author | jlaskey |
Tue, 28 Jun 2016 16:07:23 -0300 | |
changeset 39308 | f6517755057f |
parent 39151 | 34455cc82f5e |
child 39321 | c60f34e8c057 |
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.reflect.Method; |
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import java.util.Arrays; |
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import java.util.EnumSet; |
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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.tools.jlink.plugin.ModuleEntry; |
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import jdk.tools.jlink.plugin.PluginException; |
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import jdk.tools.jlink.plugin.ModulePool; |
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import jdk.tools.jlink.plugin.TransformerPlugin; |
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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 TransformerPlugin { |
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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 DESCRIPTION = PluginsResourceBundle.getDescription(NAME); |
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private static final String BMH = "java/lang/invoke/BoundMethodHandle"; |
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private static final Method FACTORY_METHOD; |
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List<String> speciesTypes; |
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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 Java concatenating strings |
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* with -Djava.lang.invoke.stringConcat=MH_INLINE_SIZED_EXACT set |
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* plus a subset of octane. A better long-term solution is to define |
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* and run a set of quick generators and extracting this list as a |
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* 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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@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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// Enable by default |
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boolean bmhEnabled = true; |
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if (mainArgument != null) { |
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Set<String> args = Arrays.stream(mainArgument.split(",")) |
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.collect(Collectors.toSet()); |
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if (!args.contains(BMH_PARAM)) { |
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bmhEnabled = false; |
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} |
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} |
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if (!bmhEnabled) { |
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speciesTypes = List.of(); |
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} 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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} else { |
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bmhSpecies = defaultSpecies(); |
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} |
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// Expand BMH species signatures |
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speciesTypes = bmhSpecies.stream() |
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.map(type -> expandSignature(type)) |
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133 |
.collect(Collectors.toList()); |
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|
134 |
|
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135 |
// Validation check |
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136 |
for (String type : speciesTypes) { |
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137 |
for (char c : type.toCharArray()) { |
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138 |
if ("LIJFD".indexOf(c) < 0) { |
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139 |
throw new PluginException("All characters must " |
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140 |
+ "correspond to a basic field type: LIJFD"); |
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141 |
} |
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142 |
} |
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143 |
} |
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144 |
} |
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145 |
} |
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146 |
|
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147 |
@Override |
38320 | 148 |
public void visit(ModulePool in, ModulePool out) { |
149 |
in.entries().forEach(data -> { |
|
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150 |
if (("/java.base/" + BMH + ".class").equals(data.getPath())) { |
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151 |
// Add BoundMethodHandle unchanged |
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152 |
out.add(data); |
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153 |
speciesTypes.forEach(types -> generateConcreteClass(types, data, out)); |
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154 |
} else { |
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155 |
if (!out.contains(data)) { |
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156 |
out.add(data); |
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157 |
} |
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158 |
} |
38320 | 159 |
}); |
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160 |
} |
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|
161 |
|
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162 |
@SuppressWarnings("unchecked") |
38320 | 163 |
private void generateConcreteClass(String types, ModuleEntry data, ModulePool out) { |
36757
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164 |
try { |
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165 |
// Generate class |
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166 |
Map.Entry<String, byte[]> result = (Map.Entry<String, byte[]>) |
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167 |
FACTORY_METHOD.invoke(null, types); |
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168 |
String className = result.getKey(); |
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|
169 |
byte[] bytes = result.getValue(); |
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|
170 |
|
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171 |
// Add class to pool |
39151
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8147794: Jlink's ModuleEntry.stream can't be consumed more than once and ModuleEntry content should be read only if needed
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|
172 |
ModuleEntry ndata = ModuleEntry.create( |
36757
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173 |
"/java.base/" + className + ".class", |
39151
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|
174 |
bytes); |
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175 |
if (!out.contains(ndata)) { |
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176 |
out.add(ndata); |
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|
177 |
} |
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178 |
} catch (Exception ex) { |
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179 |
throw new PluginException(ex); |
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|
180 |
} |
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|
181 |
} |
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|
182 |
|
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|
183 |
static { |
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|
184 |
try { |
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185 |
Class<?> BMHFactory = Class.forName("java.lang.invoke.BoundMethodHandle$Factory"); |
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186 |
Method genClassMethod = BMHFactory.getDeclaredMethod("generateConcreteBMHClassBytes", |
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|
187 |
String.class); |
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188 |
genClassMethod.setAccessible(true); |
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189 |
FACTORY_METHOD = genClassMethod; |
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|
190 |
} catch (Exception e) { |
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|
191 |
throw new PluginException(e); |
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|
192 |
} |
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|
193 |
} |
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|
194 |
|
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|
195 |
// Convert LL -> LL, L3 -> LLL |
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196 |
private static String expandSignature(String signature) { |
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|
197 |
StringBuilder sb = new StringBuilder(); |
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|
198 |
char last = 'X'; |
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|
199 |
int count = 0; |
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|
200 |
for (int i = 0; i < signature.length(); i++) { |
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|
201 |
char c = signature.charAt(i); |
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|
202 |
if (c >= '0' && c <= '9') { |
c859c6feee56
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|
203 |
count *= 10; |
c859c6feee56
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|
204 |
count += (c - '0'); |
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|
205 |
} else { |
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|
206 |
for (int j = 1; j < count; j++) { |
c859c6feee56
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|
207 |
sb.append(last); |
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|
208 |
} |
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|
209 |
sb.append(c); |
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|
210 |
last = c; |
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|
211 |
count = 0; |
c859c6feee56
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|
212 |
} |
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|
213 |
} |
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|
214 |
for (int j = 1; j < count; j++) { |
c859c6feee56
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|
215 |
sb.append(last); |
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|
216 |
} |
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|
217 |
return sb.toString(); |
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|
218 |
} |
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219 |
} |