/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="arg"></param>
/// <param name="context"></param>
/// <returns></returns>
public static T To <T>(this IArgument arg, Engine context)
{
var o = arg.Evaluate(context) ?? throw new ArgumentTypeException("Evaluated to null", arg);
if (o is T t)
{
return(t);
}
throw new ArgumentTypeException($"Cannot convert to {typeof(T)} ({o.GetType()}): {o}", arg);
}
/// <summary>
///
/// </summary>
/// <param name="arg"></param>
/// <param name="context"></param>
/// <returns></returns>
public static int ToInt(this IArgument arg, Engine context)
{
var o = arg.Evaluate(context) ?? throw new ArgumentTypeException("Evaluated to null", arg);
switch (o)
{
case int i:
return(i);
case double d:
return((int)d);
default:
var s = o.ToString();
if (!int.TryParse(s, out var v))
{
throw new ArgumentTypeException($"Cannot convert to int ({o.GetType().FullName}): {s}", arg);
}
return(v);
}
}
/// <summary>
///
/// </summary>
/// <param name="arg"></param>
/// <param name="context"></param>
/// <returns></returns>
public static bool ToBool(this IArgument arg, Engine context)
{
var o = arg.Evaluate(context) ?? throw new ArgumentTypeException("Evaluated to null", arg);
switch (o)
{
case bool b:
return(b);
case double d:
return(d != 0.0);
case int i:
return(i != 0);
default:
var s = o.ToString();
if (!bool.TryParse(s, out var v))
{
throw new ArgumentTypeException($"Cannot convert to bool ({o.GetType().FullName}): {s}", arg);
}
return(v);
}
}
