mirror of git://gcc.gnu.org/git/gcc.git
131 lines
4.1 KiB
Java
131 lines
4.1 KiB
Java
/* TemplateNode.java --
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Copyright (C) 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.xml.transform;
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import java.io.PrintStream;
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import java.util.Comparator;
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import javax.xml.namespace.QName;
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import javax.xml.transform.TransformerException;
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import org.w3c.dom.Node;
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import gnu.xml.xpath.DocumentOrderComparator;
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/**
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* Wrapper for a source node in a template.
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*
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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*/
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abstract class TemplateNode
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{
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static final Comparator<Node> documentOrderComparator =
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new DocumentOrderComparator();
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TemplateNode children;
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TemplateNode next;
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final void apply(Stylesheet stylesheet, QName mode,
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Node context, int pos, int len,
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Node parent, Node nextSibling)
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throws TransformerException
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{
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if (stylesheet.terminated)
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return;
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if (Thread.currentThread().isInterrupted())
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{
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// Try to head off any infinite loops at the pass
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return;
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}
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if (stylesheet.debug)
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{
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System.err.println("Applying " + toString());
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System.err.println("\twith context=" + context + ", pos=" + pos +
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", len=" + len);
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}
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doApply(stylesheet, mode, context, pos, len, parent, nextSibling);
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}
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abstract void doApply(Stylesheet stylesheet, QName mode,
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Node context, int pos, int len,
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Node parent, Node nextSibling)
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throws TransformerException;
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abstract TemplateNode clone(Stylesheet stylesheet);
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public boolean references(QName var)
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{
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if (children != null && children.references(var))
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return true;
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if (next != null && next.references(var))
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return true;
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return false;
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}
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/**
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* Debugging
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*/
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void list(int depth, PrintStream out, boolean listNext)
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{
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for (int i = 0; i < depth; i++)
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out.print(" ");
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out.println(toString());
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if (children != null)
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children.list(depth + 1, out, true);
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if (listNext && next != null)
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next.list(depth, out, listNext);
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}
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/**
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* Indicates whether the template for which this template node is the
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* first node specifies the given parameter.
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*/
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boolean hasParam(QName name)
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{
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for (TemplateNode ctx = this; ctx != null; ctx = ctx.next)
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{
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if (ctx instanceof ParameterNode)
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{
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ParameterNode param = (ParameterNode) ctx;
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if (param.type == Bindings.PARAM && param.name.equals(name))
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return true;
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}
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}
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return false;
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}
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}
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