diff options
Diffstat (limited to 'squirrel_3_0_1_stable/squirrel/sqfuncstate.cpp')
| -rw-r--r-- | squirrel_3_0_1_stable/squirrel/sqfuncstate.cpp | 652 |
1 files changed, 652 insertions, 0 deletions
diff --git a/squirrel_3_0_1_stable/squirrel/sqfuncstate.cpp b/squirrel_3_0_1_stable/squirrel/sqfuncstate.cpp new file mode 100644 index 000000000..9e236c7e7 --- /dev/null +++ b/squirrel_3_0_1_stable/squirrel/sqfuncstate.cpp @@ -0,0 +1,652 @@ +/*
+ see copyright notice in squirrel.h
+*/
+#include "sqpcheader.h"
+#ifndef NO_COMPILER
+#include "sqcompiler.h"
+#include "sqstring.h"
+#include "sqfuncproto.h"
+#include "sqtable.h"
+#include "sqopcodes.h"
+#include "sqfuncstate.h"
+
+#ifdef _DEBUG_DUMP
+SQInstructionDesc g_InstrDesc[]={
+ {_SC("_OP_LINE")},
+ {_SC("_OP_LOAD")},
+ {_SC("_OP_LOADINT")},
+ {_SC("_OP_LOADFLOAT")},
+ {_SC("_OP_DLOAD")},
+ {_SC("_OP_TAILCALL")},
+ {_SC("_OP_CALL")},
+ {_SC("_OP_PREPCALL")},
+ {_SC("_OP_PREPCALLK")},
+ {_SC("_OP_GETK")},
+ {_SC("_OP_MOVE")},
+ {_SC("_OP_NEWSLOT")},
+ {_SC("_OP_DELETE")},
+ {_SC("_OP_SET")},
+ {_SC("_OP_GET")},
+ {_SC("_OP_EQ")},
+ {_SC("_OP_NE")},
+ {_SC("_OP_ADD")},
+ {_SC("_OP_SUB")},
+ {_SC("_OP_MUL")},
+ {_SC("_OP_DIV")},
+ {_SC("_OP_MOD")},
+ {_SC("_OP_BITW")},
+ {_SC("_OP_RETURN")},
+ {_SC("_OP_LOADNULLS")},
+ {_SC("_OP_LOADROOT")},
+ {_SC("_OP_LOADBOOL")},
+ {_SC("_OP_DMOVE")},
+ {_SC("_OP_JMP")},
+ {_SC("_OP_JCMP")},
+ {_SC("_OP_JZ")},
+ {_SC("_OP_SETOUTER")},
+ {_SC("_OP_GETOUTER")},
+ {_SC("_OP_NEWOBJ")},
+ {_SC("_OP_APPENDARRAY")},
+ {_SC("_OP_COMPARITH")},
+ {_SC("_OP_INC")},
+ {_SC("_OP_INCL")},
+ {_SC("_OP_PINC")},
+ {_SC("_OP_PINCL")},
+ {_SC("_OP_CMP")},
+ {_SC("_OP_EXISTS")},
+ {_SC("_OP_INSTANCEOF")},
+ {_SC("_OP_AND")},
+ {_SC("_OP_OR")},
+ {_SC("_OP_NEG")},
+ {_SC("_OP_NOT")},
+ {_SC("_OP_BWNOT")},
+ {_SC("_OP_CLOSURE")},
+ {_SC("_OP_YIELD")},
+ {_SC("_OP_RESUME")},
+ {_SC("_OP_FOREACH")},
+ {_SC("_OP_POSTFOREACH")},
+ {_SC("_OP_CLONE")},
+ {_SC("_OP_TYPEOF")},
+ {_SC("_OP_PUSHTRAP")},
+ {_SC("_OP_POPTRAP")},
+ {_SC("_OP_THROW")},
+ {_SC("_OP_NEWSLOTA")},
+ {_SC("_OP_GETBASE")},
+ {_SC("_OP_CLOSE")},
+ {_SC("_OP_JCMP")}
+};
+#endif
+void DumpLiteral(SQObjectPtr &o)
+{
+ switch(type(o)){
+ case OT_STRING: scprintf(_SC("\"%s\""),_stringval(o));break;
+ case OT_FLOAT: scprintf(_SC("{%f}"),_float(o));break;
+ case OT_INTEGER: scprintf(_SC("{") _PRINT_INT_FMT _SC("}"),_integer(o));break;
+ case OT_BOOL: scprintf(_SC("%s"),_integer(o)?_SC("true"):_SC("false"));break;
+ default: scprintf(_SC("(%s %p)"),GetTypeName(o),(void*)_rawval(o));break; break; //shut up compiler
+ }
+}
+
+SQFuncState::SQFuncState(SQSharedState *ss,SQFuncState *parent,CompilerErrorFunc efunc,void *ed)
+{
+ _nliterals = 0;
+ _literals = SQTable::Create(ss,0);
+ _strings = SQTable::Create(ss,0);
+ _sharedstate = ss;
+ _lastline = 0;
+ _optimization = true;
+ _parent = parent;
+ _stacksize = 0;
+ _traps = 0;
+ _returnexp = 0;
+ _varparams = false;
+ _errfunc = efunc;
+ _errtarget = ed;
+ _bgenerator = false;
+ _outers = 0;
+ _ss = ss;
+
+}
+
+void SQFuncState::Error(const SQChar *err)
+{
+ _errfunc(_errtarget,err);
+}
+
+#ifdef _DEBUG_DUMP
+void SQFuncState::Dump(SQFunctionProto *func)
+{
+ SQUnsignedInteger n=0,i;
+ SQInteger si;
+ scprintf(_SC("SQInstruction sizeof %d\n"),sizeof(SQInstruction));
+ scprintf(_SC("SQObject sizeof %d\n"),sizeof(SQObject));
+ scprintf(_SC("--------------------------------------------------------------------\n"));
+ scprintf(_SC("*****FUNCTION [%s]\n"),type(func->_name)==OT_STRING?_stringval(func->_name):_SC("unknown"));
+ scprintf(_SC("-----LITERALS\n"));
+ SQObjectPtr refidx,key,val;
+ SQInteger idx;
+ SQObjectPtrVec templiterals;
+ templiterals.resize(_nliterals);
+ while((idx=_table(_literals)->Next(false,refidx,key,val))!=-1) {
+ refidx=idx;
+ templiterals[_integer(val)]=key;
+ }
+ for(i=0;i<templiterals.size();i++){
+ scprintf(_SC("[%d] "),n);
+ DumpLiteral(templiterals[i]);
+ scprintf(_SC("\n"));
+ n++;
+ }
+ scprintf(_SC("-----PARAMS\n"));
+ if(_varparams)
+ scprintf(_SC("<<VARPARAMS>>\n"));
+ n=0;
+ for(i=0;i<_parameters.size();i++){
+ scprintf(_SC("[%d] "),n);
+ DumpLiteral(_parameters[i]);
+ scprintf(_SC("\n"));
+ n++;
+ }
+ scprintf(_SC("-----LOCALS\n"));
+ for(si=0;si<func->_nlocalvarinfos;si++){
+ SQLocalVarInfo lvi=func->_localvarinfos[si];
+ scprintf(_SC("[%d] %s \t%d %d\n"),lvi._pos,_stringval(lvi._name),lvi._start_op,lvi._end_op);
+ n++;
+ }
+ scprintf(_SC("-----LINE INFO\n"));
+ for(i=0;i<_lineinfos.size();i++){
+ SQLineInfo li=_lineinfos[i];
+ scprintf(_SC("op [%d] line [%d] \n"),li._op,li._line);
+ n++;
+ }
+ scprintf(_SC("-----dump\n"));
+ n=0;
+ for(i=0;i<_instructions.size();i++){
+ SQInstruction &inst=_instructions[i];
+ if(inst.op==_OP_LOAD || inst.op==_OP_DLOAD || inst.op==_OP_PREPCALLK || inst.op==_OP_GETK ){
+
+ SQInteger lidx = inst._arg1;
+ scprintf(_SC("[%03d] %15s %d "),n,g_InstrDesc[inst.op].name,inst._arg0);
+ if(lidx >= 0xFFFFFFFF)
+ scprintf(_SC("null"));
+ else {
+ SQInteger refidx;
+ SQObjectPtr val,key,refo;
+ while(((refidx=_table(_literals)->Next(false,refo,key,val))!= -1) && (_integer(val) != lidx)) {
+ refo = refidx;
+ }
+ DumpLiteral(key);
+ }
+ if(inst.op != _OP_DLOAD) {
+ scprintf(_SC(" %d %d \n"),inst._arg2,inst._arg3);
+ }
+ else {
+ scprintf(_SC(" %d "),inst._arg2);
+ lidx = inst._arg3;
+ if(lidx >= 0xFFFFFFFF)
+ scprintf(_SC("null"));
+ else {
+ SQInteger refidx;
+ SQObjectPtr val,key,refo;
+ while(((refidx=_table(_literals)->Next(false,refo,key,val))!= -1) && (_integer(val) != lidx)) {
+ refo = refidx;
+ }
+ DumpLiteral(key);
+ scprintf(_SC("\n"));
+ }
+ }
+ }
+ else if(inst.op==_OP_LOADFLOAT) {
+ scprintf(_SC("[%03d] %15s %d %f %d %d\n"),n,g_InstrDesc[inst.op].name,inst._arg0,*((SQFloat*)&inst._arg1),inst._arg2,inst._arg3);
+ }
+ /* else if(inst.op==_OP_ARITH){
+ scprintf(_SC("[%03d] %15s %d %d %d %c\n"),n,g_InstrDesc[inst.op].name,inst._arg0,inst._arg1,inst._arg2,inst._arg3);
+ }*/
+ else {
+ scprintf(_SC("[%03d] %15s %d %d %d %d\n"),n,g_InstrDesc[inst.op].name,inst._arg0,inst._arg1,inst._arg2,inst._arg3);
+ }
+ n++;
+ }
+ scprintf(_SC("-----\n"));
+ scprintf(_SC("stack size[%d]\n"),func->_stacksize);
+ scprintf(_SC("--------------------------------------------------------------------\n\n"));
+}
+#endif
+
+SQInteger SQFuncState::GetNumericConstant(const SQInteger cons)
+{
+ return GetConstant(SQObjectPtr(cons));
+}
+
+SQInteger SQFuncState::GetNumericConstant(const SQFloat cons)
+{
+ return GetConstant(SQObjectPtr(cons));
+}
+
+SQInteger SQFuncState::GetConstant(const SQObject &cons)
+{
+ SQObjectPtr val;
+ if(!_table(_literals)->Get(cons,val))
+ {
+ val = _nliterals;
+ _table(_literals)->NewSlot(cons,val);
+ _nliterals++;
+ if(_nliterals > MAX_LITERALS) {
+ val.Null();
+ Error(_SC("internal compiler error: too many literals"));
+ }
+ }
+ return _integer(val);
+}
+
+void SQFuncState::SetIntructionParams(SQInteger pos,SQInteger arg0,SQInteger arg1,SQInteger arg2,SQInteger arg3)
+{
+ _instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&arg0);
+ _instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&arg1);
+ _instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&arg2);
+ _instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&arg3);
+}
+
+void SQFuncState::SetIntructionParam(SQInteger pos,SQInteger arg,SQInteger val)
+{
+ switch(arg){
+ case 0:_instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&val);break;
+ case 1:case 4:_instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&val);break;
+ case 2:_instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&val);break;
+ case 3:_instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&val);break;
+ };
+}
+
+SQInteger SQFuncState::AllocStackPos()
+{
+ SQInteger npos=_vlocals.size();
+ _vlocals.push_back(SQLocalVarInfo());
+ if(_vlocals.size()>((SQUnsignedInteger)_stacksize)) {
+ if(_stacksize>MAX_FUNC_STACKSIZE) Error(_SC("internal compiler error: too many locals"));
+ _stacksize=_vlocals.size();
+ }
+ return npos;
+}
+
+SQInteger SQFuncState::PushTarget(SQInteger n)
+{
+ if(n!=-1){
+ _targetstack.push_back(n);
+ return n;
+ }
+ n=AllocStackPos();
+ _targetstack.push_back(n);
+ return n;
+}
+
+SQInteger SQFuncState::GetUpTarget(SQInteger n){
+ return _targetstack[((_targetstack.size()-1)-n)];
+}
+
+SQInteger SQFuncState::TopTarget(){
+ return _targetstack.back();
+}
+SQInteger SQFuncState::PopTarget()
+{
+ SQInteger npos=_targetstack.back();
+ SQLocalVarInfo &t=_vlocals[_targetstack.back()];
+ if(type(t._name)==OT_NULL){
+ _vlocals.pop_back();
+ }
+ _targetstack.pop_back();
+ return npos;
+}
+
+SQInteger SQFuncState::GetStackSize()
+{
+ return _vlocals.size();
+}
+
+SQInteger SQFuncState::CountOuters(SQInteger stacksize)
+{
+ SQInteger outers = 0;
+ SQInteger k = _vlocals.size() - 1;
+ while(k >= stacksize) {
+ SQLocalVarInfo &lvi = _vlocals[k];
+ k--;
+ if(lvi._end_op == UINT_MINUS_ONE) { //this means is an outer
+ outers++;
+ }
+ }
+ return outers;
+}
+
+void SQFuncState::SetStackSize(SQInteger n)
+{
+ SQInteger size=_vlocals.size();
+ while(size>n){
+ size--;
+ SQLocalVarInfo lvi = _vlocals.back();
+ if(type(lvi._name)!=OT_NULL){
+ if(lvi._end_op == UINT_MINUS_ONE) { //this means is an outer
+ _outers--;
+ }
+ lvi._end_op = GetCurrentPos();
+ _localvarinfos.push_back(lvi);
+ }
+ _vlocals.pop_back();
+ }
+}
+
+bool SQFuncState::IsConstant(const SQObject &name,SQObject &e)
+{
+ SQObjectPtr val;
+ if(_table(_sharedstate->_consts)->Get(name,val)) {
+ e = val;
+ return true;
+ }
+ return false;
+}
+
+bool SQFuncState::IsLocal(SQUnsignedInteger stkpos)
+{
+ if(stkpos>=_vlocals.size())return false;
+ else if(type(_vlocals[stkpos]._name)!=OT_NULL)return true;
+ return false;
+}
+
+SQInteger SQFuncState::PushLocalVariable(const SQObject &name)
+{
+ SQInteger pos=_vlocals.size();
+ SQLocalVarInfo lvi;
+ lvi._name=name;
+ lvi._start_op=GetCurrentPos()+1;
+ lvi._pos=_vlocals.size();
+ _vlocals.push_back(lvi);
+ if(_vlocals.size()>((SQUnsignedInteger)_stacksize))_stacksize=_vlocals.size();
+ return pos;
+}
+
+
+
+SQInteger SQFuncState::GetLocalVariable(const SQObject &name)
+{
+ SQInteger locals=_vlocals.size();
+ while(locals>=1){
+ SQLocalVarInfo &lvi = _vlocals[locals-1];
+ if(type(lvi._name)==OT_STRING && _string(lvi._name)==_string(name)){
+ return locals-1;
+ }
+ locals--;
+ }
+ return -1;
+}
+
+void SQFuncState::MarkLocalAsOuter(SQInteger pos)
+{
+ SQLocalVarInfo &lvi = _vlocals[pos];
+ lvi._end_op = UINT_MINUS_ONE;
+ _outers++;
+}
+
+SQInteger SQFuncState::GetOuterVariable(const SQObject &name)
+{
+ SQInteger outers = _outervalues.size();
+ for(SQInteger i = 0; i<outers; i++) {
+ if(_string(_outervalues[i]._name) == _string(name))
+ return i;
+ }
+ SQInteger pos=-1;
+ if(_parent) {
+ pos = _parent->GetLocalVariable(name);
+ if(pos == -1) {
+ pos = _parent->GetOuterVariable(name);
+ if(pos != -1) {
+ _outervalues.push_back(SQOuterVar(name,SQObjectPtr(SQInteger(pos)),otOUTER)); //local
+ return _outervalues.size() - 1;
+ }
+ }
+ else {
+ _parent->MarkLocalAsOuter(pos);
+ _outervalues.push_back(SQOuterVar(name,SQObjectPtr(SQInteger(pos)),otLOCAL)); //local
+ return _outervalues.size() - 1;
+
+
+ }
+ }
+ return -1;
+}
+
+void SQFuncState::AddParameter(const SQObject &name)
+{
+ PushLocalVariable(name);
+ _parameters.push_back(name);
+}
+
+void SQFuncState::AddLineInfos(SQInteger line,bool lineop,bool force)
+{
+ if(_lastline!=line || force){
+ SQLineInfo li;
+ li._line=line;li._op=(GetCurrentPos()+1);
+ if(lineop)AddInstruction(_OP_LINE,0,line);
+ if(_lastline!=line) {
+ _lineinfos.push_back(li);
+ }
+ _lastline=line;
+ }
+}
+
+void SQFuncState::DiscardTarget()
+{
+ SQInteger discardedtarget = PopTarget();
+ SQInteger size = _instructions.size();
+ if(size > 0 && _optimization){
+ SQInstruction &pi = _instructions[size-1];//previous instruction
+ switch(pi.op) {
+ case _OP_SET:case _OP_NEWSLOT:case _OP_SETOUTER:case _OP_CALL:
+ if(pi._arg0 == discardedtarget) {
+ pi._arg0 = 0xFF;
+ }
+ }
+ }
+}
+
+void SQFuncState::AddInstruction(SQInstruction &i)
+{
+ SQInteger size = _instructions.size();
+ if(size > 0 && _optimization){ //simple optimizer
+ SQInstruction &pi = _instructions[size-1];//previous instruction
+ switch(i.op) {
+ case _OP_JZ:
+ if( pi.op == _OP_CMP && pi._arg1 < 0xFF) {
+ pi.op = _OP_JCMP;
+ pi._arg0 = (unsigned char)pi._arg1;
+ pi._arg1 = i._arg1;
+ return;
+ }
+ case _OP_SET:
+ case _OP_NEWSLOT:
+ if(i._arg0 == i._arg3) {
+ i._arg0 = 0xFF;
+ }
+ break;
+ case _OP_SETOUTER:
+ if(i._arg0 == i._arg2) {
+ i._arg0 = 0xFF;
+ }
+ break;
+ case _OP_RETURN:
+ if( _parent && i._arg0 != MAX_FUNC_STACKSIZE && pi.op == _OP_CALL && _returnexp < size-1) {
+ pi.op = _OP_TAILCALL;
+ } else if(pi.op == _OP_CLOSE){
+ pi = i;
+ return;
+ }
+ break;
+ case _OP_GET:
+ if( pi.op == _OP_LOAD && pi._arg0 == i._arg2 && (!IsLocal(pi._arg0))){
+ pi._arg1 = pi._arg1;
+ pi._arg2 = (unsigned char)i._arg1;
+ pi.op = _OP_GETK;
+ pi._arg0 = i._arg0;
+
+ return;
+ }
+ break;
+ case _OP_PREPCALL:
+ if( pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0))){
+ pi.op = _OP_PREPCALLK;
+ pi._arg0 = i._arg0;
+ pi._arg1 = pi._arg1;
+ pi._arg2 = i._arg2;
+ pi._arg3 = i._arg3;
+ return;
+ }
+ break;
+ case _OP_APPENDARRAY: {
+ SQInteger aat = -1;
+ switch(pi.op) {
+ case _OP_LOAD: aat = AAT_LITERAL; break;
+ case _OP_LOADINT: aat = AAT_INT; break;
+ case _OP_LOADBOOL: aat = AAT_BOOL; break;
+ case _OP_LOADFLOAT: aat = AAT_FLOAT; break;
+ default: break;
+ }
+ if(aat != -1 && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0))){
+ pi.op = _OP_APPENDARRAY;
+ pi._arg0 = i._arg0;
+ pi._arg1 = pi._arg1;
+ pi._arg2 = (unsigned char)aat;
+ pi._arg3 = MAX_FUNC_STACKSIZE;
+ return;
+ }
+ }
+ break;
+ case _OP_MOVE:
+ switch(pi.op) {
+ case _OP_GET: case _OP_ADD: case _OP_SUB: case _OP_MUL: case _OP_DIV: case _OP_MOD: case _OP_BITW:
+ case _OP_LOADINT: case _OP_LOADFLOAT: case _OP_LOADBOOL: case _OP_LOAD:
+
+ if(pi._arg0 == i._arg1)
+ {
+ pi._arg0 = i._arg0;
+ _optimization = false;
+ //_result_elimination = false;
+ return;
+ }
+ }
+
+ if(pi.op == _OP_MOVE)
+ {
+ pi.op = _OP_DMOVE;
+ pi._arg2 = i._arg0;
+ pi._arg3 = (unsigned char)i._arg1;
+ return;
+ }
+ break;
+ case _OP_LOAD:
+ if(pi.op == _OP_LOAD && i._arg1 < 256) {
+ pi.op = _OP_DLOAD;
+ pi._arg2 = i._arg0;
+ pi._arg3 = (unsigned char)i._arg1;
+ return;
+ }
+ break;
+ case _OP_EQ:case _OP_NE:
+ if(pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0) ))
+ {
+ pi.op = i.op;
+ pi._arg0 = i._arg0;
+ pi._arg1 = pi._arg1;
+ pi._arg2 = i._arg2;
+ pi._arg3 = MAX_FUNC_STACKSIZE;
+ return;
+ }
+ break;
+ case _OP_LOADNULLS:
+ if((pi.op == _OP_LOADNULLS && pi._arg0+pi._arg1 == i._arg0)) {
+
+ pi._arg1 = pi._arg1 + 1;
+ pi.op = _OP_LOADNULLS;
+ return;
+ }
+ break;
+ case _OP_LINE:
+ if(pi.op == _OP_LINE) {
+ _instructions.pop_back();
+ _lineinfos.pop_back();
+ }
+ break;
+ }
+ }
+ _optimization = true;
+ _instructions.push_back(i);
+}
+
+SQObject SQFuncState::CreateString(const SQChar *s,SQInteger len)
+{
+ SQObjectPtr ns(SQString::Create(_sharedstate,s,len));
+ _table(_strings)->NewSlot(ns,(SQInteger)1);
+ return ns;
+}
+
+SQObject SQFuncState::CreateTable()
+{
+ SQObjectPtr nt(SQTable::Create(_sharedstate,0));
+ _table(_strings)->NewSlot(nt,(SQInteger)1);
+ return nt;
+}
+
+SQFunctionProto *SQFuncState::BuildProto()
+{
+
+ SQFunctionProto *f=SQFunctionProto::Create(_ss,_instructions.size(),
+ _nliterals,_parameters.size(),_functions.size(),_outervalues.size(),
+ _lineinfos.size(),_localvarinfos.size(),_defaultparams.size());
+
+ SQObjectPtr refidx,key,val;
+ SQInteger idx;
+
+ f->_stacksize = _stacksize;
+ f->_sourcename = _sourcename;
+ f->_bgenerator = _bgenerator;
+ f->_name = _name;
+
+ while((idx=_table(_literals)->Next(false,refidx,key,val))!=-1) {
+ f->_literals[_integer(val)]=key;
+ refidx=idx;
+ }
+
+ for(SQUnsignedInteger nf = 0; nf < _functions.size(); nf++) f->_functions[nf] = _functions[nf];
+ for(SQUnsignedInteger np = 0; np < _parameters.size(); np++) f->_parameters[np] = _parameters[np];
+ for(SQUnsignedInteger no = 0; no < _outervalues.size(); no++) f->_outervalues[no] = _outervalues[no];
+ for(SQUnsignedInteger nl = 0; nl < _localvarinfos.size(); nl++) f->_localvarinfos[nl] = _localvarinfos[nl];
+ for(SQUnsignedInteger ni = 0; ni < _lineinfos.size(); ni++) f->_lineinfos[ni] = _lineinfos[ni];
+ for(SQUnsignedInteger nd = 0; nd < _defaultparams.size(); nd++) f->_defaultparams[nd] = _defaultparams[nd];
+
+ memcpy(f->_instructions,&_instructions[0],_instructions.size()*sizeof(SQInstruction));
+
+ f->_varparams = _varparams;
+
+ return f;
+}
+
+SQFuncState *SQFuncState::PushChildState(SQSharedState *ss)
+{
+ SQFuncState *child = (SQFuncState *)sq_malloc(sizeof(SQFuncState));
+ new (child) SQFuncState(ss,this,_errfunc,_errtarget);
+ _childstates.push_back(child);
+ return child;
+}
+
+void SQFuncState::PopChildState()
+{
+ SQFuncState *child = _childstates.back();
+ sq_delete(child,SQFuncState);
+ _childstates.pop_back();
+}
+
+SQFuncState::~SQFuncState()
+{
+ while(_childstates.size() > 0)
+ {
+ PopChildState();
+ }
+}
+
+#endif
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