[Laszlo-dev] Class static blocks

[Donald Anderson]

Right now we don't support static blocks, but if someone needs
that effect, they can code a static function and call it in a static  
initializer:

   static var foo = pseudoStaticBlock();

I can certainly put it on the list though...

On Apr 21, 2008, at 9:30 AM, P T Withington wrote:

> We ought to update our code and parser to follow this.
>
> Begin forwarded message:
>
>> From: "Lars Hansen" <lhansen at adobe.com>
>> Date: 21 April 2008 00:40:09 EDT
>> To: "Michael O'Brien" <mob at mbedthis.com>, "Jeff Dyer" <jodyer at adobe.com 
>> >
>> Cc: es4-discuss Discuss <es4-discuss at mozilla.org>
>> Subject: RE: Class static blocks
>>
>> Static blocks are anonymous parameterless functions.  "var" hoists
>> to the top of these functions (as in any other functions); "static"
>> is disallowed (because it's legal only on class attributes); and
>> other binding forms that are legal in functions ("function", "let",
>> "const") are legal.
>>
>> --lars
>>
>>> -----Original Message-----
>>> From: es4-discuss-bounces at mozilla.org
>>> [mailto:es4-discuss-bounces at mozilla.org] On Behalf Of Michael  
>>> O'Brien
>>> Sent: 20. april 2008 22:16
>>> To: Jeff Dyer
>>> Cc: es4-discuss Discuss
>>> Subject: Re: Class static blocks
>>>
>>> Jeff,
>>>
>>> What happens to "var" declarations inside a static block?
>>> Are they converted to static declarations or disallowed?
>>>
>>> Similarly, I presume a redundant "static" attribute inside a
>>> static block is allowed.
>>>
>>> Michael
>>>
>>>
>>> On Apr 20, 2008, at 4:50 PM, Jeff Dyer wrote:
>>>>
>>>>
>>>>
>>>> On 4/20/08 11:52 AM, Michael O'Brien wrote:
>>>>
>>>>> I wanted to clarify the meaning of a static block. Consider:
>>>>>
>>>>> class Shape {
>>>>>
>>>>> static var count
>>>>> var origin
>>>>>
>>>>> static {
>>>>> // Is this static initialization code?
>>>>>
>>>>> count = 1
>>>>> }
>>>>>
>>>>> {
>>>>>
>>>>> // Is this instance initialization code?
>>>>>
>>>>> origin = 0
>>>>> }
>>>>> }
>>>>>
>>>>>
>>>>> Reading the latest draft of the grammar I'm assuming that you must
>>>>> now put static init code inside a static {} block. Is this  
>>>>> correct?
>>>>
>>>> That is correct.
>>>>
>>>>> Does that mean that other directives outside of methods and static
>>>>> blocks are instance initialization code?
>>>>
>>>> No, statements are no longer allowed at the top level of a class
>>>> definition.
>>>> Class initialization code goes in 'static {...}' blocks,
>>> and instance
>>>> initialization code goes in constructors, of course.
>>> Multiple 'static
>>>> {...}'
>>>> blocks are allowed.
>>>>
>>>> Jd
>>>>
>>>
>>> _______________________________________________
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>>> Es4-discuss at mozilla.org
>>> https://mail.mozilla.org/listinfo/es4-discuss
>>>
>> _______________________________________________
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>


--

Don Anderson
Java/C/C++, Berkeley DB, systems consultant

voice: 617-547-7881
email: dda at ddanderson.com
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