--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxws/src/share/jaxws_classes/com/sun/xml/internal/txw2/Content.java	Tue Mar 06 16:09:35 2012 -0800
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.xml.internal.txw2;
+
+/**
+ * @author Kohsuke Kawaguchi
+ */
+abstract class Content {
+    private Content next;
+
+    /**
+     * Returns null if the next token has not decided yet.
+     */
+    final Content getNext() {
+        return next;
+    }
+
+    /**
+     *
+     * @param doc
+     *      A {@link Content} object is so light-weight that
+     *      it doesn't even remember what document it belongs to.
+     *      So the caller needs to "remind" a {@link Content}
+     *      who its owner is.
+     */
+    final void setNext(Document doc,Content next) {
+        assert next!=null;
+        assert this.next==null : "next of "+this+" is already set to "+this.next;
+        this.next = next;
+        doc.run();
+    }
+
+    /**
+     * Returns true if this content is ready to be committed.
+     */
+    boolean isReadyToCommit() {
+        return true;
+    }
+
+    /**
+     * Returns true if this {@link Content} can guarantee that
+     * no more new namespace decls is necessary for the currently
+     * pending start tag.
+     */
+    abstract boolean concludesPendingStartTag();
+
+    /**
+     * Accepts a visitor.
+     */
+    abstract void accept(ContentVisitor visitor);
+
+    /**
+     * Called when this content is written to the output.
+     */
+    public void written() {
+    }
+}