Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/ReplaceTest.java @ 7505:1b00e067eafe
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author | Christian Humer <christian.humer@gmail.com> |
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date | Fri, 18 Jan 2013 13:41:46 +0100 |
parents | a4b84ba6dc2e |
children | 5e3d1a68664e |
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.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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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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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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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 |
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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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 |
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 |
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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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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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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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 static org.junit.Assert.*; |
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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 java.util.*; |
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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 |
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29 import org.junit.*; |
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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 import com.oracle.truffle.api.*; |
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32 import com.oracle.truffle.api.frame.*; |
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33 import com.oracle.truffle.api.nodes.*; |
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34 |
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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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35 |
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36 /** |
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37 * <h3>Replacing Nodes at Run Time</h3> |
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38 * |
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39 * <p> |
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40 * The structure of the Truffle tree can be changed at run time by replacing nodes using the {@link Node#replace(Node)} |
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41 * method. This method will automatically change the child pointer in the parent of the node and replace it with a |
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42 * pointer to the new node. |
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43 * </p> |
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44 * |
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45 * <p> |
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46 * Replacing nodes is a costly operation, so it should not happen too often. The convention is that the implementation |
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47 * of the Truffle nodes should ensure that there are maximal a small (and constant) number of node replacements per |
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48 * Truffle node. |
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49 * </p> |
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50 * |
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51 * <p> |
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52 * The next part of the Truffle API introduction is at {@link com.oracle.truffle.api.test.CallTest}. |
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53 * </p> |
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54 */ |
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55 public class ReplaceTest { |
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56 |
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57 @Test |
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58 public void test() { |
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59 TruffleRuntime runtime = Truffle.getRuntime(); |
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60 UnresolvedNode leftChild = new UnresolvedNode("20"); |
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61 UnresolvedNode rightChild = new UnresolvedNode("22"); |
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62 TestRootNode rootNode = new TestRootNode(new ValueNode[]{leftChild, rightChild}); |
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63 assertEquals(rootNode, leftChild.getParent()); |
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64 assertEquals(rootNode, rightChild.getParent()); |
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65 Iterator<Node> iterator = rootNode.getChildren().iterator(); |
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66 Assert.assertEquals(leftChild, iterator.next()); |
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67 Assert.assertEquals(rightChild, iterator.next()); |
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68 Assert.assertFalse(iterator.hasNext()); |
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69 CallTarget target = runtime.createCallTarget(rootNode); |
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70 Object result = target.call(); |
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71 assertEquals(42, result); |
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72 assertEquals(42, target.call()); |
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73 iterator = rootNode.getChildren().iterator(); |
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74 Assert.assertEquals(ResolvedNode.class, iterator.next().getClass()); |
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75 Assert.assertEquals(ResolvedNode.class, iterator.next().getClass()); |
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76 Assert.assertFalse(iterator.hasNext()); |
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77 iterator = rootNode.getChildren().iterator(); |
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78 Assert.assertEquals(rootNode, iterator.next().getParent()); |
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79 Assert.assertEquals(rootNode, iterator.next().getParent()); |
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80 Assert.assertFalse(iterator.hasNext()); |
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81 } |
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82 |
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83 class TestRootNode extends RootNode { |
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84 |
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85 @Children private ValueNode[] children; |
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86 |
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87 public TestRootNode(ValueNode[] children) { |
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88 this.children = adoptChildren(children); |
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89 } |
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90 |
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91 @Override |
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92 public Object execute(VirtualFrame frame) { |
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93 int sum = 0; |
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94 for (int i = 0; i < children.length; ++i) { |
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95 sum += children[i].execute(); |
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96 } |
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97 return sum; |
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98 } |
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99 } |
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100 |
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101 abstract class ValueNode extends Node { |
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102 abstract int execute(); |
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103 } |
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104 |
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105 class UnresolvedNode extends ValueNode { |
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106 private final String value; |
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107 |
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108 public UnresolvedNode(String value) { |
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109 this.value = value; |
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110 } |
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111 |
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112 @Override |
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113 int execute() { |
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114 int intValue = Integer.parseInt(value); |
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115 ResolvedNode newNode = this.replace(new ResolvedNode(intValue)); |
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116 return newNode.execute(); |
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117 } |
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118 } |
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119 |
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120 class ResolvedNode extends ValueNode { |
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121 private final int value; |
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122 |
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123 ResolvedNode(int value) { |
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124 this.value = value; |
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125 } |
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126 |
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127 @Override |
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128 int execute() { |
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129 return value; |
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130 } |
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131 } |
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132 } |
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133 |