diff -r 000000000000 -r 818e61de6cd1 crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Lexer/SymLexerWorkerLine.cs --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/crashanalysercmd/PerfToolsSharedLibraries/Engine/SymBuildParsingLib/Lexer/SymLexerWorkerLine.cs Thu Feb 11 15:50:58 2010 +0200 @@ -0,0 +1,125 @@ +/* +* 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 System.Collections; +using SymBuildParsingLib.Lexer; +using SymBuildParsingLib.Utils; + +namespace SymBuildParsingLib.Lexer +{ + public class SymLexerWorkerLine : SymLexerWorker, ISymLexerPositionProvider + { + #region Constructors & destructor + public SymLexerWorkerLine( SymLexer aLexer ) + : base( aLexer ) + { + } + #endregion + + #region Properties + public char LastCharacter + { + get { return iLastCharacter; } + set { iLastCharacter = value; } + } + #endregion + + #region SymLexerWorker Members + public override bool ProcessCharacter( char aCharacter ) + { + bool consumed = false; + + // At the end of a line if we see 0x0A or then 0x0D and the next character is not 0x0A + if ( aCharacter == KSymLineFeed || aCharacter == KSymCarriageReturn ) + { + if ( aCharacter == KSymLineFeed ) + { + // This is definitely the end of a line. If the last + // character was a carriage return, then we mark + // the start of the end-of-line as the previous + // character. Otherwise, its this one. + AddNewEndOfLinePosition(); + } + else + { + // Its a CR (0x0D) but it might be followed by a LF + // so don't do anything yet. + LastCharacter = aCharacter; + } + + consumed = true; + } + else if ( LastCharacter == KSymCarriageReturn ) + { + // The current character is not a line feed, but the last + // char was a carriage return => implicitly, the last + // character was an end of line. + AddNewEndOfLinePosition(); + } + else + { + iCurrentPosition.Inc(); + LastCharacter = aCharacter; + } + + return consumed; + } + + public override void StartedNewLine( SymTextPosition aEOLPosition ) + { + } + #endregion + + #region ISymLexerPositionProvider Members + public SymTextPosition CurrentPosition + { + get + { + return new SymTextPosition( iCurrentPosition ); + } + } + + public void SetObserver( ISymLexerPositionObserver aObserver ) + { + } + #endregion + + #region Internal methods + private void AddNewEndOfLinePosition() + { + iLineEndingPositions.Add( iCurrentPosition ); + Lexer.HandleEndOfLineDetected( iCurrentPosition ); + + iCurrentPosition.NewLine(); + iLastCharacter = '\0'; + } + #endregion + + #region Internal constants + const int KSymLineFeed = 0xA; + const int KSymCarriageReturn = 0xD; + #endregion + + #region Data members + private char iLastCharacter = '\0'; + private ArrayList iLineEndingPositions = new ArrayList( 1024 ); + private SymTextPosition iCurrentPosition = new SymTextPosition(); + #endregion + } +}