-/*
- see copyright notice in squirrel.h
-*/
-#include "sqpcheader.h"
-#include <math.h>
-#include <stdlib.h>
-#include "sqopcodes.h"
-#include "sqfuncproto.h"
-#include "sqvm.h"
-#include "sqclosure.h"
-#include "sqstring.h"
-#include "sqtable.h"
-#include "squserdata.h"
-#include "sqarray.h"
-#include "sqclass.h"
-
-#define TOP() (_stack._vals[_top-1])
-
-#define CLEARSTACK(_last_top) { if((_last_top) >= _top) ClearStack(_last_top); }
-void SQVM::ClearStack(SQInteger last_top)
-{
- SQObjectType tOldType;
- SQObjectValue unOldVal;
- while (last_top >= _top) {
- SQObjectPtr &o = _stack._vals[last_top--];
- tOldType = o._type;
- unOldVal = o._unVal;
- o._type = OT_NULL;
- o._unVal.pUserPointer = NULL;
- __Release(tOldType,unOldVal);
- }
-}
-
-bool SQVM::BW_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2)
-{
- SQInteger res;
- SQInteger i1 = _integer(o1), i2 = _integer(o2);
- if((type(o1)==OT_INTEGER) && (type(o2)==OT_INTEGER))
- {
- switch(op) {
- case BW_AND: res = i1 & i2; break;
- case BW_OR: res = i1 | i2; break;
- case BW_XOR: res = i1 ^ i2; break;
- case BW_SHIFTL: res = i1 << i2; break;
- case BW_SHIFTR: res = i1 >> i2; break;
- case BW_USHIFTR:res = (SQInteger)(*((SQUnsignedInteger*)&i1) >> i2); break;
- default: { Raise_Error(_SC("internal vm error bitwise op failed")); return false; }
- }
- }
- else { Raise_Error(_SC("bitwise op between '%s' and '%s'"),GetTypeName(o1),GetTypeName(o2)); return false;}
- trg = res;
- return true;
-}
-
-bool SQVM::ARITH_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2)
-{
- if(sq_isnumeric(o1) && sq_isnumeric(o2)) {
- if((type(o1)==OT_INTEGER) && (type(o2)==OT_INTEGER)) {
- SQInteger res, i1 = _integer(o1), i2 = _integer(o2);
- switch(op) {
- case '+': res = i1 + i2; break;
- case '-': res = i1 - i2; break;
- case '/': if(i2 == 0) { Raise_Error(_SC("division by zero")); return false; }
- res = i1 / i2;
- break;
- case '*': res = i1 * i2; break;
- case '%': if(i2 == 0) { Raise_Error(_SC("modulo by zero")); return false; }
- res = i1 % i2;
- break;
- default: res = 0xDEADBEEF;
- }
- trg = res;
- }else{
- SQFloat res, f1 = tofloat(o1), f2 = tofloat(o2);
- switch(op) {
- case '+': res = f1 + f2; break;
- case '-': res = f1 - f2; break;
- case '/': res = f1 / f2; break;
- case '*': res = f1 * f2; break;
- case '%': res = SQFloat(fmod((double)f1,(double)f2)); break;
- default: res = 0x0f;
- }
- trg = res;
- }
- } else {
- if(op == '+' && (type(o1) == OT_STRING || type(o2) == OT_STRING)){
- if(!StringCat(o1, o2, trg)) return false;
- }
- else if(!ArithMetaMethod(op,o1,o2,trg)) {
- Raise_Error(_SC("arith op %c on between '%s' and '%s'"),op,GetTypeName(o1),GetTypeName(o2)); return false;
- }
- }
- return true;
-}
-
-SQVM::SQVM(SQSharedState *ss)
-{
- _sharedstate=ss;
- _suspended = SQFalse;
- _suspended_target=-1;
- _suspended_root = SQFalse;
- _suspended_traps=-1;
- _foreignptr=NULL;
- _nnativecalls=0;
- _lasterror = _null_;
- _errorhandler = _null_;
- _debughook = _null_;
- ci = NULL;
- INIT_CHAIN();ADD_TO_CHAIN(&_ss(this)->_gc_chain,this);
-}
-
-void SQVM::Finalize()
-{
- _roottable = _null_;
- _lasterror = _null_;
- _errorhandler = _null_;
- _debughook = _null_;
- temp_reg = _null_;
- _callstackdata.resize(0);
- SQInteger size=_stack.size();
- for(SQInteger i=0;i<size;i++)
- _stack[i]=_null_;
-}
-
-SQVM::~SQVM()
-{
- Finalize();
- //sq_free(_callsstack,_alloccallsstacksize*sizeof(CallInfo));
- REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain,this);
-}
-
-bool SQVM::ArithMetaMethod(SQInteger op,const SQObjectPtr &o1,const SQObjectPtr &o2,SQObjectPtr &dest)
-{
- SQMetaMethod mm;
- switch(op){
- case _SC('+'): mm=MT_ADD; break;
- case _SC('-'): mm=MT_SUB; break;
- case _SC('/'): mm=MT_DIV; break;
- case _SC('*'): mm=MT_MUL; break;
- case _SC('%'): mm=MT_MODULO; break;
- default: mm = MT_ADD; assert(0); break; //shutup compiler
- }
- if(is_delegable(o1) && _delegable(o1)->_delegate) {
- Push(o1);Push(o2);
- return CallMetaMethod(_delegable(o1),mm,2,dest);
- }
- return false;
-}
-
-bool SQVM::NEG_OP(SQObjectPtr &trg,const SQObjectPtr &o)
-{
-
- switch(type(o)) {
- case OT_INTEGER:
- trg = -_integer(o);
- return true;
- case OT_FLOAT:
- trg = -_float(o);
- return true;
- case OT_TABLE:
- case OT_USERDATA:
- case OT_INSTANCE:
- if(_delegable(o)->_delegate) {
- Push(o);
- if(CallMetaMethod(_delegable(o), MT_UNM, 1, temp_reg)) {
- trg = temp_reg;
- return true;
- }
- }
- default:break; //shutup compiler
- }
- Raise_Error(_SC("attempt to negate a %s"), GetTypeName(o));
- return false;
-}
-
-#define _RET_SUCCEED(exp) { result = (exp); return true; }
-bool SQVM::ObjCmp(const SQObjectPtr &o1,const SQObjectPtr &o2,SQInteger &result)
-{
- if(type(o1)==type(o2)){
- if(_userpointer(o1)==_userpointer(o2))_RET_SUCCEED(0);
- SQObjectPtr res;
- switch(type(o1)){
- case OT_STRING:
- _RET_SUCCEED(scstrcmp(_stringval(o1),_stringval(o2)));
- case OT_INTEGER:
- _RET_SUCCEED(_integer(o1)-_integer(o2));
- case OT_FLOAT:
- _RET_SUCCEED((_float(o1)<_float(o2))?-1:1);
- case OT_TABLE:
- case OT_USERDATA:
- case OT_INSTANCE:
- if(_delegable(o1)->_delegate) {
- Push(o1);Push(o2);
- if(CallMetaMethod(_delegable(o1),MT_CMP,2,res)) break;
- }
- //continues through (no break needed)
- default:
- _RET_SUCCEED( _userpointer(o1) < _userpointer(o2)?-1:1 );
- }
- if(type(res)!=OT_INTEGER) { Raise_CompareError(o1,o2); return false; }
- _RET_SUCCEED(_integer(res));
-
- }
- else{
- if(sq_isnumeric(o1) && sq_isnumeric(o2)){
- if((type(o1)==OT_INTEGER) && (type(o2)==OT_FLOAT)) {
- if( _integer(o1)==_float(o2) ) { _RET_SUCCEED(0); }
- else if( _integer(o1)<_float(o2) ) { _RET_SUCCEED(-1); }
- _RET_SUCCEED(1);
- }
- else{
- if( _float(o1)==_integer(o2) ) { _RET_SUCCEED(0); }
- else if( _float(o1)<_integer(o2) ) { _RET_SUCCEED(-1); }
- _RET_SUCCEED(1);
- }
- }
- else if(type(o1)==OT_NULL) {_RET_SUCCEED(-1);}
- else if(type(o2)==OT_NULL) {_RET_SUCCEED(1);}
- else { Raise_CompareError(o1,o2); return false; }
-
- }
- assert(0);
- _RET_SUCCEED(0); //cannot happen
-}
-
-bool SQVM::CMP_OP(CmpOP op, const SQObjectPtr &o1,const SQObjectPtr &o2,SQObjectPtr &res)
-{
- SQInteger r;
- if(ObjCmp(o1,o2,r)) {
- switch(op) {
- case CMP_G: res = (r > 0)?_true_:_false_; return true;
- case CMP_GE: res = (r >= 0)?_true_:_false_; return true;
- case CMP_L: res = (r < 0)?_true_:_false_; return true;
- case CMP_LE: res = (r <= 0)?_true_:_false_; return true;
-
- }
- assert(0);
- }
- return false;
-}
-
-void SQVM::ToString(const SQObjectPtr &o,SQObjectPtr &res)
-{
- switch(type(o)) {
- case OT_STRING:
- res = o;
- return;
- case OT_FLOAT:
- scsprintf(_sp(rsl(NUMBER_MAX_CHAR+1)),_SC("%g"),_float(o));
- break;
- case OT_INTEGER:
- scsprintf(_sp(rsl(NUMBER_MAX_CHAR+1)),_SC("%d"),_integer(o));
- break;
- case OT_BOOL:
- scsprintf(_sp(rsl(6)),_integer(o)?_SC("true"):_SC("false"));
- break;
- case OT_TABLE:
- case OT_USERDATA:
- case OT_INSTANCE:
- if(_delegable(o)->_delegate) {
- Push(o);
- if(CallMetaMethod(_delegable(o),MT_TOSTRING,1,res)) {
- if(type(res) == OT_STRING)
- return;
- //else keeps going to the default
- }
- }
- default:
- scsprintf(_sp(rsl(sizeof(void*)+20)),_SC("(%s : 0x%p)"),GetTypeName(o),(void*)_rawval(o));
- }
- res = SQString::Create(_ss(this),_spval);
-}
-
-
-bool SQVM::StringCat(const SQObjectPtr &str,const SQObjectPtr &obj,SQObjectPtr &dest)
-{
- SQObjectPtr a, b;
- ToString(str, a);
- ToString(obj, b);
- SQInteger l = _string(a)->_len , ol = _string(b)->_len;
- SQChar *s = _sp(rsl(l + ol + 1));
- memcpy(s, _stringval(a), rsl(l));
- memcpy(s + l, _stringval(b), rsl(ol));
- dest = SQString::Create(_ss(this), _spval, l + ol);
- return true;
-}
-
-void SQVM::TypeOf(const SQObjectPtr &obj1,SQObjectPtr &dest)
-{
- if(is_delegable(obj1) && _delegable(obj1)->_delegate) {
- Push(obj1);
- if(CallMetaMethod(_delegable(obj1),MT_TYPEOF,1,dest))
- return;
- }
- dest = SQString::Create(_ss(this),GetTypeName(obj1));
-}
-
-bool SQVM::Init(SQVM *friendvm, SQInteger stacksize)
-{
- _stack.resize(stacksize);
- _alloccallsstacksize = 4;
- _callstackdata.resize(_alloccallsstacksize);
- _callsstacksize = 0;
- _callsstack = &_callstackdata[0];
- _stackbase = 0;
- _top = 0;
- if(!friendvm)
- _roottable = SQTable::Create(_ss(this), 0);
- else {
- _roottable = friendvm->_roottable;
- _errorhandler = friendvm->_errorhandler;
- _debughook = friendvm->_debughook;
- }
-
- sq_base_register(this);
- return true;
-}
-
-extern SQInstructionDesc g_InstrDesc[];
-
-bool SQVM::StartCall(SQClosure *closure,SQInteger target,SQInteger args,SQInteger stackbase,bool tailcall)
-{
- SQFunctionProto *func = _funcproto(closure->_function);
-
- const SQInteger paramssize = func->_nparameters;
- const SQInteger newtop = stackbase + func->_stacksize;
- SQInteger nargs = args;
- if (paramssize != nargs) {
- SQInteger ndef = func->_ndefaultparams;
- if(ndef && nargs < paramssize) {
- SQInteger diff = paramssize - nargs;
- for(SQInteger n = ndef - diff; n < ndef; n++) {
- _stack._vals[stackbase + (nargs++)] = closure->_defaultparams[n];
- }
- }
- else if(func->_varparams)
- {
- if (nargs < paramssize) {
- Raise_Error(_SC("wrong number of parameters"));
- return false;
- }
- for(SQInteger n = 0; n < nargs - paramssize; n++) {
- _vargsstack.push_back(_stack._vals[stackbase+paramssize+n]);
- _stack._vals[stackbase+paramssize+n] = _null_;
- }
- }
- else {
- Raise_Error(_SC("wrong number of parameters"));
- return false;
- }
- }
-
- if(type(closure->_env) == OT_WEAKREF) {
- _stack._vals[stackbase] = _weakref(closure->_env)->_obj;
- }
-
- if (!tailcall) {
- CallInfo lc;
- lc._generator = NULL;
- lc._etraps = 0;
- lc._prevstkbase = (SQInt32) ( stackbase - _stackbase );
- lc._target = (SQInt32) target;
- lc._prevtop = (SQInt32) (_top - _stackbase);
- lc._ncalls = 1;
- lc._root = SQFalse;
- PUSH_CALLINFO(this, lc);
- }
- else {
- ci->_ncalls++;
- }
- ci->_vargs.size = (SQInt32)(nargs - paramssize);
- ci->_vargs.base = (SQInt32)(_vargsstack.size()-(ci->_vargs.size));
- ci->_closure = closure;
- ci->_literals = func->_literals;
- ci->_ip = func->_instructions;
- //grows the stack if needed
- if (((SQUnsignedInteger)newtop + (func->_stacksize<<1)) > _stack.size()) {
- _stack.resize(_stack.size() + (func->_stacksize<<1));
- }
-
- _top = newtop;
- _stackbase = stackbase;
- if (type(_debughook) != OT_NULL && _rawval(_debughook) != _rawval(ci->_closure))
- CallDebugHook(_SC('c'));
- return true;
-}
-
-bool SQVM::Return(SQInteger _arg0, SQInteger _arg1, SQObjectPtr &retval)
-{
- if (type(_debughook) != OT_NULL && _rawval(_debughook) != _rawval(ci->_closure))
- for(SQInteger i=0;i<ci->_ncalls;i++)
- CallDebugHook(_SC('r'));
-
- SQBool broot = ci->_root;
- SQInteger last_top = _top;
- SQInteger target = ci->_target;
- SQInteger oldstackbase = _stackbase;
- _stackbase -= ci->_prevstkbase;
- _top = _stackbase + ci->_prevtop;
- if(ci->_vargs.size) PopVarArgs(ci->_vargs);
- POP_CALLINFO(this);
- if (broot) {
- if (_arg0 != MAX_FUNC_STACKSIZE) retval = _stack._vals[oldstackbase+_arg1];
- else retval = _null_;
- }
- else {
- if(target != -1) { //-1 is when a class contructor ret value has to be ignored
- if (_arg0 != MAX_FUNC_STACKSIZE)
- STK(target) = _stack._vals[oldstackbase+_arg1];
- else
- STK(target) = _null_;
- }
- }
-
- CLEARSTACK(last_top);
- assert(oldstackbase >= _stackbase);
- return broot?true:false;
-}
-
-#define _RET_ON_FAIL(exp) { if(!exp) return false; }
-
-bool SQVM::LOCAL_INC(SQInteger op,SQObjectPtr &target, SQObjectPtr &a, SQObjectPtr &incr)
-{
- _RET_ON_FAIL(ARITH_OP( op , target, a, incr));
- a = target;
- return true;
-}
-
-bool SQVM::PLOCAL_INC(SQInteger op,SQObjectPtr &target, SQObjectPtr &a, SQObjectPtr &incr)
-{
- SQObjectPtr trg;
- _RET_ON_FAIL(ARITH_OP( op , trg, a, incr));
- target = a;
- a = trg;
- return true;
-}
-
-bool SQVM::DerefInc(SQInteger op,SQObjectPtr &target, SQObjectPtr &self, SQObjectPtr &key, SQObjectPtr &incr, bool postfix)
-{
- SQObjectPtr tmp, tself = self, tkey = key;
- if (!Get(tself, tkey, tmp, false, true)) { Raise_IdxError(tkey); return false; }
- _RET_ON_FAIL(ARITH_OP( op , target, tmp, incr))
- Set(tself, tkey, target,true);
- if (postfix) target = tmp;
- return true;
-}
-
-#define arg0 (_i_._arg0)
-#define arg1 (_i_._arg1)
-#define sarg1 (*((SQInt32 *)&_i_._arg1))
-#define arg2 (_i_._arg2)
-#define arg3 (_i_._arg3)
-#define sarg3 ((SQInteger)*((signed char *)&_i_._arg3))
-
-SQRESULT SQVM::Suspend()
-{
- if (_suspended)
- return sq_throwerror(this, _SC("cannot suspend an already suspended vm"));
- if (_nnativecalls!=2)
- return sq_throwerror(this, _SC("cannot suspend through native calls/metamethods"));
- return SQ_SUSPEND_FLAG;
-}
-
-void SQVM::PopVarArgs(VarArgs &vargs)
-{
- for(SQInteger n = 0; n< vargs.size; n++)
- _vargsstack.pop_back();
-}
-
-#define _FINISH(howmuchtojump) {jump = howmuchtojump; return true; }
-bool SQVM::FOREACH_OP(SQObjectPtr &o1,SQObjectPtr &o2,SQObjectPtr
-&o3,SQObjectPtr &o4,SQInteger arg_2,int exitpos,int &jump)
-{
- SQInteger nrefidx;
- switch(type(o1)) {
- case OT_TABLE:
- if((nrefidx = _table(o1)->Next(false,o4, o2, o3)) == -1) _FINISH(exitpos);
- o4 = (SQInteger)nrefidx; _FINISH(1);
- case OT_ARRAY:
- if((nrefidx = _array(o1)->Next(o4, o2, o3)) == -1) _FINISH(exitpos);
- o4 = (SQInteger) nrefidx; _FINISH(1);
- case OT_STRING:
- if((nrefidx = _string(o1)->Next(o4, o2, o3)) == -1)_FINISH(exitpos);
- o4 = (SQInteger)nrefidx; _FINISH(1);
- case OT_CLASS:
- if((nrefidx = _class(o1)->Next(o4, o2, o3)) == -1)_FINISH(exitpos);
- o4 = (SQInteger)nrefidx; _FINISH(1);
- case OT_USERDATA:
- case OT_INSTANCE:
- if(_delegable(o1)->_delegate) {
- SQObjectPtr itr;
- Push(o1);
- Push(o4);
- if(CallMetaMethod(_delegable(o1), MT_NEXTI, 2, itr)){
- o4 = o2 = itr;
- if(type(itr) == OT_NULL) _FINISH(exitpos);
- if(!Get(o1, itr, o3, false,false)) {
- Raise_Error(_SC("_nexti returned an invalid idx"));
- return false;
- }
- _FINISH(1);
- }
- Raise_Error(_SC("_nexti failed"));
- return false;
- }
- break;
- case OT_GENERATOR:
- if(_generator(o1)->_state == SQGenerator::eDead) _FINISH(exitpos);
- if(_generator(o1)->_state == SQGenerator::eSuspended) {
- SQInteger idx = 0;
- if(type(o4) == OT_INTEGER) {
- idx = _integer(o4) + 1;
- }
- o2 = idx;
- o4 = idx;
- _generator(o1)->Resume(this, arg_2+1);
- _FINISH(0);
- }
- default:
- Raise_Error(_SC("cannot iterate %s"), GetTypeName(o1));
- }
- return false; //cannot be hit(just to avoid warnings)
-}
-
-bool SQVM::DELEGATE_OP(SQObjectPtr &trg,SQObjectPtr &o1,SQObjectPtr &o2)
-{
- if(type(o1) != OT_TABLE) { Raise_Error(_SC("delegating a '%s'"), GetTypeName(o1)); return false; }
- switch(type(o2)) {
- case OT_TABLE:
- if(!_table(o1)->SetDelegate(_table(o2))){
- Raise_Error(_SC("delegate cycle detected"));
- return false;
- }
- break;
- case OT_NULL:
- _table(o1)->SetDelegate(NULL);
- break;
- default:
- Raise_Error(_SC("using '%s' as delegate"), GetTypeName(o2));
- return false;
- break;
- }
- trg = o1;
- return true;
-}
-#define COND_LITERAL (arg3!=0?ci->_literals[arg1]:STK(arg1))
-
-#define _GUARD(exp) { if(!exp) { Raise_Error(_lasterror); SQ_THROW();} }
-
-#define SQ_THROW() { goto exception_trap; }
-
-bool SQVM::CLOSURE_OP(SQObjectPtr &target, SQFunctionProto *func)
-{
- SQInteger nouters;
- SQClosure *closure = SQClosure::Create(_ss(this), func);
- if((nouters = func->_noutervalues)) {
- closure->_outervalues.reserve(nouters);
- for(SQInteger i = 0; i<nouters; i++) {
- SQOuterVar &v = func->_outervalues[i];
- switch(v._type){
- case otSYMBOL:
- closure->_outervalues.push_back(_null_);
- if(!Get(_stack._vals[_stackbase]/*STK(0)*/, v._src, closure->_outervalues.top(), false,true))
- {Raise_IdxError(v._src); return false; }
- break;
- case otLOCAL:
- closure->_outervalues.push_back(_stack._vals[_stackbase+_integer(v._src)]);
- break;
- case otOUTER:
- closure->_outervalues.push_back(_closure(ci->_closure)->_outervalues[_integer(v._src)]);
- break;
- }
- }
- }
- SQInteger ndefparams;
- if((ndefparams = func->_ndefaultparams)) {
- closure->_defaultparams.reserve(ndefparams);
- for(SQInteger i = 0; i < ndefparams; i++) {
- SQInteger spos = func->_defaultparams[i];
- closure->_defaultparams.push_back(_stack._vals[_stackbase + spos]);
- }
- }
- target = closure;
- return true;
-
-}
-
-bool SQVM::GETVARGV_OP(SQObjectPtr &target,SQObjectPtr &index,CallInfo *ci)
-{
- if(ci->_vargs.size == 0) {
- Raise_Error(_SC("the function doesn't have var args"));
- return false;
- }
- if(!sq_isnumeric(index)){
- Raise_Error(_SC("indexing 'vargv' with %s"),GetTypeName(index));
- return false;
- }
- SQInteger idx = tointeger(index);
- if(idx < 0 || idx >= ci->_vargs.size){ Raise_Error(_SC("vargv index out of range")); return false; }
- target = _vargsstack[ci->_vargs.base+idx];
- return true;
-}
-
-bool SQVM::CLASS_OP(SQObjectPtr &target,SQInteger baseclass,SQInteger attributes)
-{
- SQClass *base = NULL;
- SQObjectPtr attrs;
- if(baseclass != -1) {
- if(type(_stack._vals[_stackbase+baseclass]) != OT_CLASS) { Raise_Error(_SC("trying to inherit from a %s"),GetTypeName(_stack._vals[_stackbase+baseclass])); return false; }
- base = _class(_stack._vals[_stackbase + baseclass]);
- }
- if(attributes != MAX_FUNC_STACKSIZE) {
- attrs = _stack._vals[_stackbase+attributes];
- }
- target = SQClass::Create(_ss(this),base);
- if(type(_class(target)->_metamethods[MT_INHERITED]) != OT_NULL) {
- int nparams = 2;
- SQObjectPtr ret;
- Push(target); Push(attrs);
- Call(_class(target)->_metamethods[MT_INHERITED],nparams,_top - nparams, ret, false);
- Pop(nparams);
- }
- _class(target)->_attributes = attrs;
- return true;
-}
-
-
-
-bool SQVM::IsEqual(SQObjectPtr &o1,SQObjectPtr &o2,bool &res)
-{
- if(type(o1) == type(o2)) {
- res = ((_userpointer(o1) == _userpointer(o2)?true:false));
- }
- else {
- if(sq_isnumeric(o1) && sq_isnumeric(o2)) {
- SQInteger cmpres;
- if(!ObjCmp(o1, o2,cmpres)) return false;
- res = (cmpres == 0);
- }
- else {
- res = false;
- }
- }
- return true;
-}
-
-bool SQVM::IsFalse(SQObjectPtr &o)
-{
- if((type(o) & SQOBJECT_CANBEFALSE) && ( (type(o) == OT_FLOAT) && (_float(o) == SQFloat(0.0)) )
- || (_integer(o) == 0) ) { //OT_NULL|OT_INTEGER|OT_BOOL
- return true;
- }
- return false;
-}
-
-bool SQVM::GETPARENT_OP(SQObjectPtr &o,SQObjectPtr &target)
-{
- switch(type(o)) {
- case OT_TABLE: target = _table(o)->_delegate?SQObjectPtr(_table(o)->_delegate):_null_;
- break;
- case OT_CLASS: target = _class(o)->_base?_class(o)->_base:_null_;
- break;
- default:
- Raise_Error(_SC("the %s type doesn't have a parent slot"), GetTypeName(o));
- return false;
- }
- return true;
-}
-
-bool SQVM::Execute(SQObjectPtr &closure, SQInteger target, SQInteger nargs, SQInteger stackbase,SQObjectPtr &outres, SQBool raiseerror,ExecutionType et)
-{
- if ((_nnativecalls + 1) > MAX_NATIVE_CALLS) { Raise_Error(_SC("Native stack overflow")); return false; }
- _nnativecalls++;
- AutoDec ad(&_nnativecalls);
- SQInteger traps = 0;
- //temp_reg vars for OP_CALL
- SQInteger ct_target;
- SQInteger ct_stackbase;
- bool ct_tailcall;
-
- switch(et) {
- case ET_CALL: {
- SQInteger last_top = _top;
- temp_reg = closure;
- if(!StartCall(_closure(temp_reg), _top - nargs, nargs, stackbase, false)) {
- //call the handler if there are no calls in the stack, if not relies on the previous node
- if(ci == NULL) CallErrorHandler(_lasterror);
- return false;
- }
- if (_funcproto(_closure(temp_reg)->_function)->_bgenerator) {
- SQFunctionProto *f = _funcproto(_closure(temp_reg)->_function);
- SQGenerator *gen = SQGenerator::Create(_ss(this), _closure(temp_reg));
- _GUARD(gen->Yield(this));
- Return(1, ci->_target, temp_reg);
- outres = gen;
- CLEARSTACK(last_top);
- return true;
- }
- ci->_root = SQTrue;
- }
- break;
- case ET_RESUME_GENERATOR: _generator(closure)->Resume(this, target); ci->_root = SQTrue; traps += ci->_etraps; break;
- case ET_RESUME_VM:
- case ET_RESUME_THROW_VM:
- traps = _suspended_traps;
- ci->_root = _suspended_root;
- ci->_vargs = _suspend_varargs;
- _suspended = SQFalse;
- if(et == ET_RESUME_THROW_VM) { SQ_THROW(); }
- break;
- }
-
-exception_restore:
- //
- {
- for(;;)
- {
- const SQInstruction &_i_ = *ci->_ip++;
- //dumpstack(_stackbase);
- //scprintf("\n[%d] %s %d %d %d %d\n",ci->_ip-ci->_iv->_vals,g_InstrDesc[_i_.op].name,arg0,arg1,arg2,arg3);
- switch(_i_.op)
- {
- case _OP_LINE:
- if(type(_debughook) != OT_NULL && _rawval(_debughook) != _rawval(ci->_closure))
- CallDebugHook(_SC('l'),arg1);
- continue;
- case _OP_LOAD: TARGET = ci->_literals[arg1]; continue;
- case _OP_LOADINT: TARGET = (SQInteger)arg1; continue;
- case _OP_LOADFLOAT: TARGET = *((SQFloat *)&arg1); continue;
- case _OP_DLOAD: TARGET = ci->_literals[arg1]; STK(arg2) = ci->_literals[arg3];continue;
- case _OP_TAILCALL:
- temp_reg = STK(arg1);
- if (type(temp_reg) == OT_CLOSURE && !_funcproto(_closure(temp_reg)->_function)->_bgenerator){
- ct_tailcall = true;
- if(ci->_vargs.size) PopVarArgs(ci->_vargs);
- for (SQInteger i = 0; i < arg3; i++) STK(i) = STK(arg2 + i);
- ct_target = ci->_target;
- ct_stackbase = _stackbase;
- goto common_call;
- }
- case _OP_CALL: {
- ct_tailcall = false;
- ct_target = arg0;
- temp_reg = STK(arg1);
- ct_stackbase = _stackbase+arg2;
-
-common_call:
- SQObjectPtr clo = temp_reg;
- SQInteger last_top = _top;
- switch (type(clo)) {
- case OT_CLOSURE:{
- _GUARD(StartCall(_closure(clo), ct_target, arg3, ct_stackbase, ct_tailcall));
- if (_funcproto(_closure(clo)->_function)->_bgenerator) {
- SQGenerator *gen = SQGenerator::Create(_ss(this), _closure(clo));
- _GUARD(gen->Yield(this));
- Return(1, ct_target, clo);
- STK(ct_target) = gen;
- CLEARSTACK(last_top);
- continue;
- }
- }
- continue;
- case OT_NATIVECLOSURE: {
- bool suspend;
- _GUARD(CallNative(_nativeclosure(clo), arg3, ct_stackbase, clo,suspend));
- if(suspend){
- _suspended = SQTrue;
- _suspended_target = ct_target;
- _suspended_root = ci->_root;
- _suspended_traps = traps;
- _suspend_varargs = ci->_vargs;
- outres = clo;
- return true;
- }
- if(ct_target != -1) { //skip return value for constructors
- STK(ct_target) = clo;
- }
- }
- continue;
- case OT_CLASS:{
- SQObjectPtr inst;
- _GUARD(CreateClassInstance(_class(clo),inst,temp_reg));
- STK(ct_target) = inst;
- ct_target = -1; //fakes return value target so that is not overwritten by the constructor
- if(type(temp_reg) != OT_NULL) {
- _stack._vals[ct_stackbase] = inst;
- goto common_call; //hard core spaghetti code(reissues the OP_CALL to invoke the constructor)
- }
- }
- break;
- case OT_TABLE:
- case OT_USERDATA:
- case OT_INSTANCE:
- {
- Push(clo);
- for (SQInteger i = 0; i < arg3; i++) Push(STK(arg2 + i));
- if (_delegable(clo) && CallMetaMethod(_delegable(clo), MT_CALL, arg3+1, clo)){
- STK(ct_target) = clo;
- break;
- }
- Raise_Error(_SC("attempt to call '%s'"), GetTypeName(clo));
- SQ_THROW();
- }
- default:
- Raise_Error(_SC("attempt to call '%s'"), GetTypeName(clo));
- SQ_THROW();
- }
- }
- continue;
- case _OP_PREPCALL:
- case _OP_PREPCALLK:
- {
- SQObjectPtr &key = _i_.op == _OP_PREPCALLK?(ci->_literals)[arg1]:STK(arg1);
- SQObjectPtr &o = STK(arg2);
- if (!Get(o, key, temp_reg,false,true)) {
- if(type(o) == OT_CLASS) { //hack?
- if(_class_ddel->Get(key,temp_reg)) {
- STK(arg3) = o;
- TARGET = temp_reg;
- continue;
- }
- }
- { Raise_IdxError(key); SQ_THROW();}
- }
-
- STK(arg3) = type(o) == OT_CLASS?STK(0):o;
- TARGET = temp_reg;
- }
- continue;
- case _OP_GETK:
- if (!Get(STK(arg2), ci->_literals[arg1], temp_reg, false,true)) { Raise_IdxError(ci->_literals[arg1]); SQ_THROW();}
- TARGET = temp_reg;
- continue;
- case _OP_MOVE: TARGET = STK(arg1); continue;
- case _OP_NEWSLOT:
- _GUARD(NewSlot(STK(arg1), STK(arg2), STK(arg3),false));
- if(arg0 != arg3) TARGET = STK(arg3);
- continue;
- case _OP_DELETE: _GUARD(DeleteSlot(STK(arg1), STK(arg2), TARGET)); continue;
- case _OP_SET:
- if (!Set(STK(arg1), STK(arg2), STK(arg3),true)) { Raise_IdxError(STK(arg2)); SQ_THROW(); }
- if (arg0 != arg3) TARGET = STK(arg3);
- continue;
- case _OP_GET:
- if (!Get(STK(arg1), STK(arg2), temp_reg, false,true)) { Raise_IdxError(STK(arg2)); SQ_THROW(); }
- TARGET = temp_reg;
- continue;
- case _OP_EQ:{
- bool res;
- if(!IsEqual(STK(arg2),COND_LITERAL,res)) { SQ_THROW(); }
- TARGET = res?_true_:_false_;
- }continue;
- case _OP_NE:{
- bool res;
- if(!IsEqual(STK(arg2),COND_LITERAL,res)) { SQ_THROW(); }
- TARGET = (!res)?_true_:_false_;
- } continue;
- case _OP_ARITH: _GUARD(ARITH_OP( arg3 , temp_reg, STK(arg2), STK(arg1))); TARGET = temp_reg; continue;
- case _OP_BITW: _GUARD(BW_OP( arg3,TARGET,STK(arg2),STK(arg1))); continue;
- case _OP_RETURN:
- if(ci->_generator) {
- ci->_generator->Kill();
- }
- if(Return(arg0, arg1, temp_reg)){
- assert(traps==0);
- outres = temp_reg;
- return true;
- }
- continue;
- case _OP_LOADNULLS:{ for(SQInt32 n=0; n < arg1; n++) STK(arg0+n) = _null_; }continue;
- case _OP_LOADROOTTABLE: TARGET = _roottable; continue;
- case _OP_LOADBOOL: TARGET = arg1?_true_:_false_; continue;
- case _OP_DMOVE: STK(arg0) = STK(arg1); STK(arg2) = STK(arg3); continue;
- case _OP_JMP: ci->_ip += (sarg1); continue;
- case _OP_JNZ: if(!IsFalse(STK(arg0))) ci->_ip+=(sarg1); continue;
- case _OP_JZ: if(IsFalse(STK(arg0))) ci->_ip+=(sarg1); continue;
- case _OP_LOADFREEVAR: TARGET = _closure(ci->_closure)->_outervalues[arg1]; continue;
- case _OP_VARGC: TARGET = SQInteger(ci->_vargs.size); continue;
- case _OP_GETVARGV:
- if(!GETVARGV_OP(TARGET,STK(arg1),ci)) { SQ_THROW(); }
- continue;
- case _OP_NEWTABLE: TARGET = SQTable::Create(_ss(this), arg1); continue;
- case _OP_NEWARRAY: TARGET = SQArray::Create(_ss(this), 0); _array(TARGET)->Reserve(arg1); continue;
- case _OP_APPENDARRAY: _array(STK(arg0))->Append(COND_LITERAL); continue;
- case _OP_GETPARENT: _GUARD(GETPARENT_OP(STK(arg1),TARGET)); continue;
- case _OP_COMPARITH: _GUARD(DerefInc(arg3, TARGET, STK((((SQUnsignedInteger)arg1&0xFFFF0000)>>16)), STK(arg2), STK(arg1&0x0000FFFF), false)); continue;
- case _OP_COMPARITHL: _GUARD(LOCAL_INC(arg3, TARGET, STK(arg1), STK(arg2))); continue;
- case _OP_INC: {SQObjectPtr o(sarg3); _GUARD(DerefInc('+',TARGET, STK(arg1), STK(arg2), o, false));} continue;
- case _OP_INCL: {SQObjectPtr o(sarg3); _GUARD(LOCAL_INC('+',TARGET, STK(arg1), o));} continue;
- case _OP_PINC: {SQObjectPtr o(sarg3); _GUARD(DerefInc('+',TARGET, STK(arg1), STK(arg2), o, true));} continue;
- case _OP_PINCL: {SQObjectPtr o(sarg3); _GUARD(PLOCAL_INC('+',TARGET, STK(arg1), o));} continue;
- case _OP_CMP: _GUARD(CMP_OP((CmpOP)arg3,STK(arg2),STK(arg1),TARGET)) continue;
- case _OP_EXISTS: TARGET = Get(STK(arg1), STK(arg2), temp_reg, true,false)?_true_:_false_;continue;
- case _OP_INSTANCEOF:
- if(type(STK(arg1)) != OT_CLASS || type(STK(arg2)) != OT_INSTANCE)
- {Raise_Error(_SC("cannot apply instanceof between a %s and a %s"),GetTypeName(STK(arg1)),GetTypeName(STK(arg2))); SQ_THROW();}
- TARGET = _instance(STK(arg2))->InstanceOf(_class(STK(arg1)))?_true_:_false_;
- continue;
- case _OP_AND:
- if(IsFalse(STK(arg2))) {
- TARGET = STK(arg2);
- ci->_ip += (sarg1);
- }
- continue;
- case _OP_OR:
- if(!IsFalse(STK(arg2))) {
- TARGET = STK(arg2);
- ci->_ip += (sarg1);
- }
- continue;
- case _OP_NEG: _GUARD(NEG_OP(TARGET,STK(arg1))); continue;
- case _OP_NOT: TARGET = (IsFalse(STK(arg1))?_true_:_false_); continue;
- case _OP_BWNOT:
- if(type(STK(arg1)) == OT_INTEGER) {
- SQInteger t = _integer(STK(arg1));
- TARGET = SQInteger(~t);
- continue;
- }
- Raise_Error(_SC("attempt to perform a bitwise op on a %s"), GetTypeName(STK(arg1)));
- SQ_THROW();
- case _OP_CLOSURE: {
- SQClosure *c = ci->_closure._unVal.pClosure;
- SQFunctionProto *fp = c->_function._unVal.pFunctionProto;
- if(!CLOSURE_OP(TARGET,fp->_functions[arg1]._unVal.pFunctionProto)) { SQ_THROW(); }
- continue;
- }
- case _OP_YIELD:{
- if(ci->_generator) {
- if(sarg1 != MAX_FUNC_STACKSIZE) temp_reg = STK(arg1);
- _GUARD(ci->_generator->Yield(this));
- traps -= ci->_etraps;
- if(sarg1 != MAX_FUNC_STACKSIZE) STK(arg1) = temp_reg;
- }
- else { Raise_Error(_SC("trying to yield a '%s',only genenerator can be yielded"), GetTypeName(ci->_generator)); SQ_THROW();}
- if(Return(arg0, arg1, temp_reg)){
- assert(traps == 0);
- outres = temp_reg;
- return true;
- }
-
- }
- continue;
- case _OP_RESUME:
- if(type(STK(arg1)) != OT_GENERATOR){ Raise_Error(_SC("trying to resume a '%s',only genenerator can be resumed"), GetTypeName(STK(arg1))); SQ_THROW();}
- _GUARD(_generator(STK(arg1))->Resume(this, arg0));
- traps += ci->_etraps;
- continue;
- case _OP_FOREACH:{ int tojump;
- _GUARD(FOREACH_OP(STK(arg0),STK(arg2),STK(arg2+1),STK(arg2+2),arg2,sarg1,tojump));
- ci->_ip += tojump; }
- continue;
- case _OP_POSTFOREACH:
- assert(type(STK(arg0)) == OT_GENERATOR);
- if(_generator(STK(arg0))->_state == SQGenerator::eDead)
- ci->_ip += (sarg1 - 1);
- continue;
- case _OP_DELEGATE: _GUARD(DELEGATE_OP(TARGET,STK(arg1),STK(arg2))); continue;
- case _OP_CLONE:
- if(!Clone(STK(arg1), TARGET))
- { Raise_Error(_SC("cloning a %s"), GetTypeName(STK(arg1))); SQ_THROW();}
- continue;
- case _OP_TYPEOF: TypeOf(STK(arg1), TARGET); continue;
- case _OP_PUSHTRAP:{
- SQInstruction *_iv = _funcproto(_closure(ci->_closure)->_function)->_instructions;
- _etraps.push_back(SQExceptionTrap(_top,_stackbase, &_iv[(ci->_ip-_iv)+arg1], arg0)); traps++;
- ci->_etraps++;
- }
- continue;
- case _OP_POPTRAP: {
- for(SQInteger i = 0; i < arg0; i++) {
- _etraps.pop_back(); traps--;
- ci->_etraps--;
- }
- }
- continue;
- case _OP_THROW: Raise_Error(TARGET); SQ_THROW(); continue;
- case _OP_CLASS: _GUARD(CLASS_OP(TARGET,arg1,arg2)); continue;
- case _OP_NEWSLOTA:
- bool bstatic = (arg0&NEW_SLOT_STATIC_FLAG)?true:false;
- if(type(STK(arg1)) == OT_CLASS) {
- if(type(_class(STK(arg1))->_metamethods[MT_NEWMEMBER]) != OT_NULL ) {
- Push(STK(arg1)); Push(STK(arg2)); Push(STK(arg3));
- Push((arg0&NEW_SLOT_ATTRIBUTES_FLAG) ? STK(arg2-1) : _null_);
- int nparams = 4;
- if(Call(_class(STK(arg1))->_metamethods[MT_NEWMEMBER], nparams, _top - nparams, temp_reg,SQFalse)) {
- Pop(nparams);
- continue;
- }
- }
- }
- _GUARD(NewSlot(STK(arg1), STK(arg2), STK(arg3),bstatic));
- if((arg0&NEW_SLOT_ATTRIBUTES_FLAG)) {
- _class(STK(arg1))->SetAttributes(STK(arg2),STK(arg2-1));
- }
- continue;
- }
-
- }
- }
-exception_trap:
- {
- SQObjectPtr currerror = _lasterror;
-// dumpstack(_stackbase);
- SQInteger n = 0;
- SQInteger last_top = _top;
- if(ci) {
- if(_ss(this)->_notifyallexceptions) CallErrorHandler(currerror);
-
- if(traps) {
- do {
- if(ci->_etraps > 0) {
- SQExceptionTrap &et = _etraps.top();
- ci->_ip = et._ip;
- _top = et._stacksize;
- _stackbase = et._stackbase;
- _stack._vals[_stackbase+et._extarget] = currerror;
- _etraps.pop_back(); traps--; ci->_etraps--;
- CLEARSTACK(last_top);
- goto exception_restore;
- }
- //if is a native closure
- if(type(ci->_closure) != OT_CLOSURE && n)
- break;
- if(ci->_generator) ci->_generator->Kill();
- PopVarArgs(ci->_vargs);
- POP_CALLINFO(this);
- n++;
- } while(_callsstacksize);
- }
- else {
- //call the hook
- if(raiseerror && !_ss(this)->_notifyallexceptions)
- CallErrorHandler(currerror);
- }
- //remove call stack until a C function is found or the cstack is empty
- if(ci) do {
- SQBool exitafterthisone = ci->_root;
- if(ci->_generator) ci->_generator->Kill();
- _stackbase -= ci->_prevstkbase;
- _top = _stackbase + ci->_prevtop;
- PopVarArgs(ci->_vargs);
- POP_CALLINFO(this);
- if( (ci && type(ci->_closure) != OT_CLOSURE) || exitafterthisone) break;
- } while(_callsstacksize);
-
- CLEARSTACK(last_top);
- }
- _lasterror = currerror;
- return false;
- }
- assert(0);
-}
-
-bool SQVM::CreateClassInstance(SQClass *theclass, SQObjectPtr &inst, SQObjectPtr &constructor)
-{
- inst = theclass->CreateInstance();
- if(!theclass->Get(_ss(this)->_constructoridx,constructor)) {
- constructor = _null_;
- }
- return true;
-}
-
-void SQVM::CallErrorHandler(SQObjectPtr &error)
-{
- if(type(_errorhandler) != OT_NULL) {
- SQObjectPtr out;
- Push(_roottable); Push(error);
- Call(_errorhandler, 2, _top-2, out,SQFalse);
- Pop(2);
- }
-}
-
-void SQVM::CallDebugHook(SQInteger type,SQInteger forcedline)
-{
- SQObjectPtr temp_reg;
- SQInteger nparams=5;
- SQFunctionProto *func=_funcproto(_closure(ci->_closure)->_function);
- Push(_roottable); Push(type); Push(func->_sourcename); Push(forcedline?forcedline:func->GetLine(ci->_ip)); Push(func->_name);
- Call(_debughook,nparams,_top-nparams,temp_reg,SQFalse);
- Pop(nparams);
-}
-
-bool SQVM::CallNative(SQNativeClosure *nclosure,SQInteger nargs,SQInteger stackbase,SQObjectPtr &retval,bool &suspend)
-{
- if (_nnativecalls + 1 > MAX_NATIVE_CALLS) { Raise_Error(_SC("Native stack overflow")); return false; }
- SQInteger nparamscheck = nclosure->_nparamscheck;
- if(((nparamscheck > 0) && (nparamscheck != nargs))
- || ((nparamscheck < 0) && (nargs < (-nparamscheck)))) {
- Raise_Error(_SC("wrong number of parameters"));
- return false;
- }
-
- SQInteger tcs;
- if((tcs = nclosure->_typecheck.size())) {
- for(SQInteger i = 0; i < nargs && i < tcs; i++)
- if((nclosure->_typecheck._vals[i] != -1) && !(type(_stack._vals[stackbase+i]) & nclosure->_typecheck[i])) {
- Raise_ParamTypeError(i,nclosure->_typecheck._vals[i],type(_stack._vals[stackbase+i]));
- return false;
- }
- }
- _nnativecalls++;
- if ((_top + MIN_STACK_OVERHEAD) > (SQInteger)_stack.size()) {
- _stack.resize(_stack.size() + (MIN_STACK_OVERHEAD<<1));
- }
- SQInteger oldtop = _top;
- SQInteger oldstackbase = _stackbase;
- _top = stackbase + nargs;
- CallInfo lci;
- lci._closure = nclosure;
- lci._generator = NULL;
- lci._etraps = 0;
- lci._prevstkbase = (SQInt32) (stackbase - _stackbase);
- lci._ncalls = 1;
- lci._prevtop = (SQInt32) (oldtop - oldstackbase);
- PUSH_CALLINFO(this, lci);
- _stackbase = stackbase;
- //push free variables
- SQInteger outers = nclosure->_outervalues.size();
- for (SQInteger i = 0; i < outers; i++) {
- Push(nclosure->_outervalues[i]);
- }
-
- if(type(nclosure->_env) == OT_WEAKREF) {
- _stack[stackbase] = _weakref(nclosure->_env)->_obj;
- }
-
-
- SQInteger ret = (nclosure->_function)(this);
- _nnativecalls--;
- suspend = false;
- if( ret == SQ_SUSPEND_FLAG) suspend = true;
- else if (ret < 0) {
- _stackbase = oldstackbase;
- _top = oldtop;
- POP_CALLINFO(this);
- Raise_Error(_lasterror);
- return false;
- }
-
- if (ret != 0){ retval = TOP(); TOP().Null(); }
- else { retval = _null_; }
- _stackbase = oldstackbase;
- _top = oldtop;
- POP_CALLINFO(this);
- return true;
-}
-
-bool SQVM::Get(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest,bool raw, bool fetchroot)
-{
- switch(type(self)){
- case OT_TABLE:
- if(_table(self)->Get(key,dest))return true;
- break;
- case OT_ARRAY:
- if(sq_isnumeric(key)){
- return _array(self)->Get(tointeger(key),dest);
- }
- break;
- case OT_INSTANCE:
- if(_instance(self)->Get(key,dest)) return true;
- break;
- default:break; //shut up compiler
- }
- if(FallBackGet(self,key,dest,raw)) return true;
-
- if(fetchroot) {
- if(_rawval(STK(0)) == _rawval(self) &&
- type(STK(0)) == type(self)) {
- return _table(_roottable)->Get(key,dest);
- }
- }
- return false;
-}
-
-bool SQVM::FallBackGet(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest,bool raw)
-{
- switch(type(self)){
- case OT_CLASS:
- return _class(self)->Get(key,dest);
- break;
- case OT_TABLE:
- case OT_USERDATA:
- //delegation
- if(_delegable(self)->_delegate) {
- if(Get(SQObjectPtr(_delegable(self)->_delegate),key,dest,raw,false))
- return true;
- if(raw)return false;
- Push(self);Push(key);
- if(CallMetaMethod(_delegable(self),MT_GET,2,dest))
- return true;
- }
- if(type(self) == OT_TABLE) {
- if(raw) return false;
- return _table_ddel->Get(key,dest);
- }
- return false;
- break;
- case OT_ARRAY:
- if(raw)return false;
- return _array_ddel->Get(key,dest);
- case OT_STRING:
- if(sq_isnumeric(key)){
- SQInteger n=tointeger(key);
- if(abs((int)n)<_string(self)->_len){
- if(n<0)n=_string(self)->_len-n;
- dest=SQInteger(_stringval(self)[n]);
- return true;
- }
- return false;
- }
- else {
- if(raw)return false;
- return _string_ddel->Get(key,dest);
- }
- break;
- case OT_INSTANCE:
- if(raw)return false;
- Push(self);Push(key);
- if(!CallMetaMethod(_delegable(self),MT_GET,2,dest)) {
- return _instance_ddel->Get(key,dest);
- }
- return true;
- case OT_INTEGER:case OT_FLOAT:case OT_BOOL:
- if(raw)return false;
- return _number_ddel->Get(key,dest);
- case OT_GENERATOR:
- if(raw)return false;
- return _generator_ddel->Get(key,dest);
- case OT_CLOSURE: case OT_NATIVECLOSURE:
- if(raw)return false;
- return _closure_ddel->Get(key,dest);
- case OT_THREAD:
- if(raw)return false;
- return _thread_ddel->Get(key,dest);
- case OT_WEAKREF:
- if(raw)return false;
- return _weakref_ddel->Get(key,dest);
- default:return false;
- }
- return false;
-}
-
-bool SQVM::Set(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val,bool fetchroot)
-{
- switch(type(self)){
- case OT_TABLE:
- if(_table(self)->Set(key,val))
- return true;
- if(_table(self)->_delegate) {
- if(Set(_table(self)->_delegate,key,val,false)) {
- return true;
- }
- }
- //keeps going
- case OT_USERDATA:
- if(_delegable(self)->_delegate) {
- SQObjectPtr t;
- Push(self);Push(key);Push(val);
- if(CallMetaMethod(_delegable(self),MT_SET,3,t)) return true;
- }
- break;
- case OT_INSTANCE:{
- if(_instance(self)->Set(key,val))
- return true;
- SQObjectPtr t;
- Push(self);Push(key);Push(val);
- if(CallMetaMethod(_delegable(self),MT_SET,3,t)) return true;
- }
- break;
- case OT_ARRAY:
- if(!sq_isnumeric(key)) {Raise_Error(_SC("indexing %s with %s"),GetTypeName(self),GetTypeName(key)); return false; }
- return _array(self)->Set(tointeger(key),val);
- default:
- Raise_Error(_SC("trying to set '%s'"),GetTypeName(self));
- return false;
- }
- if(fetchroot) {
- if(_rawval(STK(0)) == _rawval(self) &&
- type(STK(0)) == type(self)) {
- return _table(_roottable)->Set(key,val);
- }
- }
- return false;
-}
-
-bool SQVM::Clone(const SQObjectPtr &self,SQObjectPtr &target)
-{
- SQObjectPtr temp_reg;
- SQObjectPtr newobj;
- switch(type(self)){
- case OT_TABLE:
- newobj = _table(self)->Clone();
- goto cloned_mt;
- case OT_INSTANCE:
- newobj = _instance(self)->Clone(_ss(this));
-cloned_mt:
- if(_delegable(newobj)->_delegate){
- Push(newobj);
- Push(self);
- CallMetaMethod(_delegable(newobj),MT_CLONED,2,temp_reg);
- }
- target = newobj;
- return true;
- case OT_ARRAY:
- target = _array(self)->Clone();
- return true;
- default: return false;
- }
-}
-
-bool SQVM::NewSlot(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val,bool bstatic)
-{
- if(type(key) == OT_NULL) { Raise_Error(_SC("null cannot be used as index")); return false; }
- switch(type(self)) {
- case OT_TABLE: {
- bool rawcall = true;
- if(_table(self)->_delegate) {
- SQObjectPtr res;
- if(!_table(self)->Get(key,res)) {
- Push(self);Push(key);Push(val);
- rawcall = !CallMetaMethod(_table(self),MT_NEWSLOT,3,res);
- }
- }
- if(rawcall) _table(self)->NewSlot(key,val); //cannot fail
-
- break;}
- case OT_INSTANCE: {
- SQObjectPtr res;
- Push(self);Push(key);Push(val);
- if(!CallMetaMethod(_instance(self),MT_NEWSLOT,3,res)) {
- Raise_Error(_SC("class instances do not support the new slot operator"));
- return false;
- }
- break;}
- case OT_CLASS:
- if(!_class(self)->NewSlot(_ss(this),key,val,bstatic)) {
- if(_class(self)->_locked) {
- Raise_Error(_SC("trying to modify a class that has already been instantiated"));
- return false;
- }
- else {
- SQObjectPtr oval = PrintObjVal(key);
- Raise_Error(_SC("the property '%s' already exists"),_stringval(oval));
- return false;
- }
- }
- break;
- default:
- Raise_Error(_SC("indexing %s with %s"),GetTypeName(self),GetTypeName(key));
- return false;
- break;
- }
- return true;
-}
-
-bool SQVM::DeleteSlot(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &res)
-{
- switch(type(self)) {
- case OT_TABLE:
- case OT_INSTANCE:
- case OT_USERDATA: {
- SQObjectPtr t;
- bool handled = false;
- if(_delegable(self)->_delegate) {
- Push(self);Push(key);
- handled = CallMetaMethod(_delegable(self),MT_DELSLOT,2,t);
- }
-
- if(!handled) {
- if(type(self) == OT_TABLE) {
- if(_table(self)->Get(key,t)) {
- _table(self)->Remove(key);
- }
- else {
- Raise_IdxError((SQObject &)key);
- return false;
- }
- }
- else {
- Raise_Error(_SC("cannot delete a slot from %s"),GetTypeName(self));
- return false;
- }
- }
- res = t;
- }
- break;
- default:
- Raise_Error(_SC("attempt to delete a slot from a %s"),GetTypeName(self));
- return false;
- }
- return true;
-}
-
-bool SQVM::Call(SQObjectPtr &closure,SQInteger nparams,SQInteger stackbase,SQObjectPtr &outres,SQBool raiseerror)
-{
-#ifdef _DEBUG
-SQInteger prevstackbase = _stackbase;
-#endif
- switch(type(closure)) {
- case OT_CLOSURE:
- return Execute(closure, _top - nparams, nparams, stackbase,outres,raiseerror);
- break;
- case OT_NATIVECLOSURE:{
- bool suspend;
- return CallNative(_nativeclosure(closure), nparams, stackbase, outres,suspend);
-
- }
- break;
- case OT_CLASS: {
- SQObjectPtr constr;
- SQObjectPtr temp;
- CreateClassInstance(_class(closure),outres,constr);
- if(type(constr) != OT_NULL) {
- _stack[stackbase] = outres;
- return Call(constr,nparams,stackbase,temp,raiseerror);
- }
- return true;
- }
- break;
- default:
- return false;
- }
-#ifdef _DEBUG
- if(!_suspended) {
- assert(_stackbase == prevstackbase);
- }
-#endif
- return true;
-}
-
-bool SQVM::CallMetaMethod(SQDelegable *del,SQMetaMethod mm,SQInteger nparams,SQObjectPtr &outres)
-{
- SQObjectPtr closure;
- if(del->GetMetaMethod(this, mm, closure)) {
- if(Call(closure, nparams, _top - nparams, outres, SQFalse)) {
- Pop(nparams);
- return true;
- }
- }
- Pop(nparams);
- return false;
-}
-
-void SQVM::Remove(SQInteger n) {
- n = (n >= 0)?n + _stackbase - 1:_top + n;
- for(SQInteger i = n; i < _top; i++){
- _stack[i] = _stack[i+1];
- }
- _stack[_top] = _null_;
- _top--;
-}
-
-void SQVM::Pop() {
- _stack[--_top] = _null_;
-}
-
-void SQVM::Pop(SQInteger n) {
- for(SQInteger i = 0; i < n; i++){
- _stack[--_top] = _null_;
- }
-}
-
-void SQVM::Push(const SQObjectPtr &o) { _stack[_top++] = o; }
-SQObjectPtr &SQVM::Top() { return _stack[_top-1]; }
-SQObjectPtr &SQVM::PopGet() { return _stack[--_top]; }
-SQObjectPtr &SQVM::GetUp(SQInteger n) { return _stack[_top+n]; }
-SQObjectPtr &SQVM::GetAt(SQInteger n) { return _stack[n]; }
-
-#ifdef _DEBUG_DUMP
-void SQVM::dumpstack(SQInteger stackbase,bool dumpall)
-{
- SQInteger size=dumpall?_stack.size():_top;
- SQInteger n=0;
- scprintf(_SC("\n>>>>stack dump<<<<\n"));
- CallInfo &ci=_callsstack[_callsstacksize-1];
- scprintf(_SC("IP: %p\n"),ci._ip);
- scprintf(_SC("prev stack base: %d\n"),ci._prevstkbase);
- scprintf(_SC("prev top: %d\n"),ci._prevtop);
- for(SQInteger i=0;i<size;i++){
- SQObjectPtr &obj=_stack[i];
- if(stackbase==i)scprintf(_SC(">"));else scprintf(_SC(" "));
- scprintf(_SC("[%d]:"),n);
- switch(type(obj)){
- case OT_FLOAT: scprintf(_SC("FLOAT %.3f"),_float(obj));break;
- case OT_INTEGER: scprintf(_SC("INTEGER %d"),_integer(obj));break;
- case OT_BOOL: scprintf(_SC("BOOL %s"),_integer(obj)?"true":"false");break;
- case OT_STRING: scprintf(_SC("STRING %s"),_stringval(obj));break;
- case OT_NULL: scprintf(_SC("NULL")); break;
- case OT_TABLE: scprintf(_SC("TABLE %p[%p]"),_table(obj),_table(obj)->_delegate);break;
- case OT_ARRAY: scprintf(_SC("ARRAY %p"),_array(obj));break;
- case OT_CLOSURE: scprintf(_SC("CLOSURE [%p]"),_closure(obj));break;
- case OT_NATIVECLOSURE: scprintf(_SC("NATIVECLOSURE"));break;
- case OT_USERDATA: scprintf(_SC("USERDATA %p[%p]"),_userdataval(obj),_userdata(obj)->_delegate);break;
- case OT_GENERATOR: scprintf(_SC("GENERATOR %p"),_generator(obj));break;
- case OT_THREAD: scprintf(_SC("THREAD [%p]"),_thread(obj));break;
- case OT_USERPOINTER: scprintf(_SC("USERPOINTER %p"),_userpointer(obj));break;
- case OT_CLASS: scprintf(_SC("CLASS %p"),_class(obj));break;
- case OT_INSTANCE: scprintf(_SC("INSTANCE %p"),_instance(obj));break;
- case OT_WEAKREF: scprintf(_SC("WEAKERF %p"),_weakref(obj));break;
- default:
- assert(0);
- break;
- };
- scprintf(_SC("\n"));
- ++n;
- }
-}
-
-
-
-#endif
+/*\r
+ see copyright notice in squirrel.h\r
+*/\r
+#include "sqpcheader.h"\r
+#include <math.h>\r
+#include <stdlib.h>\r
+#include "sqopcodes.h"\r
+#include "sqvm.h"\r
+#include "sqfuncproto.h"\r
+#include "sqclosure.h"\r
+#include "sqstring.h"\r
+#include "sqtable.h"\r
+#include "squserdata.h"\r
+#include "sqarray.h"\r
+#include "sqclass.h"\r
+\r
+#define TOP() (_stack._vals[_top-1])\r
+\r
+bool SQVM::BW_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2)\r
+{\r
+ SQInteger res;\r
+ if((type(o1)|type(o2)) == OT_INTEGER)\r
+ {\r
+ SQInteger i1 = _integer(o1), i2 = _integer(o2);\r
+ switch(op) {\r
+ case BW_AND: res = i1 & i2; break;\r
+ case BW_OR: res = i1 | i2; break;\r
+ case BW_XOR: res = i1 ^ i2; break;\r
+ case BW_SHIFTL: res = i1 << i2; break;\r
+ case BW_SHIFTR: res = i1 >> i2; break;\r
+ case BW_USHIFTR:res = (SQInteger)(*((SQUnsignedInteger*)&i1) >> i2); break;\r
+ default: { Raise_Error(_SC("internal vm error bitwise op failed")); return false; }\r
+ }\r
+ } \r
+ else { Raise_Error(_SC("bitwise op between '%s' and '%s'"),GetTypeName(o1),GetTypeName(o2)); return false;}\r
+ trg = res;\r
+ return true;\r
+}\r
+\r
+#define _ARITH_(op,trg,o1,o2) \\r
+{ \\r
+ SQInteger tmask = type(o1)|type(o2); \\r
+ switch(tmask) { \\r
+ case OT_INTEGER: trg = _integer(o1) op _integer(o2);break; \\r
+ case (OT_FLOAT|OT_INTEGER): \\r
+ case (OT_FLOAT): trg = tofloat(o1) op tofloat(o2); break;\\r
+ default: _GUARD(ARITH_OP((#op)[0],trg,o1,o2)); break;\\r
+ } \\r
+}\r
+\r
+#define _ARITH_NOZERO(op,trg,o1,o2,err) \\r
+{ \\r
+ SQInteger tmask = type(o1)|type(o2); \\r
+ switch(tmask) { \\r
+ case OT_INTEGER: { SQInteger i2 = _integer(o2); if(i2 == 0) { Raise_Error(err); SQ_THROW(); } trg = _integer(o1) op i2; } break;\\r
+ case (OT_FLOAT|OT_INTEGER): \\r
+ case (OT_FLOAT): trg = tofloat(o1) op tofloat(o2); break;\\r
+ default: _GUARD(ARITH_OP((#op)[0],trg,o1,o2)); break;\\r
+ } \\r
+}\r
+\r
+bool SQVM::ARITH_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2)\r
+{\r
+ SQInteger tmask = type(o1)|type(o2);\r
+ switch(tmask) {\r
+ case OT_INTEGER:{\r
+ SQInteger res, i1 = _integer(o1), i2 = _integer(o2);\r
+ switch(op) {\r
+ case '+': res = i1 + i2; break;\r
+ case '-': res = i1 - i2; break;\r
+ case '/': if(i2 == 0) { Raise_Error(_SC("division by zero")); return false; }\r
+ res = i1 / i2; \r
+ break;\r
+ case '*': res = i1 * i2; break;\r
+ case '%': if(i2 == 0) { Raise_Error(_SC("modulo by zero")); return false; }\r
+ res = i1 % i2; \r
+ break;\r
+ default: res = 0xDEADBEEF;\r
+ }\r
+ trg = res; }\r
+ break;\r
+ case (OT_FLOAT|OT_INTEGER):\r
+ case (OT_FLOAT):{\r
+ SQFloat res, f1 = tofloat(o1), f2 = tofloat(o2);\r
+ switch(op) {\r
+ case '+': res = f1 + f2; break;\r
+ case '-': res = f1 - f2; break;\r
+ case '/': res = f1 / f2; break;\r
+ case '*': res = f1 * f2; break;\r
+ case '%': res = SQFloat(fmod((double)f1,(double)f2)); break;\r
+ default: res = 0x0f;\r
+ }\r
+ trg = res; }\r
+ break;\r
+ default:\r
+ if(op == '+' && (tmask & _RT_STRING)){\r
+ if(!StringCat(o1, o2, trg)) return false;\r
+ }\r
+ else if(!ArithMetaMethod(op,o1,o2,trg)) { \r
+ return false; \r
+ }\r
+ }\r
+ return true;\r
+}\r
+\r
+SQVM::SQVM(SQSharedState *ss)\r
+{\r
+ _sharedstate=ss;\r
+ _suspended = SQFalse;\r
+ _suspended_target = -1;\r
+ _suspended_root = SQFalse;\r
+ _suspended_traps = -1;\r
+ _foreignptr = NULL;\r
+ _nnativecalls = 0;\r
+ _nmetamethodscall = 0;\r
+ _lasterror.Null();\r
+ _errorhandler.Null();\r
+ _debughook = false;\r
+ _debughook_native = NULL;\r
+ _debughook_closure.Null();\r
+ _openouters = NULL;\r
+ ci = NULL;\r
+ INIT_CHAIN();ADD_TO_CHAIN(&_ss(this)->_gc_chain,this);\r
+}\r
+\r
+void SQVM::Finalize()\r
+{\r
+ if(_openouters) CloseOuters(&_stack._vals[0]);\r
+ _roottable.Null();\r
+ _lasterror.Null();\r
+ _errorhandler.Null();\r
+ _debughook = false;\r
+ _debughook_native = NULL;\r
+ _debughook_closure.Null();\r
+ temp_reg.Null();\r
+ _callstackdata.resize(0);\r
+ SQInteger size=_stack.size();\r
+ for(SQInteger i=0;i<size;i++)\r
+ _stack[i].Null();\r
+}\r
+\r
+SQVM::~SQVM()\r
+{\r
+ Finalize();\r
+ REMOVE_FROM_CHAIN(&_ss(this)->_gc_chain,this);\r
+}\r
+\r
+bool SQVM::ArithMetaMethod(SQInteger op,const SQObjectPtr &o1,const SQObjectPtr &o2,SQObjectPtr &dest)\r
+{\r
+ SQMetaMethod mm;\r
+ switch(op){\r
+ case _SC('+'): mm=MT_ADD; break;\r
+ case _SC('-'): mm=MT_SUB; break;\r
+ case _SC('/'): mm=MT_DIV; break;\r
+ case _SC('*'): mm=MT_MUL; break;\r
+ case _SC('%'): mm=MT_MODULO; break;\r
+ default: mm = MT_ADD; assert(0); break; //shutup compiler\r
+ }\r
+ if(is_delegable(o1) && _delegable(o1)->_delegate) {\r
+ \r
+ SQObjectPtr closure;\r
+ if(_delegable(o1)->GetMetaMethod(this, mm, closure)) {\r
+ Push(o1);Push(o2);\r
+ return CallMetaMethod(closure,mm,2,dest);\r
+ }\r
+ }\r
+ Raise_Error(_SC("arith op %c on between '%s' and '%s'"),op,GetTypeName(o1),GetTypeName(o2)); \r
+ return false;\r
+}\r
+\r
+bool SQVM::NEG_OP(SQObjectPtr &trg,const SQObjectPtr &o)\r
+{\r
+ \r
+ switch(type(o)) {\r
+ case OT_INTEGER:\r
+ trg = -_integer(o);\r
+ return true;\r
+ case OT_FLOAT:\r
+ trg = -_float(o);\r
+ return true;\r
+ case OT_TABLE:\r
+ case OT_USERDATA:\r
+ case OT_INSTANCE:\r
+ if(_delegable(o)->_delegate) {\r
+ SQObjectPtr closure;\r
+ if(_delegable(o)->GetMetaMethod(this, MT_UNM, closure)) {\r
+ Push(o);\r
+ if(!CallMetaMethod(closure, MT_UNM, 1, temp_reg)) return false;\r
+ _Swap(trg,temp_reg);\r
+ return true;\r
+\r
+ }\r
+ }\r
+ default:break; //shutup compiler\r
+ }\r
+ Raise_Error(_SC("attempt to negate a %s"), GetTypeName(o));\r
+ return false;\r
+}\r
+\r
+#define _RET_SUCCEED(exp) { result = (exp); return true; } \r
+bool SQVM::ObjCmp(const SQObjectPtr &o1,const SQObjectPtr &o2,SQInteger &result)\r
+{\r
+ SQObjectType t1 = type(o1), t2 = type(o2);\r
+ if(t1 == t2) {\r
+ if(_rawval(o1) == _rawval(o2))_RET_SUCCEED(0);\r
+ SQObjectPtr res;\r
+ switch(t1){\r
+ case OT_STRING:\r
+ _RET_SUCCEED(scstrcmp(_stringval(o1),_stringval(o2)));\r
+ case OT_INTEGER:\r
+ _RET_SUCCEED((_integer(o1)<_integer(o2))?-1:1);\r
+ case OT_FLOAT:\r
+ _RET_SUCCEED((_float(o1)<_float(o2))?-1:1);\r
+ case OT_TABLE:\r
+ case OT_USERDATA:\r
+ case OT_INSTANCE:\r
+ if(_delegable(o1)->_delegate) {\r
+ SQObjectPtr closure;\r
+ if(_delegable(o1)->GetMetaMethod(this, MT_CMP, closure)) {\r
+ Push(o1);Push(o2);\r
+ if(CallMetaMethod(closure,MT_CMP,2,res)) {\r
+ if(type(res) != OT_INTEGER) {\r
+ Raise_Error(_SC("_cmp must return an integer"));\r
+ return false;\r
+ }\r
+ _RET_SUCCEED(_integer(res))\r
+ }\r
+ return false;\r
+ }\r
+ }\r
+ //continues through (no break needed)\r
+ default: \r
+ _RET_SUCCEED( _userpointer(o1) < _userpointer(o2)?-1:1 );\r
+ }\r
+ assert(0);\r
+ //if(type(res)!=OT_INTEGER) { Raise_CompareError(o1,o2); return false; }\r
+ // _RET_SUCCEED(_integer(res));\r
+ \r
+ }\r
+ else{\r
+ if(sq_isnumeric(o1) && sq_isnumeric(o2)){\r
+ if((t1==OT_INTEGER) && (t2==OT_FLOAT)) { \r
+ if( _integer(o1)==_float(o2) ) { _RET_SUCCEED(0); }\r
+ else if( _integer(o1)<_float(o2) ) { _RET_SUCCEED(-1); }\r
+ _RET_SUCCEED(1);\r
+ }\r
+ else{\r
+ if( _float(o1)==_integer(o2) ) { _RET_SUCCEED(0); }\r
+ else if( _float(o1)<_integer(o2) ) { _RET_SUCCEED(-1); }\r
+ _RET_SUCCEED(1);\r
+ }\r
+ }\r
+ else if(t1==OT_NULL) {_RET_SUCCEED(-1);}\r
+ else if(t2==OT_NULL) {_RET_SUCCEED(1);}\r
+ else { Raise_CompareError(o1,o2); return false; }\r
+ \r
+ }\r
+ assert(0);\r
+ _RET_SUCCEED(0); //cannot happen\r
+}\r
+\r
+bool SQVM::CMP_OP(CmpOP op, const SQObjectPtr &o1,const SQObjectPtr &o2,SQObjectPtr &res)\r
+{\r
+ SQInteger r;\r
+ if(ObjCmp(o1,o2,r)) {\r
+ switch(op) {\r
+ case CMP_G: res = (r > 0); return true;\r
+ case CMP_GE: res = (r >= 0); return true;\r
+ case CMP_L: res = (r < 0); return true;\r
+ case CMP_LE: res = (r <= 0); return true;\r
+ case CMP_3W: res = r; return true;\r
+ }\r
+ assert(0);\r
+ }\r
+ return false;\r
+}\r
+\r
+bool SQVM::ToString(const SQObjectPtr &o,SQObjectPtr &res)\r
+{\r
+ switch(type(o)) {\r
+ case OT_STRING:\r
+ res = o;\r
+ return true;\r
+ case OT_FLOAT:\r
+ scsprintf(_sp(rsl(NUMBER_MAX_CHAR+1)),_SC("%g"),_float(o));\r
+ break;\r
+ case OT_INTEGER:\r
+ scsprintf(_sp(rsl(NUMBER_MAX_CHAR+1)),_PRINT_INT_FMT,_integer(o));\r
+ break;\r
+ case OT_BOOL:\r
+ scsprintf(_sp(rsl(6)),_integer(o)?_SC("true"):_SC("false"));\r
+ break;\r
+ case OT_TABLE:\r
+ case OT_USERDATA:\r
+ case OT_INSTANCE:\r
+ if(_delegable(o)->_delegate) {\r
+ SQObjectPtr closure;\r
+ if(_delegable(o)->GetMetaMethod(this, MT_TOSTRING, closure)) {\r
+ Push(o);\r
+ if(CallMetaMethod(closure,MT_TOSTRING,1,res)) {;\r
+ if(type(res) == OT_STRING)\r
+ return true;\r
+ } \r
+ else {\r
+ return false;\r
+ }\r
+ }\r
+ }\r
+ default:\r
+ scsprintf(_sp(rsl(sizeof(void*)+20)),_SC("(%s : 0x%p)"),GetTypeName(o),(void*)_rawval(o));\r
+ }\r
+ res = SQString::Create(_ss(this),_spval);\r
+ return true;\r
+}\r
+\r
+\r
+bool SQVM::StringCat(const SQObjectPtr &str,const SQObjectPtr &obj,SQObjectPtr &dest)\r
+{\r
+ SQObjectPtr a, b;\r
+ if(!ToString(str, a)) return false;\r
+ if(!ToString(obj, b)) return false;\r
+ SQInteger l = _string(a)->_len , ol = _string(b)->_len;\r
+ SQChar *s = _sp(rsl(l + ol + 1));\r
+ memcpy(s, _stringval(a), rsl(l)); \r
+ memcpy(s + l, _stringval(b), rsl(ol));\r
+ dest = SQString::Create(_ss(this), _spval, l + ol);\r
+ return true;\r
+}\r
+\r
+bool SQVM::TypeOf(const SQObjectPtr &obj1,SQObjectPtr &dest)\r
+{\r
+ if(is_delegable(obj1) && _delegable(obj1)->_delegate) {\r
+ SQObjectPtr closure;\r
+ if(_delegable(obj1)->GetMetaMethod(this, MT_TYPEOF, closure)) {\r
+ Push(obj1);\r
+ return CallMetaMethod(closure,MT_TYPEOF,1,dest);\r
+ }\r
+ }\r
+ dest = SQString::Create(_ss(this),GetTypeName(obj1));\r
+ return true;\r
+}\r
+\r
+bool SQVM::Init(SQVM *friendvm, SQInteger stacksize)\r
+{\r
+ _stack.resize(stacksize);\r
+ _alloccallsstacksize = 4;\r
+ _callstackdata.resize(_alloccallsstacksize);\r
+ _callsstacksize = 0;\r
+ _callsstack = &_callstackdata[0];\r
+ _stackbase = 0;\r
+ _top = 0;\r
+ if(!friendvm) {\r
+ _roottable = SQTable::Create(_ss(this), 0);\r
+ sq_base_register(this);\r
+ }\r
+ else {\r
+ _roottable = friendvm->_roottable;\r
+ _errorhandler = friendvm->_errorhandler;\r
+ _debughook = friendvm->_debughook;\r
+ _debughook_native = friendvm->_debughook_native;\r
+ _debughook_closure = friendvm->_debughook_closure;\r
+ }\r
+ return true;\r
+}\r
+\r
+\r
+bool SQVM::StartCall(SQClosure *closure,SQInteger target,SQInteger args,SQInteger stackbase,bool tailcall)\r
+{\r
+ SQFunctionProto *func = closure->_function;\r
+\r
+ SQInteger paramssize = func->_nparameters;\r
+ const SQInteger newtop = stackbase + func->_stacksize;\r
+ SQInteger nargs = args;\r
+ if(func->_varparams)\r
+ {\r
+ paramssize--;\r
+ if (nargs < paramssize) {\r
+ Raise_Error(_SC("wrong number of parameters"));\r
+ return false;\r
+ }\r
+\r
+ //dumpstack(stackbase);\r
+ SQInteger nvargs = nargs - paramssize;\r
+ SQArray *arr = SQArray::Create(_ss(this),nvargs);\r
+ SQInteger pbase = stackbase+paramssize;\r
+ for(SQInteger n = 0; n < nvargs; n++) {\r
+ arr->_values[n] = _stack._vals[pbase];\r
+ _stack._vals[pbase].Null();\r
+ pbase++;\r
+\r
+ }\r
+ _stack._vals[stackbase+paramssize] = arr;\r
+ //dumpstack(stackbase);\r
+ }\r
+ else if (paramssize != nargs) {\r
+ SQInteger ndef = func->_ndefaultparams;\r
+ SQInteger diff;\r
+ if(ndef && nargs < paramssize && (diff = paramssize - nargs) <= ndef) {\r
+ for(SQInteger n = ndef - diff; n < ndef; n++) {\r
+ _stack._vals[stackbase + (nargs++)] = closure->_defaultparams[n];\r
+ }\r
+ }\r
+ else {\r
+ Raise_Error(_SC("wrong number of parameters"));\r
+ return false;\r
+ }\r
+ }\r
+\r
+ if(closure->_env) {\r
+ _stack._vals[stackbase] = closure->_env->_obj;\r
+ }\r
+\r
+ if(!EnterFrame(stackbase, newtop, tailcall)) return false;\r
+\r
+ ci->_closure = closure;\r
+ ci->_literals = func->_literals;\r
+ ci->_ip = func->_instructions;\r
+ ci->_target = (SQInt32)target;\r
+\r
+ if (_debughook) {\r
+ CallDebugHook(_SC('c'));\r
+ }\r
+\r
+ if (closure->_function->_bgenerator) {\r
+ SQFunctionProto *f = closure->_function;\r
+ SQGenerator *gen = SQGenerator::Create(_ss(this), closure);\r
+ if(!gen->Yield(this,f->_stacksize))\r
+ return false;\r
+ SQObjectPtr temp;\r
+ Return(1, target, temp);\r
+ STK(target) = gen;\r
+ }\r
+\r
+\r
+ return true;\r
+}\r
+\r
+bool SQVM::Return(SQInteger _arg0, SQInteger _arg1, SQObjectPtr &retval)\r
+{\r
+ SQBool _isroot = ci->_root;\r
+ SQInteger callerbase = _stackbase - ci->_prevstkbase;\r
+\r
+ if (_debughook) {\r
+ for(SQInteger i=0; i<ci->_ncalls; i++) {\r
+ CallDebugHook(_SC('r'));\r
+ }\r
+ }\r
+\r
+ SQObjectPtr *dest;\r
+ if (_isroot) {\r
+ dest = &(retval);\r
+ } else if (ci->_target == -1) {\r
+ dest = NULL;\r
+ } else {\r
+ dest = &_stack._vals[callerbase + ci->_target];\r
+ }\r
+ if (dest) {\r
+ if(_arg0 != 0xFF) {\r
+ *dest = _stack._vals[_stackbase+_arg1];\r
+ }\r
+ else {\r
+ dest->Null();\r
+ }\r
+ //*dest = (_arg0 != 0xFF) ? _stack._vals[_stackbase+_arg1] : _null_;\r
+ }\r
+ LeaveFrame();\r
+ return _isroot ? true : false;\r
+}\r
+\r
+#define _RET_ON_FAIL(exp) { if(!exp) return false; }\r
+\r
+bool SQVM::PLOCAL_INC(SQInteger op,SQObjectPtr &target, SQObjectPtr &a, SQObjectPtr &incr)\r
+{\r
+ SQObjectPtr trg;\r
+ _RET_ON_FAIL(ARITH_OP( op , trg, a, incr));\r
+ target = a;\r
+ a = trg;\r
+ return true;\r
+}\r
+\r
+bool SQVM::DerefInc(SQInteger op,SQObjectPtr &target, SQObjectPtr &self, SQObjectPtr &key, SQObjectPtr &incr, bool postfix,SQInteger selfidx)\r
+{\r
+ SQObjectPtr tmp, tself = self, tkey = key;\r
+ if (!Get(tself, tkey, tmp, false, selfidx)) { return false; }\r
+ _RET_ON_FAIL(ARITH_OP( op , target, tmp, incr))\r
+ if (!Set(tself, tkey, target,selfidx)) { return false; }\r
+ if (postfix) target = tmp;\r
+ return true;\r
+}\r
+\r
+#define arg0 (_i_._arg0)\r
+#define sarg0 ((SQInteger)*((signed char *)&_i_._arg0))\r
+#define arg1 (_i_._arg1)\r
+#define sarg1 (*((SQInt32 *)&_i_._arg1))\r
+#define arg2 (_i_._arg2)\r
+#define arg3 (_i_._arg3)\r
+#define sarg3 ((SQInteger)*((signed char *)&_i_._arg3))\r
+\r
+SQRESULT SQVM::Suspend()\r
+{\r
+ if (_suspended)\r
+ return sq_throwerror(this, _SC("cannot suspend an already suspended vm"));\r
+ if (_nnativecalls!=2)\r
+ return sq_throwerror(this, _SC("cannot suspend through native calls/metamethods"));\r
+ return SQ_SUSPEND_FLAG;\r
+}\r
+\r
+\r
+#define _FINISH(howmuchtojump) {jump = howmuchtojump; return true; }\r
+bool SQVM::FOREACH_OP(SQObjectPtr &o1,SQObjectPtr &o2,SQObjectPtr \r
+&o3,SQObjectPtr &o4,SQInteger arg_2,int exitpos,int &jump)\r
+{\r
+ SQInteger nrefidx;\r
+ switch(type(o1)) {\r
+ case OT_TABLE:\r
+ if((nrefidx = _table(o1)->Next(false,o4, o2, o3)) == -1) _FINISH(exitpos);\r
+ o4 = (SQInteger)nrefidx; _FINISH(1);\r
+ case OT_ARRAY:\r
+ if((nrefidx = _array(o1)->Next(o4, o2, o3)) == -1) _FINISH(exitpos);\r
+ o4 = (SQInteger) nrefidx; _FINISH(1);\r
+ case OT_STRING:\r
+ if((nrefidx = _string(o1)->Next(o4, o2, o3)) == -1)_FINISH(exitpos);\r
+ o4 = (SQInteger)nrefidx; _FINISH(1);\r
+ case OT_CLASS:\r
+ if((nrefidx = _class(o1)->Next(o4, o2, o3)) == -1)_FINISH(exitpos);\r
+ o4 = (SQInteger)nrefidx; _FINISH(1);\r
+ case OT_USERDATA:\r
+ case OT_INSTANCE:\r
+ if(_delegable(o1)->_delegate) {\r
+ SQObjectPtr itr;\r
+ SQObjectPtr closure;\r
+ if(_delegable(o1)->GetMetaMethod(this, MT_NEXTI, closure)) {\r
+ Push(o1);\r
+ Push(o4);\r
+ if(CallMetaMethod(closure, MT_NEXTI, 2, itr)) {\r
+ o4 = o2 = itr;\r
+ if(type(itr) == OT_NULL) _FINISH(exitpos);\r
+ if(!Get(o1, itr, o3, false, DONT_FALL_BACK)) {\r
+ Raise_Error(_SC("_nexti returned an invalid idx")); // cloud be changed\r
+ return false;\r
+ }\r
+ _FINISH(1);\r
+ }\r
+ else {\r
+ return false;\r
+ }\r
+ }\r
+ Raise_Error(_SC("_nexti failed"));\r
+ return false;\r
+ }\r
+ break;\r
+ case OT_GENERATOR:\r
+ if(_generator(o1)->_state == SQGenerator::eDead) _FINISH(exitpos);\r
+ if(_generator(o1)->_state == SQGenerator::eSuspended) {\r
+ SQInteger idx = 0;\r
+ if(type(o4) == OT_INTEGER) {\r
+ idx = _integer(o4) + 1;\r
+ }\r
+ o2 = idx;\r
+ o4 = idx;\r
+ _generator(o1)->Resume(this, o3);\r
+ _FINISH(0);\r
+ }\r
+ default: \r
+ Raise_Error(_SC("cannot iterate %s"), GetTypeName(o1));\r
+ }\r
+ return false; //cannot be hit(just to avoid warnings)\r
+}\r
+\r
+#define COND_LITERAL (arg3!=0?ci->_literals[arg1]:STK(arg1))\r
+\r
+#define SQ_THROW() { goto exception_trap; }\r
+\r
+#define _GUARD(exp) { if(!exp) { SQ_THROW();} }\r
+\r
+bool SQVM::CLOSURE_OP(SQObjectPtr &target, SQFunctionProto *func)\r
+{\r
+ SQInteger nouters;\r
+ SQClosure *closure = SQClosure::Create(_ss(this), func);\r
+ if((nouters = func->_noutervalues)) {\r
+ for(SQInteger i = 0; i<nouters; i++) {\r
+ SQOuterVar &v = func->_outervalues[i];\r
+ switch(v._type){\r
+ case otLOCAL:\r
+ FindOuter(closure->_outervalues[i], &STK(_integer(v._src)));\r
+ break;\r
+ case otOUTER:\r
+ closure->_outervalues[i] = _closure(ci->_closure)->_outervalues[_integer(v._src)];\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ SQInteger ndefparams;\r
+ if((ndefparams = func->_ndefaultparams)) {\r
+ for(SQInteger i = 0; i < ndefparams; i++) {\r
+ SQInteger spos = func->_defaultparams[i];\r
+ closure->_defaultparams[i] = _stack._vals[_stackbase + spos];\r
+ }\r
+ }\r
+ target = closure;\r
+ return true;\r
+\r
+}\r
+\r
+\r
+bool SQVM::CLASS_OP(SQObjectPtr &target,SQInteger baseclass,SQInteger attributes)\r
+{\r
+ SQClass *base = NULL;\r
+ SQObjectPtr attrs;\r
+ if(baseclass != -1) {\r
+ if(type(_stack._vals[_stackbase+baseclass]) != OT_CLASS) { Raise_Error(_SC("trying to inherit from a %s"),GetTypeName(_stack._vals[_stackbase+baseclass])); return false; }\r
+ base = _class(_stack._vals[_stackbase + baseclass]);\r
+ }\r
+ if(attributes != MAX_FUNC_STACKSIZE) {\r
+ attrs = _stack._vals[_stackbase+attributes];\r
+ }\r
+ target = SQClass::Create(_ss(this),base);\r
+ if(type(_class(target)->_metamethods[MT_INHERITED]) != OT_NULL) {\r
+ int nparams = 2;\r
+ SQObjectPtr ret;\r
+ Push(target); Push(attrs);\r
+ if(!Call(_class(target)->_metamethods[MT_INHERITED],nparams,_top - nparams, ret, false)) {\r
+ Pop(nparams);\r
+ return false;\r
+ }\r
+ Pop(nparams);\r
+ }\r
+ _class(target)->_attributes = attrs;\r
+ return true;\r
+}\r
+\r
+bool SQVM::IsEqual(const SQObjectPtr &o1,const SQObjectPtr &o2,bool &res)\r
+{\r
+ if(type(o1) == type(o2)) {\r
+ res = (_rawval(o1) == _rawval(o2));\r
+ }\r
+ else {\r
+ if(sq_isnumeric(o1) && sq_isnumeric(o2)) {\r
+ res = (tofloat(o1) == tofloat(o2));\r
+ }\r
+ else {\r
+ res = false;\r
+ }\r
+ }\r
+ return true;\r
+}\r
+\r
+bool SQVM::IsFalse(SQObjectPtr &o)\r
+{\r
+ if(((type(o) & SQOBJECT_CANBEFALSE) \r
+ && ( ((type(o) == OT_FLOAT) && (_float(o) == SQFloat(0.0))) ))\r
+#if !defined(SQUSEDOUBLE) || (defined(SQUSEDOUBLE) && defined(_SQ64))\r
+ || (_integer(o) == 0) ) //OT_NULL|OT_INTEGER|OT_BOOL\r
+#else\r
+ || (((type(o) != OT_FLOAT) && (_integer(o) == 0))) ) //OT_NULL|OT_INTEGER|OT_BOOL\r
+#endif\r
+ {\r
+ return true;\r
+ }\r
+ return false;\r
+}\r
+\r
+bool SQVM::Execute(SQObjectPtr &closure, SQInteger nargs, SQInteger stackbase,SQObjectPtr &outres, SQBool raiseerror,ExecutionType et)\r
+{\r
+ if ((_nnativecalls + 1) > MAX_NATIVE_CALLS) { Raise_Error(_SC("Native stack overflow")); return false; }\r
+ _nnativecalls++;\r
+ AutoDec ad(&_nnativecalls);\r
+ SQInteger traps = 0;\r
+ CallInfo *prevci = ci;\r
+ \r
+ switch(et) {\r
+ case ET_CALL: {\r
+ temp_reg = closure;\r
+ if(!StartCall(_closure(temp_reg), _top - nargs, nargs, stackbase, false)) { \r
+ //call the handler if there are no calls in the stack, if not relies on the previous node\r
+ if(ci == NULL) CallErrorHandler(_lasterror);\r
+ return false;\r
+ }\r
+ if(ci == prevci) {\r
+ outres = STK(_top-nargs);\r
+ return true;\r
+ }\r
+ ci->_root = SQTrue;\r
+ }\r
+ break;\r
+ case ET_RESUME_GENERATOR: _generator(closure)->Resume(this, outres); ci->_root = SQTrue; traps += ci->_etraps; break;\r
+ case ET_RESUME_VM:\r
+ case ET_RESUME_THROW_VM:\r
+ traps = _suspended_traps;\r
+ ci->_root = _suspended_root;\r
+ _suspended = SQFalse;\r
+ if(et == ET_RESUME_THROW_VM) { SQ_THROW(); }\r
+ break;\r
+ }\r
+ \r
+exception_restore:\r
+ //\r
+ {\r
+ for(;;)\r
+ {\r
+ const SQInstruction &_i_ = *ci->_ip++;\r
+ //dumpstack(_stackbase);\r
+ //scprintf("\n[%d] %s %d %d %d %d\n",ci->_ip-ci->_iv->_vals,g_InstrDesc[_i_.op].name,arg0,arg1,arg2,arg3);\r
+ switch(_i_.op)\r
+ {\r
+ case _OP_LINE: if (_debughook) CallDebugHook(_SC('l'),arg1); continue;\r
+ case _OP_LOAD: TARGET = ci->_literals[arg1]; continue;\r
+ case _OP_LOADINT: \r
+#ifndef _SQ64\r
+ TARGET = (SQInteger)arg1; continue;\r
+#else\r
+ TARGET = (SQInteger)((SQUnsignedInteger32)arg1); continue;\r
+#endif\r
+ case _OP_LOADFLOAT: TARGET = *((SQFloat *)&arg1); continue;\r
+ case _OP_DLOAD: TARGET = ci->_literals[arg1]; STK(arg2) = ci->_literals[arg3];continue;\r
+ case _OP_TAILCALL:{\r
+ SQObjectPtr &t = STK(arg1);\r
+ if (type(t) == OT_CLOSURE \r
+ && (!_closure(t)->_function->_bgenerator)){\r
+ SQObjectPtr clo = t;\r
+ if(_openouters) CloseOuters(&(_stack._vals[_stackbase]));\r
+ for (SQInteger i = 0; i < arg3; i++) STK(i) = STK(arg2 + i);\r
+ _GUARD(StartCall(_closure(clo), ci->_target, arg3, _stackbase, true));\r
+ continue;\r
+ }\r
+ }\r
+ case _OP_CALL: {\r
+ SQObjectPtr clo = STK(arg1);\r
+ switch (type(clo)) {\r
+ case OT_CLOSURE:\r
+ _GUARD(StartCall(_closure(clo), sarg0, arg3, _stackbase+arg2, false));\r
+ continue;\r
+ case OT_NATIVECLOSURE: {\r
+ bool suspend;\r
+ _GUARD(CallNative(_nativeclosure(clo), arg3, _stackbase+arg2, clo,suspend));\r
+ if(suspend){\r
+ _suspended = SQTrue;\r
+ _suspended_target = sarg0;\r
+ _suspended_root = ci->_root;\r
+ _suspended_traps = traps;\r
+ outres = clo;\r
+ return true;\r
+ }\r
+ if(sarg0 != -1) {\r
+ STK(arg0) = clo;\r
+ }\r
+ }\r
+ continue;\r
+ case OT_CLASS:{\r
+ SQObjectPtr inst;\r
+ _GUARD(CreateClassInstance(_class(clo),inst,clo));\r
+ if(sarg0 != -1) {\r
+ STK(arg0) = inst;\r
+ }\r
+ SQInteger stkbase;\r
+ switch(type(clo)) {\r
+ case OT_CLOSURE:\r
+ stkbase = _stackbase+arg2;\r
+ _stack._vals[stkbase] = inst;\r
+ _GUARD(StartCall(_closure(clo), -1, arg3, stkbase, false));\r
+ break;\r
+ case OT_NATIVECLOSURE:\r
+ bool suspend;\r
+ stkbase = _stackbase+arg2;\r
+ _stack._vals[stkbase] = inst;\r
+ _GUARD(CallNative(_nativeclosure(clo), arg3, stkbase, clo,suspend));\r
+ break;\r
+ default: break; //shutup GCC 4.x\r
+ }\r
+ }\r
+ break;\r
+ case OT_TABLE:\r
+ case OT_USERDATA:\r
+ case OT_INSTANCE:{\r
+ SQObjectPtr closure;\r
+ if(_delegable(clo)->_delegate && _delegable(clo)->GetMetaMethod(this,MT_CALL,closure)) {\r
+ Push(clo);\r
+ for (SQInteger i = 0; i < arg3; i++) Push(STK(arg2 + i));\r
+ if(!CallMetaMethod(closure, MT_CALL, arg3+1, clo)) SQ_THROW();\r
+ if(sarg0 != -1) {\r
+ STK(arg0) = clo;\r
+ }\r
+ break;\r
+ }\r
+ \r
+ //Raise_Error(_SC("attempt to call '%s'"), GetTypeName(clo));\r
+ //SQ_THROW();\r
+ }\r
+ default:\r
+ Raise_Error(_SC("attempt to call '%s'"), GetTypeName(clo));\r
+ SQ_THROW();\r
+ }\r
+ }\r
+ continue;\r
+ case _OP_PREPCALL:\r
+ case _OP_PREPCALLK: {\r
+ SQObjectPtr &key = _i_.op == _OP_PREPCALLK?(ci->_literals)[arg1]:STK(arg1);\r
+ SQObjectPtr &o = STK(arg2);\r
+ if (!Get(o, key, temp_reg,false,arg2)) {\r
+ SQ_THROW();\r
+ }\r
+ STK(arg3) = o;\r
+ _Swap(TARGET,temp_reg);//TARGET = temp_reg;\r
+ }\r
+ continue;\r
+ case _OP_GETK:\r
+ if (!Get(STK(arg2), ci->_literals[arg1], temp_reg, false,arg2)) { SQ_THROW();}\r
+ _Swap(TARGET,temp_reg);//TARGET = temp_reg;\r
+ continue;\r
+ case _OP_MOVE: TARGET = STK(arg1); continue;\r
+ case _OP_NEWSLOT:\r
+ _GUARD(NewSlot(STK(arg1), STK(arg2), STK(arg3),false));\r
+ if(arg0 != 0xFF) TARGET = STK(arg3);\r
+ continue;\r
+ case _OP_DELETE: _GUARD(DeleteSlot(STK(arg1), STK(arg2), TARGET)); continue;\r
+ case _OP_SET:\r
+ if (!Set(STK(arg1), STK(arg2), STK(arg3),arg1)) { SQ_THROW(); }\r
+ if (arg0 != 0xFF) TARGET = STK(arg3);\r
+ continue;\r
+ case _OP_GET:\r
+ if (!Get(STK(arg1), STK(arg2), temp_reg, false,arg1)) { SQ_THROW(); }\r
+ _Swap(TARGET,temp_reg);//TARGET = temp_reg;\r
+ continue;\r
+ case _OP_EQ:{\r
+ bool res;\r
+ if(!IsEqual(STK(arg2),COND_LITERAL,res)) { SQ_THROW(); }\r
+ TARGET = res?true:false;\r
+ }continue;\r
+ case _OP_NE:{ \r
+ bool res;\r
+ if(!IsEqual(STK(arg2),COND_LITERAL,res)) { SQ_THROW(); }\r
+ TARGET = (!res)?true:false;\r
+ } continue;\r
+ case _OP_ADD: _ARITH_(+,TARGET,STK(arg2),STK(arg1)); continue;\r
+ case _OP_SUB: _ARITH_(-,TARGET,STK(arg2),STK(arg1)); continue;\r
+ case _OP_MUL: _ARITH_(*,TARGET,STK(arg2),STK(arg1)); continue;\r
+ case _OP_DIV: _ARITH_NOZERO(/,TARGET,STK(arg2),STK(arg1),_SC("division by zero")); continue;\r
+ case _OP_MOD: ARITH_OP('%',TARGET,STK(arg2),STK(arg1)); continue;\r
+ case _OP_BITW: _GUARD(BW_OP( arg3,TARGET,STK(arg2),STK(arg1))); continue;\r
+ case _OP_RETURN:\r
+ if((ci)->_generator) {\r
+ (ci)->_generator->Kill();\r
+ }\r
+ if(Return(arg0, arg1, temp_reg)){\r
+ assert(traps==0);\r
+ //outres = temp_reg;\r
+ _Swap(outres,temp_reg);\r
+ return true;\r
+ }\r
+ continue;\r
+ case _OP_LOADNULLS:{ for(SQInt32 n=0; n < arg1; n++) STK(arg0+n).Null(); }continue;\r
+ case _OP_LOADROOT: TARGET = _roottable; continue;\r
+ case _OP_LOADBOOL: TARGET = arg1?true:false; continue;\r
+ case _OP_DMOVE: STK(arg0) = STK(arg1); STK(arg2) = STK(arg3); continue;\r
+ case _OP_JMP: ci->_ip += (sarg1); continue;\r
+ //case _OP_JNZ: if(!IsFalse(STK(arg0))) ci->_ip+=(sarg1); continue;\r
+ case _OP_JCMP: \r
+ _GUARD(CMP_OP((CmpOP)arg3,STK(arg2),STK(arg0),temp_reg));\r
+ if(IsFalse(temp_reg)) ci->_ip+=(sarg1);\r
+ continue;\r
+ case _OP_JZ: if(IsFalse(STK(arg0))) ci->_ip+=(sarg1); continue;\r
+ case _OP_GETOUTER: {\r
+ SQClosure *cur_cls = _closure(ci->_closure);\r
+ SQOuter *otr = _outer(cur_cls->_outervalues[arg1]);\r
+ TARGET = *(otr->_valptr);\r
+ }\r
+ continue;\r
+ case _OP_SETOUTER: {\r
+ SQClosure *cur_cls = _closure(ci->_closure);\r
+ SQOuter *otr = _outer(cur_cls->_outervalues[arg1]);\r
+ *(otr->_valptr) = STK(arg2);\r
+ if(arg0 != 0xFF) {\r
+ TARGET = STK(arg2);\r
+ }\r
+ }\r
+ continue;\r
+ case _OP_NEWOBJ: \r
+ switch(arg3) {\r
+ case NOT_TABLE: TARGET = SQTable::Create(_ss(this), arg1); continue;\r
+ case NOT_ARRAY: TARGET = SQArray::Create(_ss(this), 0); _array(TARGET)->Reserve(arg1); continue;\r
+ case NOT_CLASS: _GUARD(CLASS_OP(TARGET,arg1,arg2)); continue;\r
+ default: assert(0); continue;\r
+ }\r
+ case _OP_APPENDARRAY: \r
+ {\r
+ SQObject val;\r
+ val._unVal.raw = 0;\r
+ switch(arg2) {\r
+ case AAT_STACK:\r
+ val = STK(arg1); break;\r
+ case AAT_LITERAL:\r
+ val = ci->_literals[arg1]; break;\r
+ case AAT_INT:\r
+ val._type = OT_INTEGER;\r
+#ifndef _SQ64\r
+ val._unVal.nInteger = (SQInteger)arg1; \r
+#else\r
+ val._unVal.nInteger = (SQInteger)((SQUnsignedInteger32)arg1);\r
+#endif\r
+ break;\r
+ case AAT_FLOAT:\r
+ val._type = OT_FLOAT;\r
+ val._unVal.fFloat = *((SQFloat *)&arg1);\r
+ break;\r
+ case AAT_BOOL:\r
+ val._type = OT_BOOL;\r
+ val._unVal.nInteger = arg1;\r
+ break;\r
+ default: assert(0); break;\r
+\r
+ }\r
+ _array(STK(arg0))->Append(val); continue;\r
+ }\r
+ case _OP_COMPARITH: {\r
+ SQInteger selfidx = (((SQUnsignedInteger)arg1&0xFFFF0000)>>16);\r
+ _GUARD(DerefInc(arg3, TARGET, STK(selfidx), STK(arg2), STK(arg1&0x0000FFFF), false, selfidx)); \r
+ }\r
+ continue;\r
+ case _OP_INC: {SQObjectPtr o(sarg3); _GUARD(DerefInc('+',TARGET, STK(arg1), STK(arg2), o, false, arg1));} continue;\r
+ case _OP_INCL: {\r
+ SQObjectPtr &a = STK(arg1);\r
+ if(type(a) == OT_INTEGER) {\r
+ a._unVal.nInteger = _integer(a) + sarg3;\r
+ }\r
+ else {\r
+ SQObjectPtr o(sarg3); //_GUARD(LOCAL_INC('+',TARGET, STK(arg1), o));\r
+ _ARITH_(+,a,a,o);\r
+ }\r
+ } continue;\r
+ case _OP_PINC: {SQObjectPtr o(sarg3); _GUARD(DerefInc('+',TARGET, STK(arg1), STK(arg2), o, true, arg1));} continue;\r
+ case _OP_PINCL: {\r
+ SQObjectPtr &a = STK(arg1);\r
+ if(type(a) == OT_INTEGER) {\r
+ TARGET = a;\r
+ a._unVal.nInteger = _integer(a) + sarg3;\r
+ }\r
+ else {\r
+ SQObjectPtr o(sarg3); _GUARD(PLOCAL_INC('+',TARGET, STK(arg1), o));\r
+ }\r
+ \r
+ } continue;\r
+ case _OP_CMP: _GUARD(CMP_OP((CmpOP)arg3,STK(arg2),STK(arg1),TARGET)) continue;\r
+ case _OP_EXISTS: TARGET = Get(STK(arg1), STK(arg2), temp_reg, true,DONT_FALL_BACK)?true:false;continue;\r
+ case _OP_INSTANCEOF: \r
+ if(type(STK(arg1)) != OT_CLASS)\r
+ {Raise_Error(_SC("cannot apply instanceof between a %s and a %s"),GetTypeName(STK(arg1)),GetTypeName(STK(arg2))); SQ_THROW();}\r
+ TARGET = (type(STK(arg2)) == OT_INSTANCE) ? (_instance(STK(arg2))->InstanceOf(_class(STK(arg1)))?true:false) : false;\r
+ continue;\r
+ case _OP_AND: \r
+ if(IsFalse(STK(arg2))) {\r
+ TARGET = STK(arg2);\r
+ ci->_ip += (sarg1);\r
+ }\r
+ continue;\r
+ case _OP_OR:\r
+ if(!IsFalse(STK(arg2))) {\r
+ TARGET = STK(arg2);\r
+ ci->_ip += (sarg1);\r
+ }\r
+ continue;\r
+ case _OP_NEG: _GUARD(NEG_OP(TARGET,STK(arg1))); continue;\r
+ case _OP_NOT: TARGET = IsFalse(STK(arg1)); continue;\r
+ case _OP_BWNOT:\r
+ if(type(STK(arg1)) == OT_INTEGER) {\r
+ SQInteger t = _integer(STK(arg1));\r
+ TARGET = SQInteger(~t);\r
+ continue;\r
+ }\r
+ Raise_Error(_SC("attempt to perform a bitwise op on a %s"), GetTypeName(STK(arg1)));\r
+ SQ_THROW();\r
+ case _OP_CLOSURE: {\r
+ SQClosure *c = ci->_closure._unVal.pClosure;\r
+ SQFunctionProto *fp = c->_function;\r
+ if(!CLOSURE_OP(TARGET,fp->_functions[arg1]._unVal.pFunctionProto)) { SQ_THROW(); }\r
+ continue;\r
+ }\r
+ case _OP_YIELD:{\r
+ if(ci->_generator) {\r
+ if(sarg1 != MAX_FUNC_STACKSIZE) temp_reg = STK(arg1);\r
+ _GUARD(ci->_generator->Yield(this,arg2));\r
+ traps -= ci->_etraps;\r
+ if(sarg1 != MAX_FUNC_STACKSIZE) _Swap(STK(arg1),temp_reg);//STK(arg1) = temp_reg;\r
+ }\r
+ else { Raise_Error(_SC("trying to yield a '%s',only genenerator can be yielded"), GetTypeName(ci->_generator)); SQ_THROW();}\r
+ if(Return(arg0, arg1, temp_reg)){\r
+ assert(traps == 0);\r
+ outres = temp_reg;\r
+ return true;\r
+ }\r
+ \r
+ }\r
+ continue;\r
+ case _OP_RESUME:\r
+ if(type(STK(arg1)) != OT_GENERATOR){ Raise_Error(_SC("trying to resume a '%s',only genenerator can be resumed"), GetTypeName(STK(arg1))); SQ_THROW();}\r
+ _GUARD(_generator(STK(arg1))->Resume(this, TARGET));\r
+ traps += ci->_etraps;\r
+ continue;\r
+ case _OP_FOREACH:{ int tojump;\r
+ _GUARD(FOREACH_OP(STK(arg0),STK(arg2),STK(arg2+1),STK(arg2+2),arg2,sarg1,tojump));\r
+ ci->_ip += tojump; }\r
+ continue;\r
+ case _OP_POSTFOREACH:\r
+ assert(type(STK(arg0)) == OT_GENERATOR);\r
+ if(_generator(STK(arg0))->_state == SQGenerator::eDead) \r
+ ci->_ip += (sarg1 - 1);\r
+ continue;\r
+ case _OP_CLONE: _GUARD(Clone(STK(arg1), TARGET)); continue;\r
+ case _OP_TYPEOF: _GUARD(TypeOf(STK(arg1), TARGET)) continue;\r
+ case _OP_PUSHTRAP:{\r
+ SQInstruction *_iv = _closure(ci->_closure)->_function->_instructions;\r
+ _etraps.push_back(SQExceptionTrap(_top,_stackbase, &_iv[(ci->_ip-_iv)+arg1], arg0)); traps++;\r
+ ci->_etraps++;\r
+ }\r
+ continue;\r
+ case _OP_POPTRAP: {\r
+ for(SQInteger i = 0; i < arg0; i++) {\r
+ _etraps.pop_back(); traps--;\r
+ ci->_etraps--;\r
+ }\r
+ }\r
+ continue;\r
+ case _OP_THROW: Raise_Error(TARGET); SQ_THROW(); continue;\r
+ case _OP_NEWSLOTA:\r
+ _GUARD(NewSlotA(STK(arg1),STK(arg2),STK(arg3),(arg0&NEW_SLOT_ATTRIBUTES_FLAG) ? STK(arg2-1) : SQObjectPtr(),(arg0&NEW_SLOT_STATIC_FLAG)?true:false,false));\r
+ continue;\r
+ case _OP_GETBASE:{\r
+ SQClosure *clo = _closure(ci->_closure);\r
+ if(clo->_base) {\r
+ TARGET = clo->_base;\r
+ }\r
+ else {\r
+ TARGET.Null();\r
+ }\r
+ continue;\r
+ }\r
+ case _OP_CLOSE:\r
+ if(_openouters) CloseOuters(&(STK(arg1)));\r
+ continue;\r
+ }\r
+ \r
+ }\r
+ }\r
+exception_trap:\r
+ {\r
+ SQObjectPtr currerror = _lasterror;\r
+// dumpstack(_stackbase);\r
+// SQInteger n = 0;\r
+ SQInteger last_top = _top;\r
+ \r
+ if(_ss(this)->_notifyallexceptions || (!traps && raiseerror)) CallErrorHandler(currerror);\r
+\r
+ while( ci ) {\r
+ if(ci->_etraps > 0) {\r
+ SQExceptionTrap &et = _etraps.top();\r
+ ci->_ip = et._ip;\r
+ _top = et._stacksize;\r
+ _stackbase = et._stackbase;\r
+ _stack._vals[_stackbase + et._extarget] = currerror;\r
+ _etraps.pop_back(); traps--; ci->_etraps--;\r
+ while(last_top >= _top) _stack._vals[last_top--].Null();\r
+ goto exception_restore;\r
+ }\r
+ else if (_debughook) { \r
+ //notify debugger of a "return"\r
+ //even if it really an exception unwinding the stack\r
+ for(SQInteger i = 0; i < ci->_ncalls; i++) {\r
+ CallDebugHook(_SC('r'));\r
+ }\r
+ }\r
+ if(ci->_generator) ci->_generator->Kill();\r
+ bool mustbreak = ci && ci->_root;\r
+ LeaveFrame();\r
+ if(mustbreak) break;\r
+ }\r
+ \r
+ _lasterror = currerror;\r
+ return false;\r
+ }\r
+ assert(0);\r
+}\r
+\r
+bool SQVM::CreateClassInstance(SQClass *theclass, SQObjectPtr &inst, SQObjectPtr &constructor)\r
+{\r
+ inst = theclass->CreateInstance();\r
+ if(!theclass->GetConstructor(constructor)) {\r
+ constructor.Null();\r
+ }\r
+ return true;\r
+}\r
+\r
+void SQVM::CallErrorHandler(SQObjectPtr &error)\r
+{\r
+ if(type(_errorhandler) != OT_NULL) {\r
+ SQObjectPtr out;\r
+ Push(_roottable); Push(error);\r
+ Call(_errorhandler, 2, _top-2, out,SQFalse);\r
+ Pop(2);\r
+ }\r
+}\r
+\r
+\r
+void SQVM::CallDebugHook(SQInteger type,SQInteger forcedline)\r
+{\r
+ _debughook = false;\r
+ SQFunctionProto *func=_closure(ci->_closure)->_function;\r
+ if(_debughook_native) {\r
+ const SQChar *src = type(func->_sourcename) == OT_STRING?_stringval(func->_sourcename):NULL;\r
+ const SQChar *fname = type(func->_name) == OT_STRING?_stringval(func->_name):NULL;\r
+ SQInteger line = forcedline?forcedline:func->GetLine(ci->_ip);\r
+ _debughook_native(this,type,src,line,fname);\r
+ }\r
+ else {\r
+ SQObjectPtr temp_reg;\r
+ SQInteger nparams=5;\r
+ Push(_roottable); Push(type); Push(func->_sourcename); Push(forcedline?forcedline:func->GetLine(ci->_ip)); Push(func->_name);\r
+ Call(_debughook_closure,nparams,_top-nparams,temp_reg,SQFalse);\r
+ Pop(nparams);\r
+ }\r
+ _debughook = true;\r
+}\r
+\r
+bool SQVM::CallNative(SQNativeClosure *nclosure, SQInteger nargs, SQInteger newbase, SQObjectPtr &retval, bool &suspend)\r
+{\r
+ SQInteger nparamscheck = nclosure->_nparamscheck;\r
+ SQInteger newtop = newbase + nargs + nclosure->_noutervalues;\r
+ \r
+ if (_nnativecalls + 1 > MAX_NATIVE_CALLS) {\r
+ Raise_Error(_SC("Native stack overflow"));\r
+ return false;\r
+ }\r
+\r
+ if(nparamscheck && (((nparamscheck > 0) && (nparamscheck != nargs)) ||\r
+ ((nparamscheck < 0) && (nargs < (-nparamscheck)))))\r
+ {\r
+ Raise_Error(_SC("wrong number of parameters"));\r
+ return false;\r
+ }\r
+\r
+ SQInteger tcs;\r
+ SQIntVec &tc = nclosure->_typecheck;\r
+ if((tcs = tc.size())) {\r
+ for(SQInteger i = 0; i < nargs && i < tcs; i++) {\r
+ if((tc._vals[i] != -1) && !(type(_stack._vals[newbase+i]) & tc._vals[i])) {\r
+ Raise_ParamTypeError(i,tc._vals[i],type(_stack._vals[newbase+i]));\r
+ return false;\r
+ }\r
+ }\r
+ }\r
+\r
+ if(!EnterFrame(newbase, newtop, false)) return false;\r
+ ci->_closure = nclosure;\r
+\r
+ SQInteger outers = nclosure->_noutervalues;\r
+ for (SQInteger i = 0; i < outers; i++) {\r
+ _stack._vals[newbase+nargs+i] = nclosure->_outervalues[i];\r
+ }\r
+ if(nclosure->_env) {\r
+ _stack._vals[newbase] = nclosure->_env->_obj;\r
+ }\r
+\r
+ _nnativecalls++;\r
+ SQInteger ret = (nclosure->_function)(this);\r
+ _nnativecalls--;\r
+\r
+ suspend = false;\r
+ if (ret == SQ_SUSPEND_FLAG) {\r
+ suspend = true;\r
+ }\r
+ else if (ret < 0) {\r
+ LeaveFrame();\r
+ Raise_Error(_lasterror);\r
+ return false;\r
+ }\r
+ if(ret) {\r
+ retval = _stack._vals[_top-1];\r
+ }\r
+ else {\r
+ retval.Null();\r
+ }\r
+ //retval = ret ? _stack._vals[_top-1] : _null_;\r
+ LeaveFrame();\r
+ return true;\r
+}\r
+\r
+#define FALLBACK_OK 0\r
+#define FALLBACK_NO_MATCH 1\r
+#define FALLBACK_ERROR 2\r
+\r
+bool SQVM::Get(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest,bool raw, SQInteger selfidx)\r
+{\r
+ switch(type(self)){\r
+ case OT_TABLE:\r
+ if(_table(self)->Get(key,dest))return true;\r
+ break;\r
+ case OT_ARRAY:\r
+ if(sq_isnumeric(key)) { if(_array(self)->Get(tointeger(key),dest)) { return true; } if(selfidx != EXISTS_FALL_BACK) Raise_IdxError(key); return false; }\r
+ break;\r
+ case OT_INSTANCE:\r
+ if(_instance(self)->Get(key,dest)) return true;\r
+ break;\r
+ case OT_CLASS: \r
+ if(_class(self)->Get(key,dest)) return true;\r
+ break;\r
+ case OT_STRING:\r
+ if(sq_isnumeric(key)){\r
+ SQInteger n = tointeger(key);\r
+ if(abs((int)n) < _string(self)->_len) {\r
+ if(n < 0) n = _string(self)->_len - n;\r
+ dest = SQInteger(_stringval(self)[n]);\r
+ return true;\r
+ }\r
+ if(selfidx != EXISTS_FALL_BACK) Raise_IdxError(key);\r
+ return false;\r
+ }\r
+ break;\r
+ default:break; //shut up compiler\r
+ }\r
+ if(!raw) {\r
+ switch(FallBackGet(self,key,dest)) {\r
+ case FALLBACK_OK: return true; //okie\r
+ case FALLBACK_NO_MATCH: break; //keep falling back\r
+ case FALLBACK_ERROR: return false; // the metamethod failed\r
+ }\r
+ if(InvokeDefaultDelegate(self,key,dest)) {\r
+ return true;\r
+ }\r
+ }\r
+//#ifdef ROOT_FALLBACK\r
+ if(selfidx == 0) {\r
+ if(_table(_roottable)->Get(key,dest)) return true;\r
+ }\r
+//#endif\r
+ if(selfidx != EXISTS_FALL_BACK) Raise_IdxError(key);\r
+ return false;\r
+}\r
+\r
+bool SQVM::InvokeDefaultDelegate(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest)\r
+{\r
+ SQTable *ddel = NULL;\r
+ switch(type(self)) {\r
+ case OT_CLASS: ddel = _class_ddel; break;\r
+ case OT_TABLE: ddel = _table_ddel; break;\r
+ case OT_ARRAY: ddel = _array_ddel; break;\r
+ case OT_STRING: ddel = _string_ddel; break;\r
+ case OT_INSTANCE: ddel = _instance_ddel; break;\r
+ case OT_INTEGER:case OT_FLOAT:case OT_BOOL: ddel = _number_ddel; break;\r
+ case OT_GENERATOR: ddel = _generator_ddel; break;\r
+ case OT_CLOSURE: case OT_NATIVECLOSURE: ddel = _closure_ddel; break;\r
+ case OT_THREAD: ddel = _thread_ddel; break;\r
+ case OT_WEAKREF: ddel = _weakref_ddel; break;\r
+ default: return false;\r
+ }\r
+ return ddel->Get(key,dest);\r
+}\r
+\r
+\r
+SQInteger SQVM::FallBackGet(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest)\r
+{\r
+ switch(type(self)){\r
+ case OT_TABLE:\r
+ case OT_USERDATA:\r
+ //delegation\r
+ if(_delegable(self)->_delegate) {\r
+ if(Get(SQObjectPtr(_delegable(self)->_delegate),key,dest,false,DONT_FALL_BACK)) return FALLBACK_OK; \r
+ }\r
+ else {\r
+ return FALLBACK_NO_MATCH;\r
+ }\r
+ //go through\r
+ case OT_INSTANCE: {\r
+ SQObjectPtr closure;\r
+ if(_delegable(self)->GetMetaMethod(this, MT_GET, closure)) {\r
+ Push(self);Push(key);\r
+ _nmetamethodscall++;\r
+ AutoDec ad(&_nmetamethodscall);\r
+ if(Call(closure, 2, _top - 2, dest, SQFalse)) {\r
+ Pop(2);\r
+ return FALLBACK_OK;\r
+ }\r
+ else {\r
+ Pop(2);\r
+ if(type(_lasterror) != OT_NULL) { //NULL means "clean failure" (not found)\r
+ return FALLBACK_ERROR;\r
+ }\r
+ }\r
+ }\r
+ }\r
+ break;\r
+ default: break;//shutup GCC 4.x\r
+ }\r
+ // no metamethod or no fallback type\r
+ return FALLBACK_NO_MATCH;\r
+}\r
+\r
+bool SQVM::Set(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val,SQInteger selfidx)\r
+{\r
+ switch(type(self)){\r
+ case OT_TABLE:\r
+ if(_table(self)->Set(key,val)) return true;\r
+ break;\r
+ case OT_INSTANCE:\r
+ if(_instance(self)->Set(key,val)) return true;\r
+ break;\r
+ case OT_ARRAY:\r
+ if(!sq_isnumeric(key)) { Raise_Error(_SC("indexing %s with %s"),GetTypeName(self),GetTypeName(key)); return false; }\r
+ if(!_array(self)->Set(tointeger(key),val)) {\r
+ Raise_IdxError(key);\r
+ return false;\r
+ }\r
+ return true;\r
+ default:\r
+ Raise_Error(_SC("trying to set '%s'"),GetTypeName(self));\r
+ return false;\r
+ }\r
+\r
+ switch(FallBackSet(self,key,val)) {\r
+ case FALLBACK_OK: return true; //okie\r
+ case FALLBACK_NO_MATCH: break; //keep falling back\r
+ case FALLBACK_ERROR: return false; // the metamethod failed\r
+ }\r
+ if(selfidx == 0) {\r
+ if(_table(_roottable)->Set(key,val))\r
+ return true;\r
+ }\r
+ Raise_IdxError(key);\r
+ return false;\r
+}\r
+\r
+SQInteger SQVM::FallBackSet(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val)\r
+{\r
+ switch(type(self)) {\r
+ case OT_TABLE:\r
+ if(_table(self)->_delegate) {\r
+ if(Set(_table(self)->_delegate,key,val,DONT_FALL_BACK)) return FALLBACK_OK;\r
+ }\r
+ //keps on going\r
+ case OT_INSTANCE:\r
+ case OT_USERDATA:{\r
+ SQObjectPtr closure;\r
+ SQObjectPtr t;\r
+ if(_delegable(self)->GetMetaMethod(this, MT_SET, closure)) {\r
+ Push(self);Push(key);Push(val);\r
+ _nmetamethodscall++;\r
+ AutoDec ad(&_nmetamethodscall);\r
+ if(Call(closure, 3, _top - 3, t, SQFalse)) {\r
+ Pop(3);\r
+ return FALLBACK_OK;\r
+ }\r
+ else {\r
+ if(type(_lasterror) != OT_NULL) { //NULL means "clean failure" (not found)\r
+ //error\r
+ Pop(3);\r
+ return FALLBACK_ERROR;\r
+ }\r
+ }\r
+ }\r
+ }\r
+ break;\r
+ default: break;//shutup GCC 4.x\r
+ }\r
+ // no metamethod or no fallback type\r
+ return FALLBACK_NO_MATCH;\r
+}\r
+\r
+bool SQVM::Clone(const SQObjectPtr &self,SQObjectPtr &target)\r
+{\r
+ SQObjectPtr temp_reg;\r
+ SQObjectPtr newobj;\r
+ switch(type(self)){\r
+ case OT_TABLE:\r
+ newobj = _table(self)->Clone();\r
+ goto cloned_mt;\r
+ case OT_INSTANCE: {\r
+ newobj = _instance(self)->Clone(_ss(this));\r
+cloned_mt:\r
+ SQObjectPtr closure;\r
+ if(_delegable(newobj)->_delegate && _delegable(newobj)->GetMetaMethod(this,MT_CLONED,closure)) {\r
+ Push(newobj);\r
+ Push(self);\r
+ if(!CallMetaMethod(closure,MT_CLONED,2,temp_reg))\r
+ return false;\r
+ }\r
+ }\r
+ target = newobj;\r
+ return true;\r
+ case OT_ARRAY: \r
+ target = _array(self)->Clone();\r
+ return true;\r
+ default: \r
+ Raise_Error(_SC("cloning a %s"), GetTypeName(self));\r
+ return false;\r
+ }\r
+}\r
+\r
+bool SQVM::NewSlotA(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val,const SQObjectPtr &attrs,bool bstatic,bool raw)\r
+{\r
+ if(type(self) != OT_CLASS) {\r
+ Raise_Error(_SC("object must be a class"));\r
+ return false;\r
+ }\r
+ SQClass *c = _class(self);\r
+ if(!raw) {\r
+ SQObjectPtr &mm = c->_metamethods[MT_NEWMEMBER];\r
+ if(type(mm) != OT_NULL ) {\r
+ Push(self); Push(key); Push(val);\r
+ Push(attrs);\r
+ Push(bstatic);\r
+ return CallMetaMethod(mm,MT_NEWMEMBER,5,temp_reg);\r
+ }\r
+ }\r
+ if(!NewSlot(self, key, val,bstatic))\r
+ return false;\r
+ if(type(attrs) != OT_NULL) {\r
+ c->SetAttributes(key,attrs);\r
+ }\r
+ return true;\r
+}\r
+\r
+bool SQVM::NewSlot(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val,bool bstatic)\r
+{\r
+ if(type(key) == OT_NULL) { Raise_Error(_SC("null cannot be used as index")); return false; }\r
+ switch(type(self)) {\r
+ case OT_TABLE: {\r
+ bool rawcall = true;\r
+ if(_table(self)->_delegate) {\r
+ SQObjectPtr res;\r
+ if(!_table(self)->Get(key,res)) {\r
+ SQObjectPtr closure;\r
+ if(_delegable(self)->_delegate && _delegable(self)->GetMetaMethod(this,MT_NEWSLOT,closure)) {\r
+ Push(self);Push(key);Push(val);\r
+ if(!CallMetaMethod(closure,MT_NEWSLOT,3,res)) {\r
+ return false;\r
+ }\r
+ rawcall = false;\r
+ }\r
+ else {\r
+ rawcall = true;\r
+ }\r
+ }\r
+ }\r
+ if(rawcall) _table(self)->NewSlot(key,val); //cannot fail\r
+ \r
+ break;}\r
+ case OT_INSTANCE: {\r
+ SQObjectPtr res;\r
+ SQObjectPtr closure;\r
+ if(_delegable(self)->_delegate && _delegable(self)->GetMetaMethod(this,MT_NEWSLOT,closure)) {\r
+ Push(self);Push(key);Push(val);\r
+ if(!CallMetaMethod(closure,MT_NEWSLOT,3,res)) {\r
+ return false;\r
+ }\r
+ break;\r
+ }\r
+ Raise_Error(_SC("class instances do not support the new slot operator"));\r
+ return false;\r
+ break;}\r
+ case OT_CLASS: \r
+ if(!_class(self)->NewSlot(_ss(this),key,val,bstatic)) {\r
+ if(_class(self)->_locked) {\r
+ Raise_Error(_SC("trying to modify a class that has already been instantiated"));\r
+ return false;\r
+ }\r
+ else {\r
+ SQObjectPtr oval = PrintObjVal(key);\r
+ Raise_Error(_SC("the property '%s' already exists"),_stringval(oval));\r
+ return false;\r
+ }\r
+ }\r
+ break;\r
+ default:\r
+ Raise_Error(_SC("indexing %s with %s"),GetTypeName(self),GetTypeName(key));\r
+ return false;\r
+ break;\r
+ }\r
+ return true;\r
+}\r
+\r
+\r
+\r
+bool SQVM::DeleteSlot(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &res)\r
+{\r
+ switch(type(self)) {\r
+ case OT_TABLE:\r
+ case OT_INSTANCE:\r
+ case OT_USERDATA: {\r
+ SQObjectPtr t;\r
+ //bool handled = false;\r
+ SQObjectPtr closure;\r
+ if(_delegable(self)->_delegate && _delegable(self)->GetMetaMethod(this,MT_DELSLOT,closure)) {\r
+ Push(self);Push(key);\r
+ return CallMetaMethod(closure,MT_DELSLOT,2,res);\r
+ }\r
+ else {\r
+ if(type(self) == OT_TABLE) {\r
+ if(_table(self)->Get(key,t)) {\r
+ _table(self)->Remove(key);\r
+ }\r
+ else {\r
+ Raise_IdxError((SQObject &)key);\r
+ return false;\r
+ }\r
+ }\r
+ else {\r
+ Raise_Error(_SC("cannot delete a slot from %s"),GetTypeName(self));\r
+ return false;\r
+ }\r
+ }\r
+ res = t;\r
+ }\r
+ break;\r
+ default:\r
+ Raise_Error(_SC("attempt to delete a slot from a %s"),GetTypeName(self));\r
+ return false;\r
+ }\r
+ return true;\r
+}\r
+\r
+bool SQVM::Call(SQObjectPtr &closure,SQInteger nparams,SQInteger stackbase,SQObjectPtr &outres,SQBool raiseerror)\r
+{\r
+#ifdef _DEBUG\r
+SQInteger prevstackbase = _stackbase;\r
+#endif\r
+ switch(type(closure)) {\r
+ case OT_CLOSURE:\r
+ return Execute(closure, nparams, stackbase, outres, raiseerror);\r
+ break;\r
+ case OT_NATIVECLOSURE:{\r
+ bool suspend;\r
+ return CallNative(_nativeclosure(closure), nparams, stackbase, outres,suspend);\r
+ \r
+ }\r
+ break;\r
+ case OT_CLASS: {\r
+ SQObjectPtr constr;\r
+ SQObjectPtr temp;\r
+ CreateClassInstance(_class(closure),outres,constr);\r
+ if(type(constr) != OT_NULL) {\r
+ _stack[stackbase] = outres;\r
+ return Call(constr,nparams,stackbase,temp,raiseerror);\r
+ }\r
+ return true;\r
+ }\r
+ break;\r
+ default:\r
+ return false;\r
+ }\r
+#ifdef _DEBUG\r
+ if(!_suspended) {\r
+ assert(_stackbase == prevstackbase);\r
+ }\r
+#endif\r
+ return true;\r
+}\r
+\r
+bool SQVM::CallMetaMethod(SQObjectPtr &closure,SQMetaMethod mm,SQInteger nparams,SQObjectPtr &outres)\r
+{\r
+ //SQObjectPtr closure;\r
+ \r
+ _nmetamethodscall++;\r
+ if(Call(closure, nparams, _top - nparams, outres, SQFalse)) {\r
+ _nmetamethodscall--;\r
+ Pop(nparams);\r
+ return true;\r
+ }\r
+ _nmetamethodscall--;\r
+ //}\r
+ Pop(nparams);\r
+ return false;\r
+}\r
+\r
+void SQVM::FindOuter(SQObjectPtr &target, SQObjectPtr *stackindex)\r
+{\r
+ SQOuter **pp = &_openouters;\r
+ SQOuter *p;\r
+ SQOuter *otr;\r
+\r
+ while ((p = *pp) != NULL && p->_valptr >= stackindex) {\r
+ if (p->_valptr == stackindex) {\r
+ target = SQObjectPtr(p);\r
+ return;\r
+ }\r
+ pp = &p->_next;\r
+ }\r
+ otr = SQOuter::Create(_ss(this), stackindex);\r
+ otr->_next = *pp;\r
+ otr->_idx = (stackindex - _stack._vals);\r
+ __ObjAddRef(otr);\r
+ *pp = otr;\r
+ target = SQObjectPtr(otr);\r
+}\r
+\r
+bool SQVM::EnterFrame(SQInteger newbase, SQInteger newtop, bool tailcall)\r
+{\r
+ if( !tailcall ) {\r
+ if( _callsstacksize == _alloccallsstacksize ) {\r
+ GrowCallStack();\r
+ }\r
+ ci = &_callsstack[_callsstacksize++];\r
+ ci->_prevstkbase = (SQInt32)(newbase - _stackbase);\r
+ ci->_prevtop = (SQInt32)(_top - _stackbase);\r
+ ci->_etraps = 0;\r
+ ci->_ncalls = 1;\r
+ ci->_generator = NULL;\r
+ ci->_root = SQFalse;\r
+ }\r
+ else {\r
+ ci->_ncalls++;\r
+ }\r
+\r
+ _stackbase = newbase;\r
+ _top = newtop;\r
+ if(newtop + MIN_STACK_OVERHEAD > (SQInteger)_stack.size()) {\r
+ if(_nmetamethodscall) {\r
+ Raise_Error(_SC("stack overflow, cannot resize stack while in a metamethod"));\r
+ return false;\r
+ }\r
+ _stack.resize(_stack.size() + (MIN_STACK_OVERHEAD << 2));\r
+ RelocateOuters();\r
+ }\r
+ return true;\r
+}\r
+\r
+void SQVM::LeaveFrame() {\r
+ SQInteger last_top = _top;\r
+ SQInteger last_stackbase = _stackbase;\r
+ SQInteger css = --_callsstacksize;\r
+\r
+ /* First clean out the call stack frame */\r
+ ci->_closure.Null();\r
+ _stackbase -= ci->_prevstkbase;\r
+ _top = _stackbase + ci->_prevtop;\r
+ ci = (css) ? &_callsstack[css-1] : NULL;\r
+\r
+ if(_openouters) CloseOuters(&(_stack._vals[last_stackbase]));\r
+ while (last_top >= _top) {\r
+ _stack._vals[last_top--].Null();\r
+ }\r
+}\r
+\r
+void SQVM::RelocateOuters()\r
+{\r
+ SQOuter *p = _openouters;\r
+ while (p) {\r
+ p->_valptr = _stack._vals + p->_idx;\r
+ p = p->_next;\r
+ }\r
+}\r
+\r
+void SQVM::CloseOuters(SQObjectPtr *stackindex) {\r
+ SQOuter *p;\r
+ while ((p = _openouters) != NULL && p->_valptr >= stackindex) {\r
+ p->_value = *(p->_valptr);\r
+ p->_valptr = &p->_value;\r
+ _openouters = p->_next;\r
+ __ObjRelease(p);\r
+ }\r
+}\r
+\r
+void SQVM::Remove(SQInteger n) {\r
+ n = (n >= 0)?n + _stackbase - 1:_top + n;\r
+ for(SQInteger i = n; i < _top; i++){\r
+ _stack[i] = _stack[i+1];\r
+ }\r
+ _stack[_top].Null();\r
+ _top--;\r
+}\r
+\r
+void SQVM::Pop() {\r
+ _stack[--_top].Null();\r
+}\r
+\r
+void SQVM::Pop(SQInteger n) {\r
+ for(SQInteger i = 0; i < n; i++){\r
+ _stack[--_top].Null();\r
+ }\r
+}\r
+\r
+void SQVM::PushNull() { _stack[_top++].Null(); }\r
+void SQVM::Push(const SQObjectPtr &o) { _stack[_top++] = o; }\r
+SQObjectPtr &SQVM::Top() { return _stack[_top-1]; }\r
+SQObjectPtr &SQVM::PopGet() { return _stack[--_top]; }\r
+SQObjectPtr &SQVM::GetUp(SQInteger n) { return _stack[_top+n]; }\r
+SQObjectPtr &SQVM::GetAt(SQInteger n) { return _stack[n]; }\r
+\r
+#ifdef _DEBUG_DUMP\r
+void SQVM::dumpstack(SQInteger stackbase,bool dumpall)\r
+{\r
+ SQInteger size=dumpall?_stack.size():_top;\r
+ SQInteger n=0;\r
+ scprintf(_SC("\n>>>>stack dump<<<<\n"));\r
+ CallInfo &ci=_callsstack[_callsstacksize-1];\r
+ scprintf(_SC("IP: %p\n"),ci._ip);\r
+ scprintf(_SC("prev stack base: %d\n"),ci._prevstkbase);\r
+ scprintf(_SC("prev top: %d\n"),ci._prevtop);\r
+ for(SQInteger i=0;i<size;i++){\r
+ SQObjectPtr &obj=_stack[i]; \r
+ if(stackbase==i)scprintf(_SC(">"));else scprintf(_SC(" "));\r
+ scprintf(_SC("[%d]:"),n);\r
+ switch(type(obj)){\r
+ case OT_FLOAT: scprintf(_SC("FLOAT %.3f"),_float(obj));break;\r
+ case OT_INTEGER: scprintf(_SC("INTEGER %d"),_integer(obj));break;\r
+ case OT_BOOL: scprintf(_SC("BOOL %s"),_integer(obj)?"true":"false");break;\r
+ case OT_STRING: scprintf(_SC("STRING %s"),_stringval(obj));break;\r
+ case OT_NULL: scprintf(_SC("NULL")); break;\r
+ case OT_TABLE: scprintf(_SC("TABLE %p[%p]"),_table(obj),_table(obj)->_delegate);break;\r
+ case OT_ARRAY: scprintf(_SC("ARRAY %p"),_array(obj));break;\r
+ case OT_CLOSURE: scprintf(_SC("CLOSURE [%p]"),_closure(obj));break;\r
+ case OT_NATIVECLOSURE: scprintf(_SC("NATIVECLOSURE"));break;\r
+ case OT_USERDATA: scprintf(_SC("USERDATA %p[%p]"),_userdataval(obj),_userdata(obj)->_delegate);break;\r
+ case OT_GENERATOR: scprintf(_SC("GENERATOR %p"),_generator(obj));break;\r
+ case OT_THREAD: scprintf(_SC("THREAD [%p]"),_thread(obj));break;\r
+ case OT_USERPOINTER: scprintf(_SC("USERPOINTER %p"),_userpointer(obj));break;\r
+ case OT_CLASS: scprintf(_SC("CLASS %p"),_class(obj));break;\r
+ case OT_INSTANCE: scprintf(_SC("INSTANCE %p"),_instance(obj));break;\r
+ case OT_WEAKREF: scprintf(_SC("WEAKERF %p"),_weakref(obj));break;\r
+ default:\r
+ assert(0);\r
+ break;\r
+ };\r
+ scprintf(_SC("\n"));\r
+ ++n;\r
+ }\r
+}\r
+\r
+\r
+\r
+#endif\r
projects / supertux.git / blobdiff