public object VisitCallExpr(Expr.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 IElizCallable))
{
throw new RuntimeError(expr.paren,
"Can only call functions and classes.");
}
IElizCallable function = callee as IElizCallable;
if (arguments.Count != function.Arity())
{
throw new RuntimeError(expr.paren, $"Expected {function.Arity()} arguments but got {arguments.Count}.");
}
return(function.Call(this, arguments));
}
public Void VisitCallExpr(Expr.Call expr)
{
Resolve(expr.callee);
foreach (Expr argument in expr.arguments)
{
Resolve(argument);
}
return(null);
}