2 see copyright notice in squirrel.h
4 #include "sqpcheader.h"
8 #include "sqfuncproto.h"
10 #include "sqclosure.h"
13 #include "squserdata.h"
17 #define TOP() (_stack._vals[_top-1])
19 bool SQVM::BW_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2)
22 SQInteger i1 = _integer(o1), i2 = _integer(o2);
23 if((type(o1)==OT_INTEGER) && (type(o2)==OT_INTEGER))
26 case BW_AND: res = i1 & i2; break;
27 case BW_OR: res = i1 | i2; break;
28 case BW_XOR: res = i1 ^ i2; break;
29 case BW_SHIFTL: res = i1 << i2; break;
30 case BW_SHIFTR: res = i1 >> i2; break;
31 case BW_USHIFTR:res = (SQInteger)(*((SQUnsignedInteger*)&i1) >> i2); break;
32 default: { Raise_Error(_SC("internal vm error bitwise op failed")); return false; }
35 else { Raise_Error(_SC("bitwise op between '%s' and '%s'"),GetTypeName(o1),GetTypeName(o2)); return false;}
40 bool SQVM::ARITH_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2)
42 if(sq_isnumeric(o1) && sq_isnumeric(o2)) {
43 if((type(o1)==OT_INTEGER) && (type(o2)==OT_INTEGER)) {
44 SQInteger res, i1 = _integer(o1), i2 = _integer(o2);
46 case '+': res = i1 + i2; break;
47 case '-': res = i1 - i2; break;
48 case '/': if(i2 == 0) { Raise_Error(_SC("division by zero")); return false; }
51 case '*': res = i1 * i2; break;
52 case '%': res = i1 % i2; break;
53 default: res = 0xDEADBEEF;
57 SQFloat res, f1 = tofloat(o1), f2 = tofloat(o2);
59 case '+': res = f1 + f2; break;
60 case '-': res = f1 - f2; break;
61 case '/': res = f1 / f2; break;
62 case '*': res = f1 * f2; break;
63 case '%': res = SQFloat(fmod((double)f1,(double)f2)); break;
69 if(op == '+' && (type(o1) == OT_STRING || type(o2) == OT_STRING)){
70 if(!StringCat(o1, o2, trg)) return false;
72 else if(!ArithMetaMethod(op,o1,o2,trg)) {
73 Raise_Error(_SC("arith op %c on between '%s' and '%s'"),op,GetTypeName(o1),GetTypeName(o2)); return false;
79 SQVM::SQVM(SQSharedState *ss)
84 _suspended_root = SQFalse;
89 _errorhandler = _null_;
92 INIT_CHAIN();ADD_TO_CHAIN(&_ss(this)->_gc_chain,this);
99 _errorhandler = _null_;
102 SQInteger size=_stack.size();
103 for(SQInteger i=0;i<size;i++)
110 sq_free(_callsstack,_alloccallsstacksize*sizeof(CallInfo));
111 REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain,this);
114 bool SQVM::ArithMetaMethod(SQInteger op,const SQObjectPtr &o1,const SQObjectPtr &o2,SQObjectPtr &dest)
118 case _SC('+'): mm=MT_ADD; break;
119 case _SC('-'): mm=MT_SUB; break;
120 case _SC('/'): mm=MT_DIV; break;
121 case _SC('*'): mm=MT_MUL; break;
122 case _SC('%'): mm=MT_MODULO; break;
123 default: mm = MT_ADD; assert(0); break; //shutup compiler
125 if(is_delegable(o1) && _delegable(o1)->_delegate) {
127 return CallMetaMethod(_delegable(o1),mm,2,dest);
132 bool SQVM::NEG_OP(SQObjectPtr &trg,const SQObjectPtr &o)
145 if(_delegable(o)->_delegate) {
147 if(CallMetaMethod(_delegable(o), MT_UNM, 1, temp_reg)) {
152 default:break; //shutup compiler
154 Raise_Error(_SC("attempt to negate a %s"), GetTypeName(o));
158 #define _RET_SUCCEED(exp) { result = (exp); return true; }
159 bool SQVM::ObjCmp(const SQObjectPtr &o1,const SQObjectPtr &o2,SQInteger &result)
161 if(type(o1)==type(o2)){
162 if(_userpointer(o1)==_userpointer(o2))_RET_SUCCEED(0);
166 _RET_SUCCEED(scstrcmp(_stringval(o1),_stringval(o2)));
168 _RET_SUCCEED(_integer(o1)-_integer(o2));
170 _RET_SUCCEED((_float(o1)<_float(o2))?-1:1);
174 if(_delegable(o1)->_delegate) {
176 if(CallMetaMethod(_delegable(o1),MT_CMP,2,res)) break;
178 //continues through (no break needed)
180 _RET_SUCCEED( _userpointer(o1) < _userpointer(o2)?-1:1 );
182 if(type(res)!=OT_INTEGER) { Raise_CompareError(o1,o2); return false; }
183 _RET_SUCCEED(_integer(res));
187 if(sq_isnumeric(o1) && sq_isnumeric(o2)){
188 if((type(o1)==OT_INTEGER) && (type(o2)==OT_FLOAT)) {
189 if( _integer(o1)==_float(o2) ) { _RET_SUCCEED(0); }
190 else if( _integer(o1)<_float(o2) ) { _RET_SUCCEED(-1); }
194 if( _float(o1)==_integer(o2) ) { _RET_SUCCEED(0); }
195 else if( _float(o1)<_integer(o2) ) { _RET_SUCCEED(-1); }
199 else if(type(o1)==OT_NULL) {_RET_SUCCEED(-1);}
200 else if(type(o2)==OT_NULL) {_RET_SUCCEED(1);}
201 else { Raise_CompareError(o1,o2); return false; }
205 _RET_SUCCEED(0); //cannot happen
208 bool SQVM::CMP_OP(CmpOP op, const SQObjectPtr &o1,const SQObjectPtr &o2,SQObjectPtr &res)
211 if(ObjCmp(o1,o2,r)) {
213 case CMP_G: res = (r > 0)?_true_:_false_; return true;
214 case CMP_GE: res = (r >= 0)?_true_:_false_; return true;
215 case CMP_L: res = (r < 0)?_true_:_false_; return true;
216 case CMP_LE: res = (r <= 0)?_true_:_false_; return true;
224 void SQVM::ToString(const SQObjectPtr &o,SQObjectPtr &res)
231 scsprintf(_sp(rsl(NUMBER_MAX_CHAR+1)),_SC("%g"),_float(o));
234 scsprintf(_sp(rsl(NUMBER_MAX_CHAR+1)),_SC("%d"),_integer(o));
237 scsprintf(_sp(rsl(6)),_integer(o)?_SC("true"):_SC("false"));
242 if(_delegable(o)->_delegate) {
244 if(CallMetaMethod(_delegable(o),MT_TOSTRING,1,res)) {
245 if(type(res) == OT_STRING)
247 //else keeps going to the default
251 scsprintf(_sp(rsl(sizeof(void*)+20)),_SC("(%s : 0x%p)"),GetTypeName(o),(void*)_rawval(o));
253 res = SQString::Create(_ss(this),_spval);
257 bool SQVM::StringCat(const SQObjectPtr &str,const SQObjectPtr &obj,SQObjectPtr &dest)
262 SQInteger l = _string(a)->_len , ol = _string(b)->_len;
263 SQChar *s = _sp(rsl(l + ol + 1));
264 memcpy(s, _stringval(a), rsl(l));
265 memcpy(s + l, _stringval(b), rsl(ol));
266 dest = SQString::Create(_ss(this), _spval, l + ol);
270 void SQVM::TypeOf(const SQObjectPtr &obj1,SQObjectPtr &dest)
272 if(is_delegable(obj1) && _delegable(obj1)->_delegate) {
274 if(CallMetaMethod(_delegable(obj1),MT_TYPEOF,1,dest))
277 dest = SQString::Create(_ss(this),GetTypeName(obj1));
280 bool SQVM::Init(SQVM *friendvm, SQInteger stacksize)
282 _stack.resize(stacksize);
283 //_callsstack.reserve(4);
284 _alloccallsstacksize = 4;
286 _callsstack = (CallInfo*)sq_malloc(_alloccallsstacksize*sizeof(CallInfo));
290 _roottable = SQTable::Create(_ss(this), 0);
292 _roottable = friendvm->_roottable;
293 _errorhandler = friendvm->_errorhandler;
294 _debughook = friendvm->_debughook;
297 sq_base_register(this);
301 extern SQInstructionDesc g_InstrDesc[];
303 bool SQVM::StartCall(SQClosure *closure,SQInteger target,SQInteger args,SQInteger stackbase,bool tailcall)
305 SQFunctionProto *func = _funcproto(closure->_function);
307 const SQInteger paramssize = func->_nparameters;
308 const SQInteger newtop = stackbase + func->_stacksize;
309 SQInteger nargs = args;
310 if (paramssize != nargs) {
311 SQInteger ndef = func->_ndefaultparams;
312 if(ndef && nargs < paramssize) {
313 SQInteger diff = paramssize - nargs;
314 for(SQInteger n = ndef - diff; n < ndef; n++) {
315 _stack._vals[stackbase + (nargs++)] = closure->_defaultparams[n];
318 else if(func->_varparams)
320 if (nargs < paramssize) {
321 Raise_Error(_SC("wrong number of parameters"));
324 for(SQInteger n = 0; n < nargs - paramssize; n++) {
325 _vargsstack.push_back(_stack._vals[stackbase+paramssize+n]);
326 _stack._vals[stackbase+paramssize+n] = _null_;
330 Raise_Error(_SC("wrong number of parameters"));
335 if(type(closure->_env) == OT_WEAKREF) {
336 _stack._vals[stackbase] = _weakref(closure->_env)->_obj;
342 lc._prevstkbase = (SQInt32) ( stackbase - _stackbase );
343 lc._target = (SQInt32) target;
344 lc._prevtop = (SQInt32) (_top - _stackbase);
347 PUSH_CALLINFO(this, lc);
352 ci->_vargs.size = (SQInt32)(nargs - paramssize);
353 ci->_vargs.base = (SQInt32)(_vargsstack.size()-(ci->_vargs.size));
354 ci->_closure._unVal.pClosure = closure;
355 ci->_closure._type = OT_CLOSURE;
356 ci->_literals = func->_literals;
357 ci->_ip = func->_instructions;
358 //grows the stack if needed
359 if (((SQUnsignedInteger)newtop + (func->_stacksize<<1)) > _stack.size()) {
360 _stack.resize(_stack.size() + (func->_stacksize<<1));
364 _stackbase = stackbase;
365 if (type(_debughook) != OT_NULL && _rawval(_debughook) != _rawval(ci->_closure))
366 CallDebugHook(_SC('c'));
370 bool SQVM::Return(SQInteger _arg0, SQInteger _arg1, SQObjectPtr &retval)
372 if (type(_debughook) != OT_NULL && _rawval(_debughook) != _rawval(ci->_closure))
373 for(SQInteger i=0;i<ci->_ncalls;i++)
374 CallDebugHook(_SC('r'));
376 SQBool broot = ci->_root;
377 SQInteger last_top = _top;
378 SQInteger target = ci->_target;
379 SQInteger oldstackbase = _stackbase;
380 _stackbase -= ci->_prevstkbase;
381 _top = _stackbase + ci->_prevtop;
382 if(ci->_vargs.size) PopVarArgs(ci->_vargs);
385 if (_arg0 != MAX_FUNC_STACKSIZE) retval = _stack._vals[oldstackbase+_arg1];
386 else retval = _null_;
389 if(target != -1) { //-1 is when a class contructor ret value has to be ignored
390 if (_arg0 != MAX_FUNC_STACKSIZE)
391 STK(target) = _stack._vals[oldstackbase+_arg1];
393 STK(target) = _null_;
397 while (last_top >= _top) _stack._vals[last_top--].Null();
398 assert(oldstackbase >= _stackbase);
399 return broot?true:false;
402 #define _RET_ON_FAIL(exp) { if(!exp) return false; }
404 bool SQVM::LOCAL_INC(SQInteger op,SQObjectPtr &target, SQObjectPtr &a, SQObjectPtr &incr)
406 _RET_ON_FAIL(ARITH_OP( op , target, a, incr));
411 bool SQVM::PLOCAL_INC(SQInteger op,SQObjectPtr &target, SQObjectPtr &a, SQObjectPtr &incr)
414 _RET_ON_FAIL(ARITH_OP( op , trg, a, incr));
420 bool SQVM::DerefInc(SQInteger op,SQObjectPtr &target, SQObjectPtr &self, SQObjectPtr &key, SQObjectPtr &incr, bool postfix)
422 SQObjectPtr tmp, tself = self, tkey = key;
423 if (!Get(tself, tkey, tmp, false, true)) { Raise_IdxError(tkey); return false; }
424 _RET_ON_FAIL(ARITH_OP( op , target, tmp, incr))
425 Set(tself, tkey, target,true);
426 if (postfix) target = tmp;
430 #define arg0 (_i_._arg0)
431 #define arg1 (_i_._arg1)
432 #define sarg1 (*((SQInt32 *)&_i_._arg1))
433 #define arg2 (_i_._arg2)
434 #define arg3 (_i_._arg3)
435 #define sarg3 ((SQInteger)*((signed char *)&_i_._arg3))
437 SQRESULT SQVM::Suspend()
440 return sq_throwerror(this, _SC("cannot suspend an already suspended vm"));
441 if (_nnativecalls!=2)
442 return sq_throwerror(this, _SC("cannot suspend through native calls/metamethods"));
443 return SQ_SUSPEND_FLAG;
446 void SQVM::PopVarArgs(VarArgs &vargs)
448 for(SQInteger n = 0; n< vargs.size; n++)
449 _vargsstack.pop_back();
452 #define _FINISH(howmuchtojump) {jump = howmuchtojump; return true; }
453 bool SQVM::FOREACH_OP(SQObjectPtr &o1,SQObjectPtr &o2,SQObjectPtr
454 &o3,SQObjectPtr &o4,SQInteger arg_2,int exitpos,int &jump)
459 if((nrefidx = _table(o1)->Next(false,o4, o2, o3)) == -1) _FINISH(exitpos);
460 o4 = (SQInteger)nrefidx; _FINISH(1);
462 if((nrefidx = _array(o1)->Next(o4, o2, o3)) == -1) _FINISH(exitpos);
463 o4 = (SQInteger) nrefidx; _FINISH(1);
465 if((nrefidx = _string(o1)->Next(o4, o2, o3)) == -1)_FINISH(exitpos);
466 o4 = (SQInteger)nrefidx; _FINISH(1);
468 if((nrefidx = _class(o1)->Next(o4, o2, o3)) == -1)_FINISH(exitpos);
469 o4 = (SQInteger)nrefidx; _FINISH(1);
472 if(_delegable(o1)->_delegate) {
476 if(CallMetaMethod(_delegable(o1), MT_NEXTI, 2, itr)){
478 if(type(itr) == OT_NULL) _FINISH(exitpos);
479 if(!Get(o1, itr, o3, false,false)) {
480 Raise_Error(_SC("_nexti returned an invalid idx"));
485 Raise_Error(_SC("_nexti failed"));
490 if(_generator(o1)->_state == SQGenerator::eDead) _FINISH(exitpos);
491 if(_generator(o1)->_state == SQGenerator::eSuspended) {
493 if(type(o4) == OT_INTEGER) {
494 idx = _integer(o4) + 1;
498 _generator(o1)->Resume(this, arg_2+1);
502 Raise_Error(_SC("cannot iterate %s"), GetTypeName(o1));
504 return false; //cannot be hit(just to avoid warnings)
507 bool SQVM::DELEGATE_OP(SQObjectPtr &trg,SQObjectPtr &o1,SQObjectPtr &o2)
509 if(type(o1) != OT_TABLE) { Raise_Error(_SC("delegating a '%s'"), GetTypeName(o1)); return false; }
512 if(!_table(o1)->SetDelegate(_table(o2))){
513 Raise_Error(_SC("delegate cycle detected"));
518 _table(o1)->SetDelegate(NULL);
521 Raise_Error(_SC("using '%s' as delegate"), GetTypeName(o2));
528 #define COND_LITERAL (arg3!=0?ci->_literals[arg1]:STK(arg1))
530 #define _GUARD(exp) { if(!exp) { Raise_Error(_lasterror); SQ_THROW();} }
532 #define SQ_THROW() { goto exception_trap; }
534 bool SQVM::CLOSURE_OP(SQObjectPtr &target, SQFunctionProto *func)
537 SQClosure *closure = SQClosure::Create(_ss(this), func);
538 if((nouters = func->_noutervalues)) {
539 closure->_outervalues.reserve(nouters);
540 for(SQInteger i = 0; i<nouters; i++) {
541 SQOuterVar &v = func->_outervalues[i];
544 closure->_outervalues.push_back(_null_);
545 if(!Get(_stack._vals[_stackbase]/*STK(0)*/, v._src, closure->_outervalues.top(), false,true))
546 {Raise_IdxError(v._src); return false; }
549 closure->_outervalues.push_back(_stack._vals[_stackbase+_integer(v._src)]);
552 closure->_outervalues.push_back(_closure(ci->_closure)->_outervalues[_integer(v._src)]);
557 SQInteger ndefparams;
558 if((ndefparams = func->_ndefaultparams)) {
559 closure->_defaultparams.reserve(ndefparams);
560 for(SQInteger i = 0; i < ndefparams; i++) {
561 SQInteger spos = func->_defaultparams[i];
562 closure->_defaultparams.push_back(_stack._vals[_stackbase + spos]);
570 bool SQVM::GETVARGV_OP(SQObjectPtr &target,SQObjectPtr &index,CallInfo *ci)
572 if(ci->_vargs.size == 0) {
573 Raise_Error(_SC("the function doesn't have var args"));
576 if(!sq_isnumeric(index)){
577 Raise_Error(_SC("indexing 'vargv' with %s"),GetTypeName(index));
580 SQInteger idx = tointeger(index);
581 if(idx < 0 || idx >= ci->_vargs.size){ Raise_Error(_SC("vargv index out of range")); return false; }
582 target = _vargsstack[ci->_vargs.base+idx];
586 bool SQVM::CLASS_OP(SQObjectPtr &target,SQInteger baseclass,SQInteger attributes)
588 SQClass *base = NULL;
590 if(baseclass != -1) {
591 if(type(_stack._vals[_stackbase+baseclass]) != OT_CLASS) { Raise_Error(_SC("trying to inherit from a %s"),GetTypeName(_stack._vals[_stackbase+baseclass])); return false; }
592 base = _class(_stack._vals[_stackbase + baseclass]);
594 if(attributes != MAX_FUNC_STACKSIZE) {
595 attrs = _stack._vals[_stackbase+attributes];
597 target = SQClass::Create(_ss(this),base);
598 if(type(_class(target)->_metamethods[MT_INHERITED]) != OT_NULL) {
601 Push(target); Push(attrs);
602 Call(_class(target)->_metamethods[MT_INHERITED],nparams,_top - nparams, ret, false);
605 _class(target)->_attributes = attrs;
611 bool SQVM::IsEqual(SQObjectPtr &o1,SQObjectPtr &o2,bool &res)
613 if(type(o1) == type(o2)) {
614 res = ((_userpointer(o1) == _userpointer(o2)?true:false));
617 if(sq_isnumeric(o1) && sq_isnumeric(o2)) {
619 if(!ObjCmp(o1, o2,cmpres)) return false;
629 bool SQVM::IsFalse(SQObjectPtr &o)
631 if((type(o) & SQOBJECT_CANBEFALSE) && ( (type(o) == OT_FLOAT) && (_float(o) == SQFloat(0.0)) )
632 || (_integer(o) == 0) ) { //OT_NULL|OT_INTEGER|OT_BOOL
638 bool SQVM::GETPARENT_OP(SQObjectPtr &o,SQObjectPtr &target)
641 case OT_TABLE: target = _table(o)->_delegate?SQObjectPtr(_table(o)->_delegate):_null_;
643 case OT_CLASS: target = _class(o)->_base?_class(o)->_base:_null_;
646 Raise_Error(_SC("the %s type doesn't have a parent slot"), GetTypeName(o));
652 bool SQVM::Execute(SQObjectPtr &closure, SQInteger target, SQInteger nargs, SQInteger stackbase,SQObjectPtr &outres, SQBool raiseerror,ExecutionType et)
654 if ((_nnativecalls + 1) > MAX_NATIVE_CALLS) { Raise_Error(_SC("Native stack overflow")); return false; }
656 AutoDec ad(&_nnativecalls);
658 //temp_reg vars for OP_CALL
660 SQInteger ct_stackbase;
665 if(!StartCall(_closure(closure), _top - nargs, nargs, stackbase, false)) {
666 //call the handler if there are no calls in the stack, if not relies on the previous node
667 if(ci == NULL) CallErrorHandler(_lasterror);
672 case ET_RESUME_GENERATOR: _generator(closure)->Resume(this, target); ci->_root = SQTrue; traps += ci->_etraps; break;
674 traps = _suspended_traps;
675 ci->_root = _suspended_root;
676 ci->_vargs = _suspend_varargs;
677 _suspended = SQFalse;
686 const SQInstruction &_i_ = *ci->_ip++;
687 //dumpstack(_stackbase);
688 //scprintf("\n[%d] %s %d %d %d %d\n",ci->_ip-ci->_iv->_vals,g_InstrDesc[_i_.op].name,arg0,arg1,arg2,arg3);
692 if(type(_debughook) != OT_NULL && _rawval(_debughook) != _rawval(ci->_closure))
693 CallDebugHook(_SC('l'),arg1);
695 case _OP_LOAD: TARGET = ci->_literals[arg1]; continue;
696 case _OP_LOADINT: TARGET = (SQInteger)arg1; continue;
697 case _OP_LOADFLOAT: TARGET = *((SQFloat *)&arg1); continue;
698 case _OP_DLOAD: TARGET = ci->_literals[arg1]; STK(arg2) = ci->_literals[arg3];continue;
700 temp_reg = STK(arg1);
701 if (type(temp_reg) == OT_CLOSURE){
703 if(ci->_vargs.size) PopVarArgs(ci->_vargs);
704 for (SQInteger i = 0; i < arg3; i++) STK(i) = STK(arg2 + i);
705 ct_target = ci->_target;
706 ct_stackbase = _stackbase;
712 temp_reg = STK(arg1);
713 ct_stackbase = _stackbase+arg2;
716 SQObjectPtr clo = temp_reg;
717 SQInteger last_top = _top;
720 _GUARD(StartCall(_closure(clo), ct_target, arg3, ct_stackbase, ct_tailcall));
721 if (_funcproto(_closure(clo)->_function)->_bgenerator) {
722 SQGenerator *gen = SQGenerator::Create(_ss(this), _closure(clo));
723 _GUARD(gen->Yield(this));
724 Return(1, ct_target, clo);
725 STK(ct_target) = gen;
726 while (last_top >= _top) _stack._vals[last_top--].Null();
731 case OT_NATIVECLOSURE: {
733 _GUARD(CallNative(_nativeclosure(clo), arg3, ct_stackbase, clo,suspend));
736 _suspended_target = ct_target;
737 _suspended_root = ci->_root;
738 _suspended_traps = traps;
739 _suspend_varargs = ci->_vargs;
743 if(ct_target != -1) { //skip return value for constructors
744 STK(ct_target) = clo;
750 _GUARD(CreateClassInstance(_class(clo),inst,temp_reg));
751 STK(ct_target) = inst;
752 ct_target = -1; //fakes return value target so that is not overwritten by the constructor
753 if(type(temp_reg) != OT_NULL) {
754 _stack._vals[ct_stackbase] = inst;
755 goto common_call; //hard core spaghetti code(reissues the OP_CALL to invoke the constructor)
764 for (SQInteger i = 0; i < arg3; i++) Push(STK(arg2 + i));
765 if (_delegable(clo) && CallMetaMethod(_delegable(clo), MT_CALL, arg3+1, clo)){
766 STK(ct_target) = clo;
769 Raise_Error(_SC("attempt to call '%s'"), GetTypeName(clo));
773 Raise_Error(_SC("attempt to call '%s'"), GetTypeName(clo));
781 SQObjectPtr &key = _i_.op == _OP_PREPCALLK?(ci->_literals)[arg1]:STK(arg1);
782 SQObjectPtr &o = STK(arg2);
783 if (!Get(o, key, temp_reg,false,true)) {
784 if(type(o) == OT_CLASS) { //hack?
785 if(_class_ddel->Get(key,temp_reg)) {
791 { Raise_IdxError(key); SQ_THROW();}
794 STK(arg3) = type(o) == OT_CLASS?STK(0):o;
799 if (!Get(STK(arg2), ci->_literals[arg1], temp_reg, false,true)) { Raise_IdxError(ci->_literals[arg1]); SQ_THROW();}
802 case _OP_MOVE: TARGET = STK(arg1); continue;
804 _GUARD(NewSlot(STK(arg1), STK(arg2), STK(arg3),false));
805 if(arg0 != arg3) TARGET = STK(arg3);
807 case _OP_DELETE: _GUARD(DeleteSlot(STK(arg1), STK(arg2), TARGET)); continue;
809 if (!Set(STK(arg1), STK(arg2), STK(arg3),true)) { Raise_IdxError(STK(arg2)); SQ_THROW(); }
810 if (arg0 != arg3) TARGET = STK(arg3);
813 if (!Get(STK(arg1), STK(arg2), temp_reg, false,true)) { Raise_IdxError(STK(arg2)); SQ_THROW(); }
818 if(!IsEqual(STK(arg2),COND_LITERAL,res)) { SQ_THROW(); }
819 TARGET = res?_true_:_false_;
823 if(!IsEqual(STK(arg2),COND_LITERAL,res)) { SQ_THROW(); }
824 TARGET = (!res)?_true_:_false_;
826 case _OP_ARITH: _GUARD(ARITH_OP( arg3 , temp_reg, STK(arg2), STK(arg1))); TARGET = temp_reg; continue;
827 case _OP_BITW: _GUARD(BW_OP( arg3,TARGET,STK(arg2),STK(arg1))); continue;
829 if(type((ci)->_generator) == OT_GENERATOR) {
830 _generator((ci)->_generator)->Kill();
832 if(Return(arg0, arg1, temp_reg)){
838 case _OP_LOADNULLS:{ for(SQInt32 n=0; n < arg1; n++) STK(arg0+n) = _null_; }continue;
839 case _OP_LOADROOTTABLE: TARGET = _roottable; continue;
840 case _OP_LOADBOOL: TARGET = arg1?_true_:_false_; continue;
841 case _OP_DMOVE: STK(arg0) = STK(arg1); STK(arg2) = STK(arg3); continue;
842 case _OP_JMP: ci->_ip += (sarg1); continue;
843 case _OP_JNZ: if(!IsFalse(STK(arg0))) ci->_ip+=(sarg1); continue;
844 case _OP_JZ: if(IsFalse(STK(arg0))) ci->_ip+=(sarg1); continue;
845 case _OP_LOADFREEVAR: TARGET = _closure(ci->_closure)->_outervalues[arg1]; continue;
846 case _OP_VARGC: TARGET = SQInteger(ci->_vargs.size); continue;
848 if(!GETVARGV_OP(TARGET,STK(arg1),ci)) { SQ_THROW(); }
850 case _OP_NEWTABLE: TARGET = SQTable::Create(_ss(this), arg1); continue;
851 case _OP_NEWARRAY: TARGET = SQArray::Create(_ss(this), 0); _array(TARGET)->Reserve(arg1); continue;
852 case _OP_APPENDARRAY: _array(STK(arg0))->Append(COND_LITERAL); continue;
853 case _OP_GETPARENT: _GUARD(GETPARENT_OP(STK(arg1),TARGET)); continue;
854 case _OP_COMPARITH: _GUARD(DerefInc(arg3, TARGET, STK((((SQUnsignedInteger)arg1&0xFFFF0000)>>16)), STK(arg2), STK(arg1&0x0000FFFF), false)); continue;
855 case _OP_COMPARITHL: _GUARD(LOCAL_INC(arg3, TARGET, STK(arg1), STK(arg2))); continue;
856 case _OP_INC: {SQObjectPtr o(sarg3); _GUARD(DerefInc('+',TARGET, STK(arg1), STK(arg2), o, false));} continue;
857 case _OP_INCL: {SQObjectPtr o(sarg3); _GUARD(LOCAL_INC('+',TARGET, STK(arg1), o));} continue;
858 case _OP_PINC: {SQObjectPtr o(sarg3); _GUARD(DerefInc('+',TARGET, STK(arg1), STK(arg2), o, true));} continue;
859 case _OP_PINCL: {SQObjectPtr o(sarg3); _GUARD(PLOCAL_INC('+',TARGET, STK(arg1), o));} continue;
860 case _OP_CMP: _GUARD(CMP_OP((CmpOP)arg3,STK(arg2),STK(arg1),TARGET)) continue;
861 case _OP_EXISTS: TARGET = Get(STK(arg1), STK(arg2), temp_reg, true,false)?_true_:_false_;continue;
863 if(type(STK(arg1)) != OT_CLASS || type(STK(arg2)) != OT_INSTANCE)
864 {Raise_Error(_SC("cannot apply instanceof between a %s and a %s"),GetTypeName(STK(arg1)),GetTypeName(STK(arg2))); SQ_THROW();}
865 TARGET = _instance(STK(arg2))->InstanceOf(_class(STK(arg1)))?_true_:_false_;
868 if(IsFalse(STK(arg2))) {
874 if(!IsFalse(STK(arg2))) {
879 case _OP_NEG: _GUARD(NEG_OP(TARGET,STK(arg1))); continue;
880 case _OP_NOT: TARGET = (IsFalse(STK(arg1))?_true_:_false_); continue;
882 if(type(STK(arg1)) == OT_INTEGER) {
883 SQInteger t = _integer(STK(arg1));
884 TARGET = SQInteger(~t);
887 Raise_Error(_SC("attempt to perform a bitwise op on a %s"), GetTypeName(STK(arg1)));
890 SQClosure *c = ci->_closure._unVal.pClosure;
891 SQFunctionProto *fp = c->_function._unVal.pFunctionProto;
892 if(!CLOSURE_OP(TARGET,fp->_functions[arg1]._unVal.pFunctionProto)) { SQ_THROW(); }
896 if(type(ci->_generator) == OT_GENERATOR) {
897 if(sarg1 != MAX_FUNC_STACKSIZE) temp_reg = STK(arg1);
898 _GUARD(_generator(ci->_generator)->Yield(this));
899 traps -= ci->_etraps;
900 if(sarg1 != MAX_FUNC_STACKSIZE) STK(arg1) = temp_reg;
902 else { Raise_Error(_SC("trying to yield a '%s',only genenerator can be yielded"), GetTypeName(ci->_generator)); SQ_THROW();}
903 if(Return(arg0, arg1, temp_reg)){
912 if(type(STK(arg1)) != OT_GENERATOR){ Raise_Error(_SC("trying to resume a '%s',only genenerator can be resumed"), GetTypeName(STK(arg1))); SQ_THROW();}
913 _GUARD(_generator(STK(arg1))->Resume(this, arg0));
914 traps += ci->_etraps;
916 case _OP_FOREACH:{ int tojump;
917 _GUARD(FOREACH_OP(STK(arg0),STK(arg2),STK(arg2+1),STK(arg2+2),arg2,sarg1,tojump));
920 case _OP_POSTFOREACH:
921 assert(type(STK(arg0)) == OT_GENERATOR);
922 if(_generator(STK(arg0))->_state == SQGenerator::eDead)
923 ci->_ip += (sarg1 - 1);
925 case _OP_DELEGATE: _GUARD(DELEGATE_OP(TARGET,STK(arg1),STK(arg2))); continue;
927 if(!Clone(STK(arg1), TARGET))
928 { Raise_Error(_SC("cloning a %s"), GetTypeName(STK(arg1))); SQ_THROW();}
930 case _OP_TYPEOF: TypeOf(STK(arg1), TARGET); continue;
932 SQInstruction *_iv = _funcproto(_closure(ci->_closure)->_function)->_instructions;
933 _etraps.push_back(SQExceptionTrap(_top,_stackbase, &_iv[(ci->_ip-_iv)+arg1], arg0)); traps++;
938 for(SQInteger i = 0; i < arg0; i++) {
939 _etraps.pop_back(); traps--;
944 case _OP_THROW: Raise_Error(TARGET); SQ_THROW(); continue;
945 case _OP_CLASS: _GUARD(CLASS_OP(TARGET,arg1,arg2)); continue;
947 bool bstatic = (arg0&NEW_SLOT_STATIC_FLAG)?true:false;
948 if(type(STK(arg1)) == OT_CLASS) {
949 if(type(_class(STK(arg1))->_metamethods[MT_NEWMEMBER]) != OT_NULL ) {
950 Push(STK(arg1)); Push(STK(arg2)); Push(STK(arg3));
951 Push((arg0&NEW_SLOT_ATTRIBUTES_FLAG) ? STK(arg2-1) : _null_);
953 if(Call(_class(STK(arg1))->_metamethods[MT_NEWMEMBER], nparams, _top - nparams, temp_reg,SQFalse)) {
959 _GUARD(NewSlot(STK(arg1), STK(arg2), STK(arg3),bstatic));
960 if((arg0&NEW_SLOT_ATTRIBUTES_FLAG)) {
961 _class(STK(arg1))->SetAttributes(STK(arg2),STK(arg2-1));
970 SQObjectPtr currerror = _lasterror;
971 // dumpstack(_stackbase);
973 SQInteger last_top = _top;
975 if(_ss(this)->_notifyallexceptions) CallErrorHandler(currerror);
979 if(ci->_etraps > 0) {
980 SQExceptionTrap &et = _etraps.top();
982 _top = et._stacksize;
983 _stackbase = et._stackbase;
984 _stack._vals[_stackbase+et._extarget] = currerror;
985 _etraps.pop_back(); traps--; ci->_etraps--;
986 while(last_top >= _top) _stack._vals[last_top--].Null();
987 goto exception_restore;
989 //if is a native closure
990 if(type(ci->_closure) != OT_CLOSURE && n)
992 if(type(ci->_generator) == OT_GENERATOR) _generator(ci->_generator)->Kill();
993 PopVarArgs(ci->_vargs);
996 } while(_callsstacksize);
1000 if(raiseerror && !_ss(this)->_notifyallexceptions)
1001 CallErrorHandler(currerror);
1003 //remove call stack until a C function is found or the cstack is empty
1005 SQBool exitafterthisone = ci->_root;
1006 if(type(ci->_generator) == OT_GENERATOR) _generator(ci->_generator)->Kill();
1007 _stackbase -= ci->_prevstkbase;
1008 _top = _stackbase + ci->_prevtop;
1009 PopVarArgs(ci->_vargs);
1011 if( (ci && type(ci->_closure) != OT_CLOSURE) || exitafterthisone) break;
1012 } while(_callsstacksize);
1014 while(last_top >= _top) _stack._vals[last_top--].Null();
1016 _lasterror = currerror;
1022 bool SQVM::CreateClassInstance(SQClass *theclass, SQObjectPtr &inst, SQObjectPtr &constructor)
1024 inst = theclass->CreateInstance();
1025 if(!theclass->Get(_ss(this)->_constructoridx,constructor)) {
1026 //if(!Call(constr,nargs,stackbase,constr,false))
1028 constructor = _null_;
1033 void SQVM::CallErrorHandler(SQObjectPtr &error)
1035 if(type(_errorhandler) != OT_NULL) {
1037 Push(_roottable); Push(error);
1038 Call(_errorhandler, 2, _top-2, out,SQFalse);
1043 void SQVM::CallDebugHook(SQInteger type,SQInteger forcedline)
1045 SQObjectPtr temp_reg;
1046 SQInteger nparams=5;
1047 SQFunctionProto *func=_funcproto(_closure(ci->_closure)->_function);
1048 Push(_roottable); Push(type); Push(func->_sourcename); Push(forcedline?forcedline:func->GetLine(ci->_ip)); Push(func->_name);
1049 Call(_debughook,nparams,_top-nparams,temp_reg,SQFalse);
1053 bool SQVM::CallNative(SQNativeClosure *nclosure,SQInteger nargs,SQInteger stackbase,SQObjectPtr &retval,bool &suspend)
1055 if (_nnativecalls + 1 > MAX_NATIVE_CALLS) { Raise_Error(_SC("Native stack overflow")); return false; }
1056 SQInteger nparamscheck = nclosure->_nparamscheck;
1057 if(((nparamscheck > 0) && (nparamscheck != nargs))
1058 || ((nparamscheck < 0) && (nargs < (-nparamscheck)))) {
1059 Raise_Error(_SC("wrong number of parameters"));
1064 if((tcs = nclosure->_typecheck.size())) {
1065 for(SQInteger i = 0; i < nargs && i < tcs; i++)
1066 if((nclosure->_typecheck._vals[i] != -1) && !(type(_stack._vals[stackbase+i]) & nclosure->_typecheck[i])) {
1067 Raise_ParamTypeError(i,nclosure->_typecheck._vals[i],type(_stack._vals[stackbase+i]));
1072 if ((_top + MIN_STACK_OVERHEAD) > (SQInteger)_stack.size()) {
1073 _stack.resize(_stack.size() + (MIN_STACK_OVERHEAD<<1));
1075 SQInteger oldtop = _top;
1076 SQInteger oldstackbase = _stackbase;
1077 _top = stackbase + nargs;
1080 lci._closure._unVal.pNativeClosure = nclosure;
1081 lci._closure._type = OT_NATIVECLOSURE;
1082 lci._prevstkbase = (SQInt32) (stackbase - _stackbase);
1084 lci._prevtop = (SQInt32) (oldtop - oldstackbase);
1085 PUSH_CALLINFO(this, lci);
1086 _stackbase = stackbase;
1087 //push free variables
1088 SQInteger outers = nclosure->_outervalues.size();
1089 for (SQInteger i = 0; i < outers; i++) {
1090 Push(nclosure->_outervalues[i]);
1093 if(type(nclosure->_env) == OT_WEAKREF) {
1094 _stack[stackbase] = _weakref(nclosure->_env)->_obj;
1098 SQInteger ret = (nclosure->_function)(this);
1101 if( ret == SQ_SUSPEND_FLAG) suspend = true;
1103 _stackbase = oldstackbase;
1106 Raise_Error(_lasterror);
1110 if (ret != 0){ retval = TOP(); }
1111 else { retval = _null_; }
1112 _stackbase = oldstackbase;
1118 bool SQVM::Get(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest,bool raw, bool fetchroot)
1122 if(_table(self)->Get(key,dest))return true;
1125 if(sq_isnumeric(key)){
1126 return _array(self)->Get(tointeger(key),dest);
1130 if(_instance(self)->Get(key,dest)) return true;
1132 default:break; //shut up compiler
1134 if(FallBackGet(self,key,dest,raw)) return true;
1137 if(_rawval(STK(0)) == _rawval(self) &&
1138 type(STK(0)) == type(self)) {
1139 return _table(_roottable)->Get(key,dest);
1145 bool SQVM::FallBackGet(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest,bool raw)
1149 return _class(self)->Get(key,dest);
1154 if(_delegable(self)->_delegate) {
1155 if(Get(SQObjectPtr(_delegable(self)->_delegate),key,dest,raw,false))
1157 if(raw)return false;
1158 Push(self);Push(key);
1159 if(CallMetaMethod(_delegable(self),MT_GET,2,dest))
1162 if(type(self) == OT_TABLE) {
1163 if(raw) return false;
1164 return _table_ddel->Get(key,dest);
1169 if(raw)return false;
1170 return _array_ddel->Get(key,dest);
1172 if(sq_isnumeric(key)){
1173 SQInteger n=tointeger(key);
1174 if(abs((int)n)<_string(self)->_len){
1175 if(n<0)n=_string(self)->_len-n;
1176 dest=SQInteger(_stringval(self)[n]);
1182 if(raw)return false;
1183 return _string_ddel->Get(key,dest);
1187 if(raw)return false;
1188 Push(self);Push(key);
1189 if(!CallMetaMethod(_delegable(self),MT_GET,2,dest)) {
1190 return _instance_ddel->Get(key,dest);
1193 case OT_INTEGER:case OT_FLOAT:case OT_BOOL:
1194 if(raw)return false;
1195 return _number_ddel->Get(key,dest);
1197 if(raw)return false;
1198 return _generator_ddel->Get(key,dest);
1199 case OT_CLOSURE: case OT_NATIVECLOSURE:
1200 if(raw)return false;
1201 return _closure_ddel->Get(key,dest);
1203 if(raw)return false;
1204 return _thread_ddel->Get(key,dest);
1206 if(raw)return false;
1207 return _weakref_ddel->Get(key,dest);
1208 default:return false;
1213 bool SQVM::Set(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val,bool fetchroot)
1217 if(_table(self)->Set(key,val))
1219 if(_table(self)->_delegate) {
1220 if(Set(_table(self)->_delegate,key,val,false)) {
1226 if(_delegable(self)->_delegate) {
1228 Push(self);Push(key);Push(val);
1229 if(CallMetaMethod(_delegable(self),MT_SET,3,t)) return true;
1233 if(_instance(self)->Set(key,val))
1236 Push(self);Push(key);Push(val);
1237 if(CallMetaMethod(_delegable(self),MT_SET,3,t)) return true;
1241 if(!sq_isnumeric(key)) {Raise_Error(_SC("indexing %s with %s"),GetTypeName(self),GetTypeName(key)); return false; }
1242 return _array(self)->Set(tointeger(key),val);
1244 Raise_Error(_SC("trying to set '%s'"),GetTypeName(self));
1248 if(_rawval(STK(0)) == _rawval(self) &&
1249 type(STK(0)) == type(self)) {
1250 return _table(_roottable)->Set(key,val);
1256 bool SQVM::Clone(const SQObjectPtr &self,SQObjectPtr &target)
1258 SQObjectPtr temp_reg;
1262 newobj = _table(self)->Clone();
1265 newobj = _instance(self)->Clone(_ss(this));
1267 if(_delegable(newobj)->_delegate){
1270 CallMetaMethod(_delegable(newobj),MT_CLONED,2,temp_reg);
1275 target = _array(self)->Clone();
1277 default: return false;
1281 bool SQVM::NewSlot(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val,bool bstatic)
1283 if(type(key) == OT_NULL) { Raise_Error(_SC("null cannot be used as index")); return false; }
1284 switch(type(self)) {
1286 bool rawcall = true;
1287 if(_table(self)->_delegate) {
1289 if(!_table(self)->Get(key,res)) {
1290 Push(self);Push(key);Push(val);
1291 rawcall = !CallMetaMethod(_table(self),MT_NEWSLOT,3,res);
1294 if(rawcall) _table(self)->NewSlot(key,val); //cannot fail
1299 Push(self);Push(key);Push(val);
1300 if(!CallMetaMethod(_instance(self),MT_NEWSLOT,3,res)) {
1301 Raise_Error(_SC("class instances do not support the new slot operator"));
1306 if(!_class(self)->NewSlot(_ss(this),key,val,bstatic)) {
1307 if(_class(self)->_locked) {
1308 Raise_Error(_SC("trying to modify a class that has already been instantiated"));
1312 SQObjectPtr oval = PrintObjVal(key);
1313 Raise_Error(_SC("the property '%s' already exists"),_stringval(oval));
1319 Raise_Error(_SC("indexing %s with %s"),GetTypeName(self),GetTypeName(key));
1326 bool SQVM::DeleteSlot(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &res)
1328 switch(type(self)) {
1333 bool handled = false;
1334 if(_delegable(self)->_delegate) {
1335 Push(self);Push(key);
1336 handled = CallMetaMethod(_delegable(self),MT_DELSLOT,2,t);
1340 if(type(self) == OT_TABLE) {
1341 if(_table(self)->Get(key,t)) {
1342 _table(self)->Remove(key);
1345 Raise_IdxError((SQObject &)key);
1350 Raise_Error(_SC("cannot delete a slot from %s"),GetTypeName(self));
1358 Raise_Error(_SC("attempt to delete a slot from a %s"),GetTypeName(self));
1364 bool SQVM::Call(SQObjectPtr &closure,SQInteger nparams,SQInteger stackbase,SQObjectPtr &outres,SQBool raiseerror)
1367 SQInteger prevstackbase = _stackbase;
1369 switch(type(closure)) {
1371 return Execute(closure, _top - nparams, nparams, stackbase,outres,raiseerror);
1373 case OT_NATIVECLOSURE:{
1375 return CallNative(_nativeclosure(closure), nparams, stackbase, outres,suspend);
1382 CreateClassInstance(_class(closure),outres,constr);
1383 if(type(constr) != OT_NULL) {
1384 _stack[stackbase] = outres;
1385 return Call(constr,nparams,stackbase,temp,raiseerror);
1395 assert(_stackbase == prevstackbase);
1401 bool SQVM::CallMetaMethod(SQDelegable *del,SQMetaMethod mm,SQInteger nparams,SQObjectPtr &outres)
1403 SQObjectPtr closure;
1404 if(del->GetMetaMethod(this, mm, closure)) {
1405 if(Call(closure, nparams, _top - nparams, outres, SQFalse)) {
1414 void SQVM::Remove(SQInteger n) {
1415 n = (n >= 0)?n + _stackbase - 1:_top + n;
1416 for(SQInteger i = n; i < _top; i++){
1417 _stack[i] = _stack[i+1];
1419 _stack[_top] = _null_;
1424 _stack[--_top] = _null_;
1427 void SQVM::Pop(SQInteger n) {
1428 for(SQInteger i = 0; i < n; i++){
1429 _stack[--_top] = _null_;
1433 void SQVM::Push(const SQObjectPtr &o) { _stack[_top++] = o; }
1434 SQObjectPtr &SQVM::Top() { return _stack[_top-1]; }
1435 SQObjectPtr &SQVM::PopGet() { return _stack[--_top]; }
1436 SQObjectPtr &SQVM::GetUp(SQInteger n) { return _stack[_top+n]; }
1437 SQObjectPtr &SQVM::GetAt(SQInteger n) { return _stack[n]; }
1440 void SQVM::dumpstack(SQInteger stackbase,bool dumpall)
1442 SQInteger size=dumpall?_stack.size():_top;
1444 scprintf(_SC("\n>>>>stack dump<<<<\n"));
1445 CallInfo &ci=_callsstack[_callsstacksize-1];
1446 scprintf(_SC("IP: %p\n"),ci._ip);
1447 scprintf(_SC("prev stack base: %d\n"),ci._prevstkbase);
1448 scprintf(_SC("prev top: %d\n"),ci._prevtop);
1449 for(SQInteger i=0;i<size;i++){
1450 SQObjectPtr &obj=_stack[i];
1451 if(stackbase==i)scprintf(_SC(">"));else scprintf(_SC(" "));
1452 scprintf(_SC("[%d]:"),n);
1454 case OT_FLOAT: scprintf(_SC("FLOAT %.3f"),_float(obj));break;
1455 case OT_INTEGER: scprintf(_SC("INTEGER %d"),_integer(obj));break;
1456 case OT_BOOL: scprintf(_SC("BOOL %s"),_integer(obj)?"true":"false");break;
1457 case OT_STRING: scprintf(_SC("STRING %s"),_stringval(obj));break;
1458 case OT_NULL: scprintf(_SC("NULL")); break;
1459 case OT_TABLE: scprintf(_SC("TABLE %p[%p]"),_table(obj),_table(obj)->_delegate);break;
1460 case OT_ARRAY: scprintf(_SC("ARRAY %p"),_array(obj));break;
1461 case OT_CLOSURE: scprintf(_SC("CLOSURE [%p]"),_closure(obj));break;
1462 case OT_NATIVECLOSURE: scprintf(_SC("NATIVECLOSURE"));break;
1463 case OT_USERDATA: scprintf(_SC("USERDATA %p[%p]"),_userdataval(obj),_userdata(obj)->_delegate);break;
1464 case OT_GENERATOR: scprintf(_SC("GENERATOR %p"),_generator(obj));break;
1465 case OT_THREAD: scprintf(_SC("THREAD [%p]"),_thread(obj));break;
1466 case OT_USERPOINTER: scprintf(_SC("USERPOINTER %p"),_userpointer(obj));break;
1467 case OT_CLASS: scprintf(_SC("CLASS %p"),_class(obj));break;
1468 case OT_INSTANCE: scprintf(_SC("INSTANCE %p"),_instance(obj));break;
1469 case OT_WEAKREF: scprintf(_SC("WEAKERF %p"),_weakref(obj));break;
1474 scprintf(_SC("\n"));