001    /*
002     * Copyright 2010-2015 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.kotlin.parsing;
018    
019    public class FirstBefore extends AbstractTokenStreamPattern {
020        private final TokenStreamPredicate lookFor;
021        private final TokenStreamPredicate stopAt;
022    
023        public FirstBefore(TokenStreamPredicate lookFor, TokenStreamPredicate stopAt) {
024            this.lookFor = lookFor;
025            this.stopAt = stopAt;
026        }
027    
028        @Override
029        public boolean processToken(int offset, boolean topLevel) {
030            if (lookFor.matching(topLevel)) {
031                lastOccurrence = offset;
032                return true;
033            }
034            if (stopAt.matching(topLevel)) {
035                return true;
036            }
037            return false;
038        }
039    }