Synnefo » Pithos MS Client

using System;

using Hammock.Specifications;

namespace Hammock.Extensions

{

    internal static class SpecificationExtensions

    {

        public static bool Satisfies<T>(this object instance) where T : ISpecification

        {

            var marker = Activator.CreateInstance<T>();

            var type = typeof (ISpecification<>).MakeGenericType(instance.GetType());

            var match = marker.Implements(type);

            if (!match)

            {

                return false;

            }

            var method = type.GetMethod("IsSatisfiedBy");

            var result = method.Invoke(marker, new[] {instance});

            return (bool) result;

        }

        public static bool Satisfies(this object instance, ISpecification specificationType)

        {

            var type = typeof (ISpecification<>).MakeGenericType(instance.GetType());

            var match = specificationType.Implements(type);

            if (!match)

            {

                return false;

            }

            var method = type.GetMethod("IsSatisfiedBy");

            var result = method.Invoke(specificationType, new[] {instance});

            return (bool) result;

        }

    }

}