public object VisitCallExpr(Call expr)
{
Object callee = Evaluate(expr.Callee);
List <Object> arguments = new List <Object>();
foreach (Expr argument in expr.Arguments)
{
arguments.Add(Evaluate(argument));
}
if (!(callee is ICallable))
{
// TODO: Change error message to not mention classes explicitly
// since this shows up before classes are implemented.
throw new RuntimeError(expr.Paren, "Can only call functions and classes.");
}
ICallable function = (ICallable)callee;
if (arguments.Count < function.RequiredArguments())
{
throw new RuntimeError(expr.Paren, "Not enough arguments.");
}
return(function.Call(this, arguments));
}
