--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Parser/PreProcessor/Nodes/SymNodePreProcessorCondition.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,162 @@
+/*
+* 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.Token;
+using SymBuildParsingLib.Utils;
+using SymBuildParsingLib.Parser.Framework.Document;
+using SymBuildParsingLib.Parser.Framework.Nodes;
+using SymbianTree;
+
+namespace SymBuildParsingLib.Parser.PreProcessor.Nodes
+{
+	public class SymNodePreProcessorCondition : SymNodeCondition
+	{
+		#region Constructors & destructor
+		public SymNodePreProcessorCondition( SymNodeCondition.TType aType )
+		: base( aType )
+		{
+		}
+
+		public SymNodePreProcessorCondition( string aName )
+		: base( aName )
+		{
+		}
+		#endregion
+
+		#region From SymNodeCondition
+		public override void Evaluate( SymParserDocumentContext aContext )
+		{
+			IsEvaluated = false;
+
+			if	( Type == TType.ETypeIf || Type == TType.ETypeElseIf )
+			{
+				// Evaluate the expression, taking into account the current #define'd 
+				// values. Prepares a new document with these expressions evaluated.
+				SymTokenDocument evalDoc = new SymTokenDocument();
+				EvaluateDefineNodes( BalancedArguments, evalDoc, aContext );
+				string expression = evalDoc.ChildrenAsString( false, true );
+				EvaluationResult = SymExpressionEvaluator.EvaluateAsBoolean( expression );
+			}
+			else if ( Type == TType.ETypeIfdef || Type == TType.ETypeIfndef )
+			{
+				// Convert the tree to a flat expression
+				string symbol = BalancedArguments.ChildrenAsString( true, true );
+
+				// Check if the symbol is defined
+				if ( Type == TType.ETypeIfdef )
+				{
+					EvaluationResult = aContext.DefineDirectory.IsDefined( symbol );
+				}
+				else if ( Type == TType.ETypeIfndef )
+				{
+					EvaluationResult = !aContext.DefineDirectory.IsDefined( symbol );
+				}
+			}
+			else if ( Type == TType.ETypeElse )
+			{
+				// Else statements always evaluate to true. We let the parent
+				// conditional expression node decide whether or not this item should
+				// 'fire'
+				EvaluationResult = true;
+			}
+
+			IsEvaluated = true;
+		}
+		#endregion
+
+		#region Properties
+		#endregion
+
+		#region Internal methods
+		private void EvaluateDefineNodes( SymNode aNode, SymTokenDocument aDocument, SymParserDocumentContext aContext )
+		{
+			foreach( SymNode n in aNode )
+			{
+				if	( n is SymTokenBalancerMarkerLevelNode )
+				{
+					bool added = false;
+					//
+					SymTokenBalancerMarkerLevelNode levelNode = (SymTokenBalancerMarkerLevelNode) n;
+					if	( levelNode.IsFunction )
+					{
+						SymNodeToken functionNameNode = levelNode.FunctionName;
+						//
+						if	( functionNameNode.Token.Equals( iDefinedNodeToken ) )
+						{
+							SymTokenContainer defineName = levelNode.ChildTokens;
+							string flattened = defineName.CoalescedTokenValue;
+							
+							// Get definition result
+							bool isDefined = aContext.DefineDirectory.IsDefined( flattened );
+							SymToken isDefinedToken = new SymToken( isDefined.ToString().ToLower(), SymToken.TClass.EClassAlphaNumeric, SymToken.TType.ETypeAlphaNumericNormal );
+
+							// Remove already added "defined" text node from output document
+							if	( aDocument.CurrentNode.LastChild is SymNodeToken )
+							{
+								SymNodeToken last = (SymNodeToken) aDocument.CurrentNode.LastChild;
+								if	( last.Token.Equals( iDefinedNodeToken ) )
+								{
+									last.Remove();
+								}
+							}
+
+							// Add result
+							aDocument.CurrentNode.Add( new SymNodeToken( isDefinedToken ) );
+							added = true;
+						}
+					}
+
+					if	( added == false )
+					{
+						if	( levelNode.HasPrevious && levelNode.Previous is SymTokenBalancerNodeEmittedElement )
+						{
+							levelNode.EmittedElementPrevious.AddToDocumentIfEmittable( aDocument );
+						}
+
+						SymNode newLevelNode = new SymNodeAddAsChild();
+						aDocument.CurrentNode.Add( newLevelNode );
+						aDocument.CurrentNode = newLevelNode;
+						EvaluateDefineNodes( n, aDocument, aContext );
+						aDocument.MakeParentCurrent();
+
+						if	( levelNode.HasNext && levelNode.Next is SymTokenBalancerNodeEmittedElement )
+						{
+							levelNode.EmittedElementNext.AddToDocumentIfEmittable( aDocument );
+						}
+					}
+				}
+				else if ( n is SymNodeToken )
+				{
+					SymNodeToken node = (SymNodeToken) n;
+					SymNodeToken copy = new SymNodeToken( node.Token );
+					aDocument.CurrentNode.Add( copy );
+				}
+				else if	( n is SymTokenBalancerNodeEmittedElement )
+				{
+					// Handled when the level marker is reached
+				}
+			}
+		}
+		#endregion
+
+		#region Data members
+		private static SymToken iDefinedNodeToken = new SymToken( "defined", SymToken.TClass.EClassAlphaNumeric, SymToken.TType.ETypeAlphaNumericNormal );
+		#endregion
+	}
+}