1 /* 2 * Copyright (c) 2012, 2013, 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 * This file is available under and governed by the GNU General Public 28 * License version 2 only, as published by the Free Software Foundation. 29 * However, the following notice accompanied the original version of this 30 * file: 31 * 32 * Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos 33 * 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions are met: 38 * 39 * * Redistributions of source code must retain the above copyright notice, 40 * this list of conditions and the following disclaimer. 41 * 42 * * Redistributions in binary form must reproduce the above copyright notice, 43 * this list of conditions and the following disclaimer in the documentation 44 * and/or other materials provided with the distribution. 45 * 46 * * Neither the name of JSR-310 nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 54 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 55 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 56 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 57 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 58 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 59 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 60 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 package java.time.format; 63 64 /** 65 * Enumeration of ways to handle the positive/negative sign. 66 * <p> 67 * The formatting engine allows the positive and negative signs of numbers 68 * to be controlled using this enum. 69 * See {@link DateTimeFormatterBuilder} for usage. 70 * 71 * @implSpec 72 * This is an immutable and thread-safe enum. 73 * 74 * @since 1.8 75 */ 76 public enum SignStyle { 77 78 /** 79 * Style to output the sign only if the value is negative. 80 * <p> 81 * In strict parsing, the negative sign will be accepted and the positive sign rejected. 82 * In lenient parsing, any sign will be accepted. 83 */ 84 NORMAL, 85 /** 86 * Style to always output the sign, where zero will output '+'. 87 * <p> 88 * In strict parsing, the absence of a sign will be rejected. 89 * In lenient parsing, any sign will be accepted, with the absence 90 * of a sign treated as a positive number. 91 */ 92 ALWAYS, 93 /** 94 * Style to never output sign, only outputting the absolute value. 95 * <p> 96 * In strict parsing, any sign will be rejected. 97 * In lenient parsing, any sign will be accepted unless the width is fixed. 98 */ 99 NEVER, 100 /** 101 * Style to block negative values, throwing an exception on printing. 102 * <p> 103 * In strict parsing, any sign will be rejected. 104 * In lenient parsing, any sign will be accepted unless the width is fixed. 105 */ 106 NOT_NEGATIVE, 107 /** 108 * Style to always output the sign if the value exceeds the pad width. 109 * A negative value will always output the '-' sign. 110 * <p> 111 * In strict parsing, the sign will be rejected unless the pad width is exceeded. 112 * In lenient parsing, any sign will be accepted, with the absence 113 * of a sign treated as a positive number. 114 */ 115 EXCEEDS_PAD; 116 117 /** 118 * Parse helper. 119 * 120 * @param positive true if positive sign parsed, false for negative sign 121 * @param strict true if strict, false if lenient 122 * @param fixedWidth true if fixed width, false if not 123 * @return 124 */ parse(boolean positive, boolean strict, boolean fixedWidth)125 boolean parse(boolean positive, boolean strict, boolean fixedWidth) { 126 switch (ordinal()) { 127 case 0: // NORMAL 128 // valid if negative or (positive and lenient) 129 return !positive || !strict; 130 case 1: // ALWAYS 131 case 4: // EXCEEDS_PAD 132 return true; 133 default: 134 // valid if lenient and not fixed width 135 return !strict && !fixedWidth; 136 } 137 } 138 139 } 140