151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Copyright (c) 1996, 2002, Oracle and/or its affiliates. All rights reserved. 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is free software; you can redistribute it and/or modify it 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * under the terms of the GNU General Public License version 2 only, as 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * published by the Free Software Foundation. Oracle designates this 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * particular file as subject to the "Classpath" exception as provided 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * by Oracle in the LICENSE file that accompanied this code. 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is distributed in the hope that it will be useful, but WITHOUT 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * version 2 for more details (a copy is included in the LICENSE file that 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * accompanied this code). 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You should have received a copy of the GNU General Public License version 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2 along with this work; if not, write to the Free Software Foundation, 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or visit www.oracle.com if you need additional information or have any 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * questions. 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved 2851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved 2951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 3051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The original version of this source code and documentation 3151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * is copyrighted and owned by Taligent, Inc., a wholly-owned 3251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * subsidiary of IBM. These materials are provided under terms 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * of a License Agreement between Taligent and Sun. This technology 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * is protected by multiple US and International patents. 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This notice and attribution to Taligent may not be removed. 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Taligent is a registered trademark of Taligent, Inc. 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipackage java.text; 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/** 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <code>StringCharacterIterator</code> implements the 4551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <code>CharacterIterator</code> protocol for a <code>String</code>. 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The <code>StringCharacterIterator</code> class iterates over the 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * entire <code>String</code>. 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipublic final class StringCharacterIterator implements CharacterIterator 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski{ 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private String text; 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private int begin; 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private int end; 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // invariant: begin <= pos <= end 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private int pos; 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Constructs an iterator with an initial index of 0. 6251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public StringCharacterIterator(String text) 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this(text, 0); 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 6951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Constructs an iterator with the specified initial index. 7051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 7151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param text The String to be iterated over 7251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param pos Initial iterator position 7351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 7451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public StringCharacterIterator(String text, int pos) 7551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 7651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this(text, 0, text.length(), pos); 7751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 7951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 8051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Constructs an iterator over the given range of the given string, with the 8151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * index set at the specified position. 8251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 8351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param text The String to be iterated over 8451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param begin Index of the first character 8551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param end Index of the character following the last character 8651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param pos Initial iterator position 8751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 8851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public StringCharacterIterator(String text, int begin, int end, int pos) { 8951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (text == null) 9051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new NullPointerException(); 9151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.text = text; 9251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 9351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (begin < 0 || begin > end || end > text.length()) 9451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new IllegalArgumentException("Invalid substring range"); 9551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 9651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (pos < begin || pos > end) 9751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new IllegalArgumentException("Invalid position"); 9851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 9951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.begin = begin; 10051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.end = end; 10151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.pos = pos; 10251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 10351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 10451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 10551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Reset this iterator to point to a new string. This package-visible 10651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * method is used by other java.text classes that want to avoid allocating 10751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * new StringCharacterIterator objects every time their setText method 10851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * is called. 10951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 11051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param text The String to be iterated over 11151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @since 1.2 11251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 11351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public void setText(String text) { 11451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (text == null) 11551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new NullPointerException(); 11651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.text = text; 11751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.begin = 0; 11851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.end = text.length(); 11951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this.pos = 0; 12051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 12151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 12251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 12351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.first() for String. 12451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#first 12551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 12651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public char first() 12751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 12851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski pos = begin; 12951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return current(); 13051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 13151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 13251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 13351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.last() for String. 13451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#last 13551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 13651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public char last() 13751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 13851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (end != begin) { 13951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski pos = end - 1; 14051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } else { 14151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski pos = end; 14251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 14351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return current(); 14451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 14551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 14651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 14751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.setIndex() for String. 14851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#setIndex 14951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 15051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public char setIndex(int p) 15151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 15251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (p < begin || p > end) 15351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new IllegalArgumentException("Invalid index"); 15451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski pos = p; 15551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return current(); 15651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 15751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 15851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 15951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.current() for String. 16051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#current 16151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 16251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public char current() 16351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 16451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (pos >= begin && pos < end) { 16551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return text.charAt(pos); 16651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 16751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski else { 16851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return DONE; 16951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 17051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 17151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 17251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 17351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.next() for String. 17451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#next 17551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 17651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public char next() 17751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 17851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (pos < end - 1) { 17951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski pos++; 18051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return text.charAt(pos); 18151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 18251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski else { 18351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski pos = end; 18451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return DONE; 18551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 18651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 18751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 18851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 18951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.previous() for String. 19051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#previous 19151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 19251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public char previous() 19351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 19451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (pos > begin) { 19551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski pos--; 19651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return text.charAt(pos); 19751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 19851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski else { 19951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return DONE; 20051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 20151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 20251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 20351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 20451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.getBeginIndex() for String. 20551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#getBeginIndex 20651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 20751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public int getBeginIndex() 20851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 20951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return begin; 21051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 21151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 21251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 21351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.getEndIndex() for String. 21451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#getEndIndex 21551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 21651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public int getEndIndex() 21751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 21851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return end; 21951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 22051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 22151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 22251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Implements CharacterIterator.getIndex() for String. 22351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see CharacterIterator#getIndex 22451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 22551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public int getIndex() 22651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 22751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return pos; 22851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 22951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 23051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 23151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Compares the equality of two StringCharacterIterator objects. 23251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param obj the StringCharacterIterator object to be compared with. 23351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return true if the given obj is the same as this 23451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * StringCharacterIterator object; false otherwise. 23551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 23651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public boolean equals(Object obj) 23751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 23851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (this == obj) 23951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return true; 24051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (!(obj instanceof StringCharacterIterator)) 24151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return false; 24251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 24351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski StringCharacterIterator that = (StringCharacterIterator) obj; 24451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 24551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (hashCode() != that.hashCode()) 24651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return false; 24751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (!text.equals(that.text)) 24851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return false; 24951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (pos != that.pos || begin != that.begin || end != that.end) 25051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return false; 25151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return true; 25251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 25351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 25451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 25551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Computes a hashcode for this iterator. 25651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return A hash code 25751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 25851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public int hashCode() 25951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 26051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return text.hashCode() ^ pos ^ begin ^ end; 26151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 26251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 26351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 26451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Creates a copy of this iterator. 26551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return A copy of this 26651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 26751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public Object clone() 26851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 26951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski try { 27051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski StringCharacterIterator other 27151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski = (StringCharacterIterator) super.clone(); 27251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return other; 27351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 27451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski catch (CloneNotSupportedException e) { 27551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new InternalError(); 27651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 27751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 27851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 27951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 280