AnonymousDisposable.cs

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// Copyright (c) 2014 Silicon Studio Corp. (http://siliconstudio.co.jp)
// This file is distributed under GPL v3. See LICENSE.md for details.
using System;

namespace SiliconStudio.Core
{
    /// <summary>
    /// This class allows implementation of <see cref="IDisposable"/> using anonymous functions.
    /// The anonymous function will be invoked only on the first call to the <see cref="Dispose"/> method.
    /// </summary>
    public class AnonymousDisposable : IDisposable
    {
        private bool isDisposed;
        private Action onDispose;

        /// <summary>
        /// Initializes a new instance of the <see cref="AnonymousDisposable"/> class.
        /// </summary>
        /// <param name="onDispose">The anonymous function to invoke when this object is disposed.</param>
        public AnonymousDisposable(Action onDispose)
        {
            if (onDispose == null)
                throw new ArgumentNullException("onDispose");

            this.onDispose = onDispose;
        }

        /// <inheritdoc/>
        public void Dispose()
        {
            if (isDisposed)
                return;

            isDisposed = true;

            onDispose();
            onDispose = null;
        }
    }
}