1 files changed, 47 insertions, 0 deletions
diff --git a/src/jdk/nashorn/internal/runtime/AstDeserializer.java b/src/jdk/nashorn/internal/runtime/AstDeserializer.java
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+++ b/src/jdk/nashorn/internal/runtime/AstDeserializer.java
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+/*
+ * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.nashorn.internal.runtime;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.util.zip.InflaterInputStream;
+import jdk.nashorn.internal.ir.FunctionNode;
+
+/**
+ * This static utility class performs deserialization of FunctionNode ASTs from a byte array.
+ * The format is a standard Java serialization stream, deflated.
+ */
+final class AstDeserializer {
+    static FunctionNode deserialize(final byte[] serializedAst) {
+        try {
+            return (FunctionNode)new ObjectInputStream(new InflaterInputStream(new ByteArrayInputStream(
+                    serializedAst))).readObject();
+        } catch (final ClassNotFoundException | IOException e) {
+            // This is internal, can't happen
+            throw new AssertionError("Unexpected exception deserializing function", e);
+        }
+    }
+}