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diff --git a/lib/antlr/antlr/TokenBuffer.h b/lib/antlr/antlr/TokenBuffer.h
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+#ifndef INC_TokenBuffer_h__
+#define INC_TokenBuffer_h__
+
+/* ANTLR Translator Generator
+ * Project led by Terence Parr at http://www.jGuru.com
+ * Software rights: http://www.antlr.org/license.html
+ *
+ * $Id$
+ */
+
+#include <antlr/config.h>
+#include <antlr/TokenStream.h>
+#include <antlr/CircularQueue.h>
+
+#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
+namespace antlr {
+#endif
+
+/**A Stream of Token objects fed to the parser from a TokenStream that can
+ * be rewound via mark()/rewind() methods.
+ * <p>
+ * A dynamic array is used to buffer up all the input tokens.  Normally,
+ * "k" tokens are stored in the buffer.  More tokens may be stored during
+ * guess mode (testing syntactic predicate), or when LT(i>k) is referenced.
+ * Consumption of tokens is deferred.  In other words, reading the next
+ * token is not done by conume(), but deferred until needed by LA or LT.
+ * <p>
+ *
+ * @todo: see if we can integrate this one with InputBuffer into one template
+ * or so.
+ *
+ * @see antlr.Token
+ * @see antlr.TokenStream
+ * @see antlr.TokenQueue
+ */
+class ANTLR_API TokenBuffer {
+public:
+	/** Create a token buffer */
+	TokenBuffer(TokenStream& input_);
+	virtual ~TokenBuffer();
+
+	/// Reset the input buffer to empty state
+	inline void reset( void )
+	{
+		nMarkers = 0;
+		markerOffset = 0;
+		numToConsume = 0;
+		queue.clear();
+	}
+
+	/** Get a lookahead token value */
+	int LA( unsigned int i );
+
+	/** Get a lookahead token */
+	RefToken LT( unsigned int i );
+
+	/** Return an integer marker that can be used to rewind the buffer to
+	 * its current state.
+	 */
+	unsigned int mark();
+
+	/**Rewind the token buffer to a marker.
+	 * @param mark Marker returned previously from mark()
+	 */
+	void rewind(unsigned int mark);
+
+	/** Mark another token for deferred consumption */
+	inline void consume()
+	{
+		numToConsume++;
+	}
+
+	/// Return the number of entries in the TokenBuffer
+	virtual unsigned int entries() const;
+
+private:
+	/** Ensure that the token buffer is sufficiently full */
+	void fill(unsigned int amount);
+	/** Sync up deferred consumption */
+	void syncConsume();
+
+protected:
+	/// Token source
+	TokenStream& input;
+
+	/// Number of active markers
+	unsigned int nMarkers;
+
+	/// Additional offset used when markers are active
+	unsigned int markerOffset;
+
+	/// Number of calls to consume() since last LA() or LT() call
+	unsigned int numToConsume;
+
+	/// Circular queue with Tokens
+	CircularQueue<RefToken> queue;
+
+private:
+	TokenBuffer(const TokenBuffer& other);
+	const TokenBuffer& operator=(const TokenBuffer& other);
+};
+
+/** Sync up deferred consumption */
+inline void TokenBuffer::syncConsume()
+{
+	if (numToConsume > 0)
+	{
+		if (nMarkers > 0)
+			markerOffset += numToConsume;
+		else
+			queue.removeItems( numToConsume );
+
+		numToConsume = 0;
+	}
+}
+
+#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
+}
+#endif
+
+#endif //INC_TokenBuffer_h__