public int PushLocal(string name, EvalObject val)
{
var id = idCounter++;
locals.Add(new Local(id, name, val));
return(id);
}
public EvalObject Call(EvalObject arg, Environment env)
{
var i = env.PushLocal(param, arg);
var res = Evaluator.Instance.Eval(body);
env.PopLocal(i);
return(res);
}
public EvalObject Assign(string name, EvalObject val)
{
for (int i = locals.Count - 1; i >= 0; --i)
{
var l = locals[i];
if (l.name == name)
{
return(l.val = val);
}
}
return(values[name] = val);
}
public Local(int id, string name, EvalObject val)
{
this.id = id;
this.name = name;
this.val = val;
}
public EvalObject Call(EvalObject arg)
{
return(val(arg));
}
