#if !NETCF
#region Apache License
//
// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to you 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
using System;
using System.Text;
using System.Diagnostics;
using System.Reflection;
using log4net.Util;

namespace log4net.Core
{
	/// <summary>
	/// provides stack frame information without actually referencing a System.Diagnostics.StackFrame
	/// as that would require that the containing assembly is loaded.
	/// </summary>
	///
	[Serializable]
	public class StackFrameItem
	{
		#region Public Instance Constructors

		/// <summary>
		/// returns a stack frame item from a stack frame. This
		/// </summary>
		/// <param name="frame"></param>
		/// <returns></returns>
		public StackFrameItem(StackFrame frame)
		{
			// set default values
			m_lineNumber = NA;
			m_fileName = NA;
			m_method = new MethodItem();
			m_className = NA;

			try
			{
				// get frame values
				m_lineNumber = frame.GetFileLineNumber().ToString(System.Globalization.NumberFormatInfo.InvariantInfo);
				m_fileName = frame.GetFileName();
				// get method values
				MethodBase method = frame.GetMethod();
				if (method != null)
				{
					if(method.DeclaringType != null)
						m_className = method.DeclaringType.FullName;
					m_method = new MethodItem(method);
				}
			}
			catch (Exception ex)
			{
				LogLog.Error(declaringType, "An exception ocurred while retreiving stack frame information.", ex);
			}

			// set full info
			m_fullInfo = m_className + '.' + m_method.Name + '(' + m_fileName + ':' + m_lineNumber + ')';
		}

		#endregion

		#region Public Instance Properties

		/// <summary>
		/// Gets the fully qualified class name of the caller making the logging
		/// request.
		/// </summary>
		/// <value>
		/// The fully qualified class name of the caller making the logging
		/// request.
		/// </value>
		/// <remarks>
		/// <para>
		/// Gets the fully qualified class name of the caller making the logging
		/// request.
		/// </para>
		/// </remarks>
		public string ClassName
		{
			get { return m_className; }
		}

		/// <summary>
		/// Gets the file name of the caller.
		/// </summary>
		/// <value>
		/// The file name of the caller.
		/// </value>
		/// <remarks>
		/// <para>
		/// Gets the file name of the caller.
		/// </para>
		/// </remarks>
		public string FileName
		{
			get { return m_fileName; }
		}

		/// <summary>
		/// Gets the line number of the caller.
		/// </summary>
		/// <value>
		/// The line number of the caller.
		/// </value>
		/// <remarks>
		/// <para>
		/// Gets the line number of the caller.
		/// </para>
		/// </remarks>
		public string LineNumber
		{
			get { return m_lineNumber; }
		}

		/// <summary>
		/// Gets the method name of the caller.
		/// </summary>
		/// <value>
		/// The method name of the caller.
		/// </value>
		/// <remarks>
		/// <para>
		/// Gets the method name of the caller.
		/// </para>
		/// </remarks>
		public MethodItem Method
		{
			get { return m_method; }
		}

		/// <summary>
		/// Gets all available caller information
		/// </summary>
		/// <value>
		/// All available caller information, in the format
		/// <c>fully.qualified.classname.of.caller.methodName(Filename:line)</c>
		/// </value>
		/// <remarks>
		/// <para>
		/// Gets all available caller information, in the format
		/// <c>fully.qualified.classname.of.caller.methodName(Filename:line)</c>
		/// </para>
		/// </remarks>
		public string FullInfo
		{
			get { return m_fullInfo; }
		}

		#endregion Public Instance Properties

		#region Private Instance Fields

		private readonly string m_lineNumber;
		private readonly string m_fileName;
		private readonly string m_className;
		private readonly string m_fullInfo;
		private readonly MethodItem m_method;

		#endregion

		#region Private Static Fields

		/// <summary>
		/// The fully qualified type of the StackFrameItem class.
		/// </summary>
		/// <remarks>
		/// Used by the internal logger to record the Type of the
		/// log message.
		/// </remarks>
		private readonly static Type declaringType = typeof(StackFrameItem);

		/// <summary>
		/// When location information is not available the constant
		/// <c>NA</c> is returned. Current value of this string
		/// constant is <b>?</b>.
		/// </summary>
		private const string NA = "?";

		#endregion Private Static Fields
	}
}
#endif