crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Parser/PreProcessor/Workers/SymPreProcessorWorkerInclude.cs
changeset 0 818e61de6cd1
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Parser/PreProcessor/Workers/SymPreProcessorWorkerInclude.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,130 @@
+/*
+* 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 System.Text;
+using SymBuildParsingLib.Tree;
+using SymBuildParsingLib.Token;
+using SymBuildParsingLib.Common.Objects;
+using SymBuildParsingLib.Parser.Framework.Parser;
+using SymBuildParsingLib.Parser.Framework.Workers;
+using SymBuildParsingLib.Parser.Framework.Document;
+using SymBuildParsingLib.Parser.PreProcessor.Nodes;
+
+namespace SymBuildParsingLib.Parser.PreProcessor.Workers
+{
+	public sealed class SymPreProcessorWorkerInclude : SymParserWorkerConsumer
+	{
+		#region Constructors & destructor
+		public SymPreProcessorWorkerInclude( SymParserWorkerContext aContext )
+			: base( aContext, SymToken.TClass.EClassNewLine, SymParserWorkerConsumer.TDyingAction.EWhenDyingMakeAbsoluteParentNodeCurrent )
+		{
+			// Make a new child node for the include
+			iIncludeNode = new SymNodePreProcessorInclude();
+			aContext.Document.CurrentNode.Add( iIncludeNode );
+			aContext.Document.CurrentNode = iIncludeNode;
+		}
+		#endregion
+
+		#region From SymParserWorkerConsumer
+		protected override void HandleTerminatingConditionMatch( SymToken aToken )
+		{
+			// Update the include so that it contains a fully resolved path
+			iIncludeNode.IncludeDefinition.AdjustRelativeInclude( WorkerContext.Parser.FileName );
+
+			// We've now a fully resolved file name which we can parse, should
+			// we desire...
+			string includeFile = iIncludeNode.IncludeDefinition.Location;
+			if	( Utils.SymFileSystemUtils.FileExists( includeFile ) )
+			{
+				// Make a new document context
+				SymParserDocumentContext subDocumentContext = new SymParserDocumentContext( includeFile, WorkerContext );
+
+				// Use the existing document, but with a new context
+				WorkerContext.Document.PushContext( subDocumentContext );
+
+				// Make a new carbon copy of this parser (whatever concrete type it may be)
+				SymParserBase subParser = WorkerContext.Parser.CarbonCopy( new object[] { WorkerContext.Document } );
+
+				// Make the waiting object
+				SymParserWaiter waiter = new SymParserWaiter( subParser );
+
+				// Now parse the file and wait for the result
+				subParser.Parse();
+				waiter.Wait();
+
+				// Restore the original context
+				WorkerContext.Document.PopContext();
+			}
+		}
+		#endregion
+
+		#region From SymParserWorker
+		public override SymParserWorker.TTokenConsumptionType OfferToken( SymToken aToken )
+		{
+			TTokenConsumptionType ret = TTokenConsumptionType.ETokenNotConsumed;
+			System.Diagnostics.Debug.Assert( WorkerContext.Document.CurrentNode is SymNodePreProcessorInclude );
+			
+			// Only consume tokens whilst we're unsure of the include type (system vs user).
+			if	( iIncludeNode.IncludeDefinition.Type == SymIncludeDefinition.TType.ETypeUndefined )
+			{
+				if	( aToken.Class == SymToken.TClass.EClassQuotation )
+				{
+					// Must be a user include if its a quotation that we're handling
+					iIncludeNode.IncludeDefinition.Type = SymIncludeDefinition.TType.ETypeUser;
+					ret = TTokenConsumptionType.ETokenConsumed;
+				}
+				else if ( aToken.Class == SymToken.TClass.EClassSymbol && aToken.Value == "<" )
+				{
+					// Consume it, but don't absorb it
+					iIncludeNode.IncludeDefinition.Type = SymIncludeDefinition.TType.ETypeSystem;
+					ret = TTokenConsumptionType.ETokenConsumed;
+				}
+			}
+			else if ( iIncludeNode.IncludeDefinition.Type != SymIncludeDefinition.TType.ETypeUndefined )
+			{
+				// Only consume the tokens whilst we've not yet identified the include
+				// definition location.
+				if	( iIncludeNode.IncludeDefinition.Location.Length == 0 )
+				{
+					if	( iIncludeNode.IncludeDefinition.Type == SymIncludeDefinition.TType.ETypeSystem && aToken.Class == SymToken.TClass.EClassSymbol && aToken.Value == ">" )
+					{
+						iIncludeNode.IncludeDefinition.Location = iWorkingIncludePath.ToString();
+					}
+					else if ( iIncludeNode.IncludeDefinition.Type == SymIncludeDefinition.TType.ETypeUser && aToken.Class == SymToken.TClass.EClassQuotation && aToken.Type != SymToken.TType.ETypeUnidentified )
+					{
+						iIncludeNode.IncludeDefinition.Location = iWorkingIncludePath.ToString();
+					}
+					else
+					{
+						iWorkingIncludePath.Append( aToken.Value );
+					}
+				}
+			}
+
+			// Base class will dequeue us once we reach the new line
+			ret = base.OfferToken( aToken );
+			return ret;
+		}
+		#endregion
+
+		#region Data members
+		private StringBuilder iWorkingIncludePath = new StringBuilder();
+		private readonly SymNodePreProcessorInclude iIncludeNode;
+		#endregion
+	}
+}