?? scriptableinputstream.java
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- * * The contents of this file are subject to the Netscape Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is Rhino serialization code, released * Sept. 25, 2001. * * The Initial Developer of the Original Code is Norris Boyd. * * Contributor(s): * Norris Boyd * Igor Bukanov * Attila Szegedi * * Alternatively, the contents of this file may be used under the * terms of the GNU Public License (the "GPL"), in which case the * provisions of the GPL are applicable instead of those above. * If you wish to allow use of your version of this file only * under the terms of the GPL and not to allow others to use your * version of this file under the NPL, indicate your decision by * deleting the provisions above and replace them with the notice * and other provisions required by the GPL. If you do not delete * the provisions above, a recipient may use your version of this * file under either the NPL or the GPL. */// API classpackage org.mozilla.javascript.serialize;import java.io.*;import org.mozilla.javascript.*;/** * Class ScriptableInputStream is used to read in a JavaScript * object or function previously serialized with a ScriptableOutputStream. * References to names in the exclusion list * replaced with references to the top-level scope specified during * creation of the ScriptableInputStream. * * @author Norris Boyd */public class ScriptableInputStream extends ObjectInputStream { /** * Create a ScriptableInputStream. * @param in the InputStream to read from. * @param scope the top-level scope to create the object in. */ public ScriptableInputStream(InputStream in, Scriptable scope) throws IOException { super(in); this.scope = scope; enableResolveObject(true); Context cx = Context.getCurrentContext(); if (cx != null) { this.classLoader = cx.getApplicationClassLoader(); } } protected Class resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException { String name = desc.getName(); if (classLoader != null) { try { return classLoader.loadClass(name); } catch (ClassNotFoundException ex) { // fall through to default loading } } return super.resolveClass(desc); } protected Object resolveObject(Object obj) throws IOException { if (obj instanceof ScriptableOutputStream.PendingLookup) { String name = ((ScriptableOutputStream.PendingLookup)obj).getName(); obj = ScriptableOutputStream.lookupQualifiedName(scope, name); if (obj == Scriptable.NOT_FOUND) { throw new IOException("Object " + name + " not found upon " + "deserialization."); } }else if (obj instanceof UniqueTag) { obj = ((UniqueTag)obj).readResolve(); }else if (obj instanceof Undefined) { obj = ((Undefined)obj).readResolve(); } return obj; } private Scriptable scope; private ClassLoader classLoader;}
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