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