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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/runtime/SLFunctionForeignAccess.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
parents ed234a3178af
children
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1 /*
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2 * Copyright (c) 2014, 2014, 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.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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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.sl.runtime;
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24
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25 import com.oracle.truffle.api.CallTarget;
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26 import com.oracle.truffle.api.Truffle;
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27 import com.oracle.truffle.api.frame.VirtualFrame;
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28 import com.oracle.truffle.api.nodes.RootNode;
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29 import com.oracle.truffle.api.interop.TruffleObject;
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30 import com.oracle.truffle.api.interop.ForeignAccess;
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31 import com.oracle.truffle.api.interop.Message;
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32 import com.oracle.truffle.sl.nodes.call.SLDispatchNode;
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33 import com.oracle.truffle.sl.nodes.call.SLDispatchNodeGen;
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34 import java.math.BigInteger;
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35 import java.util.List;
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36
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37 /**
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38 * Implementation of foreign access for {@link SLFunction}.
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39 */
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40 final class SLFunctionForeignAccess implements ForeignAccess.Factory {
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41 public static final ForeignAccess INSTANCE = ForeignAccess.create(new SLFunctionForeignAccess());
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43 private SLFunctionForeignAccess() {
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44 }
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45
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46 @Override
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47 public boolean canHandle(TruffleObject o) {
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48 return o instanceof SLFunction;
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49 }
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50
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51 @Override
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52 public CallTarget accessMessage(Message tree) {
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53 if (Message.createExecute(0).equals(tree)) {
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54 return Truffle.getRuntime().createCallTarget(new SLForeignCallerRootNode());
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55 } else if (Message.IS_NULL.equals(tree)) {
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56 return Truffle.getRuntime().createCallTarget(new SLForeignNullCheckNode());
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57 } else {
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58 throw new IllegalArgumentException(tree.toString() + " not supported");
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59 }
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60 }
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61
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62 private static class SLForeignCallerRootNode extends RootNode {
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63 @Child private SLDispatchNode dispatch = SLDispatchNodeGen.create();
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64
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65 @Override
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66 public Object execute(VirtualFrame frame) {
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67 SLFunction function = (SLFunction) ForeignAccess.getReceiver(frame);
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68 // the calling convention of interop passes the receiver of a
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69 // function call (the this object)
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70 // as an implicit 1st argument; we need to ignore this argument for SL
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71 List<Object> args = ForeignAccess.getArguments(frame);
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72 Object[] arr = args.subList(1, args.size()).toArray();
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73 for (int i = 0; i < arr.length; i++) {
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74 Object a = arr[i];
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75 if (a instanceof Long) {
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76 continue;
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77 }
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78 if (a instanceof BigInteger) {
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79 continue;
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80 }
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81 if (a instanceof Number) {
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82 arr[i] = ((Number) a).longValue();
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83 }
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84 }
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85 return dispatch.executeDispatch(frame, function, arr);
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86 }
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87
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88 }
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89
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90 private static class SLForeignNullCheckNode extends RootNode {
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91 @Override
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92 public Object execute(VirtualFrame frame) {
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93 Object receiver = ForeignAccess.getReceiver(frame);
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94 return SLNull.SINGLETON == receiver;
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95 }
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96 }
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97 }