--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbianUtils/BasicTypes/SymMask.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,123 @@
+/*
+* Copyright (c) 2009 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 System.Collections.Generic;
+using System.Text;
+
+namespace SymbianUtils.BasicTypes
+{
+    public class SymMask
+    {
+        #region Enumerations
+        public enum TShiftDirection
+        {
+            ELeft = 0,
+            ERight
+        }
+        #endregion
+
+        #region Constructors
+        public SymMask( string aBinary )
+        {
+            iMaskingBits = SymBitUtils.CreateMask( aBinary, out iExpectedValueAfterMasking );
+        }
+
+        public SymMask( string aBinary, TShiftDirection aDirection, uint aCount )
+            : this( aBinary )
+        {
+            if ( aDirection == TShiftDirection.ELeft )
+            {
+                iShift = -Convert.ToInt32( aCount );
+            }
+            else
+            {
+                iShift = Convert.ToInt32( aCount );
+            }
+        }
+
+        public SymMask( uint aMask )
+            : this( aMask, aMask, TShiftDirection.ELeft, 0 )
+        {
+        }
+
+        public SymMask( uint aMask, TShiftDirection aDirection, int aCount )
+            : this( aMask, aMask, aDirection, aCount )
+        {
+        }
+
+        public SymMask( uint aMask, uint aValue, TShiftDirection aDirection, int aCount )
+        {
+            iMaskingBits = aMask;
+            iExpectedValueAfterMasking = aValue;
+            if ( aDirection == TShiftDirection.ELeft )
+            {
+                iShift = -Convert.ToInt32( aCount );
+            }
+            else
+            {
+                iShift = Convert.ToInt32( aCount );
+            }
+        }
+        #endregion
+
+        #region API
+        public bool IsMatch( uint aValue )
+        {
+            //      101 0 000000000000000000000000
+            //      111 0 000000000000000000000000
+            // 1110 010 1 100111110000000000111100
+            bool ret = ( aValue & iMaskingBits ) == iExpectedValueAfterMasking;
+            return ret;
+        }
+
+        public uint Apply( uint aValue )
+        {
+            uint ret = ( iMaskingBits & aValue );
+            if ( iShift != 0 )
+            {
+                if ( iShift < 0 )
+                {
+                    ret <<= iShift;
+                }
+                else
+                {
+                    ret >>= iShift;
+                }
+            }
+            return ret;
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+        #region Operators
+        #endregion
+
+        #region From System.Object
+        #endregion
+
+        #region Internal methods
+        #endregion
+
+        #region Data members
+        private int iShift = 0;
+        private uint iMaskingBits = 0;
+        private uint iExpectedValueAfterMasking = 0;
+        #endregion
+    }
+}