using System.Diagnostics.CodeAnalysis;

namespace InnovEnergy.Lib.Utils;

public static class NullableUtilsStruct
{
    public static IEnumerable<T> ToEnumerable<T>(this T? t) where T : struct
    {
        if (t.HasValue)
            yield return t.Value;
    }

    public static T ThrowIfNull<T>(this T? t) where T : struct => ThrowIfNull(t, null);

    public static T ThrowIfNull<T>(this T? t, String? message) where T : struct
    {
        if (!t.HasValue)
            throw new NullReferenceException(message);

        return t.Value;
    }
    
    public static Boolean IsNull<T>([NotNullWhen(returnValue: false)] this T? t) where T : struct => t.HasValue;
}