--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Parser/PreProcessor/Workers/SymPreProcessorWorkerElses.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,114 @@
+/*
+* Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+using System;
+using SymBuildParsingLib.Tree;
+using SymBuildParsingLib.Parser.Framework;
+using SymBuildParsingLib.Parser.Framework.Nodes;
+using SymBuildParsingLib.Parser.Framework.Workers;
+using SymBuildParsingLib.Parser.PreProcessor.Nodes;
+
+namespace SymBuildParsingLib.Parser.PreProcessor.Workers
+{
+	public class SymPreProcessorWorkerElse : SymParserWorker
+	{
+		#region Constructors & destructor
+		public SymPreProcessorWorkerElse( SymParserWorkerContext aContext )
+			: base( aContext )
+		{
+			// When the else token is reached, we must work back up the tree
+			// looking for the previous (i.e. most recent) conditional expression
+			// node.
+			SymNodeConditionalExpression condExpNode = SymParserWorkerConditionalExpression.FindMostRecentConditionalExpression( aContext.Document.CurrentNode );
+			if	( condExpNode == null )
+			{
+				throw new Exception( "Unable to locate most recent condition expression during ELSE handling" );
+			}
+
+			// There must always be a positive condition node and some kind of condition
+			if	( condExpNode.ChildTypeExists( typeof(SymNodeCondition) ) == false )
+			{
+				throw new Exception( "No child condition node found during ELSE handling" );
+			}
+
+			// Make the conditional expression the current node
+			aContext.Document.CurrentNode = condExpNode;
+
+			// Make a new condition worker. The condition worker creates a new condition node
+			// which becomes the new current node.
+			SymParserWorkerContext context = new SymParserWorkerContext( aContext.Document.Context, this );
+			SymParserWorkerCondition conditionWorker = new SymParserWorkerCondition( context, new SymNodePreProcessorCondition( aContext.CurrentToken.Value ) );
+			AddChild( conditionWorker );
+
+			// If we didn't find any appropriately handled condition object, then
+			// we make this the catch-all condition (with no expression to evaluate)
+			if	( condExpNode.HasPositiveBranch == false )
+			{
+			}
+		}
+		#endregion
+
+		#region From SymParserWorker
+		public override void RemoveChild( SymParserWorker aWorker )
+		{
+			base.RemoveChild( aWorker );
+			RemoveSelf();
+		}
+		#endregion
+	}
+
+	public class SymPreProcessorWorkerElseIf : SymParserWorker
+	{
+		#region Constructors & destructor
+		public SymPreProcessorWorkerElseIf( SymParserWorkerContext aContext )
+			: base( aContext )
+		{
+			// When the else token is reached, we must work back up the tree
+			// looking for the previous (i.e. most recent) conditional expression
+			// node.
+			SymNodeConditionalExpression condExpNode = SymParserWorkerConditionalExpression.FindMostRecentConditionalExpression( aContext.Document.CurrentNode );
+			if	( condExpNode == null )
+			{
+				throw new Exception( "Unable to locate most recent condition expression during ELSE IF handling" );
+			}
+
+			// There must always be a positive condition node and some kind of condition
+			if	( condExpNode.ChildTypeExists( typeof(SymNodeCondition) ) == false )
+			{
+				throw new Exception( "No child condition node found during ELSE IF handling" );
+			}
+
+			// Make the conditional expression the current node
+			aContext.Document.CurrentNode = condExpNode;
+
+			// Make a new condition worker. The condition worker creates a new condition node
+			// which becomes the new current node.
+			SymParserWorkerContext context = new SymParserWorkerContext( aContext.Document.Context, this );
+			SymParserWorkerCondition conditionWorker = new SymParserWorkerCondition( context, new SymNodePreProcessorCondition( aContext.CurrentToken.Value ) );
+			AddChild( conditionWorker );
+		}
+		#endregion
+
+		#region From SymParserWorker
+		public override void RemoveChild( SymParserWorker aWorker )
+		{
+			base.RemoveChild( aWorker );
+			RemoveSelf();
+		}
+		#endregion
+	}
+}