1 /* 2 * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 /** 27 * <code>BackEnd</code> is an abstract base class for a back-end of compiling 28 * Olson's zoneinfo database and generating Java zoneinfo database. 29 * 30 * @since 1.4 31 */ 32 abstract class BackEnd { 33 34 /** 35 * Receives each zone's TimeZone information which was created by 36 * {@link Zoneinfo#parse} in class <code>Zoneinfo</code>, 37 * and processes it. 38 * 39 * @param tz Timezone object for each zone 40 * @return 0 if no error occurred, otherwise 1. 41 */ 42 abstract int processZoneinfo(Timezone tz); 43 44 /** 45 * Receives whole information which is generated by JavaZic's front-end 46 * in the form of Mapping object and generates all Java zone information 47 * files. 48 * 49 * @param m Mappings object which is generated by 50 * {@link Main#compile() Main.compile()}. 51 * @return 0 if no error occurred, otherwise 1. 52 */ 53 abstract int generateSrc(Mappings m); 54 55 /** 56 * Decides which backend class should be used and returns its instance. 57 * @return an instance of backend class 58 */ 59 static BackEnd getBackEnd() { 60 if (Zoneinfo.isYearForTimeZoneDataSpecified) { 61 return new Simple(); 62 } else if (Main.outputDoc) { 63 return new GenDoc(); 64 } else { 65 return new Gen(); 66 } 67 } 68 }