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Root/src/GameServiceContainer.cs

#region License
/* FNA - XNA4 Reimplementation for Desktop Platforms
 * Copyright 2009-2016 Ethan Lee and the MonoGame Team
 *
 * Released under the Microsoft Public License.
 * See LICENSE for details.
 */
 
/* Derived from code by the Mono.Xna Team (Copyright 2006).
 * Released under the MIT License. See monoxna.LICENSE for details.
 */
#endregion
 
#region Using Statements
using System;
using System.Collections.Generic;
#endregion
 
namespace Microsoft.Xna.Framework
{
    public class GameServiceContainer : IServiceProvider
    {
        #region Private Fields
 
        Dictionary<Type, object> services;
 
        #endregion
 
        #region Public Constructors
 
        public GameServiceContainer()
        {
            services = new Dictionary<Type, object>();
        }
 
        #endregion
 
        #region Public Methods
 
        public void AddService(Type type, object provider)
        {
            if (type == null)
            {
                throw new ArgumentNullException("type");
            }
            if (provider == null)
            {
                throw new ArgumentNullException("provider");
            }
            if (!type.IsAssignableFrom(provider.GetType()))
            {
                throw new ArgumentException(
                    "The provider does not match the specified service type!"
                );
            }
 
            services.Add(type, provider);
        }
 
        public object GetService(Type type)
        {
            if (type == null)
            {
                throw new ArgumentNullException("type");
            }
 
            object service;
            if (services.TryGetValue(type, out service))
            {
                return service;
            }
 
            return null;
        }
 
        public void RemoveService(Type type)
        {
            if (type == null)
            {
                throw new ArgumentNullException("type");
            }
 
            services.Remove(type);
        }
 
        #endregion
    }
}

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