cuberite-2a/squirrel_3_0_1_stable/squirrel/sqbaselib.cpp

/*
	see copyright notice in squirrel.h
*/
#include "sqpcheader.h"
#include "sqvm.h"
#include "sqstring.h"
#include "sqtable.h"
#include "sqarray.h"
#include "sqfuncproto.h"
#include "sqclosure.h"
#include "sqclass.h"
#include <stdlib.h>
#include <stdarg.h>
#include <ctype.h>

bool str2num(const SQChar *s,SQObjectPtr &res)
{
	SQChar *end;
	if(scstrstr(s,_SC("."))){
		SQFloat r = SQFloat(scstrtod(s,&end));
		if(s == end) return false;
		res = r;
		return true;
	}
	else{
		SQInteger r = SQInteger(scstrtol(s,&end,10));
		if(s == end) return false;
		res = r;
		return true;
	}
}

static SQInteger base_dummy(HSQUIRRELVM v)
{
	return 0;
}

#ifndef NO_GARBAGE_COLLECTOR
static SQInteger base_collectgarbage(HSQUIRRELVM v)
{
	sq_pushinteger(v, sq_collectgarbage(v));
	return 1;
}
static SQInteger base_resurectureachable(HSQUIRRELVM v)
{
	sq_resurrectunreachable(v);
	return 1;
}
#endif

static SQInteger base_getroottable(HSQUIRRELVM v)
{
	v->Push(v->_roottable);
	return 1;
}

static SQInteger base_getconsttable(HSQUIRRELVM v)
{
	v->Push(_ss(v)->_consts);
	return 1;
}


static SQInteger base_setroottable(HSQUIRRELVM v)
{
	SQObjectPtr o = v->_roottable;
	if(SQ_FAILED(sq_setroottable(v))) return SQ_ERROR;
	v->Push(o);
	return 1;
}

static SQInteger base_setconsttable(HSQUIRRELVM v)
{
	SQObjectPtr o = _ss(v)->_consts;
	if(SQ_FAILED(sq_setconsttable(v))) return SQ_ERROR;
	v->Push(o);
	return 1;
}

static SQInteger base_seterrorhandler(HSQUIRRELVM v)
{
	sq_seterrorhandler(v);
	return 0;
}

static SQInteger base_setdebughook(HSQUIRRELVM v)
{
	sq_setdebughook(v);
	return 0;
}

static SQInteger base_enabledebuginfo(HSQUIRRELVM v)
{
	SQObjectPtr &o=stack_get(v,2);
	
	sq_enabledebuginfo(v,SQVM::IsFalse(o)?SQFalse:SQTrue);
	return 0;
}

static SQInteger __getcallstackinfos(HSQUIRRELVM v,SQInteger level)
{
	SQStackInfos si;
	SQInteger seq = 0;
	const SQChar *name = NULL;
	
	if (SQ_SUCCEEDED(sq_stackinfos(v, level, &si)))
	{
		const SQChar *fn = _SC("unknown");
		const SQChar *src = _SC("unknown");
		if(si.funcname)fn = si.funcname;
		if(si.source)src = si.source;
		sq_newtable(v);
		sq_pushstring(v, _SC("func"), -1);
		sq_pushstring(v, fn, -1);
		sq_newslot(v, -3, SQFalse);
		sq_pushstring(v, _SC("src"), -1);
		sq_pushstring(v, src, -1);
		sq_newslot(v, -3, SQFalse);
		sq_pushstring(v, _SC("line"), -1);
		sq_pushinteger(v, si.line);
		sq_newslot(v, -3, SQFalse);
		sq_pushstring(v, _SC("locals"), -1);
		sq_newtable(v);
		seq=0;
		while ((name = sq_getlocal(v, level, seq))) {
			sq_pushstring(v, name, -1);
			sq_push(v, -2);
			sq_newslot(v, -4, SQFalse);
			sq_pop(v, 1);
			seq++;
		}
		sq_newslot(v, -3, SQFalse);
		return 1;
	}

	return 0;
}
static SQInteger base_getstackinfos(HSQUIRRELVM v)
{
	SQInteger level;
	sq_getinteger(v, -1, &level);
	return __getcallstackinfos(v,level);
}

static SQInteger base_assert(HSQUIRRELVM v)
{
	if(SQVM::IsFalse(stack_get(v,2))){
		return sq_throwerror(v,_SC("assertion failed"));
	}
	return 0;
}

static SQInteger get_slice_params(HSQUIRRELVM v,SQInteger &sidx,SQInteger &eidx,SQObjectPtr &o)
{
	SQInteger top = sq_gettop(v);
	sidx=0;
	eidx=0;
	o=stack_get(v,1);
	SQObjectPtr &start=stack_get(v,2);
	if(type(start)!=OT_NULL && sq_isnumeric(start)){
		sidx=tointeger(start);
	}
	if(top>2){
		SQObjectPtr &end=stack_get(v,3);
		if(sq_isnumeric(end)){
			eidx=tointeger(end);
		}
	}
	else {
		eidx = sq_getsize(v,1);
	}
	return 1;
}

static SQInteger base_print(HSQUIRRELVM v)
{
	const SQChar *str;
	sq_tostring(v,2);
	sq_getstring(v,-1,&str);
	if(_ss(v)->_printfunc) _ss(v)->_printfunc(v,_SC("%s"),str);
	return 0;
}

static SQInteger base_error(HSQUIRRELVM v)
{
	const SQChar *str;
	sq_tostring(v,2);
	sq_getstring(v,-1,&str);
	if(_ss(v)->_errorfunc) _ss(v)->_errorfunc(v,_SC("%s"),str);
	return 0;
}

static SQInteger base_compilestring(HSQUIRRELVM v)
{
	SQInteger nargs=sq_gettop(v);
	const SQChar *src=NULL,*name=_SC("unnamedbuffer");
	SQInteger size;
	sq_getstring(v,2,&src);
	size=sq_getsize(v,2);
	if(nargs>2){
		sq_getstring(v,3,&name);
	}
	if(SQ_SUCCEEDED(sq_compilebuffer(v,src,size,name,SQFalse)))
		return 1;
	else
		return SQ_ERROR;
}

static SQInteger base_newthread(HSQUIRRELVM v)
{
	SQObjectPtr &func = stack_get(v,2);
	SQInteger stksize = (_closure(func)->_function->_stacksize << 1) +2;
	HSQUIRRELVM newv = sq_newthread(v, (stksize < MIN_STACK_OVERHEAD + 2)? MIN_STACK_OVERHEAD + 2 : stksize);
	sq_move(newv,v,-2);
	return 1;
}

static SQInteger base_suspend(HSQUIRRELVM v)
{
	return sq_suspendvm(v);
}

static SQInteger base_array(HSQUIRRELVM v)
{
	SQArray *a;
	SQObject &size = stack_get(v,2);
	if(sq_gettop(v) > 2) {
		a = SQArray::Create(_ss(v),0);
		a->Resize(tointeger(size),stack_get(v,3));
	}
	else {
		a = SQArray::Create(_ss(v),tointeger(size));
	}
	v->Push(a);
	return 1;
}

static SQInteger base_type(HSQUIRRELVM v)
{
	SQObjectPtr &o = stack_get(v,2);
	v->Push(SQString::Create(_ss(v),GetTypeName(o),-1));
	return 1;
}

static SQInteger base_callee(HSQUIRRELVM v)
{
	if(v->_callsstacksize > 1)
	{
		v->Push(v->_callsstack[v->_callsstacksize - 2]._closure);
		return 1;
	}
	return sq_throwerror(v,_SC("no closure in the calls stack"));
}

static SQRegFunction base_funcs[]={
	//generic
	{_SC("seterrorhandler"),base_seterrorhandler,2, NULL},
	{_SC("setdebughook"),base_setdebughook,2, NULL},
	{_SC("enabledebuginfo"),base_enabledebuginfo,2, NULL},
	{_SC("getstackinfos"),base_getstackinfos,2, _SC(".n")},
	{_SC("getroottable"),base_getroottable,1, NULL},
	{_SC("setroottable"),base_setroottable,2, NULL},
	{_SC("getconsttable"),base_getconsttable,1, NULL},
	{_SC("setconsttable"),base_setconsttable,2, NULL},
	{_SC("assert"),base_assert,2, NULL},
	{_SC("print"),base_print,2, NULL},
	{_SC("error"),base_error,2, NULL},
	{_SC("compilestring"),base_compilestring,-2, _SC(".ss")},
	{_SC("newthread"),base_newthread,2, _SC(".c")},
	{_SC("suspend"),base_suspend,-1, NULL},
	{_SC("array"),base_array,-2, _SC(".n")},
	{_SC("type"),base_type,2, NULL},
	{_SC("callee"),base_callee,0,NULL},
	{_SC("dummy"),base_dummy,0,NULL},
#ifndef NO_GARBAGE_COLLECTOR
	{_SC("collectgarbage"),base_collectgarbage,0, NULL},
	{_SC("resurrectunreachable"),base_resurectureachable,0, NULL},
#endif
	{0,0}
};

void sq_base_register(HSQUIRRELVM v)
{
	SQInteger i=0;
	sq_pushroottable(v);
	while(base_funcs[i].name!=0) {
		sq_pushstring(v,base_funcs[i].name,-1);
		sq_newclosure(v,base_funcs[i].f,0);
		sq_setnativeclosurename(v,-1,base_funcs[i].name);
		sq_setparamscheck(v,base_funcs[i].nparamscheck,base_funcs[i].typemask);
		sq_newslot(v,-3, SQFalse);
		i++;
	}
	
	sq_pushstring(v,_SC("_versionnumber_"),-1);
	sq_pushinteger(v,SQUIRREL_VERSION_NUMBER);
	sq_newslot(v,-3, SQFalse);
	sq_pushstring(v,_SC("_version_"),-1);
	sq_pushstring(v,SQUIRREL_VERSION,-1);
	sq_newslot(v,-3, SQFalse);
	sq_pushstring(v,_SC("_charsize_"),-1);
	sq_pushinteger(v,sizeof(SQChar));
	sq_newslot(v,-3, SQFalse);
	sq_pushstring(v,_SC("_intsize_"),-1);
	sq_pushinteger(v,sizeof(SQInteger));
	sq_newslot(v,-3, SQFalse);
	sq_pushstring(v,_SC("_floatsize_"),-1);
	sq_pushinteger(v,sizeof(SQFloat));
	sq_newslot(v,-3, SQFalse);
	sq_pop(v,1);
}

static SQInteger default_delegate_len(HSQUIRRELVM v)
{
	v->Push(SQInteger(sq_getsize(v,1)));
	return 1;
}

static SQInteger default_delegate_tofloat(HSQUIRRELVM v)
{
	SQObjectPtr &o=stack_get(v,1);
	switch(type(o)){
	case OT_STRING:{
		SQObjectPtr res;
		if(str2num(_stringval(o),res)){
			v->Push(SQObjectPtr(tofloat(res)));
			break;
		}}
		return sq_throwerror(v, _SC("cannot convert the string"));
		break;
	case OT_INTEGER:case OT_FLOAT:
		v->Push(SQObjectPtr(tofloat(o)));
		break;
	case OT_BOOL:
		v->Push(SQObjectPtr((SQFloat)(_integer(o)?1:0)));
		break;
	default:
		v->PushNull();
		break;
	}
	return 1;
}

static SQInteger default_delegate_tointeger(HSQUIRRELVM v)
{
	SQObjectPtr &o=stack_get(v,1);
	switch(type(o)){
	case OT_STRING:{
		SQObjectPtr res;
		if(str2num(_stringval(o),res)){
			v->Push(SQObjectPtr(tointeger(res)));
			break;
		}}
		return sq_throwerror(v, _SC("cannot convert the string"));
		break;
	case OT_INTEGER:case OT_FLOAT:
		v->Push(SQObjectPtr(tointeger(o)));
		break;
	case OT_BOOL:
		v->Push(SQObjectPtr(_integer(o)?(SQInteger)1:(SQInteger)0));
		break;
	default:
		v->PushNull();
		break;
	}
	return 1;
}

static SQInteger default_delegate_tostring(HSQUIRRELVM v)
{
	sq_tostring(v,1);
	return 1;
}

static SQInteger obj_delegate_weakref(HSQUIRRELVM v)
{
	sq_weakref(v,1);
	return 1;
}

static SQInteger obj_clear(HSQUIRRELVM v)
{
	return sq_clear(v,-1);
}


static SQInteger number_delegate_tochar(HSQUIRRELVM v)
{
	SQObject &o=stack_get(v,1);
	SQChar c = (SQChar)tointeger(o);
	v->Push(SQString::Create(_ss(v),(const SQChar *)&c,1));
	return 1;
}



/////////////////////////////////////////////////////////////////
//TABLE DEFAULT DELEGATE

static SQInteger table_rawdelete(HSQUIRRELVM v)
{
	if(SQ_FAILED(sq_rawdeleteslot(v,1,SQTrue)))
		return SQ_ERROR;
	return 1;
}


static SQInteger container_rawexists(HSQUIRRELVM v)
{
	if(SQ_SUCCEEDED(sq_rawget(v,-2))) {
		sq_pushbool(v,SQTrue);
		return 1;
	}
	sq_pushbool(v,SQFalse);
	return 1;
}

static SQInteger container_rawset(HSQUIRRELVM v)
{
	return sq_rawset(v,-3);
}


static SQInteger container_rawget(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_rawget(v,-2))?1:SQ_ERROR;
}

static SQInteger table_setdelegate(HSQUIRRELVM v)
{
	if(SQ_FAILED(sq_setdelegate(v,-2)))
		return SQ_ERROR;
	sq_push(v,-1); // -1 because sq_setdelegate pops 1
	return 1;
}

static SQInteger table_getdelegate(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_getdelegate(v,-1))?1:SQ_ERROR;
}

SQRegFunction SQSharedState::_table_default_delegate_funcz[]={
	{_SC("len"),default_delegate_len,1, _SC("t")},
	{_SC("rawget"),container_rawget,2, _SC("t")},
	{_SC("rawset"),container_rawset,3, _SC("t")},
	{_SC("rawdelete"),table_rawdelete,2, _SC("t")},
	{_SC("rawin"),container_rawexists,2, _SC("t")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{_SC("clear"),obj_clear,1, _SC(".")},
	{_SC("setdelegate"),table_setdelegate,2, _SC(".t|o")},
	{_SC("getdelegate"),table_getdelegate,1, _SC(".")},
	{0,0}
};

//ARRAY DEFAULT DELEGATE///////////////////////////////////////

static SQInteger array_append(HSQUIRRELVM v)
{
	return sq_arrayappend(v,-2);
}

static SQInteger array_extend(HSQUIRRELVM v)
{
	_array(stack_get(v,1))->Extend(_array(stack_get(v,2)));
	return 0;
}

static SQInteger array_reverse(HSQUIRRELVM v)
{
	return sq_arrayreverse(v,-1);
}

static SQInteger array_pop(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_arraypop(v,1,SQTrue))?1:SQ_ERROR;
}

static SQInteger array_top(HSQUIRRELVM v)
{
	SQObject &o=stack_get(v,1);
	if(_array(o)->Size()>0){
		v->Push(_array(o)->Top());
		return 1;
	}
	else return sq_throwerror(v,_SC("top() on a empty array"));
}

static SQInteger array_insert(HSQUIRRELVM v)
{
	SQObject &o=stack_get(v,1);
	SQObject &idx=stack_get(v,2);
	SQObject &val=stack_get(v,3);
	if(!_array(o)->Insert(tointeger(idx),val))
		return sq_throwerror(v,_SC("index out of range"));
	return 0;
}

static SQInteger array_remove(HSQUIRRELVM v)
{
	SQObject &o = stack_get(v, 1);
	SQObject &idx = stack_get(v, 2);
	if(!sq_isnumeric(idx)) return sq_throwerror(v, _SC("wrong type"));
	SQObjectPtr val;
	if(_array(o)->Get(tointeger(idx), val)) {
		_array(o)->Remove(tointeger(idx));
		v->Push(val);
		return 1;
	}
	return sq_throwerror(v, _SC("idx out of range"));
}

static SQInteger array_resize(HSQUIRRELVM v)
{
	SQObject &o = stack_get(v, 1);
	SQObject &nsize = stack_get(v, 2);
	SQObjectPtr fill;
	if(sq_isnumeric(nsize)) {
		if(sq_gettop(v) > 2)
			fill = stack_get(v, 3);
		_array(o)->Resize(tointeger(nsize),fill);
		return 0;
	}
	return sq_throwerror(v, _SC("size must be a number"));
}

static SQInteger __map_array(SQArray *dest,SQArray *src,HSQUIRRELVM v) {
	SQObjectPtr temp;
	SQInteger size = src->Size();
	for(SQInteger n = 0; n < size; n++) {
		src->Get(n,temp);
		v->Push(src);
		v->Push(temp);
		if(SQ_FAILED(sq_call(v,2,SQTrue,SQFalse))) {
			return SQ_ERROR;
		}
		dest->Set(n,v->GetUp(-1));
		v->Pop();
	}
	return 0;
}

static SQInteger array_map(HSQUIRRELVM v)
{
	SQObject &o = stack_get(v,1);
	SQInteger size = _array(o)->Size();
	SQObjectPtr ret = SQArray::Create(_ss(v),size);
	if(SQ_FAILED(__map_array(_array(ret),_array(o),v)))
		return SQ_ERROR;
	v->Push(ret);
	return 1;
}

static SQInteger array_apply(HSQUIRRELVM v)
{
	SQObject &o = stack_get(v,1);
	if(SQ_FAILED(__map_array(_array(o),_array(o),v)))
		return SQ_ERROR;
	return 0;
}

static SQInteger array_reduce(HSQUIRRELVM v)
{
	SQObject &o = stack_get(v,1);
	SQArray *a = _array(o);
	SQInteger size = a->Size();
	if(size == 0) {
		return 0;
	}
	SQObjectPtr res;
	a->Get(0,res);
	if(size > 1) {
		SQObjectPtr other;
		for(SQInteger n = 1; n < size; n++) {
			a->Get(n,other);
			v->Push(o);
			v->Push(res);
			v->Push(other);
			if(SQ_FAILED(sq_call(v,3,SQTrue,SQFalse))) {
				return SQ_ERROR;
			}
			res = v->GetUp(-1);
			v->Pop();
		}
	}
	v->Push(res);
	return 1;
}

static SQInteger array_filter(HSQUIRRELVM v)
{
	SQObject &o = stack_get(v,1);
	SQArray *a = _array(o);
	SQObjectPtr ret = SQArray::Create(_ss(v),0);
	SQInteger size = a->Size();
	SQObjectPtr val;
	for(SQInteger n = 0; n < size; n++) {
		a->Get(n,val);
		v->Push(o);
		v->Push(n);
		v->Push(val);
		if(SQ_FAILED(sq_call(v,3,SQTrue,SQFalse))) {
			return SQ_ERROR;
		}
		if(!SQVM::IsFalse(v->GetUp(-1))) {
			_array(ret)->Append(val);
		}
		v->Pop();
	}
	v->Push(ret);
	return 1;
}

static SQInteger array_find(HSQUIRRELVM v)
{
	SQObject &o = stack_get(v,1);
	SQObjectPtr &val = stack_get(v,2);
	SQArray *a = _array(o);
	SQInteger size = a->Size();
	SQObjectPtr temp;
	for(SQInteger n = 0; n < size; n++) {
		bool res = false;
		a->Get(n,temp);
		if(SQVM::IsEqual(temp,val,res) && res) {
			v->Push(n);
			return 1;
		}
	}
	return 0;
}

//QSORT ala Sedgewick
bool _qsort_compare(HSQUIRRELVM v,SQObjectPtr &arr,SQObjectPtr &a,SQObjectPtr &b,SQInteger func,SQInteger &ret)
{
	if(func < 0) {
		if(!v->ObjCmp(a,b,ret)) return false;
	}
	else {
		SQInteger top = sq_gettop(v);
		sq_push(v, func);
		sq_pushroottable(v);
		v->Push(a);
		v->Push(b);
		if(SQ_FAILED(sq_call(v, 3, SQTrue, SQFalse))) {
			if(!sq_isstring( v->_lasterror)) 
				v->Raise_Error(_SC("compare func failed"));
			return false;
		}
		sq_getinteger(v, -1, &ret);
		sq_settop(v, top);
		return true;
	}
	return true;
}
//QSORT ala Sedgewick
bool _qsort(HSQUIRRELVM v,SQObjectPtr &arr, SQInteger l, SQInteger r,SQInteger func)
{
	SQInteger i, j;
	SQArray *a=_array(arr);
	SQObjectPtr pivot,t;
	if( l < r ){
		pivot = a->_values[l];
		i = l; j = r+1;
		while(1){
			SQInteger ret;
			do { 
				++i; 
				if(i > r) break;
				if(!_qsort_compare(v,arr,a->_values[i],pivot,func,ret))
					return false;
			} while( ret <= 0);
			do {
				--j;
				if ( j < 0 ) {
					v->Raise_Error( _SC("Invalid qsort, probably compare function defect") ); 
					return false; 
				}
				if(!_qsort_compare(v,arr,a->_values[j],pivot,func,ret))
					return false;
			}
			while( ret > 0 );
			if( i >= j ) break;
			t = a->_values[i]; a->_values[i] = a->_values[j]; a->_values[j] = t;
		}
		t = a->_values[l]; a->_values[l] = a->_values[j]; a->_values[j] = t;
		if(!_qsort( v, arr, l, j-1,func)) return false;
		if(!_qsort( v, arr, j+1, r,func)) return false;
	}
	return true;
}

static SQInteger array_sort(HSQUIRRELVM v)
{
	SQInteger func = -1;
	SQObjectPtr &o = stack_get(v,1);
	//SQObject &funcobj = stack_get(v,2);
	if(_array(o)->Size() > 1) {
		if(sq_gettop(v) == 2 /*&& type(funcobj) == OT_CLOSURE || type(funcobj) == OT_NATIVECLOSURE*/) func = 2;
		if(!_qsort(v, o, 0, _array(o)->Size()-1, func))
			return SQ_ERROR;

	}
	return 0;
}
static SQInteger array_slice(HSQUIRRELVM v)
{
	SQInteger sidx,eidx;
	SQObjectPtr o;
	if(get_slice_params(v,sidx,eidx,o)==-1)return -1;
	SQInteger alen = _array(o)->Size();
	if(sidx < 0)sidx = alen + sidx;
	if(eidx < 0)eidx = alen + eidx;
	if(eidx < sidx)return sq_throwerror(v,_SC("wrong indexes"));
	if(eidx > alen)return sq_throwerror(v,_SC("slice out of range"));
	SQArray *arr=SQArray::Create(_ss(v),eidx-sidx);
	SQObjectPtr t;
	SQInteger count=0;
	for(SQInteger i=sidx;i<eidx;i++){
		_array(o)->Get(i,t);
		arr->Set(count++,t);
	}
	v->Push(arr);
	return 1;
	
}

SQRegFunction SQSharedState::_array_default_delegate_funcz[]={
	{_SC("len"),default_delegate_len,1, _SC("a")},
	{_SC("append"),array_append,2, _SC("a")},
	{_SC("extend"),array_extend,2, _SC("aa")},
	{_SC("push"),array_append,2, _SC("a")},
	{_SC("pop"),array_pop,1, _SC("a")},
	{_SC("top"),array_top,1, _SC("a")},
	{_SC("insert"),array_insert,3, _SC("an")},
	{_SC("remove"),array_remove,2, _SC("an")},
	{_SC("resize"),array_resize,-2, _SC("an")},
	{_SC("reverse"),array_reverse,1, _SC("a")},
	{_SC("sort"),array_sort,-1, _SC("ac")},
	{_SC("slice"),array_slice,-1, _SC("ann")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{_SC("clear"),obj_clear,1, _SC(".")},
	{_SC("map"),array_map,2, _SC("ac")}, 
	{_SC("apply"),array_apply,2, _SC("ac")}, 
	{_SC("reduce"),array_reduce,2, _SC("ac")}, 
	{_SC("filter"),array_filter,2, _SC("ac")},
	{_SC("find"),array_find,2, _SC("a.")},
	{0,0}
};

//STRING DEFAULT DELEGATE//////////////////////////
static SQInteger string_slice(HSQUIRRELVM v)
{
	SQInteger sidx,eidx;
	SQObjectPtr o;
	if(SQ_FAILED(get_slice_params(v,sidx,eidx,o)))return -1;
	SQInteger slen = _string(o)->_len;
	if(sidx < 0)sidx = slen + sidx;
	if(eidx < 0)eidx = slen + eidx;
	if(eidx < sidx)	return sq_throwerror(v,_SC("wrong indexes"));
	if(eidx > slen)	return sq_throwerror(v,_SC("slice out of range"));
	v->Push(SQString::Create(_ss(v),&_stringval(o)[sidx],eidx-sidx));
	return 1;
}

static SQInteger string_find(HSQUIRRELVM v)
{
	SQInteger top,start_idx=0;
	const SQChar *str,*substr,*ret;
	if(((top=sq_gettop(v))>1) && SQ_SUCCEEDED(sq_getstring(v,1,&str)) && SQ_SUCCEEDED(sq_getstring(v,2,&substr))){
		if(top>2)sq_getinteger(v,3,&start_idx);
		if((sq_getsize(v,1)>start_idx) && (start_idx>=0)){
			ret=scstrstr(&str[start_idx],substr);
			if(ret){
				sq_pushinteger(v,(SQInteger)(ret-str));
				return 1;
			}
		}
		return 0;
	}
	return sq_throwerror(v,_SC("invalid param"));
}

#define STRING_TOFUNCZ(func) static SQInteger string_##func(HSQUIRRELVM v) \
{ \
	SQObject str=stack_get(v,1); \
	SQInteger len=_string(str)->_len; \
	const SQChar *sThis=_stringval(str); \
	SQChar *sNew=(_ss(v)->GetScratchPad(rsl(len))); \
	for(SQInteger i=0;i<len;i++) sNew[i]=func(sThis[i]); \
	v->Push(SQString::Create(_ss(v),sNew,len)); \
	return 1; \
}


STRING_TOFUNCZ(tolower)
STRING_TOFUNCZ(toupper)

SQRegFunction SQSharedState::_string_default_delegate_funcz[]={
	{_SC("len"),default_delegate_len,1, _SC("s")},
	{_SC("tointeger"),default_delegate_tointeger,1, _SC("s")},
	{_SC("tofloat"),default_delegate_tofloat,1, _SC("s")},
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{_SC("slice"),string_slice,-1, _SC(" s n  n")},
	{_SC("find"),string_find,-2, _SC("s s n ")},
	{_SC("tolower"),string_tolower,1, _SC("s")},
	{_SC("toupper"),string_toupper,1, _SC("s")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{0,0}
};

//INTEGER DEFAULT DELEGATE//////////////////////////
SQRegFunction SQSharedState::_number_default_delegate_funcz[]={
	{_SC("tointeger"),default_delegate_tointeger,1, _SC("n|b")},
	{_SC("tofloat"),default_delegate_tofloat,1, _SC("n|b")},
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{_SC("tochar"),number_delegate_tochar,1, _SC("n|b")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{0,0}
};

//CLOSURE DEFAULT DELEGATE//////////////////////////
static SQInteger closure_pcall(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_call(v,sq_gettop(v)-1,SQTrue,SQFalse))?1:SQ_ERROR;
}

static SQInteger closure_call(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_call(v,sq_gettop(v)-1,SQTrue,SQTrue))?1:SQ_ERROR;
}

static SQInteger _closure_acall(HSQUIRRELVM v,SQBool raiseerror)
{
	SQArray *aparams=_array(stack_get(v,2));
	SQInteger nparams=aparams->Size();
	v->Push(stack_get(v,1));
	for(SQInteger i=0;i<nparams;i++)v->Push(aparams->_values[i]);
	return SQ_SUCCEEDED(sq_call(v,nparams,SQTrue,raiseerror))?1:SQ_ERROR;
}

static SQInteger closure_acall(HSQUIRRELVM v)
{
	return _closure_acall(v,SQTrue);
}

static SQInteger closure_pacall(HSQUIRRELVM v)
{
	return _closure_acall(v,SQFalse);
}

static SQInteger closure_bindenv(HSQUIRRELVM v)
{
	if(SQ_FAILED(sq_bindenv(v,1)))
		return SQ_ERROR;
	return 1;
}

static SQInteger closure_getinfos(HSQUIRRELVM v) {
	SQObject o = stack_get(v,1);
	SQTable *res = SQTable::Create(_ss(v),4);
	if(type(o) == OT_CLOSURE) {
		SQFunctionProto *f = _closure(o)->_function;
		SQInteger nparams = f->_nparameters + (f->_varparams?1:0);
		SQObjectPtr params = SQArray::Create(_ss(v),nparams);
		for(SQInteger n = 0; n<f->_nparameters; n++) {
			_array(params)->Set((SQInteger)n,f->_parameters[n]);
		}
		if(f->_varparams) {
			_array(params)->Set(nparams-1,SQString::Create(_ss(v),_SC("..."),-1));
		}
		res->NewSlot(SQString::Create(_ss(v),_SC("native"),-1),false);
		res->NewSlot(SQString::Create(_ss(v),_SC("name"),-1),f->_name);
		res->NewSlot(SQString::Create(_ss(v),_SC("src"),-1),f->_sourcename);
		res->NewSlot(SQString::Create(_ss(v),_SC("parameters"),-1),params);
		res->NewSlot(SQString::Create(_ss(v),_SC("varargs"),-1),f->_varparams);
	}
	else { //OT_NATIVECLOSURE 
		SQNativeClosure *nc = _nativeclosure(o);
		res->NewSlot(SQString::Create(_ss(v),_SC("native"),-1),true);
		res->NewSlot(SQString::Create(_ss(v),_SC("name"),-1),nc->_name);
		res->NewSlot(SQString::Create(_ss(v),_SC("paramscheck"),-1),nc->_nparamscheck);
		SQObjectPtr typecheck;
		if(nc->_typecheck.size() > 0) {
			typecheck =
				SQArray::Create(_ss(v), nc->_typecheck.size());
			for(SQUnsignedInteger n = 0; n<nc->_typecheck.size(); n++) {
					_array(typecheck)->Set((SQInteger)n,nc->_typecheck[n]);
			}
		}
		res->NewSlot(SQString::Create(_ss(v),_SC("typecheck"),-1),typecheck);
	}
	v->Push(res);
	return 1;
}


SQRegFunction SQSharedState::_closure_default_delegate_funcz[]={
	{_SC("call"),closure_call,-1, _SC("c")},
	{_SC("pcall"),closure_pcall,-1, _SC("c")},
	{_SC("acall"),closure_acall,2, _SC("ca")},
	{_SC("pacall"),closure_pacall,2, _SC("ca")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{_SC("bindenv"),closure_bindenv,2, _SC("c x|y|t")},
	{_SC("getinfos"),closure_getinfos,1, _SC("c")},
	{0,0}
};

//GENERATOR DEFAULT DELEGATE
static SQInteger generator_getstatus(HSQUIRRELVM v)
{
	SQObject &o=stack_get(v,1);
	switch(_generator(o)->_state){
		case SQGenerator::eSuspended:v->Push(SQString::Create(_ss(v),_SC("suspended")));break;
		case SQGenerator::eRunning:v->Push(SQString::Create(_ss(v),_SC("running")));break;
		case SQGenerator::eDead:v->Push(SQString::Create(_ss(v),_SC("dead")));break;
	}
	return 1;
}

SQRegFunction SQSharedState::_generator_default_delegate_funcz[]={
	{_SC("getstatus"),generator_getstatus,1, _SC("g")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{0,0}
};

//THREAD DEFAULT DELEGATE
static SQInteger thread_call(HSQUIRRELVM v)
{
	SQObjectPtr o = stack_get(v,1);
	if(type(o) == OT_THREAD) {
		SQInteger nparams = sq_gettop(v);
		_thread(o)->Push(_thread(o)->_roottable);
		for(SQInteger i = 2; i<(nparams+1); i++)
			sq_move(_thread(o),v,i);
		if(SQ_SUCCEEDED(sq_call(_thread(o),nparams,SQTrue,SQFalse))) {
			sq_move(v,_thread(o),-1);
			sq_pop(_thread(o),1);
			return 1;
		}
		v->_lasterror = _thread(o)->_lasterror;
		return SQ_ERROR;
	}
	return sq_throwerror(v,_SC("wrong parameter"));
}

static SQInteger thread_wakeup(HSQUIRRELVM v)
{
	SQObjectPtr o = stack_get(v,1);
	if(type(o) == OT_THREAD) {
		SQVM *thread = _thread(o);
		SQInteger state = sq_getvmstate(thread);
		if(state != SQ_VMSTATE_SUSPENDED) {
			switch(state) {
				case SQ_VMSTATE_IDLE:
					return sq_throwerror(v,_SC("cannot wakeup a idle thread"));
				break;
				case SQ_VMSTATE_RUNNING:
					return sq_throwerror(v,_SC("cannot wakeup a running thread"));
				break;
			}
		}
			
		SQInteger wakeupret = sq_gettop(v)>1?1:0;
		if(wakeupret) {
			sq_move(thread,v,2);
		}
		if(SQ_SUCCEEDED(sq_wakeupvm(thread,wakeupret,SQTrue,SQTrue,SQFalse))) {
			sq_move(v,thread,-1);
			sq_pop(thread,1); //pop retval
			if(sq_getvmstate(thread) == SQ_VMSTATE_IDLE) {
				sq_settop(thread,1); //pop roottable
			}
			return 1;
		}
		sq_settop(thread,1);
		v->_lasterror = thread->_lasterror;
		return SQ_ERROR;
	}
	return sq_throwerror(v,_SC("wrong parameter"));
}

static SQInteger thread_getstatus(HSQUIRRELVM v)
{
	SQObjectPtr &o = stack_get(v,1);
	switch(sq_getvmstate(_thread(o))) {
		case SQ_VMSTATE_IDLE:
			sq_pushstring(v,_SC("idle"),-1);
		break;
		case SQ_VMSTATE_RUNNING:
			sq_pushstring(v,_SC("running"),-1);
		break;
		case SQ_VMSTATE_SUSPENDED:
			sq_pushstring(v,_SC("suspended"),-1);
		break;
		default:
			return sq_throwerror(v,_SC("internal VM error"));
	}
	return 1;
}

static SQInteger thread_getstackinfos(HSQUIRRELVM v)
{
	SQObjectPtr o = stack_get(v,1);
	if(type(o) == OT_THREAD) {
		SQVM *thread = _thread(o);
		SQInteger threadtop = sq_gettop(thread);
		SQInteger level;
		sq_getinteger(v,-1,&level);
		SQRESULT res = __getcallstackinfos(thread,level);
		if(SQ_FAILED(res))
		{
			sq_settop(thread,threadtop);
			if(type(thread->_lasterror) == OT_STRING) {
				sq_throwerror(v,_stringval(thread->_lasterror));
			}
			else {
				sq_throwerror(v,_SC("unknown error"));
			}
		}
		if(res > 0) {
			//some result
			sq_move(v,thread,-1);
			sq_settop(thread,threadtop);
			return 1;
		}
		//no result
		sq_settop(thread,threadtop);
		return 0;
		
	}
	return sq_throwerror(v,_SC("wrong parameter"));
}

SQRegFunction SQSharedState::_thread_default_delegate_funcz[] = {
	{_SC("call"), thread_call, -1, _SC("v")},
	{_SC("wakeup"), thread_wakeup, -1, _SC("v")},
	{_SC("getstatus"), thread_getstatus, 1, _SC("v")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("getstackinfos"),thread_getstackinfos,2, _SC("vn")},
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{0,0},
};

static SQInteger class_getattributes(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_getattributes(v,-2))?1:SQ_ERROR;
}

static SQInteger class_setattributes(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_setattributes(v,-3))?1:SQ_ERROR;
}

static SQInteger class_instance(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_createinstance(v,-1))?1:SQ_ERROR;
}

static SQInteger class_getbase(HSQUIRRELVM v)
{
	return SQ_SUCCEEDED(sq_getbase(v,-1))?1:SQ_ERROR;
}

SQRegFunction SQSharedState::_class_default_delegate_funcz[] = {
	{_SC("getattributes"), class_getattributes, 2, _SC("y.")},
	{_SC("setattributes"), class_setattributes, 3, _SC("y..")},
	{_SC("rawget"),container_rawget,2, _SC("y")},
	{_SC("rawset"),container_rawset,3, _SC("y")},
	{_SC("rawin"),container_rawexists,2, _SC("y")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{_SC("instance"),class_instance,1, _SC("y")},
	{_SC("getbase"),class_getbase,1, _SC("y")},
	{0,0}
};

static SQInteger instance_getclass(HSQUIRRELVM v)
{
	if(SQ_SUCCEEDED(sq_getclass(v,1)))
		return 1;
	return SQ_ERROR;
}

SQRegFunction SQSharedState::_instance_default_delegate_funcz[] = {
	{_SC("getclass"), instance_getclass, 1, _SC("x")},
	{_SC("rawget"),container_rawget,2, _SC("x")},
	{_SC("rawset"),container_rawset,3, _SC("x")},
	{_SC("rawin"),container_rawexists,2, _SC("x")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{0,0}
};

static SQInteger weakref_ref(HSQUIRRELVM v)
{
	if(SQ_FAILED(sq_getweakrefval(v,1)))
		return SQ_ERROR;
	return 1;
}

SQRegFunction SQSharedState::_weakref_default_delegate_funcz[] = {
	{_SC("ref"),weakref_ref,1, _SC("r")},
	{_SC("weakref"),obj_delegate_weakref,1, NULL },
	{_SC("tostring"),default_delegate_tostring,1, _SC(".")},
	{0,0}
};