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| 1 | +/* | |
| 2 | + * Copyright (c) 2006, 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 | +} | |