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annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/vm/ImplicitExplicitExportTest.java @ 21716:2f9e4d984d16
Give languages a chance to do implicit exports. Prefer explicit exports over implicit ones.
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Thu, 04 Jun 2015 08:08:05 +0200 |
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children | 45083be8a812 |
rev | line source |
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Give languages a chance to do implicit exports. Prefer explicit exports over implicit ones.
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1 /* |
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2 * Copyright (c) 2012, 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. |
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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.test.vm; |
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24 |
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25 import com.oracle.truffle.api.TruffleLanguage; |
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26 import com.oracle.truffle.api.source.Source; |
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27 import com.oracle.truffle.api.vm.TruffleVM; |
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28 import java.io.IOException; |
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29 import java.io.Reader; |
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30 import java.util.Enumeration; |
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31 import java.util.HashMap; |
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32 import java.util.Map; |
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33 import java.util.Properties; |
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34 import static org.junit.Assert.*; |
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35 import org.junit.Before; |
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36 import org.junit.Test; |
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37 |
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38 public class ImplicitExplicitExportTest { |
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39 private TruffleVM vm; |
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40 |
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41 @Before |
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42 public void initializeVM() { |
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43 vm = TruffleVM.newVM().build(); |
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44 assertTrue("Found " + L1 + " language", vm.getLanguages().containsKey(L1)); |
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45 assertTrue("Found " + L2 + " language", vm.getLanguages().containsKey(L2)); |
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46 assertTrue("Found " + L3 + " language", vm.getLanguages().containsKey(L3)); |
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47 } |
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48 |
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49 @Test |
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50 public void explicitExportFound() throws IOException { |
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51 // @formatter:off |
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52 vm.eval(L1, |
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53 "explicit.ahoj=42" |
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54 ); |
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55 Object ret = vm.eval(L3, |
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56 "return=ahoj" |
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57 ); |
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58 // @formatter:on |
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59 assertEquals("42", ret); |
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60 } |
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61 |
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62 @Test |
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63 public void implicitExportFound() throws IOException { |
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64 // @formatter:off |
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65 vm.eval(L1, |
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66 "implicit.ahoj=42" |
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67 ); |
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68 Object ret = vm.eval(L3, |
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69 "return=ahoj" |
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70 ); |
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71 // @formatter:on |
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72 assertEquals("42", ret); |
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73 } |
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74 |
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75 @Test |
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76 public void explicitExportPreferred2() throws IOException { |
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77 // @formatter:off |
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78 vm.eval(L1, |
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79 "implicit.ahoj=42" |
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80 ); |
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81 vm.eval(L2, |
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82 "explicit.ahoj=43" |
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83 ); |
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84 Object ret = vm.eval(L3, |
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85 "return=ahoj" |
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86 ); |
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87 // @formatter:on |
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88 assertEquals("Explicit import from L2 is used", "43", ret); |
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89 assertEquals("Global symbol is also 43", "43", vm.findGlobalSymbol("ahoj").invoke(null)); |
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90 } |
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91 |
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92 @Test |
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93 public void explicitExportPreferred1() throws IOException { |
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94 // @formatter:off |
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95 vm.eval(L1, |
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96 "explicit.ahoj=43" |
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97 ); |
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98 vm.eval(L2, |
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99 "implicit.ahoj=42" |
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100 ); |
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101 Object ret = vm.eval(L3, |
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102 "return=ahoj" |
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103 ); |
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104 // @formatter:on |
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105 assertEquals("Explicit import from L2 is used", "43", ret); |
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106 assertEquals("Global symbol is also 43", "43", vm.findGlobalSymbol("ahoj").invoke(null)); |
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107 } |
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108 |
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109 private abstract static class AbstractExportImportLanguage extends TruffleLanguage { |
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110 protected AbstractExportImportLanguage(Env env) { |
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111 super(env); |
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112 } |
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113 |
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114 private final Map<String, String> explicit = new HashMap<>(); |
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115 private final Map<String, String> implicit = new HashMap<>(); |
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116 |
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117 @Override |
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118 protected Object eval(Source code) throws IOException { |
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119 Properties p = new Properties(); |
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120 try (Reader r = code.getReader()) { |
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121 p.load(r); |
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122 } |
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123 Enumeration<Object> en = p.keys(); |
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124 while (en.hasMoreElements()) { |
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125 Object n = en.nextElement(); |
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126 if (n instanceof String) { |
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127 String k = (String) n; |
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128 if (k.startsWith("explicit.")) { |
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129 explicit.put(k.substring(9), p.getProperty(k)); |
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130 } |
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131 if (k.startsWith("implicit.")) { |
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132 implicit.put(k.substring(9), p.getProperty(k)); |
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133 } |
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134 if (k.equals("return")) { |
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135 return env().importSymbol(p.getProperty(k)); |
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136 } |
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137 } |
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138 } |
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139 return null; |
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140 } |
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141 |
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142 @Override |
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143 protected Object findExportedSymbol(String globalName, boolean onlyExplicit) { |
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144 if (explicit.containsKey(globalName)) { |
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145 return explicit.get(globalName); |
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146 } |
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147 if (!onlyExplicit && implicit.containsKey(globalName)) { |
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148 return implicit.get(globalName); |
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149 } |
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150 return null; |
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151 } |
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152 |
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153 @Override |
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154 protected Object getLanguageGlobal() { |
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155 return null; |
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156 } |
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157 |
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158 @Override |
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159 protected boolean isObjectOfLanguage(Object object) { |
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160 return false; |
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161 } |
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162 } |
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163 |
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164 private static final String L1 = "application/x-test-import-export-1"; |
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165 private static final String L2 = "application/x-test-import-export-2"; |
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166 private static final String L3 = "application/x-test-import-export-3"; |
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167 |
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168 @TruffleLanguage.Registration(mimeType = L1, name = "ImportExport1") |
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169 public static final class ExportImportLanguage1 extends AbstractExportImportLanguage { |
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170 public ExportImportLanguage1(Env env) { |
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171 super(env); |
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172 } |
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173 } |
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174 |
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175 @TruffleLanguage.Registration(mimeType = L2, name = "ImportExport2") |
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176 public static final class ExportImportLanguage2 extends AbstractExportImportLanguage { |
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177 public ExportImportLanguage2(Env env) { |
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178 super(env); |
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179 } |
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180 } |
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181 |
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182 @TruffleLanguage.Registration(mimeType = L3, name = "ImportExport3") |
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183 public static final class ExportImportLanguage3 extends AbstractExportImportLanguage { |
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184 public ExportImportLanguage3(Env env) { |
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185 super(env); |
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186 } |
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187 } |
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188 |
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189 } |