| /* |
| * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package build.tools.generatecharacter; |
| |
| import java.lang.reflect.*; |
| import java.util.*; |
| |
| /** Recovers and prints ranges for certain java.lang.Character |
| properties. Useful for generating fast-path Latin-1 code. */ |
| |
| public class PrintCharacterRanges { |
| static class BooleanRange { |
| private int begin; |
| private int end; |
| |
| BooleanRange(int begin, int end) { |
| this.begin = begin; |
| this.end = end; |
| } |
| |
| int begin() { return begin; } |
| int end() { return end; } |
| } |
| |
| private static List/*<BooleanRange>*/ recoverBooleanRanges(String methodName) throws Exception { |
| List result = new ArrayList(); |
| int currentRangeStart = -1; |
| Method method = Character.class.getDeclaredMethod(methodName, new Class[] { Character.TYPE }); |
| if (method == null) { |
| throw new RuntimeException("No method \"" + methodName + "\"(C) found"); |
| } |
| |
| for (int i = 0; i <= 255; i++) { |
| boolean methodRes = ((Boolean) method.invoke(null, new Object[] { new Character((char) i) })).booleanValue(); |
| if (methodRes) { |
| if (currentRangeStart < 0) { |
| currentRangeStart = i; |
| } |
| if (i == 255) { |
| result.add(new BooleanRange(currentRangeStart, i)); |
| } |
| } else { |
| if (currentRangeStart >= 0) { |
| result.add(new BooleanRange(currentRangeStart, i - 1)); |
| currentRangeStart = -1; |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| private static String describe(int num) { |
| StringBuffer s = new StringBuffer(); |
| s.append(num); |
| s.append(" ('"); |
| if (num > 32 && num < 123) { |
| s.append((char) num); |
| } else { |
| s.append("\\u"); |
| String hex = Long.toHexString(num).toUpperCase(); |
| for (int i = 0; i < (4 - hex.length()); i++) { |
| s.append('0'); |
| } |
| s.append(hex); |
| } |
| s.append("')"); |
| return s.toString(); |
| } |
| |
| private static void printBooleanRanges(List/*<BooleanRange>*/ ranges, String methodName) { |
| System.out.print(methodName + ":"); |
| for (Iterator iter = ranges.iterator(); iter.hasNext();) { |
| BooleanRange range = (BooleanRange) iter.next(); |
| System.out.print(" [ " + describe(range.begin()) + ", " + describe(range.end()) + " ]"); |
| } |
| System.out.println(""); |
| } |
| |
| private static void recoverAndPrintBooleanRanges(String methodName) throws Exception { |
| List ranges = recoverBooleanRanges(methodName); |
| printBooleanRanges(ranges, methodName); |
| } |
| |
| static class ShiftRange { |
| private int begin; |
| private int end; |
| private int offset; |
| |
| ShiftRange(int begin, int end, int offset) { |
| this.begin = begin; |
| this.end = end; |
| this.offset = offset; |
| } |
| |
| int begin() { return begin; } |
| int end() { return end; } |
| int offset() { return offset; } |
| } |
| |
| private static List/*<ShiftRange>*/ recoverShiftRanges(String methodName) throws Exception { |
| List result = new ArrayList(); |
| int currentRangeStart = -1; |
| int currentRangeOffset = -1; |
| Method method = Character.class.getDeclaredMethod(methodName, new Class[] { Character.TYPE }); |
| if (method == null) { |
| throw new RuntimeException("No method \"" + methodName + "\"(C) found"); |
| } |
| |
| for (int i = 0; i <= 255; i++) { |
| char methodRes = ((Character) method.invoke(null, new Object[] { new Character((char) i) })).charValue(); |
| if (methodRes != i) { |
| int offset = methodRes - i; |
| if (currentRangeStart < 0) { |
| currentRangeStart = i; |
| } else if (offset != currentRangeOffset) { |
| result.add(new ShiftRange(currentRangeStart, i - 1, currentRangeOffset)); |
| currentRangeStart = i; |
| } |
| currentRangeOffset = offset; |
| if (i == 255) { |
| result.add(new ShiftRange(currentRangeStart, i, currentRangeOffset)); |
| } |
| } else { |
| if (currentRangeStart >= 0) { |
| result.add(new ShiftRange(currentRangeStart, i - 1, currentRangeOffset)); |
| currentRangeStart = -1; |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| private static void printShiftRanges(List/*<ShiftRange>*/ ranges, String methodName) { |
| System.out.print(methodName + ":"); |
| boolean isFirst = true; |
| for (Iterator iter = ranges.iterator(); iter.hasNext();) { |
| ShiftRange range = (ShiftRange) iter.next(); |
| if (isFirst) { |
| isFirst = false; |
| } else { |
| System.out.print(", "); |
| } |
| System.out.print(" [ " + describe(range.begin()) + ", " + describe(range.end()) + " ] -> [ " + |
| describe((range.begin() + range.offset())) + ", " + describe((range.end() + range.offset())) + " ] (" + |
| range.offset() + ")"); |
| } |
| System.out.println(""); |
| } |
| |
| private static void recoverAndPrintShiftRanges(String methodName) throws Exception { |
| List ranges = recoverShiftRanges(methodName); |
| printShiftRanges(ranges, methodName); |
| } |
| |
| public static void main(String[] args) { |
| try { |
| recoverAndPrintBooleanRanges("isDefined"); |
| recoverAndPrintBooleanRanges("isDigit"); |
| recoverAndPrintBooleanRanges("isIdentifierIgnorable"); |
| recoverAndPrintBooleanRanges("isISOControl"); |
| recoverAndPrintBooleanRanges("isJavaIdentifierPart"); |
| recoverAndPrintBooleanRanges("isJavaIdentifierStart"); |
| recoverAndPrintBooleanRanges("isLetter"); |
| recoverAndPrintBooleanRanges("isLetterOrDigit"); |
| recoverAndPrintBooleanRanges("isLowerCase"); |
| recoverAndPrintBooleanRanges("isMirrored"); |
| recoverAndPrintBooleanRanges("isSpaceChar"); |
| recoverAndPrintBooleanRanges("isTitleCase"); |
| recoverAndPrintBooleanRanges("isUnicodeIdentifierPart"); |
| recoverAndPrintBooleanRanges("isUnicodeIdentifierStart"); |
| recoverAndPrintBooleanRanges("isUpperCase"); |
| recoverAndPrintBooleanRanges("isWhitespace"); |
| |
| recoverAndPrintShiftRanges("toUpperCase"); |
| recoverAndPrintShiftRanges("toLowerCase"); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| } |