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annotate truffle/com.oracle.truffle.api.test/src/com/oracle/truffle/api/CallTest.java @ 22426:0e9c0a0fdb40

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Run eclipseformat.
author Christian Humer <christian.humer@oracle.com>
date Wed, 02 Dec 2015 15:22:39 +0100
parents b39b603e2a1e
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1 /*
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2 * Copyright (c) 2012, 2013, 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.api;
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24
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25 import org.junit.After;
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26 import org.junit.Assert;
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27 import org.junit.Before;
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28 import org.junit.Test;
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29
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30 import com.oracle.truffle.api.frame.VirtualFrame;
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31 import com.oracle.truffle.api.nodes.RootNode;
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32 import com.oracle.truffle.api.utilities.InstrumentationTestMode;
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33
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34 /**
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35 * <h3>Calling Another Tree</h3>
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36 *
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37 * <p>
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38 * A guest language implementation can create multiple call targets using the
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39 * {@link TruffleRuntime#createCallTarget(RootNode)} method. Those call targets can be passed around
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40 * as normal Java objects and used for calling guest language methods.
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41 * </p>
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42 *
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43 * <p>
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44 * The next part of the Truffle API introduction is at {@link com.oracle.truffle.api.ArgumentsTest}.
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45 * </p>
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46 */
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47 public class CallTest {
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48
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49 @Before
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50 public void before() {
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51 InstrumentationTestMode.set(true);
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52 }
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53
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54 @After
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55 public void after() {
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56 InstrumentationTestMode.set(false);
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57 }
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58
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59 @Test
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60 public void test() {
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61 TruffleRuntime runtime = Truffle.getRuntime();
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62 CallTarget foo = runtime.createCallTarget(new ConstantRootNode(20));
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63 CallTarget bar = runtime.createCallTarget(new ConstantRootNode(22));
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64 CallTarget main = runtime.createCallTarget(new DualCallNode(foo, bar));
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65 Object result = main.call();
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66 Assert.assertEquals(42, result);
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67 }
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69 class DualCallNode extends RootNode {
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71 private final CallTarget firstTarget;
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72 private final CallTarget secondTarget;
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74 DualCallNode(CallTarget firstTarget, CallTarget secondTarget) {
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75 super(TestingLanguage.class, null, null);
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76 this.firstTarget = firstTarget;
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77 this.secondTarget = secondTarget;
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78 }
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80 @Override
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81 public Object execute(VirtualFrame frame) {
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82 return ((Integer) firstTarget.call()) + ((Integer) secondTarget.call());
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83 }
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84 }
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86 class ConstantRootNode extends RootNode {
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87
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88 private final int value;
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90 public ConstantRootNode(int value) {
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91 super(TestingLanguage.class, null, null);
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92 this.value = value;
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93 }
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95 @Override
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96 public Object execute(VirtualFrame frame) {
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97 return value;
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98 }
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99 }
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100 }