Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.api.interop/src/com/oracle/truffle/api/interop/impl/SymbolInvokerImpl.java @ 22096:1e78795e7e6a
Allow to specify globalSymbols when defining TruffleVM
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Tue, 18 Aug 2015 16:10:03 +0200 |
parents | 93bfc9602271 |
children | 29126a670f9b |
rev | line source |
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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.interop.impl; |
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26 |
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27 import java.io.*; |
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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.impl.*; |
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32 import com.oracle.truffle.api.interop.ForeignAccess; |
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33 import com.oracle.truffle.api.interop.Message; |
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34 import com.oracle.truffle.api.interop.TruffleObject; |
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35 import com.oracle.truffle.api.nodes.*; |
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36 |
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37 public final class SymbolInvokerImpl extends SymbolInvoker { |
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38 static final FrameDescriptor UNUSED_FRAMEDESCRIPTOR = new FrameDescriptor(); |
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39 |
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40 @SuppressWarnings({"unchecked", "rawtypes"}) |
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41 @Override |
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42 protected CallTarget createCallTarget(TruffleLanguage<?> lang, Object symbol, Object... arr) throws IOException { |
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43 Class<? extends TruffleLanguage<?>> type; |
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44 if (lang != null) { |
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45 type = (Class) lang.getClass(); |
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46 } else { |
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47 type = (Class) TruffleLanguage.class; |
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48 } |
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49 RootNode symbolNode; |
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50 if ((symbol instanceof String) || (symbol instanceof Number) || (symbol instanceof Boolean) || (symbol instanceof Character)) { |
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51 symbolNode = new ConstantRootNode(type, symbol); |
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52 } else { |
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53 Node executeMain = Message.createExecute(arr.length).createNode(); |
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54 symbolNode = new TemporaryRoot(type, executeMain, (TruffleObject) symbol, arr.length); |
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55 } |
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56 return Truffle.getRuntime().createCallTarget(symbolNode); |
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57 } |
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58 |
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59 private final class ConstantRootNode extends RootNode { |
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60 |
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61 private final Object value; |
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62 |
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63 public ConstantRootNode(Class<? extends TruffleLanguage<?>> lang, Object value) { |
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64 super(lang, null, null); |
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65 this.value = value; |
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66 } |
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67 |
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68 @Override |
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69 public Object execute(VirtualFrame vf) { |
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70 return value; |
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71 } |
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72 } |
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73 |
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74 private static class TemporaryRoot extends RootNode { |
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75 @Child private Node foreignAccess; |
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76 @Child private ConvertNode convert; |
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77 private final int argumentLength; |
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78 private final TruffleObject function; |
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79 |
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80 public TemporaryRoot(Class<? extends TruffleLanguage<?>> lang, Node foreignAccess, TruffleObject function, int argumentLength) { |
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81 super(lang, null, null); |
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82 this.foreignAccess = foreignAccess; |
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83 this.convert = new ConvertNode(); |
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84 this.function = function; |
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85 this.argumentLength = argumentLength; |
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86 } |
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87 |
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88 @Override |
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89 public Object execute(VirtualFrame frame) { |
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90 final Object[] args = frame.getArguments(); |
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91 if (args.length != argumentLength) { |
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92 throw new ArgumentsMishmashException(); |
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93 } |
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94 Object tmp = ForeignAccess.execute(foreignAccess, frame, function, args); |
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95 return convert.convert(frame, tmp); |
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96 } |
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97 } |
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98 |
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99 private static final class ConvertNode extends Node { |
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100 @Child private Node isNull; |
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101 @Child private Node isBoxed; |
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102 @Child private Node unbox; |
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103 |
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104 public ConvertNode() { |
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105 this.isNull = Message.IS_NULL.createNode(); |
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106 this.isBoxed = Message.IS_BOXED.createNode(); |
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107 this.unbox = Message.UNBOX.createNode(); |
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108 } |
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109 |
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110 Object convert(VirtualFrame frame, Object obj) { |
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111 if (obj instanceof TruffleObject) { |
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112 return convert(frame, (TruffleObject) obj); |
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113 } else { |
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114 return obj; |
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115 } |
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116 } |
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117 |
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118 private Object convert(VirtualFrame frame, TruffleObject obj) { |
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119 Object isBoxedResult; |
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120 try { |
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121 isBoxedResult = ForeignAccess.execute(isBoxed, frame, obj); |
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122 } catch (IllegalArgumentException ex) { |
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123 isBoxedResult = false; |
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124 } |
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125 if (Boolean.TRUE.equals(isBoxedResult)) { |
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126 return ForeignAccess.execute(unbox, frame, obj); |
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127 } else { |
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128 try { |
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129 Object isNullResult = ForeignAccess.execute(isNull, frame, obj); |
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130 if (Boolean.TRUE.equals(isNullResult)) { |
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131 return null; |
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132 } |
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133 } catch (IllegalArgumentException ex) { |
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134 // fallthrough |
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135 } |
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136 } |
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137 return obj; |
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138 } |
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139 } |
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140 } |