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A headless browser intended for use in testing web-based applications.

There is a newer version: 2.70.0

/*
 * Copyright (c) 2002-2018 Gargoyle Software Inc.
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gargoylesoftware.htmlunit.javascript.host;

import java.util.ArrayList;
import java.util.List;

import net.sourceforge.htmlunit.corejs.javascript.Context;
import net.sourceforge.htmlunit.corejs.javascript.Function;
import net.sourceforge.htmlunit.corejs.javascript.Scriptable;
import net.sourceforge.htmlunit.corejs.javascript.Undefined;

/**
 * Contains some missing features of Rhino NativeArray.
 *
 * @author Ahmed Ashour
 * @author Ronald Brill
 */
public final class ArrayCustom {

    private ArrayCustom() { }

    /**
     * Creates a new Array instance from an array-like or iterable object.
     * @param context the JavaScript context
     * @param thisObj the scriptable
     * @param args the arguments passed into the method
     * @param function the function
     * @return converted string
     */
    public static Scriptable from(
            final Context context, final Scriptable thisObj, final Object[] args, final Function function) {
        final Object arrayLike = args[0];
        Object[] array = null;
        if (arrayLike instanceof Scriptable) {
            final Scriptable scriptable = (Scriptable) arrayLike;
            final Object length = scriptable.get("length", scriptable);
            if (length != Scriptable.NOT_FOUND) {
                final int size = (int) Context.toNumber(length);
                array = new Object[size];
                for (int i = 0; i < size; i++) {
                    array[i] = scriptable.get(i, scriptable);
                }
            }
            else {
                final List