--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Parser/Framework/Workers/SymParserWorkerConditionalExpression.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,69 @@
+/*
+* 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.Workers;
+using SymBuildParsingLib.Parser.Framework.Nodes;
+using SymbianTree;
+
+namespace SymBuildParsingLib.Parser.Framework.Workers
+{
+	// NB: Used only for 'if', 'ifdef', 'ifndef' expressions.
+	public class SymParserWorkerConditionalExpression : SymParserWorker
+	{
+		#region Constructors & destructor
+		public SymParserWorkerConditionalExpression( SymParserWorkerContext aContext )
+			: base( aContext )
+		{
+			SymNode node = new SymNodeConditionalExpression( aContext.CurrentToken );
+			aContext.Document.CurrentNode.Add( node );
+			
+			// Make this child node the new parent
+			aContext.Document.CurrentNode = node;
+		}
+		#endregion
+
+		#region From SymParserWorker
+		public override void RemoveChild( SymParserWorker aWorker )
+		{
+			base.RemoveChild( aWorker );
+			RemoveSelf();
+		}
+		#endregion
+
+		#region Utility functions
+		public static SymNodeConditionalExpression FindMostRecentConditionalExpression( SymNode aCurrentNode )
+		{
+			SymNodeConditionalExpression ret = null;
+			//
+			SymNodeEnumeratorUpTreeSiblingsFirst iterator = new SymNodeEnumeratorUpTreeSiblingsFirst( aCurrentNode );
+			//
+			foreach( SymNode node in iterator )
+			{
+				if	( node is SymNodeConditionalExpression )
+				{
+					ret = (SymNodeConditionalExpression) node;
+					break;
+				}
+			}
+			//
+			return ret;
+		}
+		#endregion
+	}
+}