Re: [YANG] Choice and uses statement

Li Yan <liyan_77@huawei.com> wrote:
> Hi,
> 
> Why the "uses" statement is not able to reference the "choice" definition?
> If it can, the "choice" definition would be allowed to be reused.

uses always references a named grouping.  The grouping can contain a
choice, so you can do:

   grouping protocol-type {
     choice proto {
       case tcp { ... }
       case udp { ... }
     }
   }

And then:

   uses protocol-type;

> I noticed that the "choice" statement can be contained immediately in the
> "module" and "submodule" statement. I wonder how to make use of this
> "choice" definition?

'choice' is one of the "data-definition statements" in YANG.  All
data-definitions are allowed at the top-level.  We didn't really see a
reason to restrict these usages.

/martin

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