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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/Accessor.java @ 21490:3286fb5fea4a

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Introducing standard I/O and error into Env and using TruffleVM to execute SL test cases. Adding SLTckTest to verify SL language interop.
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Tue, 26 May 2015 19:11:36 +0200
parents bb51b9a142b3
children 31fc2fce38f3
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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
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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.impl;
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26
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27 import com.oracle.truffle.api.TruffleLanguage;
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28 import com.oracle.truffle.api.vm.TruffleVM;
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29 import com.oracle.truffle.api.source.Source;
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30 import java.io.IOException;
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31 import java.lang.reflect.Constructor;
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32 import java.io.Reader;
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33 import java.io.Writer;
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34 import java.util.ServiceLoader;
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35
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36 /**
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37 * Communication between TruffleVM and TruffleLanguage API/SPI.
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38 */
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39 public abstract class Accessor {
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40 private static Accessor API;
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41 private static Accessor SPI;
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42 static {
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43 TruffleLanguage lng = new TruffleLanguage(null) {
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44 @Override
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45 protected Object eval(Source code) throws IOException {
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46 return null;
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47 }
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48
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49 @Override
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50 protected Object findExportedSymbol(String globalName) {
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51 return null;
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52 }
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53
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54 @Override
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55 protected Object getLanguageGlobal() {
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56 return null;
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57 }
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58
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59 @Override
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60 protected boolean isObjectOfLanguage(Object object) {
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61 return false;
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62 }
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63 };
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64 lng.hashCode();
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65 }
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66
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67 protected Accessor() {
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68 if (this.getClass().getSimpleName().endsWith("API")) {
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69 if (API != null) {
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70 throw new IllegalStateException();
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71 }
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72 API = this;
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73 } else {
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74 if (SPI != null) {
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75 throw new IllegalStateException();
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76 }
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77 SPI = this;
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78 }
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79 }
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80
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81 protected TruffleLanguage attachEnv(TruffleVM vm, Constructor<?> langClazz, Writer stdOut, Writer stdErr, Reader stdIn) {
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82 return API.attachEnv(vm, langClazz, stdOut, stdErr, stdIn);
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83 }
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84
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85 protected Object eval(TruffleLanguage l, Source s) throws IOException {
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86 return API.eval(l, s);
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87 }
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88
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89 protected Object importSymbol(TruffleVM vm, TruffleLanguage queryingLang, String globalName) {
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90 return SPI.importSymbol(vm, queryingLang, globalName);
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91 }
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92
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93 protected Object findExportedSymbol(TruffleLanguage l, String globalName) {
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94 return API.findExportedSymbol(l, globalName);
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95 }
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96
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97 protected Object languageGlobal(TruffleLanguage l) {
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98 return API.languageGlobal(l);
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99 }
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100
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101 protected Object invoke(Object obj, Object[] args) throws IOException {
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102 for (SymbolInvoker si : ServiceLoader.load(SymbolInvoker.class)) {
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103 return si.invoke(obj, args);
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104 }
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105 throw new IOException("No symbol invoker found!");
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106 }
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107
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108 }