diff options
Diffstat (limited to 'infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java')
-rw-r--r-- | infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java new file mode 100644 index 0000000..476ff69 --- /dev/null +++ b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/serialize/ScriptableInputStream.java @@ -0,0 +1,112 @@ +/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * + * ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0 + * + * The contents of this file are subject to the Mozilla 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/MPL/ + * + * 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. + * Portions created by the Initial Developer are Copyright (C) 2001 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Norris Boyd + * Igor Bukanov + * Attila Szegedi + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License Version 2 or later (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 + * MPL, indicate your decision by deleting the provisions above and replacing + * 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 MPL or the GPL. + * + * ***** END LICENSE BLOCK ***** */ + +// API class + +package 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; +} |