| /* WhenNode.java -- |
| Copyright (C) 2004,2006 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., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 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.Node; |
| import gnu.xml.xpath.Expr; |
| |
| /** |
| * A template node representing an XSL <code>when</code> instruction. |
| * |
| * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
| */ |
| final class WhenNode |
| extends TemplateNode |
| { |
| |
| final Expr test; |
| |
| WhenNode(Expr test) |
| { |
| this.test = test; |
| } |
| |
| TemplateNode clone(Stylesheet stylesheet) |
| { |
| TemplateNode ret = new WhenNode(test.clone(stylesheet)); |
| if (children != null) |
| ret.children = children.clone(stylesheet); |
| if (next != null) |
| ret.next = next.clone(stylesheet); |
| return ret; |
| } |
| |
| void doApply(Stylesheet stylesheet, QName mode, |
| Node context, int pos, int len, |
| Node parent, Node nextSibling) |
| throws TransformerException |
| { |
| Object ret = test.evaluate(context, pos, len); |
| boolean success = (ret instanceof Boolean) ? |
| ((Boolean) ret).booleanValue() : |
| Expr._boolean(context, ret); |
| if (success) |
| { |
| if (children != null) |
| children.apply(stylesheet, mode, |
| context, pos, len, |
| parent, nextSibling); |
| } |
| else |
| { |
| if (next != null) |
| next.apply(stylesheet, mode, |
| context, pos, len, |
| parent, nextSibling); |
| } |
| } |
| |
| public boolean references(QName var) |
| { |
| if (test != null && test.references(var)) |
| return true; |
| return super.references(var); |
| } |
| |
| public String toString() |
| { |
| StringBuffer buf = new StringBuffer("when"); |
| buf.append('['); |
| buf.append("test="); |
| buf.append(test); |
| buf.append(']'); |
| return buf.toString(); |
| } |
| |
| } |