using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using CPF.ReoGrid.Common;

namespace CPF.ReoGrid.Utility
{
	internal static class XMLHelper
	{
		public static T LoadXML<T>(Stream s) where T : class
		{
			Type typeFromHandle = typeof(T);
			Stopwatch stopwatch = Stopwatch.StartNew();
			T result;
			try
			{
				XmlSerializer xmlSerializer = null;
				bool flag = XMLHelper.xmlSerializers == null;
				if (flag)
				{
					XMLHelper.xmlSerializers = new Dictionary<Type, XmlSerializer>();
				}
				bool flag2 = !XMLHelper.xmlSerializers.TryGetValue(typeFromHandle, out xmlSerializer);
				if (flag2)
				{
					xmlSerializer = (XMLHelper.xmlSerializers[typeFromHandle] = new XmlSerializer(typeFromHandle));
				}
				result = (xmlSerializer.Deserialize(s) as T);
			}
			finally
			{
				stopwatch.Stop();
				Logger.Log("xml utility", "type loaded: {0}, {1} ms.", new object[]
				{
					typeFromHandle.Name,
					stopwatch.ElapsedMilliseconds
				});
			}
			return result;
		}

		public static void SaveXML<T>(Stream s, T obj)
		{
			Type typeFromHandle = typeof(T);
			Stopwatch stopwatch = Stopwatch.StartNew();
			try
			{
				XmlSerializer xmlSerializer = null;
				bool flag = XMLHelper.xmlSerializers == null;
				if (flag)
				{
					XMLHelper.xmlSerializers = new Dictionary<Type, XmlSerializer>();
				}
				bool flag2 = !XMLHelper.xmlSerializers.TryGetValue(typeFromHandle, out xmlSerializer);
				if (flag2)
				{
					xmlSerializer = (XMLHelper.xmlSerializers[typeFromHandle] = new XmlSerializer(typeFromHandle));
				}
				XmlSerializerNamespaces namespaces = null;
				FieldInfo field = obj.GetType().GetField("xmlns", BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
				bool flag3 = field != null;
				if (flag3)
				{
					namespaces = (field.GetValue(obj) as XmlSerializerNamespaces);
				}
				XmlWriterSettings settings = new XmlWriterSettings
				{
					Encoding = Encoding.UTF8
				};
				using (XmlWriter xmlWriter = XmlWriter.Create(s, settings))
				{
					xmlSerializer.Serialize(xmlWriter, obj, namespaces);
				}
			}
			finally
			{
				stopwatch.Stop();
				Logger.Log("xml utility", "type saved: {0}, {1} ms.", new object[]
				{
					typeFromHandle.Name,
					stopwatch.ElapsedMilliseconds
				});
			}
		}

		private static Dictionary<Type, XmlSerializer> xmlSerializers;
	}
}