--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymbolLib/Generic/Comparer/GenericSymbolComparer.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,82 @@
+/*
+* 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.IO;
+using System.Collections.Generic;
+
+namespace SymbolLib.Generics
+{
+	internal class GenericSymbolComparer : IComparer<GenericSymbol>
+	{
+        #region IComparer<GenericSymbol> Members
+        int IComparer<GenericSymbol>.Compare( GenericSymbol aLeft, GenericSymbol aRight )
+        {
+            int ret = -1;
+            //
+            if ( aLeft == null || aRight == null )
+            {
+                if ( aRight == null )
+                {
+                    ret = 1;
+                }
+            }
+            else
+            {
+                int ret2 = aLeft.AddressRange.CompareTo( aRight.AddressRange );
+                GenericSymbol left = aLeft;
+                System.Diagnostics.Debug.Assert( left.EndAddress >= left.Address );
+                GenericSymbol right = aRight;
+                System.Diagnostics.Debug.Assert( right.EndAddress >= right.Address );
+                //
+                if ( left.Address == right.Address && left.EndAddress == right.EndAddress )
+                {
+                    ret = 0;
+                }
+                else if ( left.EndAddress == right.Address )
+                {
+                    System.Diagnostics.Debug.Assert( left.Address < right.Address );
+                    System.Diagnostics.Debug.Assert( right.EndAddress >= left.EndAddress );
+                    //
+                    ret = -1;
+                }
+                else if ( left.Address == right.EndAddress )
+                {
+                    System.Diagnostics.Debug.Assert( right.Address < left.Address );
+                    System.Diagnostics.Debug.Assert( left.EndAddress >= right.EndAddress );
+                    //
+                    ret = 1;
+                }
+                else if ( left.Address > right.EndAddress )
+                {
+                    System.Diagnostics.Debug.Assert( left.EndAddress > right.EndAddress );
+                    System.Diagnostics.Debug.Assert( left.EndAddress > right.Address );
+                    ret = 1;
+                }
+                else if ( left.EndAddress < right.Address )
+                {
+                    System.Diagnostics.Debug.Assert( left.Address < right.EndAddress );
+                    System.Diagnostics.Debug.Assert( right.EndAddress > left.EndAddress );
+                    ret = -1;
+                }
+                System.Diagnostics.Debug.Assert( ret2 == ret );
+            }
+            //
+            return ret;
+          }
+        #endregion
+    }
+}