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annotate jvmci/jdk.internal.jvmci.meta/src/jdk/internal/jvmci/meta/PlatformKind.java @ 22533:df053711614b

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Remove Value.getKind().
author Roland Schatz <roland.schatz@oracle.com>
date Tue, 08 Sep 2015 14:13:38 +0200
parents 45723ab25426
children c10d5fb9776b
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1 /*
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2 * Copyright (c) 2013, 2015, 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 jdk.internal.jvmci.meta;
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24
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25 /**
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26 * Represents a platform-specific low-level type for values.
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27 */
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28 public interface PlatformKind {
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29
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30 String name();
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31
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32 JavaConstant getDefaultValue();
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33
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34 public interface Key {
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35
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36 }
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37
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38 public class EnumKey<E extends Enum<E>> implements Key {
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39 private final Enum<E> e;
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40
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41 public EnumKey(Enum<E> e) {
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42 this.e = e;
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43 }
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44
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45 @Override
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46 public int hashCode() {
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47 return e.ordinal() ^ e.name().hashCode();
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48 }
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49
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50 @Override
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51 public boolean equals(Object obj) {
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52 if (obj == this) {
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53 return true;
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54 }
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55 if (obj instanceof EnumKey) {
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56 EnumKey<?> that = (EnumKey<?>) obj;
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57 return this.e == that.e;
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58 }
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59 return false;
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60 }
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61 }
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62
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63 /**
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64 * Gets a value associated with this object that can be used as a stable key in a map. The
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65 * {@link Object#hashCode()} implementation of the returned value should be stable between VM
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66 * executions.
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67 */
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68 Key getKey();
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69
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70 /**
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71 * Get the size in bytes of this {@link PlatformKind}.
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72 */
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73 int getSizeInBytes();
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74
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75 /**
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76 * Returns how many primitive values fit in this {@link PlatformKind}. For scalar types this is
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77 * one, for SIMD types it may be higher.
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78 */
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79 int getVectorLength();
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80
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81 /**
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82 * Gets a single type char that identifies this type for use in debug output.
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83 */
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84 char getTypeChar();
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85 }