* How to define user reader macro in guile?
@ 2016-03-20 10:38 Park SungMin
2016-03-20 11:40 ` Panicz Maciej Godek
0 siblings, 1 reply; 2+ messages in thread
From: Park SungMin @ 2016-03-20 10:38 UTC (permalink / raw
To: guile-user
is it possible to expand via squared-bracket.
i.e... [1 2 3] => (list 1 2 3) [(+ 1 2) 3] => (list (+ 1 2) 3)
I know (read-enable 'square-brackets) ...but It just same paren.
[1 2 3] => (1 2 3)
is it possible?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: How to define user reader macro in guile?
2016-03-20 10:38 How to define user reader macro in guile? Park SungMin
@ 2016-03-20 11:40 ` Panicz Maciej Godek
0 siblings, 0 replies; 2+ messages in thread
From: Panicz Maciej Godek @ 2016-03-20 11:40 UTC (permalink / raw
To: Park SungMin; +Cc: guile-user@gnu.org
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2016-03-20 11:38 GMT+01:00 Park SungMin <byulparan_eng@icloud.com>:
>
> is it possible to expand via squared-bracket.
>
> i.e... [1 2 3] => (list 1 2 3) [(+ 1 2) 3] => (list (+ 1 2) 3)
>
>
> I know (read-enable 'square-brackets) ...but It just same paren.
>
> [1 2 3] => (1 2 3)
>
> is it possible?
>
The closest thing is read-hash-extend:
https://www.gnu.org/software/guile/manual/html_node/Reader-Extensions.html#Reader-Extensions
You can have a look in here to see a more sophisticated example:
https://bitbucket.org/panicz/slayer/src/8b741c21b7372c24874d7cd1875e2aae3fc43abe/guile-modules/extra/ref.scm?at=default&fileviewer=file-view-default#ref.scm-201
(however, I do not recommend to use such extensions)
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