1 /* 2 * Copyright (c) 2006, 2018, 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 package java.lang; 27 28 abstract class CharacterData { getProperties(int ch)29 abstract int getProperties(int ch); getType(int ch)30 abstract int getType(int ch); isDigit(int ch)31 abstract boolean isDigit(int ch); isLowerCase(int ch)32 abstract boolean isLowerCase(int ch); isUpperCase(int ch)33 abstract boolean isUpperCase(int ch); isWhitespace(int ch)34 abstract boolean isWhitespace(int ch); isMirrored(int ch)35 abstract boolean isMirrored(int ch); isJavaIdentifierStart(int ch)36 abstract boolean isJavaIdentifierStart(int ch); isJavaIdentifierPart(int ch)37 abstract boolean isJavaIdentifierPart(int ch); isUnicodeIdentifierStart(int ch)38 abstract boolean isUnicodeIdentifierStart(int ch); isUnicodeIdentifierPart(int ch)39 abstract boolean isUnicodeIdentifierPart(int ch); isIdentifierIgnorable(int ch)40 abstract boolean isIdentifierIgnorable(int ch); toLowerCase(int ch)41 abstract int toLowerCase(int ch); toUpperCase(int ch)42 abstract int toUpperCase(int ch); toTitleCase(int ch)43 abstract int toTitleCase(int ch); digit(int ch, int radix)44 abstract int digit(int ch, int radix); getNumericValue(int ch)45 abstract int getNumericValue(int ch); getDirectionality(int ch)46 abstract byte getDirectionality(int ch); 47 48 //need to implement for JSR204 toUpperCaseEx(int ch)49 int toUpperCaseEx(int ch) { 50 return toUpperCase(ch); 51 } 52 toUpperCaseCharArray(int ch)53 char[] toUpperCaseCharArray(int ch) { 54 return null; 55 } 56 isOtherLowercase(int ch)57 boolean isOtherLowercase(int ch) { 58 return false; 59 } 60 isOtherUppercase(int ch)61 boolean isOtherUppercase(int ch) { 62 return false; 63 } 64 isOtherAlphabetic(int ch)65 boolean isOtherAlphabetic(int ch) { 66 return false; 67 } 68 isIdeographic(int ch)69 boolean isIdeographic(int ch) { 70 return false; 71 } 72 73 // Character <= 0xff (basic latin) is handled by internal fast-path 74 // to avoid initializing large tables. 75 // Note: performance of this "fast-path" code may be sub-optimal 76 // in negative cases for some accessors due to complicated ranges. 77 // Should revisit after optimization of table initialization. 78 of(int ch)79 static final CharacterData of(int ch) { 80 if (ch >>> 8 == 0) { // fast-path 81 return CharacterDataLatin1.instance; 82 } else { 83 switch(ch >>> 16) { //plane 00-16 84 case(0): 85 return CharacterData00.instance; 86 case(1): 87 return CharacterData01.instance; 88 case(2): 89 return CharacterData02.instance; 90 case(14): 91 return CharacterData0E.instance; 92 case(15): // Private Use 93 case(16): // Private Use 94 return CharacterDataPrivateUse.instance; 95 default: 96 return CharacterDataUndefined.instance; 97 } 98 } 99 } 100 } 101