public CanCauseError <IExpression <T> > GetSymbolValue(string symbol)
{
IExpression <T> result;
if (definedSymbols.TryGetValue(symbol, out result))
{
return(CanCauseError <IExpression <T> > .NoError(result));
}
if (ParentScope != null)
{
return(ParentScope.GetSymbolValue(symbol));
}
return(CanCauseError <IExpression <T> > .Error("Symbol {0} not defined", symbol));
}
public CanCauseError <IExpression <T> > GetSymbolValue(string symbol)
{
IExpression <T> value;
if (definedSymbols.TryGetValue(symbol, out value))
{
return(CanCauseError <IExpression <T> > .NoError(value));
}
else if (ParentScope != null)
{
return(ParentScope.GetSymbolValue(symbol));
}
else
{
return(CanCauseError <IExpression <T> > .Error("Symbol {0} not defined", symbol));
}
}
