Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/ChildrenNodesTest.java @ 18564:966081b8e830
guard against null element in HotSpotConstantReflectionProvider.readStableFieldValue
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 27 Nov 2014 11:45:13 +0100 |
parents | 8be5c68a779d |
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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, 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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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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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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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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24 |
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25 import java.util.*; |
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26 |
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27 import org.junit.*; |
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28 |
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29 import com.oracle.truffle.api.*; |
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30 import com.oracle.truffle.api.frame.*; |
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31 import com.oracle.truffle.api.nodes.*; |
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32 |
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33 /** |
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34 * <h3>Creating an Array of Children Nodes</h3> |
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35 * |
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36 * <p> |
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37 * An array of children nodes can be used as a field in a parent node. The field has to be annotated |
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38 * with {@link com.oracle.truffle.api.nodes.Node.Children} and must be declared private and final. |
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39 * Before assigning the field in the parent node constructor, {@link Node#adoptChildren} must be |
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40 * called in order to update the parent pointers in the child nodes. After filling the array with |
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41 * its first values, it must never be changed. It is only possible to call {@link Node#replace} on a |
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42 * child node. |
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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.FinalFieldTest}. |
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48 * </p> |
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49 */ |
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50 public class ChildrenNodesTest { |
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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 TestChildNode firstChild = new TestChildNode(); |
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56 TestChildNode secondChild = new TestChildNode(); |
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57 TestRootNode rootNode = new TestRootNode(new TestChildNode[]{firstChild, secondChild}); |
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58 CallTarget target = runtime.createCallTarget(rootNode); |
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59 Assert.assertEquals(rootNode, firstChild.getParent()); |
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60 Assert.assertEquals(rootNode, secondChild.getParent()); |
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61 Iterator<Node> iterator = rootNode.getChildren().iterator(); |
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62 Assert.assertEquals(firstChild, iterator.next()); |
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63 Assert.assertEquals(secondChild, iterator.next()); |
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64 Assert.assertFalse(iterator.hasNext()); |
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65 Object result = target.call(); |
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66 Assert.assertEquals(42, result); |
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67 } |
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68 |
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69 class TestRootNode extends RootNode { |
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70 |
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71 @Children private final TestChildNode[] children; |
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72 |
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73 public TestRootNode(TestChildNode[] children) { |
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74 super(null); |
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75 this.children = children; |
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76 } |
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77 |
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78 @Override |
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79 public Object execute(VirtualFrame frame) { |
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80 int sum = 0; |
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81 for (int i = 0; i < children.length; ++i) { |
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82 sum += children[i].execute(); |
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83 } |
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84 return sum; |
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85 } |
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86 } |
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87 |
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88 class TestChildNode extends Node { |
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89 |
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90 public TestChildNode() { |
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91 super(null); |
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92 } |
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93 |
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94 public int execute() { |
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95 return 21; |
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96 } |
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97 } |
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98 |
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99 @Test |
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100 public void testMultipleChildrenFields() { |
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101 TruffleRuntime runtime = Truffle.getRuntime(); |
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102 TestChildNode firstChild = new TestChildNode(); |
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103 TestChildNode secondChild = new TestChildNode(); |
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104 TestChildNode thirdChild = new TestChildNode(); |
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105 TestChildNode forthChild = new TestChildNode(); |
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106 TestRootNode rootNode = new TestRoot2Node(new TestChildNode[]{firstChild, secondChild}, new TestChildNode[]{thirdChild, forthChild}); |
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107 CallTarget target = runtime.createCallTarget(rootNode); |
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108 Assert.assertEquals(rootNode, firstChild.getParent()); |
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109 Assert.assertEquals(rootNode, secondChild.getParent()); |
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110 Assert.assertEquals(rootNode, thirdChild.getParent()); |
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111 Assert.assertEquals(rootNode, forthChild.getParent()); |
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112 Iterator<Node> iterator = rootNode.getChildren().iterator(); |
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113 Assert.assertEquals(firstChild, iterator.next()); |
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114 Assert.assertEquals(secondChild, iterator.next()); |
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115 Assert.assertEquals(thirdChild, iterator.next()); |
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116 Assert.assertEquals(forthChild, iterator.next()); |
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117 Assert.assertFalse(iterator.hasNext()); |
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118 Object result = target.call(); |
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119 Assert.assertEquals(2 * 42, result); |
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120 } |
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121 |
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122 class TestRoot2Node extends TestRootNode { |
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123 @Children private final TestChildNode[] children1; |
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124 @Children private final TestChildNode[] children2; |
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125 |
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126 public TestRoot2Node(TestChildNode[] children1, TestChildNode[] children2) { |
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127 super(new TestChildNode[0]); |
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128 this.children1 = children1; |
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129 this.children2 = children2; |
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130 } |
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131 |
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132 @Override |
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133 public Object execute(VirtualFrame frame) { |
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134 int sum = 0; |
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135 for (int i = 0; i < children1.length; ++i) { |
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136 sum += children1[i].execute(); |
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137 } |
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138 for (int i = 0; i < children2.length; ++i) { |
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139 sum += children2[i].execute(); |
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140 } |
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141 return sum; |
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142 } |
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143 } |
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144 } |