incubator-flex-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Gordon Smith <gosm...@adobe.com>
Subject RE: [jira] [Updated] (FLEX-51) Please check support for ExactValue initializer
Date Tue, 24 Apr 2012 22:41:28 GMT
> I'm pretty sure the binding code in the compiler knows about every token in the expression
as it knows what the change events are for each token.  

In {a.b.c} the compiler has to understand what a, b, and c resolve to, what [Bindable] metadata
there is on each one, etc. It uses the syntax tree and the symbol table to do this.

- Gordon

-----Original Message-----
From: Alex Harui [mailto:aharui@adobe.com] 
Sent: Tuesday, April 24, 2012 3:32 PM
To: flex-dev@incubator.apache.org
Subject: Re: [jira] [Updated] (FLEX-51) Please check support for ExactValue initializer




On 4/24/12 12:07 PM, "Justin Mclean" <justin@classsoftware.com> wrote:

> Hi,
> 
>> There is certainly an order today for children in a container, but I 
>> don't think it has been documented
> HBox and VBox and horizontal and vertical layouts probably wouldn't 
> work as expected if this changed.
I disagree.  We could change the order of creation from as long as we add them in the right
order.
> 

> 
>> We'll get puzzled users where the value is assigned as null
> For the most common use case ie const + "const" expressions there's no issue.
Yeah, so can we just limit this optimization to constant expressions?

> 
>> Optimizing for constant expressions is a good thing, but I still 
>> think it can be done without a syntax change.
> You have anything you can submit or code we can look at?
I don't know the binding code that well and would recommend waiting for Falcon to learn it,
but I'm pretty sure the binding code in the compiler knows about every token in the expression
as it knows what the change events are for each token.  It knows about literals since they
don't have change events.  It knows about the __NoChangeEvent__ event and I believe it generates
different code for it.  And I think it already knows about constants today as well.

--
Alex Harui
Flex SDK Team
Adobe Systems, Inc.
http://blogs.adobe.com/aharui


Mime
View raw message