/* -*- 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
* Igor Bukanov
* Frank Mitchell
* Mike Shaver
* Kemal Bayram
*
* 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;
import java.lang.reflect.Array;
/**
* This class reflects Java arrays into the JavaScript environment.
*
* @author Mike Shaver
* @see NativeJavaClass
* @see NativeJavaObject
* @see NativeJavaPackage
*/
public class NativeJavaArray extends NativeJavaObject
{
static final long serialVersionUID = -924022554283675333L;
public String getClassName() {
return "JavaArray";
}
public static NativeJavaArray wrap(Scriptable scope, Object array) {
return new NativeJavaArray(scope, array);
}
public Object unwrap() {
return array;
}
public NativeJavaArray(Scriptable scope, Object array) {
super(scope, null, ScriptRuntime.ObjectClass);
Class cl = array.getClass();
if (!cl.isArray()) {
throw new RuntimeException("Array expected");
}
this.array = array;
this.length = Array.getLength(array);
this.cls = cl.getComponentType();
}
public boolean has(String id, Scriptable start) {
return id.equals("length") || super.has(id, start);
}
public boolean has(int index, Scriptable start) {
return 0 <= index && index < length;
}
public Object get(String id, Scriptable start) {
if (id.equals("length"))
return new Integer(length);
Object result = super.get(id, start);
if (result == NOT_FOUND &&
!ScriptableObject.hasProperty(getPrototype(), id))
{
throw Context.reportRuntimeError2(
"msg.java.member.not.found", array.getClass().getName(), id);
}
return result;
}
public Object get(int index, Scriptable start) {
if (0 <= index && index < length) {
Context cx = Context.getContext();
Object obj = Array.get(array, index);
return cx.getWrapFactory().wrap(cx, this, obj, cls);
}
return Undefined.instance;
}
public void put(String id, Scriptable start, Object value) {
// Ignore assignments to "length"--it's readonly.
if (!id.equals("length"))
throw Context.reportRuntimeError1(
"msg.java.array.member.not.found", id);
}
public void put(int index, Scriptable start, Object value) {
if (0 <= index && index < length) {
Array.set(array, index, Context.jsToJava(value, cls));
}
else {
throw Context.reportRuntimeError2(
"msg.java.array.index.out.of.bounds", String.valueOf(index),
String.valueOf(length - 1));
}
}
public Object getDefaultValue(Class hint) {
if (hint == null || hint == ScriptRuntime.StringClass)
return array.toString();
if (hint == ScriptRuntime.BooleanClass)
return Boolean.TRUE;
if (hint == ScriptRuntime.NumberClass)
return ScriptRuntime.NaNobj;
return this;
}
public Object[] getIds() {
Object[] result = new Object[length];
int i = length;
while (--i >= 0)
result[i] = new Integer(i);
return result;
}
public boolean hasInstance(Scriptable value) {
if (!(value instanceof Wrapper))
return false;
Object instance = ((Wrapper)value).unwrap();
return cls.isInstance(instance);
}
public Scriptable getPrototype() {
if (prototype == null) {
prototype =
ScriptableObject.getClassPrototype(this.getParentScope(),
"Array");
}
return prototype;
}
Object array;
int length;
Class cls;
}
