151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 26f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * Copyright (c) 2000, 2013, 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 Jastrzebskipackage java.lang; 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 286f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kongimport java.util.NoSuchElementException; 296f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kongimport java.util.PrimitiveIterator; 306f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kongimport java.util.Spliterator; 316f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kongimport java.util.Spliterators; 326f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kongimport java.util.function.IntConsumer; 336f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kongimport java.util.stream.IntStream; 346f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kongimport java.util.stream.StreamSupport; 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/** 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * A <tt>CharSequence</tt> is a readable sequence of <code>char</code> values. This 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * interface provides uniform, read-only access to many different kinds of 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <code>char</code> sequences. 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * A <code>char</code> value represents a character in the <i>Basic 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Multilingual Plane (BMP)</i> or a surrogate. Refer to <a 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * href="Character.html#unicode">Unicode Character Representation</a> for details. 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <p> This interface does not refine the general contracts of the {@link 4551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * java.lang.Object#equals(java.lang.Object) equals} and {@link 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * java.lang.Object#hashCode() hashCode} methods. The result of comparing two 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * objects that implement <tt>CharSequence</tt> is therefore, in general, 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * undefined. Each object may be implemented by a different class, and there 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * is no guarantee that each class will be capable of testing its instances 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * for equality with those of the other. It is therefore inappropriate to use 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * arbitrary <tt>CharSequence</tt> instances as elements in a set or as keys in 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * a map. </p> 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @author Mike McCloskey 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @since 1.4 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @spec JSR-51 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipublic interface CharSequence { 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 6251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns the length of this character sequence. The length is the number 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * of 16-bit <code>char</code>s in the sequence.</p> 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return the number of <code>char</code>s in this sequence 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int length(); 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 7051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns the <code>char</code> value at the specified index. An index ranges from zero 7151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * to <tt>length() - 1</tt>. The first <code>char</code> value of the sequence is at 7251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * index zero, the next at index one, and so on, as for array 7351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * indexing. </p> 7451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 7551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <p>If the <code>char</code> value specified by the index is a 7651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <a href="{@docRoot}/java/lang/Character.html#unicode">surrogate</a>, the surrogate 7751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * value is returned. 7851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 7951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param index the index of the <code>char</code> value to be returned 8051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 8151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return the specified <code>char</code> value 8251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 8351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @throws IndexOutOfBoundsException 8451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * if the <tt>index</tt> argument is negative or not less than 8551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <tt>length()</tt> 8651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 8751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski char charAt(int index); 8851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 8951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 9051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns a new <code>CharSequence</code> that is a subsequence of this sequence. 9151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The subsequence starts with the <code>char</code> value at the specified index and 9251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ends with the <code>char</code> value at index <tt>end - 1</tt>. The length 9351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * (in <code>char</code>s) of the 9451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * returned sequence is <tt>end - start</tt>, so if <tt>start == end</tt> 9551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * then an empty sequence is returned. </p> 9651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 9751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param start the start index, inclusive 9851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param end the end index, exclusive 9951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 10051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return the specified subsequence 10151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 10251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @throws IndexOutOfBoundsException 10351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * if <tt>start</tt> or <tt>end</tt> are negative, 10451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * if <tt>end</tt> is greater than <tt>length()</tt>, 10551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or if <tt>start</tt> is greater than <tt>end</tt> 10651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 10751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski CharSequence subSequence(int start, int end); 10851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 10951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 11051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns a string containing the characters in this sequence in the same 11151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * order as this sequence. The length of the string will be the length of 11251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * this sequence. </p> 11351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 11451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return a string consisting of exactly this sequence of characters 11551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 11651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public String toString(); 11751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 1186f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong /** 1196f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * Returns a stream of {@code int} zero-extending the {@code char} values 1206f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * from this sequence. Any char which maps to a <a 1216f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * href="{@docRoot}/java/lang/Character.html#unicode">surrogate code 1226f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * point</a> is passed through uninterpreted. 1236f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * 1246f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * <p>If the sequence is mutated while the stream is being read, the 1256f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * result is undefined. 1266f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * 1276f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * @return an IntStream of char values from this sequence 1286f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * @since 1.8 1296f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong */ 1306f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public default IntStream chars() { 1316f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong class CharIterator implements PrimitiveIterator.OfInt { 1326f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong int cur = 0; 1336f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 1346f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public boolean hasNext() { 1356f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong return cur < length(); 1366f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1376f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 1386f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public int nextInt() { 1396f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong if (hasNext()) { 1406f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong return charAt(cur++); 1416f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } else { 1426f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong throw new NoSuchElementException(); 1436f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1446f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1456f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 1466f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong @Override 1476f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public void forEachRemaining(IntConsumer block) { 1486f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong for (; cur < length(); cur++) { 1496f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong block.accept(charAt(cur)); 1506f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1516f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1526f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1536f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 1546f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong return StreamSupport.intStream(() -> 1556f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong Spliterators.spliterator( 1566f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong new CharIterator(), 1576f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong length(), 1586f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong Spliterator.ORDERED), 1596f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong Spliterator.SUBSIZED | Spliterator.SIZED | Spliterator.ORDERED, 1606f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong false); 1616f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1626f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 1636f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong /** 1646f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * Returns a stream of code point values from this sequence. Any surrogate 1656f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * pairs encountered in the sequence are combined as if by {@linkplain 1666f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * Character#toCodePoint Character.toCodePoint} and the result is passed 1676f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * to the stream. Any other code units, including ordinary BMP characters, 1686f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * unpaired surrogates, and undefined code units, are zero-extended to 1696f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * {@code int} values which are then passed to the stream. 1706f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * 1716f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * <p>If the sequence is mutated while the stream is being read, the result 1726f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * is undefined. 1736f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * 1746f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * @return an IntStream of Unicode code points from this sequence 1756f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong * @since 1.8 1766f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong */ 1776f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public default IntStream codePoints() { 1786f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong class CodePointIterator implements PrimitiveIterator.OfInt { 1796f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong int cur = 0; 1806f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 1816f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong @Override 1826f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public void forEachRemaining(IntConsumer block) { 1836f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong final int length = length(); 1846f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong int i = cur; 1856f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong try { 1866f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong while (i < length) { 1876f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong char c1 = charAt(i++); 1886f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong if (!Character.isHighSurrogate(c1) || i >= length) { 1896f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong block.accept(c1); 1906f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } else { 1916f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong char c2 = charAt(i); 1926f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong if (Character.isLowSurrogate(c2)) { 1936f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong i++; 1946f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong block.accept(Character.toCodePoint(c1, c2)); 1956f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } else { 1966f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong block.accept(c1); 1976f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1986f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 1996f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2006f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } finally { 2016f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong cur = i; 2026f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2036f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2046f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 2056f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public boolean hasNext() { 2066f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong return cur < length(); 2076f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2086f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 2096f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong public int nextInt() { 2106f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong final int length = length(); 2116f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 2126f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong if (cur >= length) { 2136f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong throw new NoSuchElementException(); 2146f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2156f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong char c1 = charAt(cur++); 2166f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong if (Character.isHighSurrogate(c1) && cur < length) { 2176f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong char c2 = charAt(cur); 2186f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong if (Character.isLowSurrogate(c2)) { 2196f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong cur++; 2206f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong return Character.toCodePoint(c1, c2); 2216f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2226f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2236f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong return c1; 2246f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2256f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 2266f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong 2276f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong return StreamSupport.intStream(() -> 2286f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong Spliterators.spliteratorUnknownSize( 2296f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong new CodePointIterator(), 2306f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong Spliterator.ORDERED), 2316f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong Spliterator.ORDERED, 2326f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong false); 2336f07fc6c80a7e85fdfffbc2ac4e15b53cdd04a3eYi Kong } 23451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 235