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+/* -*- 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 code, released
+ * May 6, 1999.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1997-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * Norris Boyd
+ * Frank Mitchell
+ * Mike Shaver
+ *
+ * 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 ***** */
+
+package org.mozilla.javascript;
+
+/**
+ * This class reflects Java packages into the JavaScript environment. We
+ * lazily reflect classes and subpackages, and use a caching/sharing
+ * system to ensure that members reflected into one JavaPackage appear
+ * in all other references to the same package (as with Packages.java.lang
+ * and java.lang).
+ *
+ * @author Mike Shaver
+ * @see NativeJavaArray
+ * @see NativeJavaObject
+ * @see NativeJavaClass
+ */
+
+public class NativeJavaTopPackage
+ extends NativeJavaPackage implements Function, IdFunctionCall
+{
+ static final long serialVersionUID = -1455787259477709999L;
+
+ // we know these are packages so we can skip the class check
+ // note that this is ok even if the package isn't present.
+ private static final String commonPackages = ""
+ +"java.lang;"
+ +"java.lang.reflect;"
+ +"java.io;"
+ +"java.math;"
+ +"java.net;"
+ +"java.util;"
+ +"java.util.zip;"
+ +"java.text;"
+ +"java.text.resources;"
+ +"java.applet;"
+ +"javax.swing;"
+ ;
+
+ NativeJavaTopPackage(ClassLoader loader)
+ {
+ super(true, "", loader);
+ }
+
+ public Object call(Context cx, Scriptable scope, Scriptable thisObj,
+ Object[] args)
+ {
+ return construct(cx, scope, args);
+ }
+
+ public Scriptable construct(Context cx, Scriptable scope, Object[] args)
+ {
+ ClassLoader loader = null;
+ if (args.length != 0) {
+ Object arg = args[0];
+ if (arg instanceof Wrapper) {
+ arg = ((Wrapper)arg).unwrap();
+ }
+ if (arg instanceof ClassLoader) {
+ loader = (ClassLoader)arg;
+ }
+ }
+ if (loader == null) {
+ Context.reportRuntimeError0("msg.not.classloader");
+ return null;
+ }
+ return new NativeJavaPackage(true, "", loader);
+ }
+
+ public static void init(Context cx, Scriptable scope, boolean sealed)
+ {
+ ClassLoader loader = cx.getApplicationClassLoader();
+ final NativeJavaTopPackage top = new NativeJavaTopPackage(loader);
+ top.setPrototype(getObjectPrototype(scope));
+ top.setParentScope(scope);
+
+ String[] names = Kit.semicolonSplit(commonPackages);
+ for (int i = 0; i != names.length; ++i) {
+ top.forcePackage(names[i], scope);
+ }
+
+ // getClass implementation
+ IdFunctionObject getClass = new IdFunctionObject(top, FTAG, Id_getClass,
+ "getClass", 1, scope);
+
+ // We want to get a real alias, and not a distinct JavaPackage
+ // with the same packageName, so that we share classes and top
+ // that are underneath.
+ String[] topNames = { "java", "javax", "org", "com", "edu", "net" };
+ NativeJavaPackage[] topPackages = new NativeJavaPackage[topNames.length];
+ for (int i=0; i < topNames.length; i++) {
+ topPackages[i] = (NativeJavaPackage)top.get(topNames[i], top);
+ }
+
+ // It's safe to downcast here since initStandardObjects takes
+ // a ScriptableObject.
+ ScriptableObject global = (ScriptableObject) scope;
+
+ if (sealed) {
+ getClass.sealObject();
+ }
+ getClass.exportAsScopeProperty();
+ global.defineProperty("Packages", top, ScriptableObject.DONTENUM);
+ for (int i=0; i < topNames.length; i++) {
+ global.defineProperty(topNames[i], topPackages[i],
+ ScriptableObject.DONTENUM);
+ }
+ }
+
+ public Object execIdCall(IdFunctionObject f, Context cx, Scriptable scope,
+ Scriptable thisObj, Object[] args)
+ {
+ if (f.hasTag(FTAG)) {
+ if (f.methodId() == Id_getClass) {
+ return js_getClass(cx, scope, args);
+ }
+ }
+ throw f.unknown();
+ }
+
+ private Scriptable js_getClass(Context cx, Scriptable scope, Object[] args)
+ {
+ if (args.length > 0 && args[0] instanceof Wrapper) {
+ Scriptable result = this;
+ Class cl = ((Wrapper) args[0]).unwrap().getClass();
+ // Evaluate the class name by getting successive properties of
+ // the string to find the appropriate NativeJavaClass object
+ String name = cl.getName();
+ int offset = 0;
+ for (;;) {
+ int index = name.indexOf('.', offset);
+ String propName = index == -1
+ ? name.substring(offset)
+ : name.substring(offset, index);
+ Object prop = result.get(propName, result);
+ if (!(prop instanceof Scriptable))
+ break; // fall through to error
+ result = (Scriptable) prop;
+ if (index == -1)
+ return result;
+ offset = index+1;
+ }
+ }
+ throw Context.reportRuntimeError0("msg.not.java.obj");
+ }
+
+ private static final Object FTAG = new Object();
+ private static final int Id_getClass = 1;
+}
+