal;\r
 146                 __AddRef(_type,_unVal);\r
 147         }\r
 148         SQObjectPtr(SQTable *pTable)\r
 149         {\r
 150                 _type=OT_TABLE;\r
 151                 _unVal.pTable=pTable;\r
 152                 assert(_unVal.pTable);\r
 153                 __AddRef(_type,_unVal);\r
 154         }\r
 155         SQObjectPtr(SQClass *pClass)\r
 156         {\r
 157                 _type=OT_CLASS;\r
 158                 _unVal.pClass=pClass;\r
 159                 assert(_unVal.pClass);\r
 160                 __AddRef(_type,_unVal);\r
 161         }\r
 162         SQObjectPtr(SQInstance *pInstance)\r
 163         {\r
 164                 _type=OT_INSTANCE;\r
 165                 _unVal.pInstance=pInstance;\r
 166                 assert(_unVal.pInstance);\r
 167                 __AddRef(_type,_unVal);\r
 168         }\r
 169         SQObjectPtr(SQArray *pArray)\r
 170         {\r
 171                 _type=OT_ARRAY;\r
 172                 _unVal.pArray=pArray;\r
 173                 assert(_unVal.pArray);\r
 174                 __AddRef(_type,_unVal);\r
 175         }\r
 176         SQObjectPtr(SQClosure *pClosure)\r
 177         {\r
 178                 _type=OT_CLOSURE;\r
 179                 _unVal.pClosure=pClosure;\r
 180                 assert(_unVal.pClosure);\r
 181                 __AddRef(_type,_unVal);\r
 182         }\r
 183         SQObjectPtr(SQGenerator *pGenerator)\r
 184         {\r
 185                 _type=OT_GENERATOR;\r
 186                 _unVal.pGenerator=pGenerator;\r
 187                 assert(_unVal.pGenerator);\r
 188                 __AddRef(_type,_unVal);\r
 189         }\r
 190         SQObjectPtr(SQNativeClosure *pNativeClosure)\r
 191         {\r
 192                 _type=OT_NATIVECLOSURE;\r
 193                 _unVal.pNativeClosure=pNativeClosure;\r
 194                 assert(_unVal.pNativeClosure);\r
 195                 __AddRef(_type,_unVal);\r
 196         }\r
 197         SQObjectPtr(SQString *pString)\r
 198         {\r
 199                 _type=OT_STRING;\r
 200                 _unVal.pString=pString;\r
 201                 assert(_unVal.pString);\r
 202                 __AddRef(_type,_unVal);\r
 203         }\r
 204         SQObjectPtr(SQUserData *pUserData)\r
 205         {\r
 206                 _type=OT_USERDATA;\r
 207                 _unVal.pUserData=pUserData;\r
 208                 assert(_unVal.pUserData);\r
 209                 __AddRef(_type,_unVal);\r
 210         }\r
 211         SQObjectPtr(SQVM *pThread)\r
 212         {\r
 213                 _type=OT_THREAD;\r
 214                 _unVal.pThread=pThread;\r
 215                 assert(_unVal.pThread);\r
 216                 __AddRef(_type,_unVal);\r
 217         }\r
 218         SQObjectPtr(SQWeakRef *pWeakRef)\r
 219         {\r
 220                 _type=OT_WEAKREF;\r
 221                 _unVal.pWeakRef=pWeakRef;\r
 222                 assert(_unVal.pWeakRef);\r
 223                 __AddRef(_type,_unVal);\r
 224         }\r
 225         SQObjectPtr(SQFunctionProto *pFunctionProto)\r
 226         {\r
 227                 _type=OT_FUNCPROTO;\r
 228                 _unVal.pFunctionProto=pFunctionProto;\r
 229                 assert(_unVal.pFunctionProto);\r
 230                 __AddRef(_type,_unVal);\r
 231         }\r
 232         SQObjectPtr(SQInteger nInteger)\r
 233         {\r
 234                 _unVal.pUserPointer=NULL;\r
 235                 _type=OT_INTEGER;\r
 236                 _unVal.nInteger=nInteger;\r
 237         }\r
 238         SQObjectPtr(SQFloat fFloat)\r
 239         {\r
 240                 _unVal.pUserPointer=NULL;\r
 241                 _type=OT_FLOAT;\r
 242                 _unVal.fFloat=fFloat;\r
 243         }\r
 244         SQObjectPtr(bool bBool)\r
 245         {\r
 246                 _unVal.pUserPointer=NULL;\r
 247                 _type = OT_BOOL;\r
 248                 _unVal.nInteger = bBool?1:0;\r
 249         }\r
 250         SQObjectPtr(SQUserPointer pUserPointer)\r
 251         {\r
 252                 _type=OT_USERPOINTER;\r
 253                 _unVal.pUserPointer=pUserPointer;\r
 254         }\r
 255         ~SQObjectPtr()\r
 256         {\r
 257                 __Release(_type,_unVal);\r
 258         }\r
 259         inline void Null()\r
 260         {\r
 261                 __Release(_type,_unVal);\r
 262                 _type=OT_NULL;\r
 263                 _unVal.pUserPointer=NULL;\r
 264         }\r
 265         inline SQObjectPtr& operator=(const SQObjectPtr& obj)\r
 266         { \r
 267                 SQObjectType tOldType;\r
 268                 SQObjectValue unOldVal;\r
 269                 tOldType=_type;\r
 270                 unOldVal=_unVal;\r
 271                 _unVal = obj._unVal;\r
 272                 _type = obj._type;\r
 273                 __AddRef(_type,_unVal);\r
 274                 __Release(tOldType,unOldVal);\r
 275                 return *this;\r
 276         }\r
 277         inline SQObjectPtr& operator=(const SQObject& obj)\r
 278         { \r
 279                 SQObjectType tOldType;\r
 280                 SQObjectValue unOldVal;\r
 281                 tOldType=_type;\r
 282                 unOldVal=_unVal;\r
 283                 _unVal = obj._unVal;\r
 284                 _type = obj._type;\r
 285                 __AddRef(_type,_unVal);\r
 286                 __Release(tOldType,unOldVal);\r
 287                 return *this;\r
 288         }\r
 289         private:\r
 290                 SQObjectPtr(const SQChar *){} //safety\r
 291 };\r
 292 /////////////////////////////////////////////////////////////////////////////////////\r
 293 #ifndef NO_GARBAGE_COLLECTOR\r
 294 #define MARK_FLAG 0x80000000\r
 295 struct SQCollectable : public SQRefCounted {\r
 296         SQCollectable *_next;\r
 297         SQCollectable *_prev;\r
 298         SQSharedState *_sharedstate;\r
 299         virtual void Release()=0;\r
 300         virtual void Mark(SQCollectable **chain)=0;\r
 301         void UnMark();\r
 302         virtual void Finalize()=0;\r
 303         static void AddToChain(SQCollectable **chain,SQCollectable *c);\r
 304         static void RemoveFromChain(SQCollectable **chain,SQCollectable *c);\r
 305 };\r
 306 \r
 307 \r
 308 #define ADD_TO_CHAIN(chain,obj) AddToChain(chain,obj)\r
 309 #define REMOVE_FROM_CHAIN(chain,obj) {if(!(_uiRef&MARK_FLAG))RemoveFromChain(chain,obj);}\r
 310 #define CHAINABLE_OBJ SQCollectable\r
 311 #define INIT_CHAIN() {_next=NULL;_prev=NULL;_sharedstate=ss;}\r
 312 #else\r
 313 \r
 314 #define ADD_TO_CHAIN(chain,obj) ((void)0)\r
 315 #define REMOVE_FROM_CHAIN(chain,obj) ((void)0)\r
 316 #define CHAINABLE_OBJ SQRefCounted\r
 317 #define INIT_CHAIN() ((void)0)\r
 318 #endif\r
 319 \r
 320 struct SQDelegable : public CHAINABLE_OBJ {\r
 321         bool SetDelegate(SQTable *m);\r
 322         virtual bool GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res);\r
 323         SQTable *_delegate;\r
 324 };\r
 325 \r
 326 SQUnsignedInteger TranslateIndex(const SQObjectPtr &idx);\r
 327 typedef sqvector<SQObjectPtr> SQObjectPtrVec;\r
 328 typedef sqvector<SQInteger> SQIntVec;\r
 329 \r
 330 \r
 331 #endif //_SQOBJECT_H_\r