Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/FrameSlotTypeSpecializationTest.java @ 7705:96a596d751ab
remove successorProbabilities from SwitchNode
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Mon, 04 Feb 2013 18:18:16 +0100 |
parents | 5e3d1a68664e |
children | 07f8d136a05e |
rev | line source |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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1 /* |
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2 * Copyright (c) 2012, 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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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7 * published by the Free Software Foundation. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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8 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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13 * accompanied this code). |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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14 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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15 * You should have received a copy of the GNU General Public License version |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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18 * |
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Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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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.oracle.truffle.api.test; |
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24 |
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25 import org.junit.*; |
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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.frame.*; |
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29 import com.oracle.truffle.api.nodes.*; |
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30 |
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31 /** |
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32 * <h3>Specializing Frame Slot Types</h3> |
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33 * |
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34 * <p> |
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35 * Dynamically typed languages can speculate on the type of a frame slot and only fall back at run |
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36 * time to a more generic type if necessary. The new type of a frame slot can be set using the |
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37 * {@link FrameSlot#setType(Class)} method. It is the responsibility of the language implementor to |
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38 * update the content of currently active frames (using {@link Frame#updateToLatestVersion()}). |
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39 * Also, nodes that depend a specific type of a frame slot must be replaced. Such node can register |
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40 * a listener that implements {@link FrameSlotTypeListener} using |
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41 * {@link FrameSlot#registerOneShotTypeListener(FrameSlotTypeListener)}. The event of a type change |
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42 * on the frame slot will fire only once for the next upcoming change. |
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43 * </p> |
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44 * |
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45 * <p> |
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46 * The next part of the Truffle API introduction is at |
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47 * {@link com.oracle.truffle.api.test.ReturnTypeSpecializationTest}. |
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48 * </p> |
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49 */ |
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50 public class FrameSlotTypeSpecializationTest { |
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51 |
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52 @Test |
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53 public void test() { |
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54 TruffleRuntime runtime = Truffle.getRuntime(); |
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55 FrameDescriptor frameDescriptor = new FrameDescriptor(); |
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56 FrameSlot slot = frameDescriptor.addFrameSlot("localVar", Integer.class); |
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57 TestRootNode rootNode = new TestRootNode(new IntAssignLocal(slot, new StringTestChildNode()), new IntReadLocal(slot)); |
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58 CallTarget target = runtime.createCallTarget(rootNode, frameDescriptor); |
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59 Assert.assertEquals(Integer.class, slot.getType()); |
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60 Object result = target.call(); |
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61 Assert.assertEquals("42", result); |
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62 Assert.assertEquals(Object.class, slot.getType()); |
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63 } |
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64 |
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65 class TestRootNode extends RootNode { |
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66 |
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67 @Child TestChildNode left; |
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68 @Child TestChildNode right; |
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69 |
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70 public TestRootNode(TestChildNode left, TestChildNode right) { |
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71 this.left = adoptChild(left); |
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72 this.right = adoptChild(right); |
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73 } |
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74 |
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75 @Override |
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76 public Object execute(VirtualFrame frame) { |
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77 left.execute(frame); |
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78 return right.execute(frame); |
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79 } |
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80 } |
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81 |
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82 abstract class TestChildNode extends Node { |
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83 |
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84 abstract Object execute(VirtualFrame frame); |
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85 } |
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86 |
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87 abstract class FrameSlotNode extends TestChildNode { |
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88 |
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89 protected final FrameSlot slot; |
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90 |
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91 public FrameSlotNode(FrameSlot slot) { |
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92 this.slot = slot; |
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93 } |
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94 } |
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95 |
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96 class StringTestChildNode extends TestChildNode { |
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97 |
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98 @Override |
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99 Object execute(VirtualFrame frame) { |
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100 return "42"; |
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101 } |
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102 |
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103 } |
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104 |
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105 class IntAssignLocal extends FrameSlotNode implements FrameSlotTypeListener { |
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106 |
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107 @Child private TestChildNode value; |
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108 |
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109 IntAssignLocal(FrameSlot slot, TestChildNode value) { |
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110 super(slot); |
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111 this.value = adoptChild(value); |
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112 slot.registerOneShotTypeListener(this); |
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113 } |
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114 |
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115 @Override |
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116 Object execute(VirtualFrame frame) { |
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117 Object o = value.execute(frame); |
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118 if (o instanceof Integer) { |
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119 frame.setInt(slot, (Integer) o); |
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120 } else { |
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121 slot.setType(Object.class); |
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122 frame.updateToLatestVersion(); |
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123 frame.setObject(slot, o); |
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124 } |
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125 return null; |
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126 } |
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127 |
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128 @Override |
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129 public void typeChanged(FrameSlot changedSlot, Class<?> oldType) { |
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130 if (changedSlot.getType() == Object.class) { |
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131 this.replace(new ObjectAssignLocal(changedSlot, value)); |
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132 } |
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133 } |
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134 } |
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135 |
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136 class ObjectAssignLocal extends FrameSlotNode { |
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137 |
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138 @Child private TestChildNode value; |
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139 |
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140 ObjectAssignLocal(FrameSlot slot, TestChildNode value) { |
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141 super(slot); |
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142 this.value = adoptChild(value); |
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143 } |
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144 |
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145 @Override |
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146 Object execute(VirtualFrame frame) { |
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147 Object o = value.execute(frame); |
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148 frame.setObject(slot, o); |
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149 return null; |
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150 } |
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151 } |
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152 |
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153 class IntReadLocal extends FrameSlotNode implements FrameSlotTypeListener { |
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154 |
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155 IntReadLocal(FrameSlot slot) { |
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156 super(slot); |
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157 slot.registerOneShotTypeListener(this); |
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158 } |
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159 |
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160 @Override |
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161 Object execute(VirtualFrame frame) { |
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162 return frame.getInt(slot); |
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163 } |
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164 |
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165 @Override |
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166 public void typeChanged(FrameSlot changedSlot, Class<?> oldType) { |
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167 if (changedSlot.getType() == Object.class) { |
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168 this.replace(new ObjectReadLocal(changedSlot)); |
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169 } |
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170 } |
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171 } |
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172 |
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173 class ObjectReadLocal extends FrameSlotNode { |
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174 |
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175 ObjectReadLocal(FrameSlot slot) { |
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176 super(slot); |
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177 } |
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179 @Override |
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180 Object execute(VirtualFrame frame) { |
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181 return frame.getObject(slot); |
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182 } |
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183 } |
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184 } |