01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: /**
19: * @author Nikolay A. Kuznetsov
20: * @version $Revision: 1.8.2.2 $
21: */package java.util.regex;
22:
23: /**
24: * Represents "?" quantifier over leaf sets.
25: *
26: * @author Nikolay A. Kuznetsov
27: * @version $Revision: 1.8.2.2 $
28: */
29: class AltQuantifierSet extends LeafQuantifierSet {
30:
31: public AltQuantifierSet(LeafSet innerSet, AbstractSet next, int type) {
32: super (innerSet, next, type);
33: }
34:
35: public int matches(int stringIndex, CharSequence testString,
36: MatchResultImpl matchResult) {
37: int shift = 0;
38:
39: if ((shift = innerSet.matches(stringIndex, testString,
40: matchResult)) >= 0) {
41: return shift;
42: } else {
43: return next.matches(stringIndex, testString, matchResult);
44: }
45: }
46:
47: public void setNext(AbstractSet next) {
48: super.setNext(next);
49: innerSet.setNext(next);
50: }
51: }
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