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: 1.2.2.2 $
21: */package java.util.regex;
22:
23: /**
24: * FSet for lookbehind constructs. Checks if string index saved by corresponding
25: * jointSet in "consumers" equals to current index and return current string
26: * index, return -1 otherwise.
27: *
28: * @author Nikolay A. Kuznetsov
29: * @version $Revision: 1.2.2.2 $
30: */
31: class BehindFSet extends FSet {
32:
33: public BehindFSet(int groupIndex) {
34: super (groupIndex);
35: }
36:
37: public int matches(int stringIndex, CharSequence testString,
38: MatchResultImpl matchResult) {
39:
40: int gr = getGroupIndex();
41: int rightBound = matchResult.getConsumed(gr);
42: return (rightBound == stringIndex) ? stringIndex : -1;
43: }
44:
45: protected String getName() {
46: return "BehindFSet"; //$NON-NLS-1$
47: }
48: }
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