Java Nashorn Javascript Library getArrayLength(NativeArray arr)

Description

get Array Length

License

Open Source License

Declaration

public static int getArrayLength(NativeArray arr) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * The MIT License (MIT)/*from   w w w. ja  v a 2s. c  o m*/
 * Copyright ? 2015 Inshua,inshua@gmail.com, All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the ?Software??), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED ?AS IS??, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *******************************************************************************/

import jdk.nashorn.internal.objects.NativeArray;

public class Main {
    public static int getArrayLength(NativeArray arr) {
        Object length = arr.getLength();
        if (length instanceof Long) {
            return ((Long) length).intValue();
        } else if (length instanceof Integer) {
            return (Integer) length;
        } else {
            return Integer.parseInt(length.toString());
        }
    }
}

Related

1. addToNativeObject(final Object object, final String key, final Object value)
2. decode(final Object self, final String string, final boolean component)
3. encode(final Object self, final String string, final boolean component)
4. error(final String string, final int index)
5. escape(Object value)
6. isArrayType(final Object value)
7. isDateType(final ScriptObjectMirror value)
8. isNashornScript(final String className)
9. isNativeObject(final Object value)