01: /*
02: * ProGuard -- shrinking, optimization, obfuscation, and preverification
03: * of Java bytecode.
04: *
05: * Copyright (c) 2002 Eric Lafortune (eric@graphics.cornell.edu)
06: *
07: * This program is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License as published by the Free
09: * Software Foundation; either version 2 of the License, or (at your option)
10: * any later version.
11: *
12: * This program is distributed in the hope that it will be useful, but WITHOUT
13: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15: * more details.
16: *
17: * You should have received a copy of the GNU General Public License along
18: * with this program; if not, write to the Free Software Foundation, Inc.,
19: * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20: */
21: package proguard.io;
22:
23: /**
24: * This DataEntryFilter delegates filtering to a DataEntryFilter for its parent.
25: *
26: * @author Eric Lafortune
27: */
28: public class DataEntryParentFilter implements DataEntryFilter {
29: private final DataEntryFilter dataEntryFilter;
30:
31: /**
32: * Creates a new ParentFilter.
33: * @param dataEntryFilter the filter that will be applied to the data
34: * entry's parent.
35: */
36: public DataEntryParentFilter(DataEntryFilter dataEntryFilter) {
37: this .dataEntryFilter = dataEntryFilter;
38: }
39:
40: // Implementations for DataEntryFilter.
41:
42: public boolean accepts(DataEntry dataEntry) {
43: return dataEntry != null
44: && dataEntryFilter.accepts(dataEntry.getParent());
45: }
46: }
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