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annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/FrameSlotTypeSpecializationTest.java @ 14628:a08b8694f556

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Truffle: Node API changes deprecate adoptChild, no longer needed in constructor add Node#insert for inserting new nodes into the tree (previously adoptChild) add Node#adoptChildren() helper method that adopts all (direct and indirect) children of a node, automatically called in TruffleRuntime#createCallTarget
author Andreas Woess <andreas.woess@jku.at>
date Wed, 19 Mar 2014 23:11:46 +0100
parents ac5b0f31f7a2
children 64dcb92ee75a
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1 /*
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2 * Copyright (c) 2012, 2013, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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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21 * questions.
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22 */
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23 package com.oracle.truffle.api.test;
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25 import org.junit.*;
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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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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#setKind(FrameSlotKind)} method.
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38 * </p>
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39 *
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40 * <p>
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41 * The next part of the Truffle API introduction is at
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42 * {@link com.oracle.truffle.api.test.ReturnTypeSpecializationTest}.
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43 * </p>
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44 */
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45 public class FrameSlotTypeSpecializationTest {
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46
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47 @Test
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48 public void test() {
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49 TruffleRuntime runtime = Truffle.getRuntime();
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50 FrameDescriptor frameDescriptor = new FrameDescriptor();
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51 FrameSlot slot = frameDescriptor.addFrameSlot("localVar", FrameSlotKind.Int);
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52 TestRootNode rootNode = new TestRootNode(frameDescriptor, new IntAssignLocal(slot, new StringTestChildNode()), new IntReadLocal(slot));
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53 CallTarget target = runtime.createCallTarget(rootNode);
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54 Assert.assertEquals(FrameSlotKind.Int, slot.getKind());
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55 Object result = target.call();
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56 Assert.assertEquals("42", result);
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57 Assert.assertEquals(FrameSlotKind.Object, slot.getKind());
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58 }
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60 class TestRootNode extends RootNode {
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62 @Child TestChildNode left;
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63 @Child TestChildNode right;
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64
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65 public TestRootNode(FrameDescriptor descriptor, TestChildNode left, TestChildNode right) {
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66 super(null, descriptor);
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67 this.left = left;
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68 this.right = right;
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69 }
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71 @Override
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72 public Object execute(VirtualFrame frame) {
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73 left.execute(frame);
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74 return right.execute(frame);
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75 }
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76 }
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78 abstract class TestChildNode extends Node {
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79
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80 protected TestChildNode() {
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81 super(null);
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82 }
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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 {
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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 = value;
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112 }
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113
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114 @Override
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115 Object execute(VirtualFrame frame) {
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116 Object o = value.execute(frame);
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117 if (o instanceof Integer) {
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118 frame.setInt(slot, (Integer) o);
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119 } else {
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120 frame.setObject(slot, o);
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121 this.replace(new ObjectAssignLocal(slot, value));
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122 }
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123 return null;
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124 }
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125 }
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126
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127 class ObjectAssignLocal extends FrameSlotNode {
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128
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129 @Child private TestChildNode value;
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130
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131 ObjectAssignLocal(FrameSlot slot, TestChildNode value) {
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132 super(slot);
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133 this.value = value;
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134 }
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135
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136 @Override
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137 Object execute(VirtualFrame frame) {
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138 Object o = value.execute(frame);
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139 frame.setObject(slot, o);
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140 return null;
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141 }
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142 }
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143
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144 class IntReadLocal extends FrameSlotNode {
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145
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146 IntReadLocal(FrameSlot slot) {
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147 super(slot);
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148 }
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149
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150 @Override
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151 Object execute(VirtualFrame frame) {
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152 try {
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153 return frame.getInt(slot);
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154 } catch (FrameSlotTypeException e) {
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155 return this.replace(new ObjectReadLocal(slot)).execute(frame);
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156 }
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157 }
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158 }
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159
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160 class ObjectReadLocal extends FrameSlotNode {
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161
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162 ObjectReadLocal(FrameSlot slot) {
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163 super(slot);
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164 }
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165
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166 @Override
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167 Object execute(VirtualFrame frame) {
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168 try {
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169 return frame.getObject(slot);
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170 } catch (FrameSlotTypeException e) {
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171 throw new IllegalStateException(e);
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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.
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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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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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