I did a little googling, but didn't find this specific question being asked.
I've had the question in my head for a while now, so I apologize if I already
brought this up.
Will Swift ever support introspectable Java-style annotations? I think the
current syntactic construct is called an Attribute, but they'd be customizable,
created in much the same way as classes are.
They provide a very convenient way to provide plug-ins to a containing
environment. For example, web servers are often built in Java using these
techniques. You define a (plain) class that represents a service, whose methods
represent individual request endpoints:
@Service(root="/my/sub/webapp/")
class
MyWebapp
{
@Get(path="users/{id}/")
func getUsers(@Param("id") userID inUserID: Int)
-> [String:AnyObject]?
{
// return dictionary for user with ID inUserID
}
}
The container uses introspection to find all classes annotated with "Service."
It pulls the values of the parameters out of the Service annotation using
introspection. It then does a similar thing on the methods in the Service
class, etc.
Is there any work being done along these lines?
--
Rick Mann
[email protected]
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