author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 29133 | nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/AstDeserializer.java@1cd7d8af99ba |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010, 2014, 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.nashorn.internal.runtime; |
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import java.io.ByteArrayInputStream; |
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import java.io.IOException; |
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import java.io.ObjectInputStream; |
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import java.security.AccessController; |
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import java.security.PrivilegedAction; |
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import java.util.zip.InflaterInputStream; |
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import jdk.nashorn.internal.ir.FunctionNode; |
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/** |
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* This static utility class performs deserialization of FunctionNode ASTs from a byte array. |
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* The format is a standard Java serialization stream, deflated. |
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*/ |
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final class AstDeserializer { |
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static FunctionNode deserialize(final byte[] serializedAst) { |
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return AccessController.doPrivileged(new PrivilegedAction<FunctionNode>() { |
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@Override |
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public FunctionNode run() { |
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try { |
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return (FunctionNode)new ObjectInputStream(new InflaterInputStream( |
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new ByteArrayInputStream(serializedAst))).readObject(); |
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} catch (final ClassNotFoundException | IOException e) { |
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// This is internal, can't happen |
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throw new AssertionError("Unexpected exception deserializing function", e); |
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} |
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} |
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}); |
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} |
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} |