src/squirrel/squirrel/sqobject.cpp

   1 /*
   2         see copyright notice in squirrel.h
   3 */
   4 #include "sqpcheader.h"
   5 #include "sqvm.h"
   6 #include "sqstring.h"
   7 #include "sqarray.h"
   8 #include "sqtable.h"
   9 #include "squserdata.h"
  10 #include "sqfuncproto.h"
  11 #include "sqclass.h"
  12 #include "sqclosure.h"
  13
  14
  15 const SQChar *IdType2Name(SQObjectType type)
  16 {
  17         switch(_RAW_TYPE(type))
  18         {
  19         case _RT_NULL:return _SC("null");
  20         case _RT_INTEGER:return _SC("integer");
  21         case _RT_FLOAT:return _SC("float");
  22         case _RT_BOOL:return _SC("bool");
  23         case _RT_STRING:return _SC("string");
  24         case _RT_TABLE:return _SC("table");
  25         case _RT_ARRAY:return _SC("array");
  26         case _RT_GENERATOR:return _SC("generator");
  27         case _RT_CLOSURE:
  28         case _RT_NATIVECLOSURE:
  29                 return _SC("function");
  30         case _RT_USERDATA:
  31         case _RT_USERPOINTER:
  32                 return _SC("userdata");
  33         case _RT_THREAD: return _SC("thread");
  34         case _RT_FUNCPROTO: return _SC("function");
  35         case _RT_CLASS: return _SC("class");
  36         case _RT_INSTANCE: return _SC("instance");
  37         case _RT_WEAKREF: return _SC("weakref");
  38         default:
  39                 return NULL;
  40         }
  41 }
  42
  43 const SQChar *GetTypeName(const SQObjectPtr &obj1)
  44 {
  45         return IdType2Name(type(obj1));
  46 }
  47
  48 SQString *SQString::Create(SQSharedState *ss,const SQChar *s,SQInteger len)
  49 {
  50         SQString *str=ADD_STRING(ss,s,len);
  51         str->_sharedstate=ss;
  52         return str;
  53 }
  54
  55 void SQString::Release()
  56 {
  57         REMOVE_STRING(_sharedstate,this);
  58 }
  59
  60 SQInteger SQString::Next(const SQObjectPtr &refpos, SQObjectPtr &outkey, SQObjectPtr &outval)
  61 {
  62         SQInteger idx = (SQInteger)TranslateIndex(refpos);
  63         while(idx < _len){
  64                 outkey = (SQInteger)idx;
  65                 outval = SQInteger(_val[idx]);
  66                 //return idx for the next iteration
  67                 return ++idx;
  68         }
  69         //nothing to iterate anymore
  70         return -1;
  71 }
  72
  73 SQUnsignedInteger TranslateIndex(const SQObjectPtr &idx)
  74 {
  75         switch(type(idx)){
  76                 case OT_NULL:
  77                         return 0;
  78                 case OT_INTEGER:
  79                         return (SQUnsignedInteger)_integer(idx);
  80                 default: assert(0); break;
  81         }
  82         return 0;
  83 }
  84
  85 SQWeakRef *SQRefCounted::GetWeakRef(SQObjectType type)
  86 {
  87         if(!_weakref) {
  88                 sq_new(_weakref,SQWeakRef);
  89                 _weakref->_obj._type = type;
  90                 _weakref->_obj._unVal.pRefCounted = this;
  91         }
  92         return _weakref;
  93 }
  94
  95 SQRefCounted::~SQRefCounted()
  96 {
  97         if(_weakref) {
  98                 _weakref->_obj._type = OT_NULL;
  99                 _weakref->_obj._unVal.pRefCounted = NULL;
 100         }
 101 }
 102
 103 void SQWeakRef::Release() {
 104         if(ISREFCOUNTED(_obj._type)) {
 105                 _obj._unVal.pRefCounted->_weakref = NULL;
 106         }
 107         sq_delete(this,SQWeakRef);
 108 }
 109
 110 bool SQDelegable::GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res) {
 111         if(_delegate) {
 112                 return _delegate->Get((*_ss(v)->_metamethods)[mm],res);
 113         }
 114         return false;
 115 }
 116
 117 bool SQDelegable::SetDelegate(SQTable *mt)
 118 {
 119         SQTable *temp = mt;
 120         while (temp) {
 121                 if (temp->_delegate == this) return false; //cycle detected
 122                 temp = temp->_delegate;
 123         }
 124         if (mt) __ObjAddRef(mt);
 125         __ObjRelease(_delegate);
 126         _delegate = mt;
 127         return true;
 128 }
 129
 130 bool SQGenerator::Yield(SQVM *v)
 131 {
 132         if(_state==eSuspended) { v->Raise_Error(_SC("internal vm error, yielding dead generator"));  return false;}
 133         if(_state==eDead) { v->Raise_Error(_SC("internal vm error, yielding a dead generator")); return false; }
 134         SQInteger size = v->_top-v->_stackbase;
 135         _ci=*v->ci;
 136         _stack.resize(size);
 137         for(SQInteger n =0; n<size; n++) {
 138                 _stack._vals[n] = v->_stack[v->_stackbase+n];
 139                 v->_stack[v->_stackbase+n] = _null_;
 140         }
 141         SQInteger nvargs = v->ci->_vargs.size;
 142         SQInteger vargsbase = v->ci->_vargs.base;
 143         for(SQInteger j = nvargs - 1; j >= 0; j--) {
 144                 _vargsstack.push_back(v->_vargsstack[vargsbase+j]);
 145         }
 146         _ci._generator=_null_;
 147         for(SQInteger i=0;i<_ci._etraps;i++) {
 148                 _etraps.push_back(v->_etraps.top());
 149                 v->_etraps.pop_back();
 150         }
 151         _state=eSuspended;
 152         return true;
 153 }
 154
 155 bool SQGenerator::Resume(SQVM *v,SQInteger target)
 156 {
 157         SQInteger size=_stack.size();
 158         if(_state==eDead){ v->Raise_Error(_SC("resuming dead generator")); return false; }
 159         if(_state==eRunning){ v->Raise_Error(_SC("resuming active generator")); return false; }
 160         SQInteger prevtop=v->_top-v->_stackbase;
 161         PUSH_CALLINFO(v,_ci);
 162         SQInteger oldstackbase=v->_stackbase;
 163         v->_stackbase = v->_top;
 164         v->ci->_target = (SQInt32)target;
 165         v->ci->_generator = SQObjectPtr(this);
 166         v->ci->_vargs.size = (unsigned short)_vargsstack.size();
 167
 168         for(SQInteger i=0;i<_ci._etraps;i++) {
 169                 v->_etraps.push_back(_etraps.top());
 170                 _etraps.pop_back();
 171         }
 172         for(SQInteger n =0; n<size; n++) {
 173                 v->_stack[v->_stackbase+n] = _stack._vals[n];
 174                 _stack._vals[0] = _null_;
 175         }
 176         while(_vargsstack.size()) {
 177                 v->_vargsstack.push_back(_vargsstack.back());
 178                 _vargsstack.pop_back();
 179         }
 180         v->ci->_vargs.base = (unsigned short)(v->_vargsstack.size() - v->ci->_vargs.size);
 181         v->_top=v->_stackbase+size;
 182         v->ci->_prevtop = (SQInt32)prevtop;
 183         v->ci->_prevstkbase = (SQInt32)(v->_stackbase - oldstackbase);
 184         _state=eRunning;
 185         if (type(v->_debughook) != OT_NULL && _rawval(v->_debughook) != _rawval(v->ci->_closure))
 186                 v->CallDebugHook(_SC('c'));
 187
 188         return true;
 189 }
 190
 191 void SQArray::Extend(const SQArray *a){
 192         SQInteger xlen;
 193         if((xlen=a->Size()))
 194                 for(SQInteger i=0;i<xlen;i++)
 195                         Append(a->_values[i]);
 196 }
 197
 198 const SQChar* SQFunctionProto::GetLocal(SQVM *vm,SQUnsignedInteger stackbase,SQUnsignedInteger nseq,SQUnsignedInteger nop)
 199 {
 200         SQUnsignedInteger nvars=_nlocalvarinfos;
 201         const SQChar *res=NULL;
 202         if(nvars>=nseq){
 203                 for(SQUnsignedInteger i=0;i<nvars;i++){
 204                         if(_localvarinfos[i]._start_op<=nop && _localvarinfos[i]._end_op>=nop)
 205                         {
 206                                 if(nseq==0){
 207                                         vm->Push(vm->_stack[stackbase+_localvarinfos[i]._pos]);
 208                                         res=_stringval(_localvarinfos[i]._name);
 209                                         break;
 210                                 }
 211                                 nseq--;
 212                         }
 213                 }
 214         }
 215         return res;
 216 }
 217
 218 SQInteger SQFunctionProto::GetLine(SQInstruction *curr)
 219 {
 220         SQInteger op = (SQInteger)(curr-_instructions);
 221         SQInteger line=_lineinfos[0]._line;
 222         for(SQInteger i=1;i<_nlineinfos;i++){
 223                 if(_lineinfos[i]._op>=op)
 224                         return line;
 225                 line=_lineinfos[i]._line;
 226         }
 227         return line;
 228 }
 229
 230 #define _CHECK_IO(exp)  { if(!exp)return false; }
 231 bool SafeWrite(HSQUIRRELVM v,SQWRITEFUNC write,SQUserPointer up,SQUserPointer dest,SQInteger size)
 232 {
 233         if(write(up,dest,size) != size) {
 234                 v->Raise_Error(_SC("io error (write function failure)"));
 235                 return false;
 236         }
 237         return true;
 238 }
 239
 240 bool SafeRead(HSQUIRRELVM v,SQWRITEFUNC read,SQUserPointer up,SQUserPointer dest,SQInteger size)
 241 {
 242         if(size && read(up,dest,size) != size) {
 243                 v->Raise_Error(_SC("io error, read function failure, the origin stream could be corrupted/trucated"));
 244                 return false;
 245         }
 246         return true;
 247 }
 248
 249 bool WriteTag(HSQUIRRELVM v,SQWRITEFUNC write,SQUserPointer up,SQInteger tag)
 250 {
 251         return SafeWrite(v,write,up,&tag,sizeof(tag));
 252 }
 253
 254 bool CheckTag(HSQUIRRELVM v,SQWRITEFUNC read,SQUserPointer up,SQInteger tag)
 255 {
 256         SQInteger t;
 257         _CHECK_IO(SafeRead(v,read,up,&t,sizeof(t)));
 258         if(t != tag){
 259                 v->Raise_Error(_SC("invalid or corrupted closure stream"));
 260                 return false;
 261         }
 262         return true;
 263 }
 264
 265 bool WriteObject(HSQUIRRELVM v,SQUserPointer up,SQWRITEFUNC write,SQObjectPtr &o)
 266 {
 267         _CHECK_IO(SafeWrite(v,write,up,&type(o),sizeof(SQObjectType)));
 268         switch(type(o)){
 269         case OT_STRING:
 270                 _CHECK_IO(SafeWrite(v,write,up,&_string(o)->_len,sizeof(SQInteger)));
 271                 _CHECK_IO(SafeWrite(v,write,up,_stringval(o),rsl(_string(o)->_len)));
 272                 break;
 273         case OT_INTEGER:
 274                 _CHECK_IO(SafeWrite(v,write,up,&_integer(o),sizeof(SQInteger)));break;
 275         case OT_FLOAT:
 276                 _CHECK_IO(SafeWrite(v,write,up,&_float(o),sizeof(SQFloat)));break;
 277         case OT_NULL:
 278                 break;
 279         default:
 280                 v->Raise_Error(_SC("cannot serialize a %s"),GetTypeName(o));
 281                 return false;
 282         }
 283         return true;
 284 }
 285
 286 bool ReadObject(HSQUIRRELVM v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &o)
 287 {
 288         SQObjectType t;
 289         _CHECK_IO(SafeRead(v,read,up,&t,sizeof(SQObjectType)));
 290         switch(t){
 291         case OT_STRING:{
 292                 SQInteger len;
 293                 _CHECK_IO(SafeRead(v,read,up,&len,sizeof(SQInteger)));
 294                 _CHECK_IO(SafeRead(v,read,up,_ss(v)->GetScratchPad(rsl(len)),rsl(len)));
 295                 o=SQString::Create(_ss(v),_ss(v)->GetScratchPad(-1),len);
 296                                    }
 297                 break;
 298         case OT_INTEGER:{
 299                 SQInteger i;
 300                 _CHECK_IO(SafeRead(v,read,up,&i,sizeof(SQInteger))); o = i; break;
 301                                         }
 302         case OT_FLOAT:{
 303                 SQFloat f;
 304                 _CHECK_IO(SafeRead(v,read,up,&f,sizeof(SQFloat))); o = f; break;
 305                                   }
 306         case OT_NULL:
 307                 o=_null_;
 308                 break;
 309         default:
 310                 v->Raise_Error(_SC("cannot serialize a %s"),IdType2Name(t));
 311                 return false;
 312         }
 313         return true;
 314 }
 315
 316 bool SQClosure::Save(SQVM *v,SQUserPointer up,SQWRITEFUNC write)
 317 {
 318         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_HEAD));
 319         _CHECK_IO(WriteTag(v,write,up,sizeof(SQChar)));
 320         _CHECK_IO(_funcproto(_function)->Save(v,up,write));
 321         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_TAIL));
 322         return true;
 323 }
 324
 325 bool SQClosure::Load(SQVM *v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &ret)
 326 {
 327         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_HEAD));
 328         _CHECK_IO(CheckTag(v,read,up,sizeof(SQChar)));
 329         SQObjectPtr func;
 330         _CHECK_IO(SQFunctionProto::Load(v,up,read,func));
 331         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_TAIL));
 332         ret = SQClosure::Create(_ss(v),_funcproto(func));
 333         return true;
 334 }
 335
 336 bool SQFunctionProto::Save(SQVM *v,SQUserPointer up,SQWRITEFUNC write)
 337 {
 338         SQInteger i,nliterals = _nliterals,nparameters = _nparameters;
 339         SQInteger noutervalues = _noutervalues,nlocalvarinfos = _nlocalvarinfos;
 340         SQInteger nlineinfos=_nlineinfos,ninstructions = _ninstructions,nfunctions=_nfunctions;
 341         SQInteger ndefaultparams = _ndefaultparams;
 342         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 343         _CHECK_IO(WriteObject(v,up,write,_sourcename));
 344         _CHECK_IO(WriteObject(v,up,write,_name));
 345         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 346         _CHECK_IO(SafeWrite(v,write,up,&nliterals,sizeof(nliterals)));
 347         _CHECK_IO(SafeWrite(v,write,up,&nparameters,sizeof(nparameters)));
 348         _CHECK_IO(SafeWrite(v,write,up,&noutervalues,sizeof(noutervalues)));
 349         _CHECK_IO(SafeWrite(v,write,up,&nlocalvarinfos,sizeof(nlocalvarinfos)));
 350         _CHECK_IO(SafeWrite(v,write,up,&nlineinfos,sizeof(nlineinfos)));
 351         _CHECK_IO(SafeWrite(v,write,up,&ndefaultparams,sizeof(ndefaultparams)));
 352         _CHECK_IO(SafeWrite(v,write,up,&ninstructions,sizeof(ninstructions)));
 353         _CHECK_IO(SafeWrite(v,write,up,&nfunctions,sizeof(nfunctions)));
 354         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 355         for(i=0;i<nliterals;i++){
 356                 _CHECK_IO(WriteObject(v,up,write,_literals[i]));
 357         }
 358
 359         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 360         for(i=0;i<nparameters;i++){
 361                 _CHECK_IO(WriteObject(v,up,write,_parameters[i]));
 362         }
 363
 364         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 365         for(i=0;i<noutervalues;i++){
 366                 _CHECK_IO(SafeWrite(v,write,up,&_outervalues[i]._type,sizeof(SQUnsignedInteger)));
 367                 _CHECK_IO(WriteObject(v,up,write,_outervalues[i]._src));
 368                 _CHECK_IO(WriteObject(v,up,write,_outervalues[i]._name));
 369         }
 370
 371         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 372         for(i=0;i<nlocalvarinfos;i++){
 373                 SQLocalVarInfo &lvi=_localvarinfos[i];
 374                 _CHECK_IO(WriteObject(v,up,write,lvi._name));
 375                 _CHECK_IO(SafeWrite(v,write,up,&lvi._pos,sizeof(SQUnsignedInteger)));
 376                 _CHECK_IO(SafeWrite(v,write,up,&lvi._start_op,sizeof(SQUnsignedInteger)));
 377                 _CHECK_IO(SafeWrite(v,write,up,&lvi._end_op,sizeof(SQUnsignedInteger)));
 378         }
 379
 380         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 381         _CHECK_IO(SafeWrite(v,write,up,_lineinfos,sizeof(SQLineInfo)*nlineinfos));
 382
 383         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 384         _CHECK_IO(SafeWrite(v,write,up,_defaultparams,sizeof(SQInteger)*ndefaultparams));
 385
 386         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 387         _CHECK_IO(SafeWrite(v,write,up,_instructions,sizeof(SQInstruction)*ninstructions));
 388
 389         _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
 390         for(i=0;i<nfunctions;i++){
 391                 _CHECK_IO(_funcproto(_functions[i])->Save(v,up,write));
 392         }
 393         _CHECK_IO(SafeWrite(v,write,up,&_stacksize,sizeof(_stacksize)));
 394         _CHECK_IO(SafeWrite(v,write,up,&_bgenerator,sizeof(_bgenerator)));
 395         _CHECK_IO(SafeWrite(v,write,up,&_varparams,sizeof(_varparams)));
 396         return true;
 397 }
 398
 399 bool SQFunctionProto::Load(SQVM *v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &ret)
 400 {
 401         SQInteger i, nliterals,nparameters;
 402         SQInteger noutervalues ,nlocalvarinfos ;
 403         SQInteger nlineinfos,ninstructions ,nfunctions,ndefaultparams ;
 404         SQObjectPtr sourcename, name;
 405         SQObjectPtr o;
 406         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 407         _CHECK_IO(ReadObject(v, up, read, sourcename));
 408         _CHECK_IO(ReadObject(v, up, read, name));
 409
 410         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 411         _CHECK_IO(SafeRead(v,read,up, &nliterals, sizeof(nliterals)));
 412         _CHECK_IO(SafeRead(v,read,up, &nparameters, sizeof(nparameters)));
 413         _CHECK_IO(SafeRead(v,read,up, &noutervalues, sizeof(noutervalues)));
 414         _CHECK_IO(SafeRead(v,read,up, &nlocalvarinfos, sizeof(nlocalvarinfos)));
 415         _CHECK_IO(SafeRead(v,read,up, &nlineinfos, sizeof(nlineinfos)));
 416         _CHECK_IO(SafeRead(v,read,up, &ndefaultparams, sizeof(ndefaultparams)));
 417         _CHECK_IO(SafeRead(v,read,up, &ninstructions, sizeof(ninstructions)));
 418         _CHECK_IO(SafeRead(v,read,up, &nfunctions, sizeof(nfunctions)));
 419
 420
 421         SQFunctionProto *f = SQFunctionProto::Create(ninstructions,nliterals,nparameters,
 422                         nfunctions,noutervalues,nlineinfos,nlocalvarinfos,ndefaultparams);
 423         SQObjectPtr proto = f; //gets a ref in case of failure
 424         f->_sourcename = sourcename;
 425         f->_name = name;
 426
 427         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 428
 429         for(i = 0;i < nliterals; i++){
 430                 _CHECK_IO(ReadObject(v, up, read, o));
 431                 f->_literals[i] = o;
 432         }
 433         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 434
 435         for(i = 0; i < nparameters; i++){
 436                 _CHECK_IO(ReadObject(v, up, read, o));
 437                 f->_parameters[i] = o;
 438         }
 439         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 440
 441         for(i = 0; i < noutervalues; i++){
 442                 SQUnsignedInteger type;
 443                 SQObjectPtr name;
 444                 _CHECK_IO(SafeRead(v,read,up, &type, sizeof(SQUnsignedInteger)));
 445                 _CHECK_IO(ReadObject(v, up, read, o));
 446                 _CHECK_IO(ReadObject(v, up, read, name));
 447                 f->_outervalues[i] = SQOuterVar(name,o, (SQOuterType)type);
 448         }
 449         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 450
 451         for(i = 0; i < nlocalvarinfos; i++){
 452                 SQLocalVarInfo lvi;
 453                 _CHECK_IO(ReadObject(v, up, read, lvi._name));
 454                 _CHECK_IO(SafeRead(v,read,up, &lvi._pos, sizeof(SQUnsignedInteger)));
 455                 _CHECK_IO(SafeRead(v,read,up, &lvi._start_op, sizeof(SQUnsignedInteger)));
 456                 _CHECK_IO(SafeRead(v,read,up, &lvi._end_op, sizeof(SQUnsignedInteger)));
 457                 f->_localvarinfos[i] = lvi;
 458         }
 459         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 460         _CHECK_IO(SafeRead(v,read,up, f->_lineinfos, sizeof(SQLineInfo)*nlineinfos));
 461
 462         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 463         _CHECK_IO(SafeRead(v,read,up, f->_defaultparams, sizeof(SQInteger)*ndefaultparams));
 464
 465         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 466         _CHECK_IO(SafeRead(v,read,up, f->_instructions, sizeof(SQInstruction)*ninstructions));
 467
 468         _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
 469         for(i = 0; i < nfunctions; i++){
 470                 _CHECK_IO(_funcproto(o)->Load(v, up, read, o));
 471                 f->_functions[i] = o;
 472         }
 473         _CHECK_IO(SafeRead(v,read,up, &f->_stacksize, sizeof(f->_stacksize)));
 474         _CHECK_IO(SafeRead(v,read,up, &f->_bgenerator, sizeof(f->_bgenerator)));
 475         _CHECK_IO(SafeRead(v,read,up, &f->_varparams, sizeof(f->_varparams)));
 476
 477         ret = f;
 478         return true;
 479 }
 480
 481 #ifndef NO_GARBAGE_COLLECTOR
 482
 483 #define START_MARK()    if(!(_uiRef&MARK_FLAG)){ \
 484                 _uiRef|=MARK_FLAG;
 485
 486 #define END_MARK() RemoveFromChain(&_sharedstate->_gc_chain, this); \
 487                 AddToChain(chain, this); }
 488
 489 void SQVM::Mark(SQCollectable **chain)
 490 {
 491         START_MARK()
 492                 SQSharedState::MarkObject(_lasterror,chain);
 493                 SQSharedState::MarkObject(_errorhandler,chain);
 494                 SQSharedState::MarkObject(_debughook,chain);
 495                 SQSharedState::MarkObject(_roottable, chain);
 496                 SQSharedState::MarkObject(temp_reg, chain);
 497                 for(SQUnsignedInteger i = 0; i < _stack.size(); i++) SQSharedState::MarkObject(_stack[i], chain);
 498                 for(SQUnsignedInteger j = 0; j < _vargsstack.size(); j++) SQSharedState::MarkObject(_vargsstack[j], chain);
 499         END_MARK()
 500 }
 501
 502 void SQArray::Mark(SQCollectable **chain)
 503 {
 504         START_MARK()
 505                 SQInteger len = _values.size();
 506                 for(SQInteger i = 0;i < len; i++) SQSharedState::MarkObject(_values[i], chain);
 507         END_MARK()
 508 }
 509 void SQTable::Mark(SQCollectable **chain)
 510 {
 511         START_MARK()
 512                 if(_delegate) _delegate->Mark(chain);
 513                 SQInteger len = _numofnodes;
 514                 for(SQInteger i = 0; i < len; i++){
 515                         SQSharedState::MarkObject(_nodes[i].key, chain);
 516                         SQSharedState::MarkObject(_nodes[i].val, chain);
 517                 }
 518         END_MARK()
 519 }
 520
 521 void SQClass::Mark(SQCollectable **chain)
 522 {
 523         START_MARK()
 524                 _members->Mark(chain);
 525                 if(_base) _base->Mark(chain);
 526                 SQSharedState::MarkObject(_attributes, chain);
 527                 for(SQUnsignedInteger i =0; i< _defaultvalues.size(); i++) {
 528                         SQSharedState::MarkObject(_defaultvalues[i].val, chain);
 529                         SQSharedState::MarkObject(_defaultvalues[i].attrs, chain);
 530                 }
 531                 for(SQUnsignedInteger j =0; j< _methods.size(); j++) {
 532                         SQSharedState::MarkObject(_methods[j].val, chain);
 533                         SQSharedState::MarkObject(_methods[j].attrs, chain);
 534                 }
 535                 for(SQUnsignedInteger k =0; k< _metamethods.size(); k++) {
 536                         SQSharedState::MarkObject(_metamethods[k], chain);
 537                 }
 538         END_MARK()
 539 }
 540
 541 void SQInstance::Mark(SQCollectable **chain)
 542 {
 543         START_MARK()
 544                 _class->Mark(chain);
 545                 SQUnsignedInteger nvalues = _class->_defaultvalues.size();
 546                 for(SQUnsignedInteger i =0; i< nvalues; i++) {
 547                         SQSharedState::MarkObject(_values[i], chain);
 548                 }
 549         END_MARK()
 550 }
 551
 552 void SQGenerator::Mark(SQCollectable **chain)
 553 {
 554         START_MARK()
 555                 for(SQUnsignedInteger i = 0; i < _stack.size(); i++) SQSharedState::MarkObject(_stack[i], chain);
 556                 for(SQUnsignedInteger j = 0; j < _vargsstack.size(); j++) SQSharedState::MarkObject(_vargsstack[j], chain);
 557                 SQSharedState::MarkObject(_closure, chain);
 558         END_MARK()
 559 }
 560
 561 void SQClosure::Mark(SQCollectable **chain)
 562 {
 563         START_MARK()
 564                 for(SQUnsignedInteger i = 0; i < _outervalues.size(); i++) SQSharedState::MarkObject(_outervalues[i], chain);
 565                 for(SQUnsignedInteger i = 0; i < _defaultparams.size(); i++) SQSharedState::MarkObject(_defaultparams[i], chain);
 566         END_MARK()
 567 }
 568
 569 void SQNativeClosure::Mark(SQCollectable **chain)
 570 {
 571         START_MARK()
 572                 for(SQUnsignedInteger i = 0; i < _outervalues.size(); i++) SQSharedState::MarkObject(_outervalues[i], chain);
 573         END_MARK()
 574 }
 575
 576 void SQUserData::Mark(SQCollectable **chain){
 577         START_MARK()
 578                 if(_delegate) _delegate->Mark(chain);
 579         END_MARK()
 580 }
 581
 582 void SQCollectable::UnMark() { _uiRef&=~MARK_FLAG; }
 583
 584 #endif
 585