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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/NodeClass.java @ 22403:5033b980cc68

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The (public!?) NodeClass constructor accepted Class parameter in truffle-0.9 version
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Fri, 20 Nov 2015 17:13:09 +0100
parents efbc311e9ff2
children fd53ccebb10b
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1 /*
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2 * Copyright (c) 2012, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.nodes;
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26
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27 import java.security.AccessController;
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28 import java.security.PrivilegedAction;
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29 import java.util.Iterator;
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30
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31 /**
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32 * Information about a {@link Node} class. A single instance of this class is allocated for every
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33 * subclass of {@link Node} that is used.
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34 */
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35 public abstract class NodeClass {
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36 private static final ClassValue<NodeClass> nodeClasses = new ClassValue<NodeClass>() {
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37 @SuppressWarnings("unchecked")
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38 @Override
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39 protected NodeClass computeValue(final Class<?> clazz) {
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40 assert Node.class.isAssignableFrom(clazz);
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41 return AccessController.doPrivileged(new PrivilegedAction<NodeClass>() {
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42 public NodeClass run() {
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43 return new NodeClassImpl((Class<? extends Node>) clazz);
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44 }
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45 });
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46 }
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47 };
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48
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49 public static NodeClass get(Class<? extends Node> clazz) {
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50 return nodeClasses.get(clazz);
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51 }
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52
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53 public static NodeClass get(Node node) {
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54 return node.getNodeClass();
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55 }
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56
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57 @SuppressWarnings("unused")
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58 public NodeClass(Class<? extends Node> clazz) {
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59 }
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60
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61 public abstract NodeFieldAccessor getNodeClassField();
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62
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63 public abstract NodeFieldAccessor[] getCloneableFields();
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64
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65 public abstract NodeFieldAccessor[] getFields();
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66
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67 public abstract NodeFieldAccessor getParentField();
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68
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69 public abstract NodeFieldAccessor[] getChildFields();
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70
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71 public abstract NodeFieldAccessor[] getChildrenFields();
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72
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73 public abstract Iterator<Node> makeIterator(Node node);
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74 }