1 files changed, 76 insertions, 0 deletions
diff --git a/runtime/Java/src/main/java/org/antlr/runtime/tree/RewriteRuleTokenStream.java b/runtime/Java/src/main/java/org/antlr/runtime/tree/RewriteRuleTokenStream.java
new file mode 100644
index 0000000..4cd7b08
--- /dev/null
+++ b/runtime/Java/src/main/java/org/antlr/runtime/tree/RewriteRuleTokenStream.java
@@ -0,0 +1,76 @@
+/*
+ [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.tree;
+
+import org.antlr.runtime.Token;
+
+import java.util.List;
+
+public class RewriteRuleTokenStream extends RewriteRuleElementStream {
+
+	public RewriteRuleTokenStream(TreeAdaptor adaptor, String elementDescription) {
+		super(adaptor, elementDescription);
+	}
+
+	/** Create a stream with one element */
+	public RewriteRuleTokenStream(TreeAdaptor adaptor,
+								  String elementDescription,
+								  Object oneElement)
+	{
+		super(adaptor, elementDescription, oneElement);
+	}
+
+	/** Create a stream, but feed off an existing list */
+	public RewriteRuleTokenStream(TreeAdaptor adaptor,
+								  String elementDescription,
+								  List elements)
+	{
+		super(adaptor, elementDescription, elements);
+	}
+
+	/** Get next token from stream and make a node for it */
+	public Object nextNode() {
+		Token t = (Token)_next();
+		return adaptor.create(t);
+	}
+
+	public Token nextToken() {
+		return (Token)_next();
+	}
+
+	/** Don't convert to a tree unless they explicitly call nextTree.
+	 *  This way we can do hetero tree nodes in rewrite.
+	 */
+	protected Object toTree(Object el) {
+		return el;
+	}
+
+	protected Object dup(Object el) {
+		throw new UnsupportedOperationException("dup can't be called for a token stream.");
+	}
+}