| Stephen Colebourne | 73c043f | 2013-02-12 09:25:43 -0800 | [diff] [blame] | 1 | /* |
| Lana Steuck | 657b9db | 2013-12-26 12:04:16 -0800 | [diff] [blame] | 2 | * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved. |
| Stephen Colebourne | 73c043f | 2013-02-12 09:25:43 -0800 | [diff] [blame] | 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 | } |