public object LookupVariable(Expr expr)
{
if (locals.ContainsKey(expr))
{
return(environment.GetAt(locals[expr], ((Variable)expr).name));
}
else
{
return(globals.Get(((Variable)expr).name));
}
}
public object Get(Token name)
{
if (!values.ContainsKey(name.lexeme))
{
if (enclosing == null)
{
return(null); //all undefined variables are null
}
else
{
return(enclosing.Get(name));
}
}
return(values[name.lexeme].Item2);
}
public object Property(Interpreter interpreter, Token token, object argument)
{
return(env.Get(new Token(EOF, (string)argument, null, token.line)));
}
