1 files changed, 77 insertions, 0 deletions
diff --git a/runtime/Java/src/main/java/org/antlr/runtime/debug/BlankDebugEventListener.java b/runtime/Java/src/main/java/org/antlr/runtime/debug/BlankDebugEventListener.java
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+++ b/runtime/Java/src/main/java/org/antlr/runtime/debug/BlankDebugEventListener.java
@@ -0,0 +1,77 @@
+/*
+ [The "BSD license"]
+ Copyright (c) 2005-2009 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.antlr.runtime.debug;
+
+import org.antlr.runtime.RecognitionException;
+import org.antlr.runtime.Token;
+
+/** A blank listener that does nothing; useful for real classes so
+ *  they don't have to have lots of blank methods and are less
+ *  sensitive to updates to debug interface.
+ */
+public class BlankDebugEventListener implements DebugEventListener {
+	public void enterRule(String grammarFileName, String ruleName) {}
+	public void exitRule(String grammarFileName, String ruleName) {}
+	public void enterAlt(int alt) {}
+	public void enterSubRule(int decisionNumber) {}
+	public void exitSubRule(int decisionNumber) {}
+	public void enterDecision(int decisionNumber, boolean couldBacktrack) {}
+	public void exitDecision(int decisionNumber) {}
+	public void location(int line, int pos) {}
+	public void consumeToken(Token token) {}
+	public void consumeHiddenToken(Token token) {}
+	public void LT(int i, Token t) {}
+	public void mark(int i) {}
+	public void rewind(int i) {}
+	public void rewind() {}
+	public void beginBacktrack(int level) {}
+	public void endBacktrack(int level, boolean successful) {}
+	public void recognitionException(RecognitionException e) {}
+	public void beginResync() {}
+	public void endResync() {}
+	public void semanticPredicate(boolean result, String predicate) {}
+	public void commence() {}
+	public void terminate() {}
+
+	// Tree parsing stuff
+
+	public void consumeNode(Object t) {}
+	public void LT(int i, Object t) {}
+
+	// AST Stuff
+
+	public void nilNode(Object t) {}
+	public void errorNode(Object t) {}
+	public void createNode(Object t) {}
+	public void createNode(Object node, Token token) {}
+	public void becomeRoot(Object newRoot, Object oldRoot) {}
+	public void addChild(Object root, Object child) {}
+	public void setTokenBoundaries(Object t, int tokenStartIndex, int tokenStopIndex) {}
+}
+
+