1 /* 2 * Copyright (c) 2006, 2011, 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 { 29 abstract int getProperties(int ch); 30 abstract int getType(int ch); 31 abstract boolean isWhitespace(int ch); 32 abstract boolean isMirrored(int ch); 33 abstract boolean isJavaIdentifierStart(int ch); 34 abstract boolean isJavaIdentifierPart(int ch); 35 abstract boolean isUnicodeIdentifierStart(int ch); 36 abstract boolean isUnicodeIdentifierPart(int ch); 37 abstract boolean isIdentifierIgnorable(int ch); 38 abstract int toLowerCase(int ch); 39 abstract int toUpperCase(int ch); 40 abstract int toTitleCase(int ch); 41 abstract int digit(int ch, int radix); 42 abstract int getNumericValue(int ch); 43 abstract byte getDirectionality(int ch); 44 45 //need to implement for JSR204 46 int toUpperCaseEx(int ch) { 47 return toUpperCase(ch); 48 } 49 50 char[] toUpperCaseCharArray(int ch) { 51 return null; 52 } 53 54 boolean isOtherLowercase(int ch) { 55 return false; 56 } 57 58 boolean isOtherUppercase(int ch) { 59 return false; 60 } 61 62 boolean isOtherAlphabetic(int ch) { 63 return false; 64 } 65 66 boolean isIdeographic(int ch) { 67 return false; 68 } 69 70 // Character <= 0xff (basic latin) is handled by internal fast-path 71 // to avoid initializing large tables. 72 // Note: performance of this "fast-path" code may be sub-optimal 73 // in negative cases for some accessors due to complicated ranges. 74 // Should revisit after optimization of table initialization. 75 76 static final CharacterData of(int ch) { 77 if (ch >>> 8 == 0) { // fast-path 78 return CharacterDataLatin1.instance; 79 } else { 80 switch(ch >>> 16) { //plane 00-16 81 case(0): 82 return CharacterData00.instance; 83 case(1): 84 return CharacterData01.instance; 85 case(2): 86 return CharacterData02.instance; 87 case(14): 88 return CharacterData0E.instance; 89 case(15): // Private Use 90 case(16): // Private Use 91 return CharacterDataPrivateUse.instance; 92 default: 93 return CharacterDataUndefined.instance; 94 } 95 } 96 } 97 }