| /* |
| [The "BSD licence"] |
| Copyright (c) 2005-2008 Terence Parr |
| 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. |
| */ |
| package org.eclipse.persistence.internal.libraries.antlr.runtime.debug; |
| |
| import org.eclipse.persistence.internal.libraries.antlr.runtime.tree.TreeAdaptor; |
| import org.eclipse.persistence.internal.libraries.antlr.runtime.tree.TreeNodeStream; |
| import org.eclipse.persistence.internal.libraries.antlr.runtime.TokenStream; |
| |
| /** Debug any tree node stream. The constructor accepts the stream |
| * and a debug listener. As node stream calls come in, debug events |
| * are triggered. |
| */ |
| public class DebugTreeNodeStream implements TreeNodeStream { |
| protected DebugEventListener dbg; |
| protected TreeAdaptor adaptor; |
| protected TreeNodeStream input; |
| protected boolean initialStreamState = true; |
| |
| /** Track the last mark() call result value for use in rewind(). */ |
| protected int lastMarker; |
| |
| public DebugTreeNodeStream(TreeNodeStream input, |
| DebugEventListener dbg) |
| { |
| this.input = input; |
| this.adaptor = input.getTreeAdaptor(); |
| this.input.setUniqueNavigationNodes(true); |
| setDebugListener(dbg); |
| } |
| |
| public void setDebugListener(DebugEventListener dbg) { |
| this.dbg = dbg; |
| } |
| |
| public TreeAdaptor getTreeAdaptor() { |
| return adaptor; |
| } |
| |
| public void consume() { |
| Object node = input.LT(1); |
| input.consume(); |
| dbg.consumeNode(node); |
| } |
| |
| public Object get(int i) { |
| return input.get(i); |
| } |
| |
| public 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 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 int mark() { |
| lastMarker = input.mark(); |
| dbg.mark(lastMarker); |
| return lastMarker; |
| } |
| |
| public int index() { |
| return input.index(); |
| } |
| |
| public void rewind(int marker) { |
| dbg.rewind(marker); |
| input.rewind(marker); |
| } |
| |
| public void rewind() { |
| dbg.rewind(); |
| input.rewind(lastMarker); |
| } |
| |
| public void release(int marker) { |
| } |
| |
| public void seek(int index) { |
| // TODO: implement seek in dbg interface |
| // db.seek(index); |
| input.seek(index); |
| } |
| |
| public int size() { |
| return input.size(); |
| } |
| |
| public void reset() { ; } |
| |
| public Object getTreeSource() { |
| return input; |
| } |
| |
| public String getSourceName() { |
| return getTokenStream().getSourceName(); |
| } |
| |
| public TokenStream getTokenStream() { |
| return input.getTokenStream(); |
| } |
| |
| /** 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. |
| */ |
| public void setUniqueNavigationNodes(boolean uniqueNavigationNodes) { |
| input.setUniqueNavigationNodes(uniqueNavigationNodes); |
| } |
| |
| public void replaceChildren(Object parent, int startChildIndex, int stopChildIndex, Object t) { |
| input.replaceChildren(parent, startChildIndex, stopChildIndex, t); |
| } |
| |
| public String toString(Object start, Object stop) { |
| return input.toString(start,stop); |
| } |
| } |