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annotate graal/com.oracle.truffle.interop/src/com/oracle/truffle/interop/SymbolInvokerImpl.java @ 21468:99942eac9c6d

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Introducing TruffleVM - a central place to invoke code in any registered TruffleLanguage.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Fri, 22 May 2015 13:41:10 +0200
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children b1530a6cce8c ffdd2ec86f42
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99942eac9c6d Introducing TruffleVM - a central place to invoke code in any registered TruffleLanguage.
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1 /*
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2 * Copyright (c) 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. 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
99942eac9c6d Introducing TruffleVM - a central place to invoke code in any registered TruffleLanguage.
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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.interop;
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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.frame.FrameDescriptor;
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30 import com.oracle.truffle.api.frame.VirtualFrame;
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31 import com.oracle.truffle.api.interop.TruffleObject;
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32 import com.oracle.truffle.api.impl.SymbolInvoker;
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33 import com.oracle.truffle.api.nodes.RootNode;
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34 import com.oracle.truffle.interop.messages.Execute;
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35 import com.oracle.truffle.interop.messages.Receiver;
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36 import com.oracle.truffle.interop.node.ForeignObjectAccessNode;
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37 import java.io.IOException;
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38
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39 public final class SymbolInvokerImpl extends SymbolInvoker {
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40 static final FrameDescriptor UNUSED_FRAMEDESCRIPTOR = new FrameDescriptor();
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41
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42 @Override
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43 protected Object invoke(Object symbol, Object... arr) throws IOException {
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44 ForeignObjectAccessNode executeMain = ForeignObjectAccessNode.getAccess(Execute.create(Receiver.create(), arr.length));
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45 CallTarget callTarget = Truffle.getRuntime().createCallTarget(new TemporaryRoot(executeMain, (TruffleObject) symbol, arr));
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46 VirtualFrame frame = Truffle.getRuntime().createVirtualFrame(arr, UNUSED_FRAMEDESCRIPTOR);
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47 return callTarget.call(frame);
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48 }
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49
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50 private static class TemporaryRoot extends RootNode {
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51 @Child private ForeignObjectAccessNode foreignAccess;
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52 private final TruffleObject function;
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53 private final Object[] args;
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54
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55 public TemporaryRoot(ForeignObjectAccessNode foreignAccess, TruffleObject function, Object... args) {
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56 this.foreignAccess = foreignAccess;
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57 this.function = function;
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58 this.args = args;
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59 }
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60
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61 @Override
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62 public Object execute(VirtualFrame frame) {
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63 return foreignAccess.executeForeign(frame, function, args);
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64 }
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65 }
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66
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67 }