sqobject.cpp

00001 /*
00002   see copyright notice in squirrel.h
00003 */
00004 #include "sqpcheader.h"
00005 #include "sqvm.h"
00006 #include "sqstring.h"
00007 #include "sqarray.h"
00008 #include "sqtable.h"
00009 #include "squserdata.h"
00010 #include "sqfuncproto.h"
00011 #include "sqclass.h"
00012 #include "sqclosure.h"
00013 
00014 
00015 const SQChar *IdType2Name(SQObjectType type)
00016 {
00017   switch(_RAW_TYPE(type))
00018   {
00019   case _RT_NULL:return _SC("null");
00020   case _RT_INTEGER:return _SC("integer");
00021   case _RT_FLOAT:return _SC("float");
00022   case _RT_BOOL:return _SC("bool");
00023   case _RT_STRING:return _SC("string");
00024   case _RT_TABLE:return _SC("table");
00025   case _RT_ARRAY:return _SC("array");
00026   case _RT_GENERATOR:return _SC("generator");
00027   case _RT_CLOSURE:
00028   case _RT_NATIVECLOSURE:
00029     return _SC("function");
00030   case _RT_USERDATA:
00031   case _RT_USERPOINTER:
00032     return _SC("userdata");
00033   case _RT_THREAD: return _SC("thread");
00034   case _RT_FUNCPROTO: return _SC("function");
00035   case _RT_CLASS: return _SC("class");
00036   case _RT_INSTANCE: return _SC("instance");
00037   case _RT_WEAKREF: return _SC("weakref");
00038   default:
00039     return NULL;
00040   }
00041 }
00042 
00043 const SQChar *GetTypeName(const SQObjectPtr &obj1)
00044 {
00045   return IdType2Name(type(obj1));
00046 }
00047 
00048 SQString *SQString::Create(SQSharedState *ss,const SQChar *s,SQInteger len)
00049 {
00050   SQString *str=ADD_STRING(ss,s,len);
00051   str->_sharedstate=ss;
00052   return str;
00053 }
00054 
00055 void SQString::Release()
00056 {
00057   REMOVE_STRING(_sharedstate,this);
00058 }
00059 
00060 SQInteger SQString::Next(const SQObjectPtr &refpos, SQObjectPtr &outkey, SQObjectPtr &outval)
00061 {
00062   SQInteger idx = (SQInteger)TranslateIndex(refpos);
00063   while(idx < _len){
00064     outkey = (SQInteger)idx;
00065     outval = SQInteger(_val[idx]);
00066     //return idx for the next iteration
00067     return ++idx;
00068   }
00069   //nothing to iterate anymore
00070   return -1;
00071 }
00072 
00073 SQUnsignedInteger TranslateIndex(const SQObjectPtr &idx)
00074 {
00075   switch(type(idx)){
00076     case OT_NULL:
00077       return 0;
00078     case OT_INTEGER:
00079       return (SQUnsignedInteger)_integer(idx);
00080     default: assert(0); break;
00081   }
00082   return 0;
00083 }
00084 
00085 SQWeakRef *SQRefCounted::GetWeakRef(SQObjectType type)
00086 {
00087   if(!_weakref) {
00088     sq_new(_weakref,SQWeakRef);
00089     _weakref->_obj._type = type;
00090     _weakref->_obj._unVal.pRefCounted = this;
00091   }
00092   return _weakref;
00093 }
00094 
00095 SQRefCounted::~SQRefCounted()
00096 {
00097   if(_weakref) {
00098     _weakref->_obj._type = OT_NULL;
00099     _weakref->_obj._unVal.pRefCounted = NULL;
00100   }
00101 }
00102 
00103 void SQWeakRef::Release() {
00104   if(ISREFCOUNTED(_obj._type)) {
00105     _obj._unVal.pRefCounted->_weakref = NULL;
00106   }
00107   sq_delete(this,SQWeakRef);
00108 }
00109 
00110 bool SQDelegable::GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res) {
00111   if(_delegate) {
00112     return _delegate->Get((*_ss(v)->_metamethods)[mm],res);
00113   }
00114   return false;
00115 }
00116 
00117 bool SQDelegable::SetDelegate(SQTable *mt)
00118 {
00119   SQTable *temp = mt;
00120   if(temp == this) return false;
00121   while (temp) {
00122     if (temp->_delegate == this) return false; //cycle detected
00123     temp = temp->_delegate;
00124   }
00125   if (mt) __ObjAddRef(mt);
00126   __ObjRelease(_delegate);
00127   _delegate = mt;
00128   return true;
00129 }
00130 
00131 bool SQGenerator::Yield(SQVM *v)
00132 {
00133   if(_state==eSuspended) { v->Raise_Error(_SC("internal vm error, yielding dead generator"));  return false;}
00134   if(_state==eDead) { v->Raise_Error(_SC("internal vm error, yielding a dead generator")); return false; }
00135   SQInteger size = v->_top-v->_stackbase;
00136   _ci=*v->ci;
00137   _stack.resize(size);
00138   for(SQInteger n =0; n<size; n++) {
00139     _stack._vals[n] = v->_stack[v->_stackbase+n];
00140     v->_stack[v->_stackbase+n] = _null_;
00141   }
00142   SQInteger nvargs = v->ci->_vargs.size;
00143   SQInteger vargsbase = v->ci->_vargs.base;
00144   for(SQInteger j = nvargs - 1; j >= 0; j--) {
00145     _vargsstack.push_back(v->_vargsstack[vargsbase+j]);
00146   }
00147   _ci._generator=NULL;
00148   for(SQInteger i=0;i<_ci._etraps;i++) {
00149     _etraps.push_back(v->_etraps.top());
00150     v->_etraps.pop_back();
00151   }
00152   _state=eSuspended;
00153   return true;
00154 }
00155 
00156 bool SQGenerator::Resume(SQVM *v,SQInteger target)
00157 {
00158   SQInteger size=_stack.size();
00159   if(_state==eDead){ v->Raise_Error(_SC("resuming dead generator")); return false; }
00160   if(_state==eRunning){ v->Raise_Error(_SC("resuming active generator")); return false; }
00161   SQInteger prevtop=v->_top-v->_stackbase;
00162   PUSH_CALLINFO(v,_ci);
00163   SQInteger oldstackbase=v->_stackbase;
00164   v->_stackbase = v->_top;
00165   v->ci->_target = (SQInt32)target;
00166   v->ci->_generator = this;
00167   v->ci->_vargs.size = (unsigned short)_vargsstack.size();
00168 
00169   for(SQInteger i=0;i<_ci._etraps;i++) {
00170     v->_etraps.push_back(_etraps.top());
00171     _etraps.pop_back();
00172   }
00173   for(SQInteger n =0; n<size; n++) {
00174     v->_stack[v->_stackbase+n] = _stack._vals[n];
00175     _stack._vals[0] = _null_;
00176   }
00177   while(_vargsstack.size()) {
00178     v->_vargsstack.push_back(_vargsstack.back());
00179     _vargsstack.pop_back();
00180   }
00181   v->ci->_vargs.base = (unsigned short)(v->_vargsstack.size() - v->ci->_vargs.size);
00182   v->_top=v->_stackbase+size;
00183   v->ci->_prevtop = (SQInt32)prevtop;
00184   v->ci->_prevstkbase = (SQInt32)(v->_stackbase - oldstackbase);
00185   _state=eRunning;
00186   if (type(v->_debughook) != OT_NULL && _rawval(v->_debughook) != _rawval(v->ci->_closure))
00187     v->CallDebugHook(_SC('c'));
00188 
00189   return true;
00190 }
00191 
00192 void SQArray::Extend(const SQArray *a){
00193   SQInteger xlen;
00194   if((xlen=a->Size()))
00195     for(SQInteger i=0;i<xlen;i++)
00196       Append(a->_values[i]);
00197 }
00198 
00199 const SQChar* SQFunctionProto::GetLocal(SQVM *vm,SQUnsignedInteger stackbase,SQUnsignedInteger nseq,SQUnsignedInteger nop)
00200 {
00201   SQUnsignedInteger nvars=_nlocalvarinfos;
00202   const SQChar *res=NULL;
00203   if(nvars>=nseq){
00204     for(SQUnsignedInteger i=0;i<nvars;i++){
00205       if(_localvarinfos[i]._start_op<=nop && _localvarinfos[i]._end_op>=nop)
00206       {
00207         if(nseq==0){
00208           vm->Push(vm->_stack[stackbase+_localvarinfos[i]._pos]);
00209           res=_stringval(_localvarinfos[i]._name);
00210           break;
00211         }
00212         nseq--;
00213       }
00214     }
00215   }
00216   return res;
00217 }
00218 
00219 SQInteger SQFunctionProto::GetLine(SQInstruction *curr)
00220 {
00221   SQInteger op = (SQInteger)(curr-_instructions);
00222   SQInteger line=_lineinfos[0]._line;
00223   for(SQInteger i=1;i<_nlineinfos;i++){
00224     if(_lineinfos[i]._op>=op)
00225       return line;
00226     line=_lineinfos[i]._line;
00227   }
00228   return line;
00229 }
00230 
00231 #define _CHECK_IO(exp)  { if(!exp)return false; }
00232 bool SafeWrite(HSQUIRRELVM v,SQWRITEFUNC write,SQUserPointer up,SQUserPointer dest,SQInteger size)
00233 {
00234   if(write(up,dest,size) != size) {
00235     v->Raise_Error(_SC("io error (write function failure)"));
00236     return false;
00237   }
00238   return true;
00239 }
00240 
00241 bool SafeRead(HSQUIRRELVM v,SQWRITEFUNC read,SQUserPointer up,SQUserPointer dest,SQInteger size)
00242 {
00243   if(size && read(up,dest,size) != size) {
00244     v->Raise_Error(_SC("io error, read function failure, the origin stream could be corrupted/trucated"));
00245     return false;
00246   }
00247   return true;
00248 }
00249 
00250 bool WriteTag(HSQUIRRELVM v,SQWRITEFUNC write,SQUserPointer up,SQInteger tag)
00251 {
00252   return SafeWrite(v,write,up,&tag,sizeof(tag));
00253 }
00254 
00255 bool CheckTag(HSQUIRRELVM v,SQWRITEFUNC read,SQUserPointer up,SQInteger tag)
00256 {
00257   SQInteger t;
00258   _CHECK_IO(SafeRead(v,read,up,&t,sizeof(t)));
00259   if(t != tag){
00260     v->Raise_Error(_SC("invalid or corrupted closure stream"));
00261     return false;
00262   }
00263   return true;
00264 }
00265 
00266 bool WriteObject(HSQUIRRELVM v,SQUserPointer up,SQWRITEFUNC write,SQObjectPtr &o)
00267 {
00268   _CHECK_IO(SafeWrite(v,write,up,&type(o),sizeof(SQObjectType)));
00269   switch(type(o)){
00270   case OT_STRING:
00271     _CHECK_IO(SafeWrite(v,write,up,&_string(o)->_len,sizeof(SQInteger)));
00272     _CHECK_IO(SafeWrite(v,write,up,_stringval(o),rsl(_string(o)->_len)));
00273     break;
00274   case OT_INTEGER:
00275     _CHECK_IO(SafeWrite(v,write,up,&_integer(o),sizeof(SQInteger)));break;
00276   case OT_FLOAT:
00277     _CHECK_IO(SafeWrite(v,write,up,&_float(o),sizeof(SQFloat)));break;
00278   case OT_NULL:
00279     break;
00280   default:
00281     v->Raise_Error(_SC("cannot serialize a %s"),GetTypeName(o));
00282     return false;
00283   }
00284   return true;
00285 }
00286 
00287 bool ReadObject(HSQUIRRELVM v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &o)
00288 {
00289   SQObjectType t;
00290   _CHECK_IO(SafeRead(v,read,up,&t,sizeof(SQObjectType)));
00291   switch(t){
00292   case OT_STRING:{
00293     SQInteger len;
00294     _CHECK_IO(SafeRead(v,read,up,&len,sizeof(SQInteger)));
00295     _CHECK_IO(SafeRead(v,read,up,_ss(v)->GetScratchPad(rsl(len)),rsl(len)));
00296     o=SQString::Create(_ss(v),_ss(v)->GetScratchPad(-1),len);
00297            }
00298     break;
00299   case OT_INTEGER:{
00300     SQInteger i;
00301     _CHECK_IO(SafeRead(v,read,up,&i,sizeof(SQInteger))); o = i; break;
00302           }
00303   case OT_FLOAT:{
00304     SQFloat f;
00305     _CHECK_IO(SafeRead(v,read,up,&f,sizeof(SQFloat))); o = f; break;
00306           }
00307   case OT_NULL:
00308     o=_null_;
00309     break;
00310   default:
00311     v->Raise_Error(_SC("cannot serialize a %s"),IdType2Name(t));
00312     return false;
00313   }
00314   return true;
00315 }
00316 
00317 bool SQClosure::Save(SQVM *v,SQUserPointer up,SQWRITEFUNC write)
00318 {
00319   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_HEAD));
00320   _CHECK_IO(WriteTag(v,write,up,sizeof(SQChar)));
00321   _CHECK_IO(_funcproto(_function)->Save(v,up,write));
00322   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_TAIL));
00323   return true;
00324 }
00325 
00326 bool SQClosure::Load(SQVM *v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &ret)
00327 {
00328   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_HEAD));
00329   _CHECK_IO(CheckTag(v,read,up,sizeof(SQChar)));
00330   SQObjectPtr func;
00331   _CHECK_IO(SQFunctionProto::Load(v,up,read,func));
00332   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_TAIL));
00333   ret = SQClosure::Create(_ss(v),_funcproto(func));
00334   return true;
00335 }
00336 
00337 bool SQFunctionProto::Save(SQVM *v,SQUserPointer up,SQWRITEFUNC write)
00338 {
00339   SQInteger i,nliterals = _nliterals,nparameters = _nparameters;
00340   SQInteger noutervalues = _noutervalues,nlocalvarinfos = _nlocalvarinfos;
00341   SQInteger nlineinfos=_nlineinfos,ninstructions = _ninstructions,nfunctions=_nfunctions;
00342   SQInteger ndefaultparams = _ndefaultparams;
00343   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00344   _CHECK_IO(WriteObject(v,up,write,_sourcename));
00345   _CHECK_IO(WriteObject(v,up,write,_name));
00346   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00347   _CHECK_IO(SafeWrite(v,write,up,&nliterals,sizeof(nliterals)));
00348   _CHECK_IO(SafeWrite(v,write,up,&nparameters,sizeof(nparameters)));
00349   _CHECK_IO(SafeWrite(v,write,up,&noutervalues,sizeof(noutervalues)));
00350   _CHECK_IO(SafeWrite(v,write,up,&nlocalvarinfos,sizeof(nlocalvarinfos)));
00351   _CHECK_IO(SafeWrite(v,write,up,&nlineinfos,sizeof(nlineinfos)));
00352   _CHECK_IO(SafeWrite(v,write,up,&ndefaultparams,sizeof(ndefaultparams)));
00353   _CHECK_IO(SafeWrite(v,write,up,&ninstructions,sizeof(ninstructions)));
00354   _CHECK_IO(SafeWrite(v,write,up,&nfunctions,sizeof(nfunctions)));
00355   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00356   for(i=0;i<nliterals;i++){
00357     _CHECK_IO(WriteObject(v,up,write,_literals[i]));
00358   }
00359 
00360   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00361   for(i=0;i<nparameters;i++){
00362     _CHECK_IO(WriteObject(v,up,write,_parameters[i]));
00363   }
00364 
00365   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00366   for(i=0;i<noutervalues;i++){
00367     _CHECK_IO(SafeWrite(v,write,up,&_outervalues[i]._type,sizeof(SQUnsignedInteger)));
00368     _CHECK_IO(WriteObject(v,up,write,_outervalues[i]._src));
00369     _CHECK_IO(WriteObject(v,up,write,_outervalues[i]._name));
00370   }
00371 
00372   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00373   for(i=0;i<nlocalvarinfos;i++){
00374     SQLocalVarInfo &lvi=_localvarinfos[i];
00375     _CHECK_IO(WriteObject(v,up,write,lvi._name));
00376     _CHECK_IO(SafeWrite(v,write,up,&lvi._pos,sizeof(SQUnsignedInteger)));
00377     _CHECK_IO(SafeWrite(v,write,up,&lvi._start_op,sizeof(SQUnsignedInteger)));
00378     _CHECK_IO(SafeWrite(v,write,up,&lvi._end_op,sizeof(SQUnsignedInteger)));
00379   }
00380 
00381   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00382   _CHECK_IO(SafeWrite(v,write,up,_lineinfos,sizeof(SQLineInfo)*nlineinfos));
00383 
00384   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00385   _CHECK_IO(SafeWrite(v,write,up,_defaultparams,sizeof(SQInteger)*ndefaultparams));
00386 
00387   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00388   _CHECK_IO(SafeWrite(v,write,up,_instructions,sizeof(SQInstruction)*ninstructions));
00389 
00390   _CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));
00391   for(i=0;i<nfunctions;i++){
00392     _CHECK_IO(_funcproto(_functions[i])->Save(v,up,write));
00393   }
00394   _CHECK_IO(SafeWrite(v,write,up,&_stacksize,sizeof(_stacksize)));
00395   _CHECK_IO(SafeWrite(v,write,up,&_bgenerator,sizeof(_bgenerator)));
00396   _CHECK_IO(SafeWrite(v,write,up,&_varparams,sizeof(_varparams)));
00397   return true;
00398 }
00399 
00400 bool SQFunctionProto::Load(SQVM *v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &ret)
00401 {
00402   SQInteger i, nliterals,nparameters;
00403   SQInteger noutervalues ,nlocalvarinfos ;
00404   SQInteger nlineinfos,ninstructions ,nfunctions,ndefaultparams ;
00405   SQObjectPtr sourcename, name;
00406   SQObjectPtr o;
00407   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00408   _CHECK_IO(ReadObject(v, up, read, sourcename));
00409   _CHECK_IO(ReadObject(v, up, read, name));
00410 
00411   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00412   _CHECK_IO(SafeRead(v,read,up, &nliterals, sizeof(nliterals)));
00413   _CHECK_IO(SafeRead(v,read,up, &nparameters, sizeof(nparameters)));
00414   _CHECK_IO(SafeRead(v,read,up, &noutervalues, sizeof(noutervalues)));
00415   _CHECK_IO(SafeRead(v,read,up, &nlocalvarinfos, sizeof(nlocalvarinfos)));
00416   _CHECK_IO(SafeRead(v,read,up, &nlineinfos, sizeof(nlineinfos)));
00417   _CHECK_IO(SafeRead(v,read,up, &ndefaultparams, sizeof(ndefaultparams)));
00418   _CHECK_IO(SafeRead(v,read,up, &ninstructions, sizeof(ninstructions)));
00419   _CHECK_IO(SafeRead(v,read,up, &nfunctions, sizeof(nfunctions)));
00420 
00421 
00422   SQFunctionProto *f = SQFunctionProto::Create(ninstructions,nliterals,nparameters,
00423       nfunctions,noutervalues,nlineinfos,nlocalvarinfos,ndefaultparams);
00424   SQObjectPtr proto = f; //gets a ref in case of failure
00425   f->_sourcename = sourcename;
00426   f->_name = name;
00427 
00428   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00429 
00430   for(i = 0;i < nliterals; i++){
00431     _CHECK_IO(ReadObject(v, up, read, o));
00432     f->_literals[i] = o;
00433   }
00434   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00435 
00436   for(i = 0; i < nparameters; i++){
00437     _CHECK_IO(ReadObject(v, up, read, o));
00438     f->_parameters[i] = o;
00439   }
00440   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00441 
00442   for(i = 0; i < noutervalues; i++){
00443     SQUnsignedInteger type;
00444     SQObjectPtr name;
00445     _CHECK_IO(SafeRead(v,read,up, &type, sizeof(SQUnsignedInteger)));
00446     _CHECK_IO(ReadObject(v, up, read, o));
00447     _CHECK_IO(ReadObject(v, up, read, name));
00448     f->_outervalues[i] = SQOuterVar(name,o, (SQOuterType)type);
00449   }
00450   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00451 
00452   for(i = 0; i < nlocalvarinfos; i++){
00453     SQLocalVarInfo lvi;
00454     _CHECK_IO(ReadObject(v, up, read, lvi._name));
00455     _CHECK_IO(SafeRead(v,read,up, &lvi._pos, sizeof(SQUnsignedInteger)));
00456     _CHECK_IO(SafeRead(v,read,up, &lvi._start_op, sizeof(SQUnsignedInteger)));
00457     _CHECK_IO(SafeRead(v,read,up, &lvi._end_op, sizeof(SQUnsignedInteger)));
00458     f->_localvarinfos[i] = lvi;
00459   }
00460   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00461   _CHECK_IO(SafeRead(v,read,up, f->_lineinfos, sizeof(SQLineInfo)*nlineinfos));
00462 
00463   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00464   _CHECK_IO(SafeRead(v,read,up, f->_defaultparams, sizeof(SQInteger)*ndefaultparams));
00465 
00466   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00467   _CHECK_IO(SafeRead(v,read,up, f->_instructions, sizeof(SQInstruction)*ninstructions));
00468 
00469   _CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));
00470   for(i = 0; i < nfunctions; i++){
00471     _CHECK_IO(_funcproto(o)->Load(v, up, read, o));
00472     f->_functions[i] = o;
00473   }
00474   _CHECK_IO(SafeRead(v,read,up, &f->_stacksize, sizeof(f->_stacksize)));
00475   _CHECK_IO(SafeRead(v,read,up, &f->_bgenerator, sizeof(f->_bgenerator)));
00476   _CHECK_IO(SafeRead(v,read,up, &f->_varparams, sizeof(f->_varparams)));
00477 
00478   ret = f;
00479   return true;
00480 }
00481 
00482 #ifndef NO_GARBAGE_COLLECTOR
00483 
00484 #define START_MARK()  if(!(_uiRef&MARK_FLAG)){ \
00485     _uiRef|=MARK_FLAG;
00486 
00487 #define END_MARK() RemoveFromChain(&_sharedstate->_gc_chain, this); \
00488     AddToChain(chain, this); }
00489 
00490 void SQVM::Mark(SQCollectable **chain)
00491 {
00492   START_MARK()
00493     SQSharedState::MarkObject(_lasterror,chain);
00494     SQSharedState::MarkObject(_errorhandler,chain);
00495     SQSharedState::MarkObject(_debughook,chain);
00496     SQSharedState::MarkObject(_roottable, chain);
00497     SQSharedState::MarkObject(temp_reg, chain);
00498     for(SQUnsignedInteger i = 0; i < _stack.size(); i++) SQSharedState::MarkObject(_stack[i], chain);
00499     for(SQUnsignedInteger j = 0; j < _vargsstack.size(); j++) SQSharedState::MarkObject(_vargsstack[j], chain);
00500     for(SQInteger k = 0; k < _callsstacksize; k++) SQSharedState::MarkObject(_callsstack[k]._closure, chain);
00501   END_MARK()
00502 }
00503 
00504 void SQArray::Mark(SQCollectable **chain)
00505 {
00506   START_MARK()
00507     SQInteger len = _values.size();
00508     for(SQInteger i = 0;i < len; i++) SQSharedState::MarkObject(_values[i], chain);
00509   END_MARK()
00510 }
00511 void SQTable::Mark(SQCollectable **chain)
00512 {
00513   START_MARK()
00514     if(_delegate) _delegate->Mark(chain);
00515     SQInteger len = _numofnodes;
00516     for(SQInteger i = 0; i < len; i++){
00517       SQSharedState::MarkObject(_nodes[i].key, chain);
00518       SQSharedState::MarkObject(_nodes[i].val, chain);
00519     }
00520   END_MARK()
00521 }
00522 
00523 void SQClass::Mark(SQCollectable **chain)
00524 {
00525   START_MARK()
00526     _members->Mark(chain);
00527     if(_base) _base->Mark(chain);
00528     SQSharedState::MarkObject(_attributes, chain);
00529     for(SQUnsignedInteger i =0; i< _defaultvalues.size(); i++) {
00530       SQSharedState::MarkObject(_defaultvalues[i].val, chain);
00531       SQSharedState::MarkObject(_defaultvalues[i].attrs, chain);
00532     }
00533     for(SQUnsignedInteger j =0; j< _methods.size(); j++) {
00534       SQSharedState::MarkObject(_methods[j].val, chain);
00535       SQSharedState::MarkObject(_methods[j].attrs, chain);
00536     }
00537     for(SQUnsignedInteger k =0; k< _metamethods.size(); k++) {
00538       SQSharedState::MarkObject(_metamethods[k], chain);
00539     }
00540   END_MARK()
00541 }
00542 
00543 void SQInstance::Mark(SQCollectable **chain)
00544 {
00545   START_MARK()
00546     _class->Mark(chain);
00547     SQUnsignedInteger nvalues = _class->_defaultvalues.size();
00548     for(SQUnsignedInteger i =0; i< nvalues; i++) {
00549       SQSharedState::MarkObject(_values[i], chain);
00550     }
00551   END_MARK()
00552 }
00553 
00554 void SQGenerator::Mark(SQCollectable **chain)
00555 {
00556   START_MARK()
00557     for(SQUnsignedInteger i = 0; i < _stack.size(); i++) SQSharedState::MarkObject(_stack[i], chain);
00558     for(SQUnsignedInteger j = 0; j < _vargsstack.size(); j++) SQSharedState::MarkObject(_vargsstack[j], chain);
00559     SQSharedState::MarkObject(_closure, chain);
00560   END_MARK()
00561 }
00562 
00563 void SQClosure::Mark(SQCollectable **chain)
00564 {
00565   START_MARK()
00566     for(SQUnsignedInteger i = 0; i < _outervalues.size(); i++) SQSharedState::MarkObject(_outervalues[i], chain);
00567     for(SQUnsignedInteger i = 0; i < _defaultparams.size(); i++) SQSharedState::MarkObject(_defaultparams[i], chain);
00568   END_MARK()
00569 }
00570 
00571 void SQNativeClosure::Mark(SQCollectable **chain)
00572 {
00573   START_MARK()
00574     for(SQUnsignedInteger i = 0; i < _outervalues.size(); i++) SQSharedState::MarkObject(_outervalues[i], chain);
00575   END_MARK()
00576 }
00577 
00578 void SQUserData::Mark(SQCollectable **chain){
00579   START_MARK()
00580     if(_delegate) _delegate->Mark(chain);
00581   END_MARK()
00582 }
00583 
00584 void SQCollectable::UnMark() { _uiRef&=~MARK_FLAG; }
00585 
00586 #endif
00587 

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