Objects.cs

/* 
 * QR code generator library (.NET)
 *
 * Copyright (c) Manuel Bleichenbacher (MIT License)
 * https://github.com/manuelbl/QrCodeGenerator
 * Copyright (c) Project Nayuki (MIT License)
 * https://www.nayuki.io/page/qr-code-generator-library
 * Copyright (c) ArdeshirV@protonmail.com (MIT License)
 * https://ardeshirv.github.io/ArdeshirV.Utility.QrCode/
 * Downgrade to C# 2.0 by ArdeshirV
 * 
 * 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.
 */

using System;

namespace ArdeshirV.Tools.QrCode
{
    /// <summary>
    /// Helper functions to check for valid arguments.
    /// </summary>
    internal class Objects
    {
        /// <summary>
        /// Ensures that the specified argument is <i>not null</i>.
        /// <para>
        /// Throws a <see cref="ArgumentNullException"/> exception if the argument is <c>null</c>.
        /// </para>
        /// </summary>
        /// <typeparam name="T">The type of the argument.</typeparam>
        /// <param name="arg">The argument to check.</param>
        /// <returns>Argument passed to function.</returns>
        /// <exception cref="ArgumentNullException">The specified argument is <c>null</c>.</exception>
        internal static T RequireNonNull<T>(T arg)
        {
            if (arg == null)
            {
                throw new ArgumentNullException();
            }
            return arg;
        }
    }
}