1 files changed, 655 insertions, 0 deletions

diff --git a/squirrel_3_0_1_stable/squirrel/sqobject.cpp b/squirrel_3_0_1_stable/squirrel/sqobject.cpp
new file mode 100644
index 000000000..418a6d656
--- /dev/null
+++ b/squirrel_3_0_1_stable/squirrel/sqobject.cpp
@@ -0,0 +1,655 @@
+/*

+	see copyright notice in squirrel.h

+*/

+#include "sqpcheader.h"

+#include "sqvm.h"

+#include "sqstring.h"

+#include "sqarray.h"

+#include "sqtable.h"

+#include "squserdata.h"

+#include "sqfuncproto.h"

+#include "sqclass.h"

+#include "sqclosure.h"

+

+

+const SQChar *IdType2Name(SQObjectType type)

+{

+	switch(_RAW_TYPE(type))

+	{

+	case _RT_NULL:return _SC("null");

+	case _RT_INTEGER:return _SC("integer");

+	case _RT_FLOAT:return _SC("float");

+	case _RT_BOOL:return _SC("bool");

+	case _RT_STRING:return _SC("string");

+	case _RT_TABLE:return _SC("table");

+	case _RT_ARRAY:return _SC("array");

+	case _RT_GENERATOR:return _SC("generator");

+	case _RT_CLOSURE:

+	case _RT_NATIVECLOSURE:

+		return _SC("function");

+	case _RT_USERDATA:

+	case _RT_USERPOINTER:

+		return _SC("userdata");

+	case _RT_THREAD: return _SC("thread");

+	case _RT_FUNCPROTO: return _SC("function");

+	case _RT_CLASS: return _SC("class");

+	case _RT_INSTANCE: return _SC("instance");

+	case _RT_WEAKREF: return _SC("weakref");

+	case _RT_OUTER: return _SC("outer");

+	default:

+		return NULL;

+	}

+}

+

+const SQChar *GetTypeName(const SQObjectPtr &obj1)

+{

+	return IdType2Name(type(obj1));	

+}

+

+SQString *SQString::Create(SQSharedState *ss,const SQChar *s,SQInteger len)

+{

+	SQString *str=ADD_STRING(ss,s,len);

+	return str;

+}

+

+void SQString::Release()

+{

+	REMOVE_STRING(_sharedstate,this);

+}

+

+SQInteger SQString::Next(const SQObjectPtr &refpos, SQObjectPtr &outkey, SQObjectPtr &outval)

+{

+	SQInteger idx = (SQInteger)TranslateIndex(refpos);

+	while(idx < _len){

+		outkey = (SQInteger)idx;

+		outval = SQInteger(_val[idx]);

+		//return idx for the next iteration

+		return ++idx;

+	}

+	//nothing to iterate anymore

+	return -1;

+}

+

+SQUnsignedInteger TranslateIndex(const SQObjectPtr &idx)

+{

+	switch(type(idx)){

+		case OT_NULL:

+			return 0;

+		case OT_INTEGER:

+			return (SQUnsignedInteger)_integer(idx);

+		default: assert(0); break;

+	}

+	return 0;

+}

+

+SQWeakRef *SQRefCounted::GetWeakRef(SQObjectType type)

+{

+	if(!_weakref) {

+		sq_new(_weakref,SQWeakRef);

+		_weakref->_obj._type = type;

+		_weakref->_obj._unVal.pRefCounted = this;

+	}

+	return _weakref;

+}

+

+SQRefCounted::~SQRefCounted()

+{

+	if(_weakref) {

+		_weakref->_obj._type = OT_NULL;

+		_weakref->_obj._unVal.pRefCounted = NULL;

+	}

+}

+

+void SQWeakRef::Release() { 

+	if(ISREFCOUNTED(_obj._type)) { 

+		_obj._unVal.pRefCounted->_weakref = NULL;

+	} 

+	sq_delete(this,SQWeakRef);

+}

+

+bool SQDelegable::GetMetaMethod(SQVM *v,SQMetaMethod mm,SQObjectPtr &res) {

+	if(_delegate) {

+		return _delegate->Get((*_ss(v)->_metamethods)[mm],res);

+	}

+	return false;

+}

+

+bool SQDelegable::SetDelegate(SQTable *mt)

+{

+	SQTable *temp = mt;

+	if(temp == this) return false;

+	while (temp) {

+		if (temp->_delegate == this) return false; //cycle detected

+		temp = temp->_delegate;

+	}

+	if (mt)	__ObjAddRef(mt);

+	__ObjRelease(_delegate);

+	_delegate = mt;

+	return true;

+}

+

+bool SQGenerator::Yield(SQVM *v,SQInteger target)

+{

+	if(_state==eSuspended) { v->Raise_Error(_SC("internal vm error, yielding dead generator"));  return false;}

+	if(_state==eDead) { v->Raise_Error(_SC("internal vm error, yielding a dead generator")); return false; }

+	SQInteger size = v->_top-v->_stackbase;

+	

+	_stack.resize(size);

+	SQObject _this = v->_stack[v->_stackbase];

+	_stack._vals[0] = ISREFCOUNTED(type(_this)) ? SQObjectPtr(_refcounted(_this)->GetWeakRef(type(_this))) : _this;

+	for(SQInteger n =1; n<target; n++) {

+		_stack._vals[n] = v->_stack[v->_stackbase+n];

+	}

+	for(SQInteger j =0; j < size; j++)

+	{

+		v->_stack[v->_stackbase+j].Null();

+	}

+

+	_ci = *v->ci;

+	_ci._generator=NULL;

+	for(SQInteger i=0;i<_ci._etraps;i++) {

+		_etraps.push_back(v->_etraps.top());

+		v->_etraps.pop_back();

+	}

+	_state=eSuspended;

+	return true;

+}

+

+bool SQGenerator::Resume(SQVM *v,SQObjectPtr &dest)

+{

+	if(_state==eDead){ v->Raise_Error(_SC("resuming dead generator")); return false; }

+	if(_state==eRunning){ v->Raise_Error(_SC("resuming active generator")); return false; }

+	SQInteger size = _stack.size();

+	SQInteger target = &dest - &(v->_stack._vals[v->_stackbase]);

+	assert(target>=0 && target<=255);

+	if(!v->EnterFrame(v->_top, v->_top + size, false)) 

+		return false;

+	v->ci->_generator   = this;

+	v->ci->_target      = (SQInt32)target;

+	v->ci->_closure     = _ci._closure;

+	v->ci->_ip          = _ci._ip;

+	v->ci->_literals    = _ci._literals;

+	v->ci->_ncalls      = _ci._ncalls;

+	v->ci->_etraps      = _ci._etraps;

+	v->ci->_root        = _ci._root;

+

+

+	for(SQInteger i=0;i<_ci._etraps;i++) {

+		v->_etraps.push_back(_etraps.top());

+		_etraps.pop_back();

+	}

+	SQObject _this = _stack._vals[0];

+	v->_stack[v->_stackbase] = type(_this) == OT_WEAKREF ? _weakref(_this)->_obj : _this;

+

+	for(SQInteger n = 1; n<size; n++) {

+		v->_stack[v->_stackbase+n] = _stack._vals[n];

+		_stack._vals[n].Null();

+	}

+

+	_state=eRunning;

+	if (v->_debughook)

+		v->CallDebugHook(_SC('c'));

+

+	return true;

+}

+

+void SQArray::Extend(const SQArray *a){

+	SQInteger xlen;

+	if((xlen=a->Size()))

+		for(SQInteger i=0;i<xlen;i++)

+			Append(a->_values[i]);

+}

+

+const SQChar* SQFunctionProto::GetLocal(SQVM *vm,SQUnsignedInteger stackbase,SQUnsignedInteger nseq,SQUnsignedInteger nop)

+{

+	SQUnsignedInteger nvars=_nlocalvarinfos;

+	const SQChar *res=NULL; 

+	if(nvars>=nseq){

+ 		for(SQUnsignedInteger i=0;i<nvars;i++){

+			if(_localvarinfos[i]._start_op<=nop && _localvarinfos[i]._end_op>=nop)

+			{

+				if(nseq==0){

+					vm->Push(vm->_stack[stackbase+_localvarinfos[i]._pos]);

+					res=_stringval(_localvarinfos[i]._name);

+					break;

+				}

+				nseq--;

+			}

+		}

+	}

+	return res;

+}

+

+

+SQInteger SQFunctionProto::GetLine(SQInstruction *curr)

+{

+	SQInteger op = (SQInteger)(curr-_instructions);

+	SQInteger line=_lineinfos[0]._line;

+	SQInteger low = 0;

+	SQInteger high = _nlineinfos - 1;

+	SQInteger mid = 0;

+	while(low <= high)

+	{

+		mid = low + ((high - low) >> 1);

+		SQInteger curop = _lineinfos[mid]._op;

+		if(curop > op)

+		{

+			high = mid - 1;

+		}

+		else if(curop < op) {

+			if(mid < (_nlineinfos - 1) 

+				&& _lineinfos[mid + 1]._op >= op) {

+				break;

+			}

+			low = mid + 1;

+		}

+		else { //equal

+			break;

+		}

+	}

+

+	line = _lineinfos[mid]._line;

+	return line;

+}

+

+SQClosure::~SQClosure()

+{

+	__ObjRelease(_env);

+	__ObjRelease(_base);

+	REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain,this);

+}

+

+#define _CHECK_IO(exp)  { if(!exp)return false; }

+bool SafeWrite(HSQUIRRELVM v,SQWRITEFUNC write,SQUserPointer up,SQUserPointer dest,SQInteger size)

+{

+	if(write(up,dest,size) != size) {

+		v->Raise_Error(_SC("io error (write function failure)"));

+		return false;

+	}

+	return true;

+}

+

+bool SafeRead(HSQUIRRELVM v,SQWRITEFUNC read,SQUserPointer up,SQUserPointer dest,SQInteger size)

+{

+	if(size && read(up,dest,size) != size) {

+		v->Raise_Error(_SC("io error, read function failure, the origin stream could be corrupted/trucated"));

+		return false;

+	}

+	return true;

+}

+

+bool WriteTag(HSQUIRRELVM v,SQWRITEFUNC write,SQUserPointer up,SQUnsignedInteger32 tag)

+{

+	return SafeWrite(v,write,up,&tag,sizeof(tag));

+}

+

+bool CheckTag(HSQUIRRELVM v,SQWRITEFUNC read,SQUserPointer up,SQUnsignedInteger32 tag)

+{

+	SQUnsignedInteger32 t;

+	_CHECK_IO(SafeRead(v,read,up,&t,sizeof(t)));

+	if(t != tag){

+		v->Raise_Error(_SC("invalid or corrupted closure stream"));

+		return false;

+	}

+	return true;

+}

+

+bool WriteObject(HSQUIRRELVM v,SQUserPointer up,SQWRITEFUNC write,SQObjectPtr &o)

+{

+	SQUnsignedInteger32 _type = (SQUnsignedInteger32)type(o);

+	_CHECK_IO(SafeWrite(v,write,up,&_type,sizeof(_type)));

+	switch(type(o)){

+	case OT_STRING:

+		_CHECK_IO(SafeWrite(v,write,up,&_string(o)->_len,sizeof(SQInteger)));

+		_CHECK_IO(SafeWrite(v,write,up,_stringval(o),rsl(_string(o)->_len)));

+		break;

+	case OT_INTEGER:

+		_CHECK_IO(SafeWrite(v,write,up,&_integer(o),sizeof(SQInteger)));break;

+	case OT_FLOAT:

+		_CHECK_IO(SafeWrite(v,write,up,&_float(o),sizeof(SQFloat)));break;

+	case OT_NULL:

+		break;

+	default:

+		v->Raise_Error(_SC("cannot serialize a %s"),GetTypeName(o));

+		return false;

+	}

+	return true;

+}

+

+bool ReadObject(HSQUIRRELVM v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &o)

+{

+	SQUnsignedInteger32 _type;

+	_CHECK_IO(SafeRead(v,read,up,&_type,sizeof(_type)));

+	SQObjectType t = (SQObjectType)_type;

+	switch(t){

+	case OT_STRING:{

+		SQInteger len;

+		_CHECK_IO(SafeRead(v,read,up,&len,sizeof(SQInteger)));

+		_CHECK_IO(SafeRead(v,read,up,_ss(v)->GetScratchPad(rsl(len)),rsl(len)));

+		o=SQString::Create(_ss(v),_ss(v)->GetScratchPad(-1),len);

+				   }

+		break;

+	case OT_INTEGER:{

+		SQInteger i;

+		_CHECK_IO(SafeRead(v,read,up,&i,sizeof(SQInteger))); o = i; break;

+					}

+	case OT_FLOAT:{

+		SQFloat f;

+		_CHECK_IO(SafeRead(v,read,up,&f,sizeof(SQFloat))); o = f; break;

+				  }

+	case OT_NULL:

+		o.Null();

+		break;

+	default:

+		v->Raise_Error(_SC("cannot serialize a %s"),IdType2Name(t));

+		return false;

+	}

+	return true;

+}

+

+bool SQClosure::Save(SQVM *v,SQUserPointer up,SQWRITEFUNC write)

+{

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_HEAD));

+	_CHECK_IO(WriteTag(v,write,up,sizeof(SQChar)));

+	_CHECK_IO(WriteTag(v,write,up,sizeof(SQInteger)));

+	_CHECK_IO(WriteTag(v,write,up,sizeof(SQFloat)));

+	_CHECK_IO(_function->Save(v,up,write));

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_TAIL));

+	return true;

+}

+

+bool SQClosure::Load(SQVM *v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &ret)

+{

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_HEAD));

+	_CHECK_IO(CheckTag(v,read,up,sizeof(SQChar)));

+	_CHECK_IO(CheckTag(v,read,up,sizeof(SQInteger)));

+	_CHECK_IO(CheckTag(v,read,up,sizeof(SQFloat)));

+	SQObjectPtr func;

+	_CHECK_IO(SQFunctionProto::Load(v,up,read,func));

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_TAIL));

+	ret = SQClosure::Create(_ss(v),_funcproto(func));

+	return true;

+}

+

+SQFunctionProto::SQFunctionProto(SQSharedState *ss)

+{

+	_stacksize=0;

+	_bgenerator=false;

+	INIT_CHAIN();ADD_TO_CHAIN(&_ss(this)->_gc_chain,this);

+}

+

+SQFunctionProto::~SQFunctionProto()

+{

+	REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain,this);

+}

+

+bool SQFunctionProto::Save(SQVM *v,SQUserPointer up,SQWRITEFUNC write)

+{

+	SQInteger i,nliterals = _nliterals,nparameters = _nparameters;

+	SQInteger noutervalues = _noutervalues,nlocalvarinfos = _nlocalvarinfos;

+	SQInteger nlineinfos=_nlineinfos,ninstructions = _ninstructions,nfunctions=_nfunctions;

+	SQInteger ndefaultparams = _ndefaultparams;

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(WriteObject(v,up,write,_sourcename));

+	_CHECK_IO(WriteObject(v,up,write,_name));

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeWrite(v,write,up,&nliterals,sizeof(nliterals)));

+	_CHECK_IO(SafeWrite(v,write,up,&nparameters,sizeof(nparameters)));

+	_CHECK_IO(SafeWrite(v,write,up,&noutervalues,sizeof(noutervalues)));

+	_CHECK_IO(SafeWrite(v,write,up,&nlocalvarinfos,sizeof(nlocalvarinfos)));

+	_CHECK_IO(SafeWrite(v,write,up,&nlineinfos,sizeof(nlineinfos)));

+	_CHECK_IO(SafeWrite(v,write,up,&ndefaultparams,sizeof(ndefaultparams)));

+	_CHECK_IO(SafeWrite(v,write,up,&ninstructions,sizeof(ninstructions)));

+	_CHECK_IO(SafeWrite(v,write,up,&nfunctions,sizeof(nfunctions)));

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	for(i=0;i<nliterals;i++){

+		_CHECK_IO(WriteObject(v,up,write,_literals[i]));

+	}

+

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	for(i=0;i<nparameters;i++){

+		_CHECK_IO(WriteObject(v,up,write,_parameters[i]));

+	}

+

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	for(i=0;i<noutervalues;i++){

+		_CHECK_IO(SafeWrite(v,write,up,&_outervalues[i]._type,sizeof(SQUnsignedInteger)));

+		_CHECK_IO(WriteObject(v,up,write,_outervalues[i]._src));

+		_CHECK_IO(WriteObject(v,up,write,_outervalues[i]._name));

+	}

+

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	for(i=0;i<nlocalvarinfos;i++){

+		SQLocalVarInfo &lvi=_localvarinfos[i];

+		_CHECK_IO(WriteObject(v,up,write,lvi._name));

+		_CHECK_IO(SafeWrite(v,write,up,&lvi._pos,sizeof(SQUnsignedInteger)));

+		_CHECK_IO(SafeWrite(v,write,up,&lvi._start_op,sizeof(SQUnsignedInteger)));

+		_CHECK_IO(SafeWrite(v,write,up,&lvi._end_op,sizeof(SQUnsignedInteger)));

+	}

+

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeWrite(v,write,up,_lineinfos,sizeof(SQLineInfo)*nlineinfos));

+

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeWrite(v,write,up,_defaultparams,sizeof(SQInteger)*ndefaultparams));

+

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeWrite(v,write,up,_instructions,sizeof(SQInstruction)*ninstructions));

+

+	_CHECK_IO(WriteTag(v,write,up,SQ_CLOSURESTREAM_PART));

+	for(i=0;i<nfunctions;i++){

+		_CHECK_IO(_funcproto(_functions[i])->Save(v,up,write));

+	}

+	_CHECK_IO(SafeWrite(v,write,up,&_stacksize,sizeof(_stacksize)));

+	_CHECK_IO(SafeWrite(v,write,up,&_bgenerator,sizeof(_bgenerator)));

+	_CHECK_IO(SafeWrite(v,write,up,&_varparams,sizeof(_varparams)));

+	return true;

+}

+

+bool SQFunctionProto::Load(SQVM *v,SQUserPointer up,SQREADFUNC read,SQObjectPtr &ret)

+{

+	SQInteger i, nliterals,nparameters;

+	SQInteger noutervalues ,nlocalvarinfos ;

+	SQInteger nlineinfos,ninstructions ,nfunctions,ndefaultparams ;

+	SQObjectPtr sourcename, name;

+	SQObjectPtr o;

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(ReadObject(v, up, read, sourcename));

+	_CHECK_IO(ReadObject(v, up, read, name));

+	

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeRead(v,read,up, &nliterals, sizeof(nliterals)));

+	_CHECK_IO(SafeRead(v,read,up, &nparameters, sizeof(nparameters)));

+	_CHECK_IO(SafeRead(v,read,up, &noutervalues, sizeof(noutervalues)));

+	_CHECK_IO(SafeRead(v,read,up, &nlocalvarinfos, sizeof(nlocalvarinfos)));

+	_CHECK_IO(SafeRead(v,read,up, &nlineinfos, sizeof(nlineinfos)));

+	_CHECK_IO(SafeRead(v,read,up, &ndefaultparams, sizeof(ndefaultparams)));

+	_CHECK_IO(SafeRead(v,read,up, &ninstructions, sizeof(ninstructions)));

+	_CHECK_IO(SafeRead(v,read,up, &nfunctions, sizeof(nfunctions)));

+	

+

+	SQFunctionProto *f = SQFunctionProto::Create(_opt_ss(v),ninstructions,nliterals,nparameters,

+			nfunctions,noutervalues,nlineinfos,nlocalvarinfos,ndefaultparams);

+	SQObjectPtr proto = f; //gets a ref in case of failure

+	f->_sourcename = sourcename;

+	f->_name = name;

+

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+

+	for(i = 0;i < nliterals; i++){

+		_CHECK_IO(ReadObject(v, up, read, o));

+		f->_literals[i] = o;

+	}

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+

+	for(i = 0; i < nparameters; i++){

+		_CHECK_IO(ReadObject(v, up, read, o));

+		f->_parameters[i] = o;

+	}

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+

+	for(i = 0; i < noutervalues; i++){

+		SQUnsignedInteger type;

+		SQObjectPtr name;

+		_CHECK_IO(SafeRead(v,read,up, &type, sizeof(SQUnsignedInteger)));

+		_CHECK_IO(ReadObject(v, up, read, o));

+		_CHECK_IO(ReadObject(v, up, read, name));

+		f->_outervalues[i] = SQOuterVar(name,o, (SQOuterType)type);

+	}

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+

+	for(i = 0; i < nlocalvarinfos; i++){

+		SQLocalVarInfo lvi;

+		_CHECK_IO(ReadObject(v, up, read, lvi._name));

+		_CHECK_IO(SafeRead(v,read,up, &lvi._pos, sizeof(SQUnsignedInteger)));

+		_CHECK_IO(SafeRead(v,read,up, &lvi._start_op, sizeof(SQUnsignedInteger)));

+		_CHECK_IO(SafeRead(v,read,up, &lvi._end_op, sizeof(SQUnsignedInteger)));

+		f->_localvarinfos[i] = lvi;

+	}

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeRead(v,read,up, f->_lineinfos, sizeof(SQLineInfo)*nlineinfos));

+

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeRead(v,read,up, f->_defaultparams, sizeof(SQInteger)*ndefaultparams));

+

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+	_CHECK_IO(SafeRead(v,read,up, f->_instructions, sizeof(SQInstruction)*ninstructions));

+

+	_CHECK_IO(CheckTag(v,read,up,SQ_CLOSURESTREAM_PART));

+	for(i = 0; i < nfunctions; i++){

+		_CHECK_IO(_funcproto(o)->Load(v, up, read, o));

+		f->_functions[i] = o;

+	}

+	_CHECK_IO(SafeRead(v,read,up, &f->_stacksize, sizeof(f->_stacksize)));

+	_CHECK_IO(SafeRead(v,read,up, &f->_bgenerator, sizeof(f->_bgenerator)));

+	_CHECK_IO(SafeRead(v,read,up, &f->_varparams, sizeof(f->_varparams)));

+	

+	ret = f;

+	return true;

+}

+

+#ifndef NO_GARBAGE_COLLECTOR

+

+#define START_MARK() 	if(!(_uiRef&MARK_FLAG)){ \

+		_uiRef|=MARK_FLAG;

+

+#define END_MARK() RemoveFromChain(&_sharedstate->_gc_chain, this); \

+		AddToChain(chain, this); }

+

+void SQVM::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		SQSharedState::MarkObject(_lasterror,chain);

+		SQSharedState::MarkObject(_errorhandler,chain);

+		SQSharedState::MarkObject(_debughook_closure,chain);

+		SQSharedState::MarkObject(_roottable, chain);

+		SQSharedState::MarkObject(temp_reg, chain);

+		for(SQUnsignedInteger i = 0; i < _stack.size(); i++) SQSharedState::MarkObject(_stack[i], chain);

+		for(SQInteger k = 0; k < _callsstacksize; k++) SQSharedState::MarkObject(_callsstack[k]._closure, chain);

+	END_MARK()

+}

+

+void SQArray::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		SQInteger len = _values.size();

+		for(SQInteger i = 0;i < len; i++) SQSharedState::MarkObject(_values[i], chain);

+	END_MARK()

+}

+void SQTable::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		if(_delegate) _delegate->Mark(chain);

+		SQInteger len = _numofnodes;

+		for(SQInteger i = 0; i < len; i++){

+			SQSharedState::MarkObject(_nodes[i].key, chain);

+			SQSharedState::MarkObject(_nodes[i].val, chain);

+		}

+	END_MARK()

+}

+

+void SQClass::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		_members->Mark(chain);

+		if(_base) _base->Mark(chain);

+		SQSharedState::MarkObject(_attributes, chain);

+		for(SQUnsignedInteger i =0; i< _defaultvalues.size(); i++) {

+			SQSharedState::MarkObject(_defaultvalues[i].val, chain);

+			SQSharedState::MarkObject(_defaultvalues[i].attrs, chain);

+		}

+		for(SQUnsignedInteger j =0; j< _methods.size(); j++) {

+			SQSharedState::MarkObject(_methods[j].val, chain);

+			SQSharedState::MarkObject(_methods[j].attrs, chain);

+		}

+		for(SQUnsignedInteger k =0; k< MT_LAST; k++) {

+			SQSharedState::MarkObject(_metamethods[k], chain);

+		}

+	END_MARK()

+}

+

+void SQInstance::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		_class->Mark(chain);

+		SQUnsignedInteger nvalues = _class->_defaultvalues.size();

+		for(SQUnsignedInteger i =0; i< nvalues; i++) {

+			SQSharedState::MarkObject(_values[i], chain);

+		}

+	END_MARK()

+}

+

+void SQGenerator::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		for(SQUnsignedInteger i = 0; i < _stack.size(); i++) SQSharedState::MarkObject(_stack[i], chain);

+		SQSharedState::MarkObject(_closure, chain);

+	END_MARK()

+}

+

+void SQFunctionProto::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		for(SQInteger i = 0; i < _nliterals; i++) SQSharedState::MarkObject(_literals[i], chain);

+		for(SQInteger k = 0; k < _nfunctions; k++) SQSharedState::MarkObject(_functions[k], chain);

+	END_MARK()

+}

+

+void SQClosure::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		if(_base) _base->Mark(chain);

+		SQFunctionProto *fp = _function;

+		fp->Mark(chain);

+		for(SQInteger i = 0; i < fp->_noutervalues; i++) SQSharedState::MarkObject(_outervalues[i], chain);

+		for(SQInteger k = 0; k < fp->_ndefaultparams; k++) SQSharedState::MarkObject(_defaultparams[k], chain);

+	END_MARK()

+}

+

+void SQNativeClosure::Mark(SQCollectable **chain)

+{

+	START_MARK()

+		for(SQUnsignedInteger i = 0; i < _noutervalues; i++) SQSharedState::MarkObject(_outervalues[i], chain);

+	END_MARK()

+}

+

+void SQOuter::Mark(SQCollectable **chain)

+{

+	START_MARK()

+    /* If the valptr points to a closed value, that value is alive */

+    if(_valptr == &_value) {

+      SQSharedState::MarkObject(_value, chain);

+    }

+	END_MARK()

+}

+

+void SQUserData::Mark(SQCollectable **chain){

+	START_MARK()

+		if(_delegate) _delegate->Mark(chain);

+	END_MARK()

+}

+

+void SQCollectable::UnMark() { _uiRef&=~MARK_FLAG; }

+

+#endif

+