Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.object/src/com/oracle/truffle/api/object/DynamicObject.java @ 21401:7ea471ed17e4
Fix handling of null flags in MetaspacePointerStamp operations.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Fri, 15 May 2015 13:52:46 +0200 |
parents | 723142fed324 |
children | 5f3dda39d205 |
rev | line source |
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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.*; |
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28 import com.oracle.truffle.api.interop.*; |
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29 |
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30 public abstract class DynamicObject implements TypedObject, TruffleObject { |
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31 /** |
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32 * Get the object's current shape. |
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33 */ |
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34 public abstract Shape getShape(); |
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35 |
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36 /** |
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37 * Get property value. |
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38 * |
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39 * @param key property identifier |
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40 * @param defaultValue return value if property is not found |
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41 * @return property value or defaultValue if object has no such property |
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42 */ |
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43 public abstract Object get(Object key, Object defaultValue); |
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44 |
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45 /** |
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46 * Set value of existing property. |
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47 * |
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48 * @param key property identifier |
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49 * @param value value to be set |
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50 * @return {@code true} if successful or {@code false} if property not found |
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51 */ |
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52 public abstract boolean set(Object key, Object value); |
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53 |
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54 /** |
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55 * Define new property or redefine existing property. |
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56 * |
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57 * @param key property identifier |
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58 * @param value value to be set |
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59 * @param flags flags to be set |
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60 */ |
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61 public abstract void define(Object key, Object value, int flags); |
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62 |
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63 /** |
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64 * Define new property with a static location or change existing property. |
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65 * |
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66 * @param key property identifier |
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67 * @param value value to be set |
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68 * @param flags flags to be set |
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69 * @param locationFactory factory function that creates a location for a given shape and value |
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70 */ |
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71 public abstract void define(Object key, Object value, int flags, LocationFactory locationFactory); |
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72 |
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73 /** |
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74 * Change property flags. |
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75 * |
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76 * @param key property identifier |
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77 * @param newFlags flags to be set |
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78 * @return {@code true} if successful or {@code false} if property not found |
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79 */ |
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80 public abstract boolean changeFlags(Object key, int newFlags); |
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81 |
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82 /** |
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83 * Change property flags. |
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84 * |
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85 * @param key property identifier |
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86 * @param flagsUpdateFunction function updating old flags to new flags |
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87 * @return {@code true} if successful or {@code false} if property not found |
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88 */ |
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89 public abstract boolean changeFlags(Object key, FlagsFunction flagsUpdateFunction); |
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90 |
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91 /** |
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92 * Delete property. |
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93 * |
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94 * @param key property identifier |
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95 * @return {@code true} if successful or {@code false} if property not found |
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96 */ |
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97 public abstract boolean delete(Object key); |
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98 |
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99 /** |
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100 * Returns the number of properties in this object. |
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101 */ |
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102 public abstract int size(); |
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103 |
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104 /** |
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105 * Returns {@code true} if this object contains no properties. |
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106 */ |
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107 public abstract boolean isEmpty(); |
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108 |
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109 /** |
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110 * Set object shape and grow storage if necessary. |
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111 * |
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112 * @param oldShape the object's current shape (must equal {@link #getShape()}) |
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113 * @param newShape the new shape to be set |
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114 */ |
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115 public abstract void setShapeAndGrow(Shape oldShape, Shape newShape); |
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116 |
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117 /** |
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118 * Set object shape and resize storage if necessary. |
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119 * |
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120 * @param oldShape the object's current shape (must equal {@link #getShape()}) |
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121 * @param newShape the new shape to be set |
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122 */ |
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123 public abstract void setShapeAndResize(Shape oldShape, Shape newShape); |
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124 |
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125 /** |
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126 * Ensure object shape is up-to-date. |
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127 * |
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128 * @return {@code true} if shape has changed |
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129 */ |
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130 public abstract boolean updateShape(); |
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131 |
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132 public interface FlagsFunction { |
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133 int apply(int t); |
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134 } |
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135 } |