Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/FrameTest.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 | f07cafa29db1 |
children | 07f8d136a05e |
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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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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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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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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24 |
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25 import org.junit.*; |
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26 |
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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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30 |
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31 /** |
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32 * <h3>Storing Values in Frame Slots</h3> |
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33 * |
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34 * <p> |
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35 * The frame is the preferred data structure for passing values between nodes. It can in particular |
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36 * be used for storing the values of local variables of the guest language. The |
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37 * {@link FrameDescriptor} represents the current structure of the frame. The method |
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38 * {@link FrameDescriptor#addFrameSlot(Object, Class)} can be used to create predefined frame slots. |
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39 * The setter and getter methods in the {@link Frame} class can be used to access the current value |
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40 * of a particular frame slot. |
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41 * </p> |
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42 * |
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43 * <p> |
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44 * There are five primitive types for slots available: {@link java.lang.Boolean}, |
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45 * {@link java.lang.Integer}, {@link java.lang.Long}, {@link java.lang.Float}, and |
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46 * {@link java.lang.Double} . It is encouraged to use those types whenever possible. Dynamically |
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47 * typed languages can speculate on the type of a value fitting into a primitive (see |
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48 * {@link FrameSlotTypeSpecializationTest}). When a frame slot is of one of those particular |
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49 * primitive types, its value may only be accessed with the respectively typed getter method ( |
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50 * {@link Frame#getBoolean}, {@link Frame#getInt}, {@link Frame#getLong}, {@link Frame#getFloat}, or |
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51 * {@link Frame#getDouble}) or setter method ({@link Frame#setBoolean}, {@link Frame#setInt}, |
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52 * {@link Frame#setLong}, {@link Frame#setFloat}, or {@link Frame#setDouble}) in the {@link Frame} |
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53 * class. |
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54 * </p> |
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55 * |
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56 * <p> |
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57 * The next part of the Truffle API introduction is at |
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58 * {@link com.oracle.truffle.api.test.FrameSlotTypeSpecializationTest}. |
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59 * </p> |
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60 */ |
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61 public class FrameTest { |
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62 |
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63 @Test |
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64 public void test() { |
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65 TruffleRuntime runtime = Truffle.getRuntime(); |
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66 FrameDescriptor frameDescriptor = new FrameDescriptor(); |
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67 FrameSlot slot = frameDescriptor.addFrameSlot("localVar", Integer.class); |
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68 TestRootNode rootNode = new TestRootNode(new AssignLocal(slot), new ReadLocal(slot)); |
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69 CallTarget target = runtime.createCallTarget(rootNode, frameDescriptor); |
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70 Object result = target.call(); |
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71 Assert.assertEquals(42, result); |
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72 } |
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73 |
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74 class TestRootNode extends RootNode { |
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75 |
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76 @Child TestChildNode left; |
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77 @Child TestChildNode right; |
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78 |
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79 public TestRootNode(TestChildNode left, TestChildNode right) { |
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80 this.left = adoptChild(left); |
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81 this.right = adoptChild(right); |
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82 } |
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83 |
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84 @Override |
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85 public Object execute(VirtualFrame frame) { |
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86 return left.execute(frame) + right.execute(frame); |
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87 } |
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88 } |
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89 |
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90 abstract class TestChildNode extends Node { |
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91 |
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92 abstract int execute(VirtualFrame frame); |
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93 } |
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94 |
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95 abstract class FrameSlotNode extends TestChildNode { |
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96 |
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97 protected final FrameSlot slot; |
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98 |
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99 public FrameSlotNode(FrameSlot slot) { |
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100 this.slot = slot; |
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101 } |
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102 } |
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103 |
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104 class AssignLocal extends FrameSlotNode { |
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105 |
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106 AssignLocal(FrameSlot slot) { |
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107 super(slot); |
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108 } |
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109 |
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110 @Override |
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111 int execute(VirtualFrame frame) { |
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112 frame.setInt(slot, 42); |
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113 return 0; |
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114 } |
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115 } |
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116 |
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117 class ReadLocal extends FrameSlotNode { |
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118 |
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119 ReadLocal(FrameSlot slot) { |
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120 super(slot); |
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121 } |
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122 |
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123 @Override |
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124 int execute(VirtualFrame frame) { |
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125 return frame.getInt(slot); |
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126 } |
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127 } |
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128 } |