/* -*- 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 code, released * May 6, 1999. * * The Initial Developer of the Original Code is Netscape * Communications Corporation.  Portions created by Netscape are * Copyright (C) 1997-1999 Netscape Communications Corporation. 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 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. */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 NativeJavaPackage extends ScriptableObject{    static final long serialVersionUID = 7445054382212031523L;    NativeJavaPackage(boolean internalUsage,                      String packageName, ClassLoader classLoader)    {        this.packageName = packageName;        this.classLoader = classLoader;    }    /**     * @deprecated NativeJavaPackage is an internal class, do not use     * it directly.     */    public NativeJavaPackage(String packageName, ClassLoader classLoader) {        this(false, packageName, classLoader);    }    /**     * @deprecated NativeJavaPackage is an internal class, do not use     * it directly.     */    public NativeJavaPackage(String packageName) {        this(false, packageName,             Context.getCurrentContext().getApplicationClassLoader());    }    public String getClassName() {        return "JavaPackage";    }    public boolean has(String id, Scriptable start) {        return true;    }    public boolean has(int index, Scriptable start) {        return false;    }    public void put(String id, Scriptable start, Object value) {        // Can't add properties to Java packages.  Sorry.    }    public void put(int index, Scriptable start, Object value) {        throw Context.reportRuntimeError0("msg.pkg.int");    }    public Object get(String id, Scriptable start) {        return getPkgProperty(id, start, true);    }    public Object get(int index, Scriptable start) {        return NOT_FOUND;    }    // set up a name which is known to be a package so we don't    // need to look for a class by that name    void forcePackage(String name, Scriptable scope)    {        NativeJavaPackage pkg;        int end = name.indexOf('.');        if (end == -1) {            end = name.length();        }        String id = name.substring(0, end);        Object cached = super.get(id, this);        if (cached != null && cached instanceof NativeJavaPackage) {            pkg = (NativeJavaPackage) cached;        } else {            String newPackage = packageName.length() == 0                                ? id                                : packageName + "." + id;            pkg = new NativeJavaPackage(true, newPackage, classLoader);            ScriptRuntime.setObjectProtoAndParent(pkg, scope);            super.put(id, this, pkg);        }        if (end < name.length()) {            pkg.forcePackage(name.substring(end+1), scope);        }    }    synchronized Object getPkgProperty(String name, Scriptable start,                                       boolean createPkg)    {        Object cached = super.get(name, start);        if (cached != NOT_FOUND)            return cached;        String className = (packageName.length() == 0)                               ? name : packageName + '.' + name;        Context cx = Context.getContext();        ClassShutter shutter = cx.getClassShutter();        Scriptable newValue = null;        if (shutter == null || shutter.visibleToScripts(className)) {            Class cl = null;            if (classLoader != null) {                cl = Kit.classOrNull(classLoader, className);            } else {                cl = Kit.classOrNull(className);            }            if (cl != null) {                newValue = new NativeJavaClass(getTopLevelScope(this), cl);                newValue.setPrototype(getPrototype());            }        }        if (newValue == null && createPkg) {            NativeJavaPackage pkg;            pkg = new NativeJavaPackage(true, className, classLoader);            ScriptRuntime.setObjectProtoAndParent(pkg, getParentScope());            newValue = pkg;        }        if (newValue != null) {            // Make it available for fast lookup and sharing of            // lazily-reflected constructors and static members.            super.put(name, start, newValue);        }        return newValue;    }    public Object getDefaultValue(Class ignored) {        return toString();    }    public String toString() {        return "[JavaPackage " + packageName + "]";    }    private String packageName;    private ClassLoader classLoader;}