Rhino JavaScript Java Library is an open-source implementation of JavaScript written entirely in Java.

Rhino JavaScript Java Library Source Code files are provided in binary package (rhino-1.7.14.zip).

You can also browse the source code below:

⏎ org/mozilla/javascript/regexp/SubString.java

/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.javascript.regexp;

/**
 * A utility class for lazily instantiated substrings.
 */
public class SubString {

    public SubString()
    {
    }

    public SubString(String str)
    {
        this.str = str;
        index = 0;
        length = str.length();
    }

    public SubString(String source, int start, int len)
    {
        str = source;
        index = start;
        length = len;
    }

    @Override
    public String toString() {
        return str == null
               ? ""
               : str.substring(index, index + length);
    }

    String str;
    int    index;
    int    length;
}

⏎ org/mozilla/javascript/regexp/SubString.java

Or download all of them as a single archive file:

File name: rhino-1.7.14-sources.jar
File size: 1029165 bytes
Release date: 2022-01-06
Download 

⇒ Example code to Test rhino-runtime-1.7.14.jar

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