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annotate truffle/com.oracle.truffle.api.vm/src/com/oracle/truffle/api/vm/SymbolInvokerImpl.java @ 22157:dc83cc1f94f2

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Using fully qualified imports
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Wed, 16 Sep 2015 11:33:22 +0200
parents e70b20f4bb00
children 1c0f490984d5
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1 /*
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2 * Copyright (c) 2014, 2015, 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. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.vm;
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26
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27 import com.oracle.truffle.api.CallTarget;
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28 import com.oracle.truffle.api.Truffle;
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29 import com.oracle.truffle.api.TruffleLanguage;
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30 import com.oracle.truffle.api.frame.VirtualFrame;
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31 import com.oracle.truffle.api.interop.ForeignAccess;
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32 import com.oracle.truffle.api.interop.Message;
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33 import com.oracle.truffle.api.interop.TruffleObject;
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34 import com.oracle.truffle.api.nodes.Node;
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35 import com.oracle.truffle.api.nodes.RootNode;
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36
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37 final class SymbolInvokerImpl {
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38 @SuppressWarnings({"unchecked", "rawtypes"})
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39 static CallTarget createCallTarget(TruffleLanguage<?> lang, Object symbol, Object... arr) {
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40 Class<? extends TruffleLanguage<?>> type;
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41 if (lang != null) {
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42 type = (Class) lang.getClass();
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43 } else {
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44 type = (Class) TruffleLanguage.class;
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45 }
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46 RootNode symbolNode;
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47 if ((symbol instanceof String) || (symbol instanceof Number) || (symbol instanceof Boolean) || (symbol instanceof Character)) {
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48 symbolNode = RootNode.createConstantNode(symbol);
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49 } else {
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50 Node executeMain = Message.createExecute(arr.length).createNode();
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51 symbolNode = createTemporaryRoot(type, executeMain, (TruffleObject) symbol, arr.length);
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52 }
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53 return Truffle.getRuntime().createCallTarget(symbolNode);
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54 }
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55
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56 @SuppressWarnings("rawtypes")
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57 public static RootNode createTemporaryRoot(Class<? extends TruffleLanguage> lang, Node foreignAccess, TruffleObject function, int argumentLength) {
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58 return new TemporaryRoot(lang, foreignAccess, function, argumentLength);
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59 }
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60
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61 static class TemporaryRoot extends RootNode {
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62 @Child private Node foreignAccess;
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63 @Child private ConvertNode convert;
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64 private final int argumentLength;
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65 private final TruffleObject function;
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66
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67 @SuppressWarnings("rawtypes")
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68 public TemporaryRoot(Class<? extends TruffleLanguage> lang, Node foreignAccess, TruffleObject function, int argumentLength) {
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69 super(lang, null, null);
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70 this.foreignAccess = foreignAccess;
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71 this.convert = new ConvertNode();
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72 this.function = function;
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73 this.argumentLength = argumentLength;
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74 }
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75
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76 @Override
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77 public Object execute(VirtualFrame frame) {
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78 final Object[] args = frame.getArguments();
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79 if (args.length != argumentLength) {
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80 throw new ArgumentsMishmashException();
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81 }
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82 Object tmp = ForeignAccess.execute(foreignAccess, frame, function, args);
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83 return convert.convert(frame, tmp);
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84 }
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85 }
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86
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87 private static final class ConvertNode extends Node {
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88 @Child private Node isNull;
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89 @Child private Node isBoxed;
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90 @Child private Node unbox;
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91
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92 public ConvertNode() {
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93 this.isNull = Message.IS_NULL.createNode();
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94 this.isBoxed = Message.IS_BOXED.createNode();
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95 this.unbox = Message.UNBOX.createNode();
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96 }
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97
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98 Object convert(VirtualFrame frame, Object obj) {
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99 if (obj instanceof TruffleObject) {
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100 return convert(frame, (TruffleObject) obj);
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101 } else {
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102 return obj;
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103 }
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104 }
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105
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106 private Object convert(VirtualFrame frame, TruffleObject obj) {
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107 Object isBoxedResult;
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108 try {
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109 isBoxedResult = ForeignAccess.execute(isBoxed, frame, obj);
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110 } catch (IllegalArgumentException ex) {
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111 isBoxedResult = false;
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112 }
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113 if (Boolean.TRUE.equals(isBoxedResult)) {
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114 return ForeignAccess.execute(unbox, frame, obj);
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115 } else {
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116 try {
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117 Object isNullResult = ForeignAccess.execute(isNull, frame, obj);
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118 if (Boolean.TRUE.equals(isNullResult)) {
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119 return null;
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120 }
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121 } catch (IllegalArgumentException ex) {
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122 // fallthrough
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123 }
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124 }
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125 return obj;
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126 }
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127 }
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128 }