Mercurial > hg > truffle
annotate graal/com.oracle.max.base/src/com/sun/max/lang/Chars.java @ 4222:8e2985cdaaa5
Renaming of VMExits and VMEntries part 3.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 04 Jan 2012 21:13:44 +0100 |
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1 /* |
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2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.sun.max.lang; |
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24 |
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25 import com.sun.max.util.*; |
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26 |
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27 /** |
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28 */ |
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29 public final class Chars { |
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30 |
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31 private Chars() { |
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32 } |
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33 |
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34 public static final int SIZE = 2; |
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35 |
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36 public static final Range VALUE_RANGE = new Range(Character.MIN_VALUE, Character.MAX_VALUE); |
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37 |
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38 public static boolean isHexDigit(char c) { |
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39 switch (c) { |
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40 case '0': |
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41 case '1': |
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42 case '2': |
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43 case '3': |
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44 case '4': |
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45 case '5': |
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46 case '6': |
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47 case '7': |
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48 case '8': |
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49 case '9': |
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50 case 'a': |
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51 case 'b': |
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52 case 'c': |
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53 case 'd': |
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54 case 'e': |
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55 case 'f': |
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56 case 'A': |
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57 case 'B': |
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58 case 'C': |
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59 case 'D': |
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60 case 'E': |
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61 case 'F': |
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62 return true; |
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63 } |
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64 return false; |
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65 } |
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66 |
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67 public static boolean isOctalDigit(char c) { |
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68 if (c < '0') { |
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69 return false; |
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70 } |
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71 return c <= '7'; |
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72 } |
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73 |
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74 public static String toJavaLiteral(char c) { |
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75 if (c == '\n') { |
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76 return "'\\n'"; |
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77 } |
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78 if (c == '\t') { |
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79 return "'\\t'"; |
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80 } |
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81 if (c == '\r') { |
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82 return "'\\r'"; |
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83 } |
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84 if (c < ' ' || c > 127) { |
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85 return "'\\" + Integer.toOctalString(c) + "'"; |
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86 } |
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87 return "'" + c + "'"; |
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88 } |
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89 } |