valuetypewrapper!1.cs

来自「破解的飞信源代码」· CS 代码 · 共 38 行

namespace NCindy.Util
{
    using System;

    public sealed class ValueTypeWrapper<T>
    {
        public static readonly ValueTypeWrapper<T> Empty;
        private T valueTypeValue;

        static ValueTypeWrapper()
        {
            ValueTypeWrapper<T>.Empty = new ValueTypeWrapper<T>();
        }

        private ValueTypeWrapper()
        {
        }

        public ValueTypeWrapper(T valueTypeValue)
        {
            this.valueTypeValue = valueTypeValue;
        }

        public T Value
        {
            get
            {
                if (this == ValueTypeWrapper<T>.Empty)
                {
                    throw new InvalidOperationException("Empty has no value.");
                }
                return this.valueTypeValue;
            }
        }
    }
}