1 /* NodeTypeTest.java --
2    Copyright (C) 2004,2006 Free Software Foundation, Inc.
3 
4 This file is part of GNU Classpath.
5 
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10 
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 General Public License for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING.  If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19 02110-1301 USA.
20 
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library.  Thus, the terms and
23 conditions of the GNU General Public License cover the whole
24 combination.
25 
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module.  An independent module is a module which is not derived from
33 or based on this library.  If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so.  If you do not wish to do so, delete this
36 exception statement from your version. */
37 
38 package gnu.xml.xpath;
39 
40 import javax.xml.namespace.QName;
41 import org.w3c.dom.Node;
42 import org.w3c.dom.ProcessingInstruction;
43 
44 /**
45  * Tests whether a node is of a given type.
46  *
47  * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
48  */
49 public final class NodeTypeTest
50   extends Test
51 {
52 
53   final short type;
54   final String data;
55 
NodeTypeTest(short type)56   public NodeTypeTest(short type)
57   {
58     this(type, null);
59   }
60 
NodeTypeTest(short type, String data)61   public NodeTypeTest(short type, String data)
62   {
63     this.type = type;
64     this.data = data;
65   }
66 
getNodeType()67   public short getNodeType()
68   {
69     return type;
70   }
71 
getData()72   public String getData()
73   {
74     return data;
75   }
76 
matches(Node node, int pos, int len)77   public boolean matches(Node node, int pos, int len)
78   {
79     short nodeType = node.getNodeType();
80     switch (nodeType)
81       {
82       case Node.ELEMENT_NODE:
83       case Node.ATTRIBUTE_NODE:
84       case Node.TEXT_NODE:
85       case Node.CDATA_SECTION_NODE:
86       case Node.COMMENT_NODE:
87       case Node.DOCUMENT_NODE:
88         if (type > 0)
89           {
90             if (nodeType != type)
91               return false;
92           }
93         return true;
94       case Node.PROCESSING_INSTRUCTION_NODE:
95         if (type > 0)
96           {
97             if (nodeType != type)
98               return false;
99             if (data != null &&
100                 !data.equals(((ProcessingInstruction) node).getTarget()))
101               return false;
102           }
103         return true;
104       default:
105         // Not part of XPath data model
106         return false;
107       }
108   }
109 
clone(Object context)110   public Test clone(Object context)
111   {
112     return new NodeTypeTest(type, data);
113   }
114 
references(QName var)115   public boolean references(QName var)
116   {
117     return false;
118   }
119 
toString()120   public String toString()
121   {
122     switch (type)
123       {
124       case 0:
125         return "node()";
126       case Node.TEXT_NODE:
127         return "text()";
128       case Node.COMMENT_NODE:
129         return "comment()";
130       case Node.PROCESSING_INSTRUCTION_NODE:
131         if (data != null)
132           {
133             return "processing-instruction('" + data + "')";
134           }
135         return "processing-instruction()";
136       default:
137         throw new IllegalStateException();
138       }
139   }
140 
141 }
142