--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Utils/SymExpressionEvaluator.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,78 @@
+/*
+* 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 Microsoft.JScript;
+using Microsoft.JScript.Vsa;
+using Microsoft.Vsa;
+
+
+namespace SymBuildParsingLib.Utils
+{
+	public class SymExpressionEvaluator
+	{
+		#region API
+		public static object Evaluate( string aExpression )
+		{
+			object ret = null;
+			//
+			try
+			{
+				ret = Microsoft.JScript.Eval.JScriptEvaluate( aExpression, iScriptEngine );
+			}
+			catch (Exception)
+			{
+				ret = false;
+			}
+			//
+			return ret;
+		}
+
+		public static bool EvaluateAsBoolean( string aExpression )
+		{
+			bool ret = false;
+			//
+			object result = Evaluate( aExpression );
+			//
+			if	( result != null )
+			{
+				if	( result is bool )
+				{
+					ret = (bool) result;
+				}
+				else
+				{
+					// Anything non-NULL that is not a bool will be treated
+					// as 'true'
+					ret = true;
+				}
+			}
+			else
+			{
+				// Null evaluation so we'll treat that as 'false'
+				ret = false;
+			}
+			//
+			return ret;
+		}
+		#endregion
+
+		#region Data members
+		private static VsaEngine iScriptEngine = VsaEngine.CreateEngine();
+		#endregion
+	}
+}