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annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/FrameSlotTypeSpecializationTest.java @ 21673:5024c80224c7

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moved com.oracle.graal.[amd64|sparc] to com.oracle.jvmci.[amd64|sparc] (JBS:GRAAL-53)
author Doug Simon <doug.simon@oracle.com>
date Tue, 02 Jun 2015 22:11:52 +0200
parents 94f16a759646
children
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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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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 slot.setKind(FrameSlotKind.Object);
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121 frame.setObject(slot, o);
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122 this.replace(new ObjectAssignLocal(slot, value));
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123 }
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124 return null;
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125 }
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126 }
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127
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128 class ObjectAssignLocal extends FrameSlotNode {
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129
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130 @Child private TestChildNode value;
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131
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132 ObjectAssignLocal(FrameSlot slot, TestChildNode value) {
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133 super(slot);
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134 this.value = value;
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135 }
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136
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137 @Override
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138 Object execute(VirtualFrame frame) {
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139 Object o = value.execute(frame);
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140 slot.setKind(FrameSlotKind.Object);
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141 frame.setObject(slot, o);
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142 return null;
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143 }
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144 }
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145
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146 class IntReadLocal extends FrameSlotNode {
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147
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148 IntReadLocal(FrameSlot slot) {
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149 super(slot);
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150 }
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151
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152 @Override
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153 Object execute(VirtualFrame frame) {
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154 try {
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155 return frame.getInt(slot);
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156 } catch (FrameSlotTypeException e) {
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157 return this.replace(new ObjectReadLocal(slot)).execute(frame);
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158 }
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159 }
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160 }
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161
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162 class ObjectReadLocal extends FrameSlotNode {
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163
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164 ObjectReadLocal(FrameSlot slot) {
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165 super(slot);
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166 }
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167
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168 @Override
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169 Object execute(VirtualFrame frame) {
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170 try {
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171 return frame.getObject(slot);
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
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parents: 7530
diff changeset
172 } catch (FrameSlotTypeException e) {
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7530
diff changeset
173 throw new IllegalStateException(e);
07f8d136a05e Truffle API changes for the Frame API. Introduction of Assumptions class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 7530
diff changeset
174 }
7267
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>
parents:
diff changeset
175 }
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>
parents:
diff changeset
176 }
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>
parents:
diff changeset
177 }