1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * See LICENSE.txt included in this distribution for the specific 9 * language governing permissions and limitations under the License. 10 * 11 * When distributing Covered Code, include this CDDL HEADER in each 12 * file and include the License file at LICENSE.txt. 13 * If applicable, add the following below this CDDL HEADER, with the 14 * fields enclosed by brackets "[]" replaced with your own identifying 15 * information: Portions Copyright [yyyy] [name of copyright owner] 16 * 17 * CDDL HEADER END 18 */ 19 20 /* 21 * Copyright (c) 2017, 2020, Chris Fraire <cfraire@me.com>. 22 */ 23 package org.opengrok.indexer.analysis.r; 24 25 import org.opengrok.indexer.analysis.JFlexJointLexer; 26 import org.opengrok.indexer.analysis.JFlexSymbolMatcher; 27 import org.opengrok.indexer.analysis.Resettable; 28 29 /** 30 * Represents an abstract base class for R lexers. 31 */ 32 public abstract class RLexer extends JFlexSymbolMatcher implements JFlexJointLexer, Resettable { 33 34 /** 35 * Calls {@link #phLOC()} if the yystate is not SCOMMENT. 36 */ chkLOC()37 public void chkLOC() { 38 int yystate = yystate(); 39 if (yystate != SCOMMENT()) { 40 phLOC(); 41 } 42 } 43 44 /** 45 * Subclasses must override to get the constant value created by JFlex to 46 * represent SCOMMENT. 47 */ SCOMMENT()48 public abstract int SCOMMENT(); 49 } 50