1 /*
2 * Copyright 2005 John G. Wilson
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 */
17
18 package groovy.util.slurpersupport;
19
20 import java.util.Iterator;
21 import java.util.Map;
22
23 import org.codehaus.groovy.runtime.InvokerHelper;
24
25 import groovy.lang.Closure;
26
27 /***
28 * @author John Wilson
29 *
30 */
31
32 public class FilteredNodeChildren extends NodeChildren {
33 private final Closure closure;
34
35 public FilteredNodeChildren(final GPathResult parent, final Closure closure, final Map namespaceTagHints) {
36 super(parent, parent.name, namespaceTagHints);
37 this.closure = closure;
38 }
39
40 /* (non-Javadoc)
41 * @see org.codehaus.groovy.sandbox.util.slurpersupport.NodeChildren#iterator()
42 */
43 public Iterator nodeIterator() {
44 return new NodeIterator(this.parent.iterator()) {
45 /* (non-Javadoc)
46 * @see org.codehaus.groovy.sandbox.util.slurpersupport.NodeIterator#getNextNode(java.util.Iterator)
47 */
48 protected Object getNextNode(final Iterator iter) {
49 while (iter.hasNext()) {
50 final Object node = iter.next();
51
52 if (InvokerHelper.asBool(FilteredNodeChildren.this.closure.call(new Object[]{node}))) {
53 return node;
54 }
55 }
56
57 return null;
58 }
59 };
60 }
61
62 }