using System;
using System.Collections.Generic;

namespace Gaia.FullSerializer
{
	public sealed class fsContext
	{
		private readonly Dictionary<Type, object> _contextObjects = new Dictionary<Type, object>();

		public void Reset()
		{
			_contextObjects.Clear();
		}

		public void Set<T>(T obj)
		{
			_contextObjects[typeof(T)] = obj;
		}

		public bool Has<T>()
		{
			return _contextObjects.ContainsKey(typeof(T));
		}

		public T Get<T>()
		{
			if (_contextObjects.TryGetValue(typeof(T), out var value))
			{
				return (T)value;
			}
			throw new InvalidOperationException("There is no context object of type " + typeof(T));
		}
	}
}