ES4 Grammar

[Jeff Dyer]

> Thanks - that update seems like it has moved on in quite a few areas.

Yes, but it should be stabilizing somewhat now. The latest update tries to
bring the grammar in sync with the accepted proposals, which are now frozen.

Using PrimaryName as a NamespaceAttribute allows for the case you¹ve
identified ‹ package and namespace qualified namespace identifiers. E.g.:

    import flash.utils.*;

    flash.utils.flash_proxy function helper ( ) { ... }

Or the analog using namespaces:

     namespace Utils;
     Utils namespace Proxy;

     Utils::Proxy function helper () { ... }

In both cases the qualified name must resolve to a namespace value during
the definition phase (that is before verification or evaluation).

Jd

On 10/15/07 1:09 PM, Michael O'Brien wrote:

> Jeff, 
> 
> Thanks - that update seems like it has moved on in quite a few areas.
> 
> A follow on question: My question is what is the use case for a
> NamespaceAttribute being a PrimaryName. ie. Identifier "." Identifier ...
> 
> Given that Global NamespaceAttributes are defined to be:
>     public
>     internal
>     intrinsic
>     PrimaryName
> 
> This allows Paths in the namespace attribute. e.g. the following are legal
> where debug and release are suitably defined.
> 
> debug var x
> 
> a.b.c.release var x
> 
> My question is what is the use case for a NamespaceAttribute being a
> PrimaryName. ie. Identifier "." Identifier ...
> And how does one create such a "a.b.c.release"?
> 
> Are namespaces scoped to packages and thus the "a.b.c" refers to a package
> like "org.mozilla.release"?
> Or are these runtime namespaces where release is a property of "c" in the
> above example?
> 
> Or is the grammar incorrect?
> 
> Thanks
> 
> Michael
> 
> 
> 
> Jeff Dyer wrote: 
>>  
>> Hi Michael,
>> 
>> You might have an old cached copy of grammar.pdf. The first two issues were
>> resolved in a previous version. I had a pending fix to the third issue. I
>> made NamespaceAttribute a PrimaryName. That way you can use namespace
>> qualified references as a namespace attribute.
>> 
>> I've posted the latest and greatest, dated 14-oct-2007.
>> 
>> Thanks,
>> 
>> Jd
>> 
>> On 10/14/07 11:25 AM, Michael O'Brien wrote:
>> 
>>   
>>  
>>>  
>>> This is probably for Jeff, but I'll send to the list anyway.
>>> 
>>> I was doing a scrub through the latest posted grammar and may have a few
>>> small edits.
>>> 
>>> 
>>> 1. QualifiedNameIdentifier includes the tokens "*" and
>>> OverloadedOperator. However, overloaded operator includes "*" also. Is
>>> the "*' token
>>>     therefore multiply resolved?
>>> 
>>> 2. AttributeIdentifier in PrimaryExpression (production 110) should be
>>> AttributeName
>>> 
>>> 3. The production on 414 under NamespaceAttribute has:
>>> 
>>>     Path . Identifier
>>>     Identifier
>>> 
>>>     But Path already encompasses this. So you can replace these two
>>> lines with just "Path"
>>> 
>>>     Same in productions on lines 417+418
>>> 
>>> Let me know if I have any of this wrong.
>>> 
>>> 
>>> Cheers
>>> 
>>> 
>>> Michael O'Brien
>>> _______________________________________________
>>> Es4-discuss mailing list
>>> Es4-discuss at mozilla.org
>>> https://mail.mozilla.org/listinfo/es4-discuss
>>>     
>>>  
>>  
>> 
>> 
>>   
> 


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.mozilla.org/pipermail/es-discuss/attachments/20071015/2a066893/attachment-0002.html