private static IEnumerable ProxyNonGenericIterator(object target, IEnumerable enumerable)
{
if (enumerable == null)
{
yield return(ProxyExtensions.NeverNullProxy(target.GetType()));
yield break;
}
foreach (var element in enumerable)
{
yield return(ProxyExtensions.NeverNull(element, target.GetType()));
}
}
public void Intercept(IInvocation invocation)
{
if (invocation.Method.DeclaringType == typeof(IUnBoxProxy))
{
invocation.ReturnValue = Source;
return;
}
var returnType = invocation.Method.ReturnType;
if (invocation.Method.ReturnType.IsSubclassOf(typeof(IEnumerable)))
{
HandleNonGenericIteratorInvocation(invocation);
}
else if (returnType.IsGenericType && returnType.GetGenericTypeDefinition() == typeof(IEnumerable <>))
{
HandleGenericIteratorInvocation(invocation, CastType.Default);
}
else if (IsGenericType(returnType, typeof(IList <>)))
{
HandleGenericIteratorInvocation(invocation, CastType.List);
}
else
{
invocation.Proceed();
var returnValue = Convert.ChangeType(invocation.ReturnValue, invocation.Method.ReturnType);
if (!PrimitiveTypes.Test(invocation.Method.ReturnType))
{
invocation.ReturnValue = returnValue == null
? ProxyExtensions.NeverNullProxy(invocation.Method.ReturnType)
: ProxyExtensions.NeverNull(returnValue,
invocation.Method.ReturnType);
}
}
}