using System;
using System.Configuration;
using System.Threading;
using System.Xml;
namespace SPSolutions.Configuration
{
	public class ConfigUtil
	{
		public static void CheckAssignableType(Type baseType, Type type, ConfigurationElement configElement, string propertyName)
		{
			if (!baseType.IsAssignableFrom(type))
			{
				throw new ConfigurationErrorsException("Type_doesnt_inherit_from_type", configElement.ElementInformation.Properties[propertyName].Source, configElement.ElementInformation.Properties[propertyName].LineNumber);
			}
		}
		public static void CheckAssignableType(Type baseType, Type baseType2, Type type, ConfigurationElement configElement, string propertyName)
		{
			if (!baseType.IsAssignableFrom(type) && !baseType2.IsAssignableFrom(type))
			{
				throw new ConfigurationErrorsException("Type_doesnt_inherit_from_type", configElement.ElementInformation.Properties[propertyName].Source, configElement.ElementInformation.Properties[propertyName].LineNumber);
			}
		}
		public static void CheckBaseType(Type expectedBaseType, Type userBaseType, string propertyName, ConfigurationElement configElement)
		{
			if (!expectedBaseType.IsAssignableFrom(userBaseType))
			{
				throw new ConfigurationErrorsException("Invalid_type_to_inherit_from", configElement.ElementInformation.Properties[propertyName].Source, configElement.ElementInformation.Properties[propertyName].LineNumber);
			}
		}
		internal static Type GetType(string typeName, XmlNode node)
		{
			return ConfigUtil.GetType(typeName, node, false);
		}
		internal static Type GetType(string typeName, string propertyName, ConfigurationElement configElement)
		{
			return ConfigUtil.GetType(typeName, propertyName, configElement, true);
		}
		internal static Type GetType(string typeName, XmlNode node, bool ignoreCase)
		{
			return ConfigUtil.GetType(typeName, null, null, node, true, ignoreCase);
		}
		internal static Type GetType(string typeName, string propertyName, ConfigurationElement configElement, bool checkAptcaBit)
		{
			return ConfigUtil.GetType(typeName, propertyName, configElement, checkAptcaBit, false);
		}
		internal static Type GetType(string typeName, string propertyName, ConfigurationElement configElement, bool checkAptcaBit, bool ignoreCase)
		{
			return ConfigUtil.GetType(typeName, propertyName, configElement, null, checkAptcaBit, ignoreCase);
		}
		internal static Type GetType(string typeName, string propertyName, ConfigurationElement configElement, XmlNode node, bool checkAptcaBit, bool ignoreCase)
		{
			Type type;
			try
			{
				type = Type.GetType(typeName, true, ignoreCase);
			}
			catch (Exception ex)
			{
				if (ex is ThreadAbortException || ex is StackOverflowException || ex is OutOfMemoryException)
				{
					throw;
				}
				if (node != null)
				{
					throw new ConfigurationErrorsException(ex.Message, ex, node);
				}
				throw new ConfigurationErrorsException(ex.Message, ex, configElement.ElementInformation.Properties[propertyName].Source, configElement.ElementInformation.Properties[propertyName].LineNumber);
			}
			return type;
		}
	}
}