code.grnet.gr Git - pithos-ms-client/blob - trunk/hammock/src/net35/Hammock/Extensions/SpecificationExtensions.cs

   1 using System;
   2 using Hammock.Specifications;
   3
   4 namespace Hammock.Extensions
   5 {
   6     internal static class SpecificationExtensions
   7     {
   8         public static bool Satisfies<T>(this object instance) where T : ISpecification
   9         {
  10             var marker = Activator.CreateInstance<T>();
  11             var type = typeof (ISpecification<>).MakeGenericType(instance.GetType());
  12             var match = marker.Implements(type);
  13
  14             if (!match)
  15             {
  16                 return false;
  17             }
  18
  19             var method = type.GetMethod("IsSatisfiedBy");
  20             var result = method.Invoke(marker, new[] {instance});
  21
  22             return (bool) result;
  23         }
  24
  25         public static bool Satisfies(this object instance, ISpecification specificationType)
  26         {
  27             var type = typeof (ISpecification<>).MakeGenericType(instance.GetType());
  28             var match = specificationType.Implements(type);
  29
  30             if (!match)
  31             {
  32                 return false;
  33             }
  34
  35             var method = type.GetMethod("IsSatisfiedBy");
  36             var result = method.Invoke(specificationType, new[] {instance});
  37
  38             return (bool) result;
  39         }
  40     }
  41 }