| /* |
| * [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 Obsolete = System.ObsoleteAttribute; |
| using ITreeAdaptor = Antlr.Runtime.Tree.ITreeAdaptor; |
| using ITreeNodeStream = Antlr.Runtime.Tree.ITreeNodeStream; |
| |
| /** <summary> |
| * Debug any tree node stream. The constructor accepts the stream |
| * and a debug listener. As node stream calls come in, debug events |
| * are triggered. |
| * </summary> |
| */ |
| public class DebugTreeNodeStream : ITreeNodeStream { |
| protected IDebugEventListener dbg; |
| protected ITreeAdaptor adaptor; |
| protected ITreeNodeStream input; |
| protected bool initialStreamState = true; |
| |
| /** <summary>Track the last mark() call result value for use in rewind().</summary> */ |
| protected int lastMarker; |
| |
| public DebugTreeNodeStream(ITreeNodeStream input, |
| IDebugEventListener dbg) { |
| this.input = input; |
| this.adaptor = input.TreeAdaptor; |
| this.input.UniqueNavigationNodes = true; |
| DebugListener = dbg; |
| } |
| |
| #region Properties |
| public virtual IDebugEventListener DebugListener { |
| get { |
| return dbg; |
| } |
| set { |
| dbg = value; |
| } |
| } |
| public virtual int Index { |
| get { |
| return input.Index; |
| } |
| } |
| public virtual ITokenStream TokenStream { |
| get { |
| return input.TokenStream; |
| } |
| } |
| public virtual ITreeAdaptor TreeAdaptor { |
| get { |
| return adaptor; |
| } |
| } |
| public virtual object TreeSource { |
| get { |
| return input; |
| } |
| } |
| /** <summary> |
| * It is normally this object that instructs the node stream to |
| * create unique nav nodes, but to satisfy interface, we have to |
| * define it. It might be better to ignore the parameter but |
| * there might be a use for it later, so I'll leave. |
| * </summary> |
| */ |
| public bool UniqueNavigationNodes { |
| get { |
| return input.UniqueNavigationNodes; |
| } |
| set { |
| input.UniqueNavigationNodes = value; |
| } |
| } |
| |
| #endregion |
| |
| public virtual void Consume() { |
| object node = input.LT(1); |
| input.Consume(); |
| dbg.ConsumeNode(node); |
| } |
| |
| public virtual object this[int i] { |
| get { |
| return input[i]; |
| } |
| } |
| |
| public virtual object LT(int i) { |
| object node = input.LT(i); |
| int ID = adaptor.GetUniqueID(node); |
| string text = adaptor.GetText(node); |
| int type = adaptor.GetType(node); |
| dbg.LT(i, node); |
| return node; |
| } |
| |
| public virtual int LA(int i) { |
| object node = input.LT(i); |
| int ID = adaptor.GetUniqueID(node); |
| string text = adaptor.GetText(node); |
| int type = adaptor.GetType(node); |
| dbg.LT(i, node); |
| return type; |
| } |
| |
| public virtual int Mark() { |
| lastMarker = input.Mark(); |
| dbg.Mark(lastMarker); |
| return lastMarker; |
| } |
| |
| public virtual void Rewind(int marker) { |
| dbg.Rewind(marker); |
| input.Rewind(marker); |
| } |
| |
| public virtual void Rewind() { |
| dbg.Rewind(); |
| input.Rewind(lastMarker); |
| } |
| |
| public virtual void Release(int marker) { |
| } |
| |
| public virtual void Seek(int index) { |
| // TODO: implement seek in dbg interface |
| // db.seek(index); |
| input.Seek(index); |
| } |
| |
| public virtual int Count { |
| get { |
| return input.Count; |
| } |
| } |
| |
| public virtual string SourceName { |
| get { |
| return TokenStream.SourceName; |
| } |
| } |
| |
| public virtual void ReplaceChildren(object parent, int startChildIndex, int stopChildIndex, object t) { |
| input.ReplaceChildren(parent, startChildIndex, stopChildIndex, t); |
| } |
| |
| public virtual string ToString(object start, object stop) { |
| return input.ToString(start, stop); |
| } |
| } |
| } |