author | redestad |
Thu, 18 Aug 2016 19:00:39 +0200 | |
changeset 40408 | cf7e826d4d63 |
parent 40258 | e6ba2e5c7a29 |
child 40419 | 20e2e4b25a40 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.tools.jlink.internal.plugins; |
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import java.lang.invoke.MethodType; |
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import java.util.Arrays; |
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import java.util.EnumSet; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Set; |
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import java.util.stream.Collectors; |
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import jdk.internal.misc.SharedSecrets; |
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import jdk.internal.misc.JavaLangInvokeAccess; |
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import jdk.tools.jlink.plugin.ResourcePoolEntry; |
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import jdk.tools.jlink.plugin.PluginException; |
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import jdk.tools.jlink.plugin.ResourcePool; |
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import jdk.tools.jlink.plugin.ResourcePoolBuilder; |
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import jdk.tools.jlink.plugin.Plugin; |
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/** |
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* Plugin to generate java.lang.invoke classes. |
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*/ |
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public final class GenerateJLIClassesPlugin implements Plugin { |
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private static final String NAME = "generate-jli-classes"; |
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private static final String BMH_PARAM = "bmh"; |
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private static final String BMH_SPECIES_PARAM = "bmh-species"; |
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private static final String DMH_PARAM = "dmh"; |
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private static final String DESCRIPTION = PluginsResourceBundle.getDescription(NAME); |
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private static final String DIRECT_METHOD_HANDLE = "java/lang/invoke/DirectMethodHandle$Holder"; |
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private static final String DMH_INVOKE_VIRTUAL = "invokeVirtual"; |
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private static final String DMH_INVOKE_STATIC = "invokeStatic"; |
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private static final String DMH_INVOKE_SPECIAL = "invokeSpecial"; |
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private static final String DMH_NEW_INVOKE_SPECIAL = "newInvokeSpecial"; |
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private static final String DMH_INVOKE_INTERFACE = "invokeInterface"; |
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private static final String DMH_INVOKE_STATIC_INIT = "invokeStaticInit"; |
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private static final String DELEGATING_METHOD_HANDLE = "java/lang/invoke/DelegatingMethodHandle$Holder"; |
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|
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private static final JavaLangInvokeAccess JLIA |
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= SharedSecrets.getJavaLangInvokeAccess(); |
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List<String> speciesTypes; |
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Map<String, List<String>> dmhMethods; |
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public GenerateJLIClassesPlugin() { |
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} |
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@Override |
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public String getName() { |
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return NAME; |
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} |
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@Override |
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public String getDescription() { |
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return DESCRIPTION; |
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} |
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@Override |
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public Set<State> getState() { |
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return EnumSet.of(State.AUTO_ENABLED, State.FUNCTIONAL); |
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} |
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@Override |
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public boolean hasArguments() { |
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return true; |
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} |
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@Override |
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public String getArgumentsDescription() { |
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return PluginsResourceBundle.getArgument(NAME); |
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} |
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/** |
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* @return the default Species forms to generate. |
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* |
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* This list was derived from running a small startup benchmark. |
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* A better long-term solution is to define and run a set of quick |
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* generators and extracting this list as a step in the build process. |
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*/ |
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public static List<String> defaultSpecies() { |
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return List.of("LL", "L3", "L4", "L5", "L6", "L7", "L7I", |
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"L7II", "L7IIL", "L8", "L9", "L10", "L10I", "L10II", "L10IIL", |
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"L11", "L12", "L13", "LI", "D", "L3I", "LIL", "LLI", "LLIL", |
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"LILL", "I", "LLILL"); |
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} |
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/** |
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* @return the list of default DirectMethodHandle methods to generate. |
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*/ |
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public static Map<String, List<String>> defaultDMHMethods() { |
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return Map.of( |
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DMH_INVOKE_VIRTUAL, List.of("_L", "L_L", "LI_I", "LL_V"), |
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DMH_INVOKE_SPECIAL, List.of("L_I", "L_L", "LF_L", "LD_L", "LL_L", |
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"L3_L", "L4_L", "L5_L", "L6_L", "L7_L", "LI_I", "LI_L", "LIL_I", |
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"LII_I", "LII_L", "LLI_L", "LLI_I", "LILI_I", "LIIL_L", |
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"LIILL_L", "LIILL_I", "LIIL_I", "LILIL_I", "LILILL_I", |
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"LILII_I", "LI3_I", "LI3L_I", "LI3LL_I", "LI3_L", "LI4_I"), |
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DMH_INVOKE_STATIC, List.of("II_I", "IL_I", "ILIL_I", "ILII_I", |
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"_I", "_L", "_V", "D_L", "F_L", "I_I", "II_L", "LI_L", |
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130 |
"L_V", "L_L", "LL_L", "L3_L", "L4_L", "L5_L", "L6_L", |
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131 |
"L7_L", "L8_L", "L9_L", "L9I_L", "L9II_L", "L9IIL_L", |
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"L10_L", "L11_L", "L12_L", "L13_L", "L13I_L", "L13II_L") |
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); |
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134 |
} |
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135 |
|
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// Map from DirectMethodHandle method type to internal ID |
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private static final Map<String, Integer> DMH_METHOD_TYPE_MAP = |
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Map.of( |
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DMH_INVOKE_VIRTUAL, 0, |
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DMH_INVOKE_STATIC, 1, |
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DMH_INVOKE_SPECIAL, 2, |
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DMH_NEW_INVOKE_SPECIAL, 3, |
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DMH_INVOKE_INTERFACE, 4, |
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DMH_INVOKE_STATIC_INIT, 5 |
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145 |
); |
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146 |
|
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147 |
@Override |
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public void configure(Map<String, String> config) { |
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String mainArgument = config.get(NAME); |
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150 |
|
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151 |
// Enable by default |
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boolean bmhEnabled = true; |
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boolean dmhEnabled = true; |
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if (mainArgument != null) { |
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List<String> args = Arrays.asList(mainArgument.split(",")); |
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if (!args.contains(BMH_PARAM)) { |
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bmhEnabled = false; |
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158 |
} |
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if (!args.contains(DMH_PARAM)) { |
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dmhEnabled = false; |
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161 |
} |
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162 |
} |
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163 |
|
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164 |
if (!bmhEnabled) { |
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165 |
speciesTypes = List.of(); |
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166 |
} else { |
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String args = config.get(BMH_SPECIES_PARAM); |
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List<String> bmhSpecies; |
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if (args != null && !args.isEmpty()) { |
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bmhSpecies = Arrays.stream(args.split(",")) |
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.map(String::trim) |
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.filter(s -> !s.isEmpty()) |
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.collect(Collectors.toList()); |
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174 |
} else { |
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bmhSpecies = defaultSpecies(); |
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176 |
} |
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177 |
|
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178 |
// Expand BMH species signatures |
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speciesTypes = bmhSpecies.stream() |
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.map(type -> expandSignature(type)) |
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181 |
.collect(Collectors.toList()); |
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182 |
} |
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183 |
|
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184 |
// DirectMethodHandles |
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185 |
if (!dmhEnabled) { |
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186 |
dmhMethods = Map.of(); |
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187 |
} else { |
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188 |
dmhMethods = new HashMap<>(); |
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189 |
for (String dmhParam : DMH_METHOD_TYPE_MAP.keySet()) { |
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190 |
String args = config.get(dmhParam); |
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191 |
if (args != null && !args.isEmpty()) { |
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192 |
List<String> dmhMethodTypes = Arrays.stream(args.split(",")) |
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193 |
.map(String::trim) |
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194 |
.filter(s -> !s.isEmpty()) |
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195 |
.collect(Collectors.toList()); |
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196 |
dmhMethods.put(dmhParam, dmhMethodTypes); |
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197 |
// Validation check |
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198 |
for (String type : dmhMethodTypes) { |
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199 |
String[] typeParts = type.split("_"); |
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200 |
// check return type (second part) |
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201 |
if (typeParts.length != 2 || typeParts[1].length() != 1 |
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202 |
|| "LJIFDV".indexOf(typeParts[1].charAt(0)) == -1) { |
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203 |
throw new PluginException( |
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204 |
"Method type signature must be of form [LJIFD]*_[LJIFDV]"); |
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205 |
} |
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206 |
// expand and check arguments (first part) |
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207 |
expandSignature(typeParts[0]); |
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208 |
} |
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209 |
} |
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210 |
} |
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211 |
if (dmhMethods.isEmpty()) { |
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212 |
dmhMethods = defaultDMHMethods(); |
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213 |
} |
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214 |
} |
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215 |
} |
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216 |
|
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217 |
private static void requireBasicType(char c) { |
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218 |
if ("LIJFD".indexOf(c) < 0) { |
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219 |
throw new PluginException( |
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220 |
"Character " + c + " must correspond to a basic field type: LIJFD"); |
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221 |
} |
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222 |
} |
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223 |
|
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224 |
@Override |
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225 |
public ResourcePool transform(ResourcePool in, ResourcePoolBuilder out) { |
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226 |
// Copy all but DMH_ENTRY to out |
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227 |
in.transformAndCopy(entry -> { |
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228 |
// filter out placeholder entries |
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229 |
if (entry.path().equals(DIRECT_METHOD_HANDLE_ENTRY) || |
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entry.path().equals(DELEGATING_METHOD_HANDLE_ENTRY)) { |
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231 |
return null; |
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232 |
} else { |
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233 |
return entry; |
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234 |
} |
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235 |
}, out); |
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236 |
speciesTypes.forEach(types -> generateBMHClass(types, out)); |
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237 |
generateDMHClass(out); |
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238 |
return out.build(); |
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239 |
} |
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240 |
|
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241 |
@SuppressWarnings("unchecked") |
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242 |
private void generateBMHClass(String types, ResourcePoolBuilder out) { |
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243 |
try { |
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244 |
// Generate class |
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Map.Entry<String, byte[]> result = |
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246 |
JLIA.generateConcreteBMHClassBytes(types); |
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247 |
String className = result.getKey(); |
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248 |
byte[] bytes = result.getValue(); |
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|
249 |
|
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250 |
// Add class to pool |
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251 |
ResourcePoolEntry ndata = ResourcePoolEntry.create( |
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252 |
"/java.base/" + className + ".class", |
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253 |
bytes); |
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out.add(ndata); |
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|
255 |
} catch (Exception ex) { |
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|
256 |
throw new PluginException(ex); |
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|
257 |
} |
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|
258 |
} |
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|
259 |
|
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260 |
private void generateDMHClass(ResourcePoolBuilder out) { |
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261 |
int count = 0; |
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262 |
for (List<String> entry : dmhMethods.values()) { |
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263 |
count += entry.size(); |
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|
264 |
} |
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|
265 |
MethodType[] methodTypes = new MethodType[count]; |
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266 |
int[] dmhTypes = new int[count]; |
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267 |
int index = 0; |
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268 |
for (Map.Entry<String, List<String>> entry : dmhMethods.entrySet()) { |
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269 |
String dmhType = entry.getKey(); |
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270 |
for (String type : entry.getValue()) { |
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271 |
methodTypes[index] = asMethodType(type); |
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272 |
dmhTypes[index] = DMH_METHOD_TYPE_MAP.get(dmhType); |
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|
273 |
index++; |
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|
274 |
} |
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275 |
} |
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|
276 |
try { |
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277 |
byte[] bytes = JLIA.generateDirectMethodHandleHolderClassBytes( |
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278 |
DIRECT_METHOD_HANDLE, methodTypes, dmhTypes); |
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|
279 |
ResourcePoolEntry ndata = ResourcePoolEntry |
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280 |
.create(DIRECT_METHOD_HANDLE_ENTRY, bytes); |
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281 |
out.add(ndata); |
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|
282 |
|
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|
283 |
bytes = JLIA.generateDelegatingMethodHandleHolderClassBytes( |
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|
284 |
DELEGATING_METHOD_HANDLE, methodTypes); |
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|
285 |
ndata = ResourcePoolEntry.create(DELEGATING_METHOD_HANDLE_ENTRY, bytes); |
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286 |
out.add(ndata); |
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|
287 |
} catch (Exception ex) { |
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|
288 |
throw new PluginException(ex); |
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|
289 |
} |
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|
290 |
} |
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|
291 |
private static final String DIRECT_METHOD_HANDLE_ENTRY = |
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292 |
"/java.base/" + DIRECT_METHOD_HANDLE + ".class"; |
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|
293 |
private static final String DELEGATING_METHOD_HANDLE_ENTRY = |
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294 |
"/java.base/" + DELEGATING_METHOD_HANDLE + ".class"; |
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|
295 |
|
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296 |
// Convert LL -> LL, L3 -> LLL |
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297 |
private static String expandSignature(String signature) { |
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|
298 |
StringBuilder sb = new StringBuilder(); |
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|
299 |
char last = 'X'; |
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|
300 |
int count = 0; |
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|
301 |
for (int i = 0; i < signature.length(); i++) { |
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|
302 |
char c = signature.charAt(i); |
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|
303 |
if (c >= '0' && c <= '9') { |
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|
304 |
count *= 10; |
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|
305 |
count += (c - '0'); |
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|
306 |
} else { |
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|
307 |
requireBasicType(c); |
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|
308 |
for (int j = 1; j < count; j++) { |
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|
309 |
sb.append(last); |
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|
310 |
} |
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|
311 |
sb.append(c); |
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|
312 |
last = c; |
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|
313 |
count = 0; |
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|
314 |
} |
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|
315 |
} |
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|
316 |
|
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|
317 |
// ended with a number, e.g., "L2": append last char count - 1 times |
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|
318 |
if (count > 1) { |
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|
319 |
requireBasicType(last); |
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|
320 |
for (int j = 1; j < count; j++) { |
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|
321 |
sb.append(last); |
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|
322 |
} |
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|
323 |
} |
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|
324 |
return sb.toString(); |
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|
325 |
} |
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|
326 |
|
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|
327 |
private static MethodType asMethodType(String basicSignatureString) { |
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|
328 |
String[] parts = basicSignatureString.split("_"); |
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|
329 |
assert(parts.length == 2); |
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|
330 |
assert(parts[1].length() == 1); |
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|
331 |
String parameters = expandSignature(parts[0]); |
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|
332 |
Class<?> rtype = simpleType(parts[1].charAt(0)); |
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|
333 |
if (parameters.isEmpty()) { |
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|
334 |
return MethodType.methodType(rtype); |
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|
335 |
} else { |
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|
336 |
Class<?>[] ptypes = new Class<?>[parameters.length()]; |
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|
337 |
for (int i = 0; i < ptypes.length; i++) { |
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|
338 |
ptypes[i] = simpleType(parameters.charAt(i)); |
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|
339 |
} |
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|
340 |
return MethodType.methodType(rtype, ptypes); |
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|
341 |
} |
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|
342 |
} |
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|
343 |
|
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|
344 |
private static Class<?> simpleType(char c) { |
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|
345 |
switch (c) { |
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|
346 |
case 'F': |
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|
347 |
return float.class; |
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|
348 |
case 'D': |
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|
349 |
return double.class; |
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|
350 |
case 'I': |
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|
351 |
return int.class; |
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|
352 |
case 'L': |
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|
353 |
return Object.class; |
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|
354 |
case 'J': |
8b78c9b31244
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|
355 |
return long.class; |
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|
356 |
case 'V': |
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|
357 |
return void.class; |
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|
358 |
case 'Z': |
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|
359 |
case 'B': |
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|
360 |
case 'S': |
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|
361 |
case 'C': |
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|
362 |
throw new IllegalArgumentException("Not a valid primitive: " + c + |
8b78c9b31244
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|
363 |
" (use I instead)"); |
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|
364 |
default: |
8b78c9b31244
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|
365 |
throw new IllegalArgumentException("Not a primitive: " + c); |
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changeset
|
366 |
} |
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|
367 |
} |
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|
368 |
} |