[parenscript-devel] Looking for examples to pass lisp values into parenscript

David Barker kzar at kzar.co.uk
Sat Jan 17 00:19:58 UTC 2009


Ahh great work that was a sticking point I had with Parenscript, I will
upgrade in a min.

Cheers, Dave.

> Yes, that's exactly it.
>
> Vladimir
>
> On Thu, Jan 15, 2009 at 6:58 PM, David Barker <kzar at kzar.co.uk> wrote:
>> Does that mean something like this would work?
>>
>> (let ((a "example"))
>>  (js (alert (lisp a))))
>>
>> Cheers, Dave.
>>
>>> Just pushed a patch out that does compilation to strings at macro
>>> expansion-time for the PS and PS-INLINE macros as opposed expanding to
>>> PS*. There are some changes to the compilation interface, but the
>>> important difference is that now the LISP special form behaves
>>> differently for PS (has access to the lexical environment) vs. PS*
>>> (dynamic environment only). So using LISP inside PS* is now exactly
>>> like using EVAL when it comes to which environment the escaped CL code
>>> has access to.
>>>
>>> Vladimir
>>>
>>> On Sun, Dec 7, 2008 at 10:47 PM, Vladimir Sedach <vsedach at gmail.com>
>>> wrote:
>>>>> if we (cl-dwim guys) had infinite time we would do it ourselves, but
>>>>> i
>>>>> hope someone will pick up the idea and do it for ps... ;)
>>>>
>>>> I agree this is the right way to go. Not only would it provide for
>>>> more meaningful embedding of PS code in CL code (to answer Daniel's
>>>> earlier query, the "lisp" macro evaluates its arguments at PS
>>>> macro-expansion time (compile time, ie every time ps* gets called) via
>>>> eval, hence it has no access to anything but the dynamic environment
>>>> of the ps* call), but it would also obviate any need for PS output
>>>> caching mechanisms (I know at least one instance of this has already
>>>> been implemented in a PS application).
>>>>
>>>> I might have a large chunk of time available over New Year's to work
>>>> on this. I'd like to make a release before rewriting the compiler
>>>> though. Please get your suggestions and bugfixes for the next release
>>>> in soon!
>>>>
>>>> Vladimir
>>>>
>>>>> --
>>>>>  attila
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>>>>>
>>>>
>>>
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>>
>>
>>
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