| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @author Nikolay A. Kuznetsov |
| */ |
| package java.util.regex; |
| |
| /** |
| * FSet for lookbehind constructs. Checks if string index saved by corresponding |
| * jointSet in "consumers" equals to current index and return current string |
| * index, return -1 otherwise. |
| * |
| * @author Nikolay A. Kuznetsov |
| */ |
| class BehindFSet extends FSet { |
| |
| public BehindFSet(int groupIndex) { |
| super(groupIndex); |
| } |
| |
| public int matches(int stringIndex, CharSequence testString, |
| MatchResultImpl matchResult) { |
| |
| int gr = getGroupIndex(); |
| int rightBound = matchResult.getConsumed(gr); |
| return (rightBound == stringIndex) ? stringIndex : -1; |
| } |
| |
| protected String getName() { |
| return "BehindFSet"; //$NON-NLS-1$ |
| } |
| } |