[Newcompiler] Does the new compiler work for Tweak?

[Marcus Denker]

On 03.12.2008, at 19:20, Ken G. Brown wrote:

> On the croquet-dev list, John Dougan mentions that "Tweak uses a  
> modified compiler".
> Does the new compiler work for Tweak?
>

No, they hacked the old compiler.

	Marcus


> Ken G. Brown
>
> At 6:00 AM -0500 12/3/08, croquet-dev-request at duke.edu apparently  
> wrote:
>> Date: Wed, 3 Dec 2008 01:41:29 -0800
>> From: "John Dougan" <jdougan at acm.org>
>> Subject: Re: [croquet-dev] Hard to find instance variables in  
>> Croquet.
>>
>> They're almost certainly not instance vars, but "fields".   Fields  
>> are
>> something like instance vars but they are represented in the  
>> myProperties
>> dict in the CObject. If a field is not used it won't take up  
>> storage in the
>> dict.  Tweak uses a modified compiler that translates variable  
>> reference
>> syntax into accessor message sends and creates accessors  
>> automatically so
>> that the vars are never actually accessed directly.
>> So in Tweak: (assuming that foo is not a method temporary var)
>>   foo := self bar: 4 + 5.
>>   self foo: (self bar: 4 + 5).
>> do pretty much the same thing in the bytecode. This is useful as it  
>> means
>> that it's hard to accidentally bypass the event mechanisms in Tweak.
>>
>> If you browse a subclass of CObject and right click on one of the  
>> instance
>> vars you'll see a pop up giving you the options for the var.  The
>> color/emphasis of the var name tells you what kind of var it is.
>>
>> Some description of the fields is at
>> http://tweakproject.org/TECHNOLOGY/Tutorials/BankAccountTutorial/  
>> and at
>> http://tweakproject.org/tweak/tutorials/Tweak-Introduction.pdf
>>
>> Cheers,
>> -- John
>>
>> On Tue, Dec 2, 2008 at 23:46, askoh <askoh at askoh.com> wrote:
>>
>>>
>>> There seem to be many instance variables in the class CPlayer that  
>>> are not
>>> showing up in the debugger and 'show hierarchy'. Why? Is this a  
>>> known bug
>>> or
>>> something special?
>>>
>>> Aik-Siong Koh
>>> --
>>> View this message in context:
>>>
>> http://www.nabble.com/Hard-to-find-instance-variables-in-Croquet.-tp20808243p20
>> 808243.html
>>> Sent from the Croquet - Dev mailing list archive at Nabble.com.
>>>
>>>
>>
>>
>> --
>> John Dougan
>> jdougan at acm.org

--
Marcus Denker  --  denker at iam.unibe.ch
http://www.iam.unibe.ch/~denker