// Copyright (c) 2007 Omer Rauchwerger (a.k.a rauchy) (omer@rauchy.net)
// All rights reserved.
//
// This file is part of Regionerate.
// 
// This program is free software; you can redistribute it and/or modify it 
// under the terms of the GNU General Public License as published by 
// the Free Software Foundation; either version 3 of the License, 
// or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Diagnostics;
using System.Reflection;
using System.Xml;

namespace BestBrains.System
{
    public static class CommentReader
    {
        #region Fields (2) 

        private static StackFrame callingMethodFrame;
        private static readonly XmlDocument generatedDocumentation = new XmlDocument();

        #endregion Fields 

        #region Methods (1) 

        // Public Methods (1) 

        public static string GetElement( string elementName )
        {
            StackTrace stackTrace = new StackTrace();
            callingMethodFrame = stackTrace.GetFrame( 1 );

            generatedDocumentation.Load( String.Format( "{0}.xml",
                                                        Assembly.GetCallingAssembly().FullName.Split( ',' )[ 0 ] ) );

            XmlNode node =
                generatedDocumentation.SelectSingleNode(
                    String.Format( "doc/members/member[contains(@name, '{0}.{1}')]/{2}",
                                   callingMethodFrame.GetMethod().DeclaringType, callingMethodFrame.GetMethod().Name,
                                   elementName ) );

            if ( node != null )
            {
                return node.InnerXml;
            }
            else
            {
                throw new ArgumentException( String.Format( "Element '{0}' not found.", elementName ) );
            }
        }

        #endregion Methods 
    }
}