using System;

namespace Gaia.FullSerializer.Internal
{
	public struct fsOption<T>
	{
		private bool _hasValue;

		private T _value;

		public static fsOption<T> Empty;

		public bool HasValue => _hasValue;

		public bool IsEmpty => !_hasValue;

		public T Value
		{
			get
			{
				if (IsEmpty)
				{
					throw new InvalidOperationException("fsOption is empty");
				}
				return _value;
			}
		}

		public fsOption(T value)
		{
			_hasValue = true;
			_value = value;
		}
	}
	public static class fsOption
	{
		public static fsOption<T> Just<T>(T value)
		{
			return new fsOption<T>(value);
		}
	}
}