J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996-2002 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved |
| 28 | * (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved |
| 29 | * |
| 30 | * The original version of this source code and documentation is copyrighted |
| 31 | * and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These |
| 32 | * materials are provided under terms of a License Agreement between Taligent |
| 33 | * and Sun. This technology is protected by multiple US and International |
| 34 | * patents. This notice and attribution to Taligent may not be removed. |
| 35 | * Taligent is a registered trademark of Taligent, Inc. |
| 36 | * |
| 37 | */ |
| 38 | |
| 39 | package java.text; |
| 40 | |
| 41 | |
| 42 | /** |
| 43 | * <code>ParsePosition</code> is a simple class used by <code>Format</code> |
| 44 | * and its subclasses to keep track of the current position during parsing. |
| 45 | * The <code>parseObject</code> method in the various <code>Format</code> |
| 46 | * classes requires a <code>ParsePosition</code> object as an argument. |
| 47 | * |
| 48 | * <p> |
| 49 | * By design, as you parse through a string with different formats, |
| 50 | * you can use the same <code>ParsePosition</code>, since the index parameter |
| 51 | * records the current position. |
| 52 | * |
| 53 | * @author Mark Davis |
| 54 | * @see java.text.Format |
| 55 | */ |
| 56 | |
| 57 | public class ParsePosition { |
| 58 | |
| 59 | /** |
| 60 | * Input: the place you start parsing. |
| 61 | * <br>Output: position where the parse stopped. |
| 62 | * This is designed to be used serially, |
| 63 | * with each call setting index up for the next one. |
| 64 | */ |
| 65 | int index = 0; |
| 66 | int errorIndex = -1; |
| 67 | |
| 68 | /** |
| 69 | * Retrieve the current parse position. On input to a parse method, this |
| 70 | * is the index of the character at which parsing will begin; on output, it |
| 71 | * is the index of the character following the last character parsed. |
| 72 | */ |
| 73 | public int getIndex() { |
| 74 | return index; |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Set the current parse position. |
| 79 | */ |
| 80 | public void setIndex(int index) { |
| 81 | this.index = index; |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Create a new ParsePosition with the given initial index. |
| 86 | */ |
| 87 | public ParsePosition(int index) { |
| 88 | this.index = index; |
| 89 | } |
| 90 | /** |
| 91 | * Set the index at which a parse error occurred. Formatters |
| 92 | * should set this before returning an error code from their |
| 93 | * parseObject method. The default value is -1 if this is not set. |
| 94 | * @since 1.2 |
| 95 | */ |
| 96 | public void setErrorIndex(int ei) |
| 97 | { |
| 98 | errorIndex = ei; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Retrieve the index at which an error occurred, or -1 if the |
| 103 | * error index has not been set. |
| 104 | * @since 1.2 |
| 105 | */ |
| 106 | public int getErrorIndex() |
| 107 | { |
| 108 | return errorIndex; |
| 109 | } |
| 110 | /** |
| 111 | * Overrides equals |
| 112 | */ |
| 113 | public boolean equals(Object obj) |
| 114 | { |
| 115 | if (obj == null) return false; |
| 116 | if (!(obj instanceof ParsePosition)) |
| 117 | return false; |
| 118 | ParsePosition other = (ParsePosition) obj; |
| 119 | return (index == other.index && errorIndex == other.errorIndex); |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Returns a hash code for this ParsePosition. |
| 124 | * @return a hash code value for this object |
| 125 | */ |
| 126 | public int hashCode() { |
| 127 | return (errorIndex << 16) | index; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Return a string representation of this ParsePosition. |
| 132 | * @return a string representation of this object |
| 133 | */ |
| 134 | public String toString() { |
| 135 | return getClass().getName() + |
| 136 | "[index=" + index + |
| 137 | ",errorIndex=" + errorIndex + ']'; |
| 138 | } |
| 139 | } |