Re: [YANG] legal uses-stmt?

Martin Bjorklund wrote:
> Andy Bierman <ietf@andybierman.com> wrote:
>> Hi,
>>
>> Is this legal?
>>
>>    grouping A {
>>      leaf x { type string; }
>>    }
>>
>>    container foo {
>>      uses A {
>>        leaf x { description "blah"; }
>>        leaf x { default "blah-blah"; }
>>      }
>>    }
>>
>>
>> Or is each leaf from 'grouping A' allowed to be specified 0 or 1 time
>> within the 'uses A' statement? 
> 
> Yes, that was the idea.

good -- then it works the same as the rules for container or list

> 
>> The ABNF allows the above,
> 
> The ABNF cannot make these kind of restrictions, since the identifier
> is dynamic.
> 
>> and sec 7.11.2 doesn't say (although there is a CLR about the
>> clauses being in the same order as in the grouping).
> 
> I'll update 7.11.2
> 

What about removing the CLR about the clauses in the 'uses' must
match the exact order of clauses in the grouping?   One of the
things that makes YANG user-friendly (and a pain to implement ;-)
is that forward references are allowed, and most sub-statements
can appear in any order.  Statement order is only forced when
it really matters, like imports before the body statements.

> 
> /martin
> 
> 

Andy

_______________________________________________
YANG mailing list
YANG@ietf.org
https://www1.ietf.org/mailman/listinfo/yang