[racket-dev] [plt] Push #20578: master branch updated

You are right. I used it and it works. Nice!

Jay

On Sat, Jun 26, 2010 at 4:58 PM, Robby Findler
<robby at eecs.northwestern.edu> wrote:
> It should be set by the 'configure-runtime thunk (from
> module->language-info), right?
>
> (I'm not sure about the bug, tho.)
>
> Robby
>
> On Sat, Jun 26, 2010 at 8:47 AM, Jay McCarthy <jay.mccarthy at gmail.com> wrote:
>> Just using the core of even-read didn't work. It would start to read
>> after parse-statement had returned and then my parser would just sit
>> there because the port wasn't returning EOF. I think it is a bug.
>>
>> Jay
>>
>> On Fri, Jun 25, 2010 at 10:44 PM, Eli Barzilay <eli at barzilay.org> wrote:
>>> On Jun 26, jay at racket-lang.org wrote:
>>>> +  ; XXX This is almost certainly wrong.
>>>> +  (define (even-read src ip)
>>>> +    (begin0
>>>> +      (parameterize ([current-source-name src])
>>>> +       (datum->syntax #f (parse-statement ip)))
>>>> +      (current-read-interaction odd-read)))
>>>> +  (define (odd-read src ip)
>>>> +    (current-read-interaction even-read)
>>>> +    eof)
>>>> +
>>>> +  (current-read-interaction
>>>> +   even-read))
>>>
>>> This is not just wrong -- it is likely to break things randomly.
>>> Something like -- if you happen to invoke the datalog reader
>>> indirectly (like just `read' a file in the language), you'd end up
>>> with one of these readers as a side-effect.  This is exactly how the
>>> scribble/text language messed things up in a very confusing way: by
>>> banging `current-print' to do its own thing.
>>>
>>> --
>>>          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
>>>                    http://barzilay.org/                   Maze is Life!
>>>
>>
>>
>>
>> --
>> Jay McCarthy <jay at cs.byu.edu>
>> Assistant Professor / Brigham Young University
>> http://teammccarthy.org/jay
>>
>> "The glory of God is Intelligence" - D&C 93
>> _________________________________________________
>>  For list-related administrative tasks:
>>  http://lists.racket-lang.org/listinfo/dev
>



-- 
Jay McCarthy <jay at cs.byu.edu>
Assistant Professor / Brigham Young University
http://teammccarthy.org/jay

"The glory of God is Intelligence" - D&C 93