| /* |
| * [The "BSD licence"] |
| * Copyright (c) 2005-2008 Terence Parr |
| * All rights reserved. |
| * |
| * Conversion to C#: |
| * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| namespace Antlr.Runtime.Debug { |
| using Antlr.Runtime.JavaExtensions; |
| |
| using Console = System.Console; |
| using IOException = System.IO.IOException; |
| |
| public class DebugParser : Parser { |
| /** <summary>Who to notify when events in the parser occur.</summary> */ |
| public IDebugEventListener dbg = null; |
| |
| /** <summary> |
| * Used to differentiate between fixed lookahead and cyclic DFA decisions |
| * while profiling. |
| * </summary> |
| */ |
| public bool isCyclicDecision = false; |
| |
| /** <summary> |
| * Create a normal parser except wrap the token stream in a debug |
| * proxy that fires consume events. |
| * </summary> |
| */ |
| public DebugParser(ITokenStream input, IDebugEventListener dbg, RecognizerSharedState state) |
| : base(input is DebugTokenStream ? input : new DebugTokenStream(input, dbg), state) { |
| SetDebugListener(dbg); |
| } |
| |
| public DebugParser(ITokenStream input, RecognizerSharedState state) |
| : base(input is DebugTokenStream ? input : new DebugTokenStream(input, null), state) { |
| } |
| |
| public DebugParser(ITokenStream input, IDebugEventListener dbg) |
| : this(input is DebugTokenStream ? input : new DebugTokenStream(input, dbg), dbg, null) { |
| } |
| |
| public override IDebugEventListener DebugListener { |
| get { |
| return dbg; |
| } |
| } |
| |
| /** <summary> |
| * Provide a new debug event listener for this parser. Notify the |
| * input stream too that it should send events to this listener. |
| * </summary> |
| */ |
| public virtual void SetDebugListener(IDebugEventListener value) { |
| DebugTokenStream debugTokenStream = input as DebugTokenStream; |
| if (debugTokenStream != null) |
| debugTokenStream.DebugListener = value; |
| |
| dbg = value; |
| } |
| |
| public virtual void ReportError(IOException e) { |
| Console.Error.WriteLine(e); |
| ExceptionExtensions.PrintStackTrace(e, Console.Error); |
| } |
| |
| public override void BeginResync() { |
| dbg.BeginResync(); |
| base.BeginResync(); |
| } |
| |
| public override void EndResync() { |
| dbg.EndResync(); |
| base.EndResync(); |
| } |
| |
| public virtual void BeginBacktrack(int level) { |
| dbg.BeginBacktrack(level); |
| } |
| |
| public virtual void EndBacktrack(int level, bool successful) { |
| dbg.EndBacktrack(level, successful); |
| } |
| |
| public override void ReportError(RecognitionException e) { |
| base.ReportError(e); |
| dbg.RecognitionException(e); |
| } |
| } |
| } |