#region Apache Notice
/*****************************************************************************
 * $Header: $
 * $Revision: $
 * $Date: $
 * 
 * iBATIS.NET Data Mapper
 * Copyright (C) 2004 - Gilles Bayon
 *  
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 ********************************************************************************/
#endregion

#region Imports
using System;
#endregion

namespace IBatisNet.Common.Utilities
{
	/// <summary>
	/// Summary description for HashCodeProvider.
	/// </summary>
	public class HashCodeProvider
	{
		/// <summary>
		/// Supplies a hash code for an object.
		/// </summary>
		/// <param name="obj">The object.</param>
		/// <returns>A hash code</returns>
		/// <remarks>
		/// Buggy in .NET V1.0
		/// .NET Fx v1.1 Update: 
		/// As of v1.1 of the framework, there is a method System.Runtime.CompilerServices.RuntimeHelpers.GetHashCode(object) that does this as well.
		/// I will not use to Keep compatiblity with .NET V1.0
		/// </remarks>
		public static int GetIdentityHashCode(object obj)
		{
			System.Reflection.MethodInfo methodInfo = null;
			Type type = typeof(object);

			methodInfo = type.GetMethod("GetHashCode");
			return (int) methodInfo.Invoke(obj, null);
		}
	}
}