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-/* NameFunction.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., 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.xpath;
-
-import java.util.Collection;
-import java.util.List;
-import org.w3c.dom.Node;
-
-/**
- * The <code>name</code> function returns a string containing a QName
- * representing the expanded-name of the node in the argument node-set that
- * is first in document order. The QName must represent the expanded-name
- * with respect to the namespace declarations in effect on the node whose
- * expanded-name is being represented. Typically, this will be the QName
- * that occurred in the XML source. This need not be the case if there are
- * namespace declarations in effect on the node that associate multiple
- * prefixes with the same namespace. However, an implementation may include
- * information about the original prefix in its representation of nodes; in
- * this case, an implementation can ensure that the returned string is
- * always the same as the QName used in the XML source. If the argument
- * node-set is empty or the first node has no expanded-name, an empty string
- * is returned. If the argument it omitted, it defaults to a node-set with
- * the context node as its only member.
- *
- * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
- */
-final class NameFunction
- extends Expr
-{
-
- final Expr arg;
-
- NameFunction(List args)
- {
- this(args.size() > 0 ? (Expr) args.get(0) : null);
- }
-
- NameFunction(Expr arg)
- {
- this.arg = arg;
- }
-
- public Object evaluate(Node context, int pos, int len)
- {
- Object val = (arg == null) ? null : arg.evaluate(context, pos, len);
- return _name(context, (Collection) val);
- }
-
- public Expr clone(Object context)
- {
- return new NameFunction((arg == null) ? null :
- arg.clone(context));
- }
-
- public String toString()
- {
- return (arg == null) ? "name()" : "name(" + arg + ")";
- }
-
-}
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