public EcmaComplication RunCode(TextReader reader)
{
EcmaComplication result = new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined());
EcmaTokenizer token = new EcmaTokenizer(reader);
while (token.Current().IsNot(TokenType.EOS))
{
result = EcmaEvulator.Evulate(this.State, this.State.GetProgroam(token));
}
return(result);
}
internal static EcmaComplication Evulate(EcmaState state, EcmaStatment statment)
{
EcmaComplication c = new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined());
switch (statment.Type)
{
case EcmaStatmentType.FunctionDec:
return(CreateFuncDec(state, statment));
case EcmaStatmentType.Expresion:
return(new EcmaComplication(EcmaComplicationType.Normal, EvulateExpresion(state, statment.Expresion)));
case EcmaStatmentType.Return:
return(new EcmaComplication(EcmaComplicationType.Return, statment.Expresion == null ? EcmaValue.Undefined() : EvulateExpresion(state, statment.Expresion)));
case EcmaStatmentType.If:
if (Reference.GetValue(EvulateExpresion(state, statment.Expresion)).ToBoolean(state))
{
return(Evulate(state, statment.Statment));
}
else
{
if (statment.Else == null)
{
return(new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined()));
}
return(Evulate(state, statment.Else));
}
case EcmaStatmentType.Block:
for (int i = 0; i < statment.Statments.Count; i++)
{
c = Evulate(state, statment.Statments[i]);
if (c.Type != EcmaComplicationType.Normal)
{
return(c);
}
}
return(new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Null()));
case EcmaStatmentType.Var:
EcmaHeadObject putIn = state.GetScope()[state.GetScope().Length - 1];
foreach (string key in statment.VarList.Keys)
{
putIn.Put(key, statment.VarList[key] == null ? EcmaValue.Undefined() : Reference.GetValue(EvulateExpresion(state, statment.VarList[key])));
}
return(new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined()));
case EcmaStatmentType.While:
c = new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined());
while (EvulateExpresion(state, statment.Expresion).ToBoolean(state))
{
c = Evulate(state, statment.Statment);
if (c.Type == EcmaComplicationType.Break)
{
return(new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined()));
}
else if (c.Type == EcmaComplicationType.Continue)
{
c = new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined());
}
else if (c.Type == EcmaComplicationType.Return)
{
return(c);
}
}
return(c);
case EcmaStatmentType.For:
if (statment.Expresion != null)
{
Reference.GetValue(EvulateExpresion(state, statment.Expresion));
}
while (statment.Second == null || Reference.GetValue(EvulateExpresion(state, statment.Second)).ToBoolean(state))
{
c = Evulate(state, statment.Statment);
if (c.Type == EcmaComplicationType.Break)
{
return(new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined()));
}
else if (c.Type == EcmaComplicationType.Return)
{
return(c);
}
else if (c.Type == EcmaComplicationType.Continue)
{
c = new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined());
}
if (statment.Tree != null)
{
Reference.GetValue(EvulateExpresion(state, statment.Tree));
}
}
return(c);
case EcmaStatmentType.ForIn:
EcmaHeadObject obj = Reference.GetValue(EvulateExpresion(state, statment.Second)).ToObject(state);
c = new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined());
foreach (string key in obj.Property.Keys)
{
if (obj.Property[key].DontEnum)
{
continue;
}
if (statment.Expresion.Type == ExpresionType.VarList)
{
Reference.PutValue(EvulateExpresion(state, statment.Expresion.Multi[0].Left), EcmaValue.String(key), state.GlobalObject);
}
else
{
Reference.PutValue(EvulateExpresion(state, statment.Expresion), EcmaValue.String(key), state.GlobalObject);
}
c = Evulate(state, statment.Statment);
if (c.Type != EcmaComplicationType.Normal)
{
if (c.Type == EcmaComplicationType.Break)
{
return(new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined()));
}
if (c.Type == EcmaComplicationType.Continue)
{
c = new EcmaComplication(EcmaComplicationType.Normal, EcmaValue.Undefined());
}
if (c.Type == EcmaComplicationType.Return)
{
return(c);
}
}
}
return(c);
case EcmaStatmentType.Continue:
return(new EcmaComplication(EcmaComplicationType.Continue, EcmaValue.Undefined()));
default:
throw new EcmaRuntimeException("Evulator out of sync. Unknown statment type: " + statment.Type.ToString());
}
}