/// <summary>
/// This extension uses the DuckTyper to transform an object into a given interface or type.
/// </summary>
/// <typeparam name="TInterface"></typeparam>
/// <param name="instance"></param>
/// <returns></returns>
public static TInterface As <TInterface>(this object instance)
{
if (typeof(TInterface).IsDelegate())
{
// find a function in this object that matches the delegate that we are given
// and return that instead.
if (instance.GetType().IsDelegate())
{
if (typeof(TInterface).IsDelegateAssignableFromDelegate(instance.GetType()))
{
return(((Delegate)instance).CreateProxiedDelegate <TInterface>());
}
throw new Exception("Delegate '{0}' can not be created from Delegate '{1}'.".format(typeof(TInterface).NiceName(), instance.GetType().NiceName()));
}
var instanceSupportsMethod = GenerateInstanceSupportsMethod(instance);
var instanceType = instance.GetType();
var instanceMethods = instanceType.GetPublicMethods();
var instanceFields = instanceType.GetPublicDelegateFields();
var instanceProperties = instanceType.GetPublicDelegateProperties();
if (!instanceSupportsMethod(typeof(TInterface).Name))
{
throw new Exception("Generation of Delegate '{0}' not supported from object.".format(typeof(TInterface).NiceName()));
}
var method = instanceMethods.FindMethod(typeof(TInterface));
if (method != null)
{
return(instance.CreateProxiedDelegate <TInterface>(method));
}
var instanceDelegate = instanceFields.FindDelegate(instance, typeof(TInterface)) ?? instanceProperties.FindDelegate(instance, typeof(TInterface));
if (instanceDelegate != null)
{
if (instanceDelegate is TInterface)
{
return((TInterface)(object)instanceDelegate);
}
return(instanceDelegate.CreateProxiedDelegate <TInterface>());
}
return((TInterface)(object)typeof(TInterface).CreateEmptyDelegate());
// throw new Exception("Delegate '{0}' not matched in object.".format(typeof (TInterface).NiceName()));
}
return(DynamicInterface.DynamicCast <TInterface>(instance));
}
public static TInterface Extend <TInterface>(this object obj, params object[] objects)
{
return(DynamicInterface.DynamicCast <TInterface>(objects, obj));
}