Mercurial > hg > truffle
annotate truffle/com.oracle.truffle.api.interop/src/com/oracle/truffle/api/interop/impl/SymbolInvokerImpl.java @ 22086:93bfc9602271
Recreate the CallTarget when number of arguments to the createExecute message changes
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Mon, 17 Aug 2015 15:49:18 +0200 |
parents | 77562c7bc5a6 |
children | 1e78795e7e6a |
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") |
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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 = (Class<? extends TruffleLanguage<?>>) lang.getClass(); |
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44 RootNode symbolNode; |
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45 if ((symbol instanceof String) || (symbol instanceof Number) || (symbol instanceof Boolean) || (symbol instanceof Character)) { |
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46 symbolNode = new ConstantRootNode(type, symbol); |
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47 } else { |
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48 Node executeMain = Message.createExecute(arr.length).createNode(); |
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49 symbolNode = new TemporaryRoot(type, executeMain, (TruffleObject) symbol, arr.length); |
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50 } |
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51 return Truffle.getRuntime().createCallTarget(symbolNode); |
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52 } |
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53 |
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54 private final class ConstantRootNode extends RootNode { |
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55 |
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56 private final Object value; |
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57 |
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58 public ConstantRootNode(Class<? extends TruffleLanguage<?>> lang, Object value) { |
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59 super(lang, null, null); |
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60 this.value = value; |
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61 } |
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62 |
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63 @Override |
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64 public Object execute(VirtualFrame vf) { |
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65 return value; |
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66 } |
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67 } |
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68 |
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69 private static class TemporaryRoot extends RootNode { |
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70 @Child private Node foreignAccess; |
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71 @Child private ConvertNode convert; |
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72 private final int argumentLength; |
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73 private final TruffleObject function; |
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74 |
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75 public TemporaryRoot(Class<? extends TruffleLanguage<?>> lang, Node foreignAccess, TruffleObject function, int argumentLength) { |
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76 super(lang, null, null); |
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77 this.foreignAccess = foreignAccess; |
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78 this.convert = new ConvertNode(); |
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79 this.function = function; |
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80 this.argumentLength = argumentLength; |
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81 } |
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82 |
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83 @Override |
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84 public Object execute(VirtualFrame frame) { |
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85 final Object[] args = frame.getArguments(); |
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86 if (args.length != argumentLength) { |
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87 throw new ArgumentsMishmashException(); |
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88 } |
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89 Object tmp = ForeignAccess.execute(foreignAccess, frame, function, args); |
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90 return convert.convert(frame, tmp); |
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91 } |
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92 } |
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93 |
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94 private static final class ConvertNode extends Node { |
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95 @Child private Node isNull; |
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96 @Child private Node isBoxed; |
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97 @Child private Node unbox; |
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98 |
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99 public ConvertNode() { |
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100 this.isNull = Message.IS_NULL.createNode(); |
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101 this.isBoxed = Message.IS_BOXED.createNode(); |
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102 this.unbox = Message.UNBOX.createNode(); |
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103 } |
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104 |
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105 Object convert(VirtualFrame frame, Object obj) { |
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106 if (obj instanceof TruffleObject) { |
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107 return convert(frame, (TruffleObject) obj); |
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108 } else { |
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109 return obj; |
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110 } |
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111 } |
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112 |
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113 private Object convert(VirtualFrame frame, TruffleObject obj) { |
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114 Object isBoxedResult; |
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115 try { |
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116 isBoxedResult = ForeignAccess.execute(isBoxed, frame, obj); |
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117 } catch (IllegalArgumentException ex) { |
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118 isBoxedResult = false; |
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119 } |
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120 if (Boolean.TRUE.equals(isBoxedResult)) { |
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121 return ForeignAccess.execute(unbox, frame, obj); |
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122 } else { |
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123 try { |
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124 Object isNullResult = ForeignAccess.execute(isNull, frame, obj); |
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125 if (Boolean.TRUE.equals(isNullResult)) { |
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126 return null; |
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127 } |
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128 } catch (IllegalArgumentException ex) { |
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129 // fallthrough |
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130 } |
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131 } |
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132 return obj; |
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133 } |
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134 } |
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135 } |