using System;

namespace Pinwheel
{
    public abstract class AwardRule<T> : IAwardRule where T : AwardContext
    {
        public void Execute(AwardContext context)
        {
            if (context == null) throw new ArgumentNullException("context");

            var buildContext = context as T;
            if (buildContext != null)
                Execute(buildContext);
        }

        protected abstract void Execute(T context);
    }
}