2 see copyright notice in squirrel.h
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4 #include "sqpcheader.h"
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5 #include "sqcompiler.h"
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6 #include "sqfuncproto.h"
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7 #include "sqstring.h"
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9 #include "sqopcodes.h"
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10 #include "sqfuncstate.h"
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13 SQInstructionDesc g_InstrDesc[]={
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16 {_SC("_OP_LOADINT")},
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18 {_SC("_OP_TAILCALL")},
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20 {_SC("_OP_PREPCALL")},
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21 {_SC("_OP_PREPCALLK")},
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24 {_SC("_OP_NEWSLOT")},
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25 {_SC("_OP_DELETE")},
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32 {_SC("_OP_RETURN")},
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33 {_SC("_OP_LOADNULLS")},
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34 {_SC("_OP_LOADROOTTABLE")},
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35 {_SC("_OP_LOADBOOL")},
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40 {_SC("_OP_LOADFREEVAR")},
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42 {_SC("_OP_GETVARGV")},
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43 {_SC("_OP_NEWTABLE")},
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44 {_SC("_OP_NEWARRAY")},
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45 {_SC("_OP_APPENDARRAY")},
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46 {_SC("_OP_GETPARENT")},
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47 {_SC("_OP_COMPARITH")},
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48 {_SC("_OP_COMPARITHL")},
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54 {_SC("_OP_EXISTS")},
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55 {_SC("_OP_INSTANCEOF")},
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61 {_SC("_OP_CLOSURE")},
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63 {_SC("_OP_RESUME")},
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64 {_SC("_OP_FOREACH")},
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65 {_SC("_OP_DELEGATE")},
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67 {_SC("_OP_TYPEOF")},
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68 {_SC("_OP_PUSHTRAP")},
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69 {_SC("_OP_POPTRAP")},
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72 {_SC("_OP_NEWSLOTA")}
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75 void DumpLiteral(SQObjectPtr &o)
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78 case OT_STRING: scprintf(_SC("\"%s\""),_stringval(o));break;
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79 case OT_FLOAT: scprintf(_SC("{%f}"),_float(o));break;
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80 case OT_INTEGER: scprintf(_SC("{%d}"),_integer(o));break;
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81 default: assert(0); break; //shut up compiler
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85 SQFuncState::SQFuncState(SQSharedState *ss,SQFuncState *parent,CompilerErrorFunc efunc,void *ed)
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88 _literals = SQTable::Create(ss,0);
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89 _strings = SQTable::Create(ss,0);
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92 _optimization = true;
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100 _bgenerator = false;
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104 void SQFuncState::Error(const SQChar *err)
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106 _errfunc(_errtarget,err);
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110 void SQFuncState::Dump(SQFunctionProto *func)
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112 SQUnsignedInteger n=0,i;
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113 scprintf(_SC("SQInstruction sizeof %d\n"),sizeof(SQInstruction));
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114 scprintf(_SC("SQObject sizeof %d\n"),sizeof(SQObject));
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115 scprintf(_SC("--------------------------------------------------------------------\n"));
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116 scprintf(_SC("*****FUNCTION [%s]\n"),type(func->_name)==OT_STRING?_stringval(func->_name):_SC("unknown"));
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117 scprintf(_SC("-----LITERALS\n"));
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118 SQObjectPtr refidx,key,val;
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120 SQObjectPtrVec templiterals;
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121 templiterals.resize(_nliterals);
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122 while((idx=_table(_literals)->Next(false,refidx,key,val))!=-1) {
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124 templiterals[_integer(val)]=key;
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126 for(i=0;i<templiterals.size();i++){
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127 scprintf(_SC("[%d] "),n);
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128 DumpLiteral(templiterals[i]);
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129 scprintf(_SC("\n"));
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132 scprintf(_SC("-----PARAMS\n"));
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134 scprintf(_SC("<<VARPARAMS>>\n"));
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136 for(i=0;i<_parameters.size();i++){
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137 scprintf(_SC("[%d] "),n);
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138 DumpLiteral(_parameters[i]);
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139 scprintf(_SC("\n"));
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142 scprintf(_SC("-----LOCALS\n"));
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143 for(i=0;i<func->_localvarinfos.size();i++){
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144 SQLocalVarInfo lvi=func->_localvarinfos[i];
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145 scprintf(_SC("[%d] %s \t%d %d\n"),lvi._pos,_stringval(lvi._name),lvi._start_op,lvi._end_op);
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148 scprintf(_SC("-----LINE INFO\n"));
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149 for(i=0;i<_lineinfos.size();i++){
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150 SQLineInfo li=_lineinfos[i];
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151 scprintf(_SC("op [%d] line [%d] \n"),li._op,li._line);
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154 scprintf(_SC("-----dump\n"));
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156 for(i=0;i<_instructions.size();i++){
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157 SQInstruction &inst=_instructions[i];
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158 if(inst.op==_OP_LOAD || inst.op==_OP_DLOAD || inst.op==_OP_PREPCALLK || inst.op==_OP_GETK ){
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160 SQInteger lidx = inst._arg1;
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161 scprintf(_SC("[%03d] %15s %d "),n,g_InstrDesc[inst.op].name,inst._arg0);
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162 if(lidx >= 0xFFFFFFFF)
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163 scprintf(_SC("null"));
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166 SQObjectPtr val,key,refo;
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167 while(((refidx=_table(_literals)->Next(false,refo,key,val))!= -1) && (_integer(val) != lidx)) {
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172 if(inst.op != _OP_DLOAD) {
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173 scprintf(_SC(" %d %d \n"),inst._arg2,inst._arg3);
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176 scprintf(_SC(" %d "),inst._arg2);
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178 if(lidx >= 0xFFFFFFFF)
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179 scprintf(_SC("null"));
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182 SQObjectPtr val,key,refo;
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183 while(((refidx=_table(_literals)->Next(false,refo,key,val))!= -1) && (_integer(val) != lidx)) {
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187 scprintf(_SC("\n"));
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191 else if(inst.op==_OP_ARITH){
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192 scprintf(_SC("[%03d] %15s %d %d %d %c\n"),n,g_InstrDesc[inst.op].name,inst._arg0,inst._arg1,inst._arg2,inst._arg3);
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195 scprintf(_SC("[%03d] %15s %d %d %d %d\n"),n,g_InstrDesc[inst.op].name,inst._arg0,inst._arg1,inst._arg2,inst._arg3);
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198 scprintf(_SC("-----\n"));
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199 scprintf(_SC("stack size[%d]\n"),func->_stacksize);
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200 scprintf(_SC("--------------------------------------------------------------------\n\n"));
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204 SQInteger SQFuncState::GetNumericConstant(const SQInteger cons)
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206 return GetConstant(SQObjectPtr(cons));
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209 SQInteger SQFuncState::GetNumericConstant(const SQFloat cons)
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211 return GetConstant(SQObjectPtr(cons));
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214 SQInteger SQFuncState::GetConstant(const SQObject &cons)
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217 if(!_table(_literals)->Get(cons,val))
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220 _table(_literals)->NewSlot(cons,val);
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222 if(_nliterals > MAX_LITERALS) {
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224 Error(_SC("internal compiler error: too many literals"));
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227 return _integer(val);
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230 void SQFuncState::SetIntructionParams(SQInteger pos,SQInteger arg0,SQInteger arg1,SQInteger arg2,SQInteger arg3)
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232 _instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&arg0);
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233 _instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&arg1);
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234 _instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&arg2);
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235 _instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&arg3);
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238 void SQFuncState::SetIntructionParam(SQInteger pos,SQInteger arg,SQInteger val)
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241 case 0:_instructions[pos]._arg0=(unsigned char)*((SQUnsignedInteger *)&val);break;
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242 case 1:case 4:_instructions[pos]._arg1=(SQInt32)*((SQUnsignedInteger *)&val);break;
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243 case 2:_instructions[pos]._arg2=(unsigned char)*((SQUnsignedInteger *)&val);break;
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244 case 3:_instructions[pos]._arg3=(unsigned char)*((SQUnsignedInteger *)&val);break;
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248 SQInteger SQFuncState::AllocStackPos()
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250 SQInteger npos=_vlocals.size();
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251 _vlocals.push_back(SQLocalVarInfo());
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252 if(_vlocals.size()>((SQUnsignedInteger)_stacksize)) {
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253 if(_stacksize>MAX_FUNC_STACKSIZE) Error(_SC("internal compiler error: too many locals"));
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254 _stacksize=_vlocals.size();
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259 SQInteger SQFuncState::PushTarget(SQInteger n)
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262 _targetstack.push_back(n);
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266 _targetstack.push_back(n);
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270 SQInteger SQFuncState::GetUpTarget(SQInteger n){
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271 return _targetstack[((_targetstack.size()-1)-n)];
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274 SQInteger SQFuncState::TopTarget(){
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275 return _targetstack.back();
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277 SQInteger SQFuncState::PopTarget()
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279 SQInteger npos=_targetstack.back();
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280 SQLocalVarInfo t=_vlocals[_targetstack.back()];
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281 if(type(t._name)==OT_NULL){
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282 _vlocals.pop_back();
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284 _targetstack.pop_back();
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288 SQInteger SQFuncState::GetStackSize()
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290 return _vlocals.size();
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293 void SQFuncState::SetStackSize(SQInteger n)
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295 SQInteger size=_vlocals.size();
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298 SQLocalVarInfo lvi=_vlocals.back();
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299 if(type(lvi._name)!=OT_NULL){
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300 lvi._end_op=GetCurrentPos();
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301 _localvarinfos.push_back(lvi);
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303 _vlocals.pop_back();
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307 bool SQFuncState::IsLocal(SQUnsignedInteger stkpos)
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309 if(stkpos>=_vlocals.size())return false;
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310 else if(type(_vlocals[stkpos]._name)!=OT_NULL)return true;
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314 SQInteger SQFuncState::PushLocalVariable(const SQObject &name)
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316 SQInteger pos=_vlocals.size();
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317 SQLocalVarInfo lvi;
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319 lvi._start_op=GetCurrentPos()+1;
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320 lvi._pos=_vlocals.size();
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321 _vlocals.push_back(lvi);
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322 if(_vlocals.size()>((SQUnsignedInteger)_stacksize))_stacksize=_vlocals.size();
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327 SQInteger SQFuncState::GetLocalVariable(const SQObject &name)
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329 SQInteger locals=_vlocals.size();
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331 if(type(_vlocals[locals-1]._name)==OT_STRING && _string(_vlocals[locals-1]._name)==_string(name)){
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339 SQInteger SQFuncState::GetOuterVariable(const SQObject &name)
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341 SQInteger outers = _outervalues.size();
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342 for(SQInteger i = 0; i<outers; i++) {
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343 if(_string(_outervalues[i]._name) == _string(name))
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349 void SQFuncState::AddOuterValue(const SQObject &name)
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353 pos = _parent->GetLocalVariable(name);
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355 pos = _parent->GetOuterVariable(name);
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357 _outervalues.push_back(SQOuterVar(name,SQObjectPtr(SQInteger(pos)),otOUTER)); //local
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362 _outervalues.push_back(SQOuterVar(name,SQObjectPtr(SQInteger(pos)),otLOCAL)); //local
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366 _outervalues.push_back(SQOuterVar(name,name,otSYMBOL)); //global
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369 void SQFuncState::AddParameter(const SQObject &name)
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371 PushLocalVariable(name);
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372 _parameters.push_back(name);
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375 void SQFuncState::AddLineInfos(SQInteger line,bool lineop,bool force)
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377 if(_lastline!=line || force){
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379 li._line=line;li._op=(GetCurrentPos()+1);
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380 if(lineop)AddInstruction(_OP_LINE,0,line);
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381 _lineinfos.push_back(li);
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386 void SQFuncState::AddInstruction(SQInstruction &i)
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388 SQInteger size = _instructions.size();
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389 if(size > 0 && _optimization){ //simple optimizer
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390 SQInstruction &pi = _instructions[size-1];//previous instruction
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393 if( _parent && i._arg0 != MAX_FUNC_STACKSIZE && pi.op == _OP_CALL && _returnexp < size-1) {
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394 pi.op = _OP_TAILCALL;
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398 if( pi.op == _OP_LOAD && pi._arg0 == i._arg2 && (!IsLocal(pi._arg0))){
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399 pi._arg1 = pi._arg1;
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400 pi._arg2 = (unsigned char)i._arg1;
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402 pi._arg0 = i._arg0;
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408 if( pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0))){
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409 pi.op = _OP_PREPCALLK;
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410 pi._arg0 = i._arg0;
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411 pi._arg1 = pi._arg1;
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412 pi._arg2 = i._arg2;
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413 pi._arg3 = i._arg3;
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417 case _OP_APPENDARRAY:
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418 if(pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0))){
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419 pi.op = _OP_APPENDARRAY;
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420 pi._arg0 = i._arg0;
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421 pi._arg1 = pi._arg1;
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422 pi._arg2 = MAX_FUNC_STACKSIZE;
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423 pi._arg3 = MAX_FUNC_STACKSIZE;
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428 if((pi.op == _OP_GET || pi.op == _OP_ARITH || pi.op == _OP_BITW) && (pi._arg0 == i._arg1))
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430 pi._arg0 = i._arg0;
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431 _optimization = false;
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435 if(pi.op == _OP_MOVE)
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438 pi._arg2 = i._arg0;
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439 pi._arg3 = (unsigned char)i._arg1;
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444 if(pi.op == _OP_LOAD && i._arg1 < 256) {
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446 pi._arg2 = i._arg0;
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447 pi._arg3 = (unsigned char)i._arg1;
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451 case _OP_EQ:case _OP_NE:
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452 if(pi.op == _OP_LOAD && pi._arg0 == i._arg1 && (!IsLocal(pi._arg0) ))
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455 pi._arg0 = i._arg0;
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456 pi._arg1 = pi._arg1;
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457 pi._arg2 = i._arg2;
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458 pi._arg3 = MAX_FUNC_STACKSIZE;
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462 case _OP_LOADNULLS:
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463 if((pi.op == _OP_LOADNULLS && pi._arg0+pi._arg1 == i._arg0)) {
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465 pi._arg1 = pi._arg1 + 1;
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466 pi.op = _OP_LOADNULLS;
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471 if(pi.op == _OP_LINE) {
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472 _instructions.pop_back();
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473 _lineinfos.pop_back();
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478 _optimization = true;
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479 _instructions.push_back(i);
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482 SQObject SQFuncState::CreateString(const SQChar *s,SQInteger len)
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484 SQObjectPtr ns(SQString::Create(_sharedstate,s,len));
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485 _table(_strings)->NewSlot(ns,(SQInteger)1);
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489 SQFunctionProto *SQFuncState::BuildProto()
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491 SQFunctionProto *f=SQFunctionProto::Create();
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492 f->_literals.resize(_nliterals);
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493 SQObjectPtr refidx,key,val;
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496 f->_stacksize = _stacksize;
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497 f->_sourcename = _sourcename;
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498 f->_bgenerator = _bgenerator;
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501 while((idx=_table(_literals)->Next(false,refidx,key,val))!=-1) {
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502 f->_literals[_integer(val)]=key;
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506 f->_functions.resize(_functions.size());
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507 f->_functions.copy(_functions);
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508 f->_parameters.resize(_parameters.size());
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509 f->_parameters.copy(_parameters);
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510 f->_outervalues.resize(_outervalues.size());
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511 f->_outervalues.copy(_outervalues);
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512 f->_instructions.resize(_instructions.size());
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513 f->_instructions.copy(_instructions);
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514 f->_localvarinfos.resize(_localvarinfos.size());
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515 f->_localvarinfos.copy(_localvarinfos);
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516 f->_lineinfos.resize(_lineinfos.size());
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517 f->_lineinfos.copy(_lineinfos);
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518 f->_varparams = _varparams;
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523 SQFuncState *SQFuncState::PushChildState(SQSharedState *ss)
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525 SQFuncState *child = (SQFuncState *)sq_malloc(sizeof(SQFuncState));
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526 new (child) SQFuncState(ss,this,_errfunc,_errtarget);
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527 _childstates.push_back(child);
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531 void SQFuncState::PopChildState()
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533 SQFuncState *child = _childstates.back();
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534 sq_delete(child,SQFuncState);
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535 _childstates.pop_back();
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538 SQFuncState::~SQFuncState()
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540 while(_childstates.size() > 0)
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