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annotate graal/com.oracle.truffle.api.interop/src/com/oracle/truffle/api/interop/impl/SymbolInvokerImpl.java @ 21770:c76742cc2c6f

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Polishing inter-operability APIs: Exposing only Message, TruffleObject and ForeignAccess-related classes.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Mon, 08 Jun 2015 04:50:13 +0200
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c76742cc2c6f Polishing inter-operability APIs: Exposing only Message, TruffleObject and ForeignAccess-related classes.
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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
c76742cc2c6f Polishing inter-operability APIs: Exposing only Message, TruffleObject and ForeignAccess-related classes.
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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
c76742cc2c6f Polishing inter-operability APIs: Exposing only Message, TruffleObject and ForeignAccess-related classes.
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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 @Override
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41 protected Object invoke(Object symbol, Object... arr) throws IOException {
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42 if (symbol instanceof String) {
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43 return symbol;
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44 }
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45 if (symbol instanceof Number) {
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46 return symbol;
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47 }
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48 if (symbol instanceof Boolean) {
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49 return symbol;
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50 }
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51 Node executeMain = Message.createExecute(arr.length).createNode();
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52 CallTarget callTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(executeMain, (TruffleObject) symbol, arr));
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53 VirtualFrame frame = Truffle.getRuntime().createVirtualFrame(arr, UNUSED_FRAMEDESCRIPTOR);
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54 Object ret = callTarget.call(frame);
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55 if (ret instanceof TruffleObject) {
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56 TruffleObject tret = (TruffleObject) ret;
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57 Object isBoxedResult;
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58 try {
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59 Node isBoxed = Message.IS_BOXED.createNode();
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60 CallTarget isBoxedTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(isBoxed, tret));
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61 isBoxedResult = isBoxedTarget.call(frame);
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62 } catch (IllegalArgumentException ex) {
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63 isBoxedResult = false;
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64 }
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65 if (Boolean.TRUE.equals(isBoxedResult)) {
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66 Node unbox = Message.UNBOX.createNode();
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67 CallTarget unboxTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(unbox, tret));
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68 Object unboxResult = unboxTarget.call(frame);
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69 return unboxResult;
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70 } else {
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71 try {
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72 Node isNull = Message.IS_NULL.createNode();
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73 CallTarget isNullTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(isNull, tret));
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74 Object isNullResult = isNullTarget.call(frame);
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75 if (Boolean.TRUE.equals(isNullResult)) {
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76 return null;
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77 }
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78 } catch (IllegalArgumentException ex) {
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79 // fallthrough
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80 }
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81 }
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82 }
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83 return ret;
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84 }
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85
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86 private static class TemporaryRoot extends RootNode {
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87 @Child private Node foreignAccess;
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88 private final TruffleObject function;
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89 private final Object[] args;
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90
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91 public TemporaryRoot(Node foreignAccess, TruffleObject function, Object... args) {
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92 this.foreignAccess = foreignAccess;
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93 this.function = function;
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94 this.args = args;
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95 }
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96
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97 @Override
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98 public Object execute(VirtualFrame frame) {
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99 return ForeignAccess.execute(foreignAccess, frame, function, args);
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100 }
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101 }
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102
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103 }