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annotate graal/com.oracle.truffle.api.object/src/com/oracle/truffle/api/object/ObjectType.java @ 18407:f439fdb137a3

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Truffle: initial commit of object API
author Andreas Woess <andreas.woess@jku.at>
date Tue, 18 Nov 2014 16:18:45 +0100
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children 6db7923af642
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1 /*
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2 * Copyright (c) 2013, 2014, 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.object;
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26
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27 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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28
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29 public class ObjectType {
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30 /**
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31 * Delegate method for {@link DynamicObject#equals(Object)}.
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32 */
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33 public boolean equals(DynamicObject object, Object other) {
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34 return object == other;
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35 }
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36
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37 /**
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38 * Delegate method for {@link DynamicObject#hashCode()}.
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39 */
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40 public int hashCode(DynamicObject object) {
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41 return System.identityHashCode(object);
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42 }
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43
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44 /**
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45 * Delegate method for {@link DynamicObject#toString()}.
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46 */
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47 @TruffleBoundary
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48 public String toString(DynamicObject object) {
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49 return "DynamicObject<" + this.toString() + ">@" + Integer.toHexString(hashCode(object));
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50 }
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51
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52 /**
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53 * Creates a data object to be associated with a newly created shape.
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54 *
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55 * @param shape the shape for which to create the data object
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56 */
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57 public Object createShapeData(Shape shape) {
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58 return null;
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59 }
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60
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61 /**
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62 * Called when a new property is added to a shape.
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63 *
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64 * @param property the added property
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65 * @param shapeBefore shape before the property was added
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66 * @param shapeAfter shape after the property was added
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67 */
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68 public void onPropertyAdded(Property property, Shape shapeBefore, Shape shapeAfter) {
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69 }
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70 }