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+/* CommentNode.java --
+ Copyright (C) 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.xml.transform;
+
+import javax.xml.namespace.QName;
+import javax.xml.transform.TransformerException;
+import org.w3c.dom.Comment;
+import org.w3c.dom.Document;
+import org.w3c.dom.DocumentFragment;
+import org.w3c.dom.Node;
+import gnu.xml.xpath.Expr;
+
+/**
+ * A template node representing the XSL <code>comment</code> instruction.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ */
+final class CommentNode
+ extends TemplateNode
+{
+
+ CommentNode(TemplateNode children, TemplateNode next)
+ {
+ super(children, next);
+ }
+
+ TemplateNode clone(Stylesheet stylesheet)
+ {
+ return new CommentNode((children == null) ? null :
+ children.clone(stylesheet),
+ (next == null) ? null :
+ next.clone(stylesheet));
+ }
+
+ void doApply(Stylesheet stylesheet, QName mode,
+ Node context, int pos, int len,
+ Node parent, Node nextSibling)
+ throws TransformerException
+ {
+ String value = "";
+ Document doc = (parent instanceof Document) ? (Document) parent :
+ parent.getOwnerDocument();
+ if (children != null)
+ {
+ // Create a document fragment to hold the text
+ DocumentFragment fragment = doc.createDocumentFragment();
+ // Apply children to the fragment
+ children.apply(stylesheet, mode,
+ context, pos, len,
+ fragment, null);
+ // Use XPath string-value of fragment
+ value = Expr.stringValue(fragment);
+ }
+ Comment comment = doc.createComment(value);
+ // Insert into result tree
+ if (nextSibling != null)
+ {
+ parent.insertBefore(comment, nextSibling);
+ }
+ else
+ {
+ parent.appendChild(comment);
+ }
+ if (next != null)
+ {
+ next.apply(stylesheet, mode,
+ context, pos, len,
+ parent, nextSibling);
+ }
+ }
+
+ public String toString()
+ {
+ StringBuffer buf = new StringBuffer(getClass().getName());
+ buf.append('[');
+ buf.append(']');
+ return buf.toString();
+ }
+
+}