Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/ReturnTypeSpecializationTest.java @ 7795:ee84a187f84a
Fixed minor bug.
author | Christian Humer <christian.humer@gmail.com> |
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date | Fri, 15 Feb 2013 19:36:03 +0100 |
parents | 5e3d1a68664e |
children | 0ac3e388445f |
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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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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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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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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5 * This code is free software; you can redistribute it and/or modify it |
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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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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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
a4b84ba6dc2e
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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
a4b84ba6dc2e
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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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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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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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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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21 * questions. |
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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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22 */ |
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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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23 package com.oracle.truffle.api.test; |
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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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24 |
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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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25 import org.junit.*; |
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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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26 |
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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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27 import com.oracle.truffle.api.*; |
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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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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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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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31 /** |
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32 * <h3>Specializing Return Types</h3> |
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33 * |
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34 * <p> |
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35 * In order to avoid boxing and/or type casts on the return value of a node, the return value the |
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36 * method for executing a node can have a specific type and need not be of type |
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37 * {@link java.lang.Object}. For dynamically typed languages, this return type is something that |
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38 * should be speculated on. When the speculation fails and the child node cannot return the |
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39 * appropriate type of value, it can use an {@link UnexpectedResultException} to still pass the |
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40 * result to the caller. In such a case, the caller must rewrite itself to a more general version in |
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41 * oder to avoid future failures of this kind. |
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42 * </p> |
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43 */ |
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44 public class ReturnTypeSpecializationTest { |
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45 |
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46 @Test |
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47 public void test() { |
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48 TruffleRuntime runtime = Truffle.getRuntime(); |
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49 FrameDescriptor frameDescriptor = new FrameDescriptor(); |
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50 FrameSlot slot = frameDescriptor.addFrameSlot("localVar", Integer.class); |
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51 TestRootNode rootNode = new TestRootNode(new IntAssignLocal(slot, new StringTestChildNode()), new IntReadLocal(slot)); |
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52 CallTarget target = runtime.createCallTarget(rootNode, frameDescriptor); |
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53 Assert.assertEquals(Integer.class, slot.getType()); |
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54 Object result = target.call(); |
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55 Assert.assertEquals("42", result); |
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56 Assert.assertEquals(Object.class, slot.getType()); |
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57 } |
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58 |
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59 class TestRootNode extends RootNode { |
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60 |
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61 @Child TestChildNode left; |
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62 @Child TestChildNode right; |
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63 |
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64 public TestRootNode(TestChildNode left, TestChildNode right) { |
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65 this.left = adoptChild(left); |
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66 this.right = adoptChild(right); |
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67 } |
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68 |
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69 @Override |
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70 public Object execute(VirtualFrame frame) { |
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71 left.execute(frame); |
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72 return right.execute(frame); |
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73 } |
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74 } |
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75 |
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76 abstract class TestChildNode extends Node { |
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77 |
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78 abstract Object execute(VirtualFrame frame); |
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79 |
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80 int executeInt(VirtualFrame frame) throws UnexpectedResultException { |
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81 Object result = execute(frame); |
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82 if (result instanceof Integer) { |
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83 return (Integer) result; |
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84 } |
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85 throw new UnexpectedResultException(result); |
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86 } |
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87 } |
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88 |
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89 abstract class FrameSlotNode extends TestChildNode { |
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90 |
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91 protected final FrameSlot slot; |
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92 |
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93 public FrameSlotNode(FrameSlot slot) { |
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94 this.slot = slot; |
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95 } |
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96 } |
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97 |
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98 class StringTestChildNode extends TestChildNode { |
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99 |
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100 @Override |
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101 Object execute(VirtualFrame frame) { |
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102 return "42"; |
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103 } |
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104 |
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105 } |
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106 |
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107 class IntAssignLocal extends FrameSlotNode implements FrameSlotTypeListener { |
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108 |
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109 @Child private TestChildNode value; |
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110 |
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111 IntAssignLocal(FrameSlot slot, TestChildNode value) { |
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112 super(slot); |
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113 this.value = adoptChild(value); |
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114 slot.registerOneShotTypeListener(this); |
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115 } |
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116 |
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117 @Override |
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118 Object execute(VirtualFrame frame) { |
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119 try { |
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120 frame.setInt(slot, value.executeInt(frame)); |
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121 } catch (UnexpectedResultException e) { |
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122 slot.setType(Object.class); |
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123 frame.updateToLatestVersion(); |
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124 frame.setObject(slot, e.getResult()); |
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125 } |
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126 return null; |
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127 } |
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128 |
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129 @Override |
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130 public void typeChanged(FrameSlot changedSlot, Class<?> oldType) { |
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131 if (changedSlot.getType() == Object.class) { |
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132 this.replace(new ObjectAssignLocal(changedSlot, value)); |
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133 } |
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134 } |
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135 } |
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136 |
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137 class ObjectAssignLocal extends FrameSlotNode { |
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138 |
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139 @Child private TestChildNode value; |
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140 |
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141 ObjectAssignLocal(FrameSlot slot, TestChildNode value) { |
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142 super(slot); |
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143 this.value = adoptChild(value); |
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144 } |
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145 |
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146 @Override |
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147 Object execute(VirtualFrame frame) { |
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148 Object o = value.execute(frame); |
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149 frame.setObject(slot, o); |
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150 return null; |
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151 } |
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152 } |
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153 |
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154 class IntReadLocal extends FrameSlotNode implements FrameSlotTypeListener { |
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155 |
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156 IntReadLocal(FrameSlot slot) { |
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157 super(slot); |
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158 slot.registerOneShotTypeListener(this); |
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159 } |
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160 |
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161 @Override |
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162 Object execute(VirtualFrame frame) { |
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163 return executeInt(frame); |
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164 } |
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165 |
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166 @Override |
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167 int executeInt(VirtualFrame frame) { |
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168 return frame.getInt(slot); |
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169 } |
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170 |
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171 @Override |
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172 public void typeChanged(FrameSlot changedSlot, Class<?> oldType) { |
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173 if (changedSlot.getType() == Object.class) { |
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174 this.replace(new ObjectReadLocal(changedSlot)); |
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175 } |
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176 } |
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177 } |
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178 |
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179 class ObjectReadLocal extends FrameSlotNode { |
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180 |
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181 ObjectReadLocal(FrameSlot slot) { |
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182 super(slot); |
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183 } |
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184 |
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185 @Override |
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186 Object execute(VirtualFrame frame) { |
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187 return frame.getObject(slot); |
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188 } |
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189 } |
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190 } |