1 /*

     2 * Copyright (c) 2004-2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 using System;

    19 using SymBuildParsingLib.Tree;

    20 using SymBuildParsingLib.Parser.Framework.Workers;

    21 using SymBuildParsingLib.Parser.Framework.Nodes;

    22 using SymbianTree;

    23 

    24 namespace SymBuildParsingLib.Parser.Framework.Workers

    25 {

    26 	// NB: Used only for 'if', 'ifdef', 'ifndef' expressions.

    27 	public class SymParserWorkerConditionalExpression : SymParserWorker

    28 	{

    29 		#region Constructors & destructor

    30 		public SymParserWorkerConditionalExpression( SymParserWorkerContext aContext )

    31 			: base( aContext )

    32 		{

    33 			SymNode node = new SymNodeConditionalExpression( aContext.CurrentToken );

    34 			aContext.Document.CurrentNode.Add( node );

    35 			

    36 			// Make this child node the new parent

    37 			aContext.Document.CurrentNode = node;

    38 		}

    39 		#endregion

    40 

    41 		#region From SymParserWorker

    42 		public override void RemoveChild( SymParserWorker aWorker )

    43 		{

    44 			base.RemoveChild( aWorker );

    45 			RemoveSelf();

    46 		}

    47 		#endregion

    48 

    49 		#region Utility functions

    50 		public static SymNodeConditionalExpression FindMostRecentConditionalExpression( SymNode aCurrentNode )

    51 		{

    52 			SymNodeConditionalExpression ret = null;

    53 			//

    54 			SymNodeEnumeratorUpTreeSiblingsFirst iterator = new SymNodeEnumeratorUpTreeSiblingsFirst( aCurrentNode );

    55 			//

    56 			foreach( SymNode node in iterator )

    57 			{

    58 				if	( node is SymNodeConditionalExpression )

    59 				{

    60 					ret = (SymNodeConditionalExpression) node;

    61 					break;

    62 				}

    63 			}

    64 			//

    65 			return ret;

    66 		}

    67 		#endregion

    68 	}

    69 }