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[Chicken-users] Re: module for srfi-35
From: |
F. Wittenberger |
Subject: |
[Chicken-users] Re: module for srfi-35 |
Date: |
Mon, 13 Oct 2008 13:46:42 +0200 |
Am Sonntag, den 12.10.2008, 22:55 +0200 schrieb felix winkelmann:
> On Fri, Oct 10, 2008 at 10:18 PM, Jörg F. Wittenberger
> <address@hidden> wrote:
> > I just noticed that my srfi-35 files does not do enough.
> >
> > At the end there is a:
> >
> > (import (rename srfi-35
> > (condition? srfi35:condtition?)
> > (message-condition? srfi35:message-condition?)
> > (condition-message srfi35:condition-message)))
> > (set! condition? srfi35:condtition?)
> > (define message-condition? srfi35:message-condition?)
> > (define condition-message srfi35:condition-message)
> >
> > No, it's not. message-condition? and condition-message I just added a
> > second ago.
>
> Sorry, can't parse that.
My fault, indeed.
So, I have this srfi-35 module and want to access it's bindings from top
level and eval.
I figured that a somewhat typing-extensive way would be to import the
module into top level, renaming it's bindings and define top level
variables bound to the renamed imports.
The code snippet shows the example I used to try whether this works or
not.
This one did.
> >
> > Since there are a few more things to export according to the visible
> > pattern, I guess that's what (import (prefix ... is supposed to be used
> > for. But when I tried, I ended up with unbound things again.
I would rather have used (import (prefix srfi-35 srfi35:)) . But either
I did not understand what I should put where I left the ellipsis here or
this might not work correctly at top level? Whatever I tried, the top
level bindings ended up as undefined values (or was it unbound?).
> >
> > Please: could I get an example here.
> >
>
> No problem, just tell me what you want to do.
At best I would like to do:
(define foo '(import (prefix srfi-35 srfi:35)))
(define bar '(import (rename srfi-18 (raise issue))))
(define (export-them! lst envt)
(fold-import-statements
(lambda (param init) (apply environment-extend! init param) init)
envt
lst))
(define env (make-environment))
(export-them! foo env)
(export-them! bar env)
Now in "env" "issue" is bound to "raise", SRFI-35 is bound with prefix.
Desperately: get an example how to save some typing with rename.
Alternatively: get an idea how to save even more typing using low level
access.
/Jörg
- [Chicken-users] Re: let-location & modules, (continued)
- [Chicken-users] Re: let-location & modules, felix winkelmann, 2008/10/08
- [Chicken-users] Re: let-location & modules, F. Wittenberger, 2008/10/08
- [Chicken-users] Re: let-location & modules, felix winkelmann, 2008/10/09
- [Chicken-users] Re: let-location & modules, F. Wittenberger, 2008/10/09
- [Chicken-users] Re: let-location & modules - modules for srfi-34&35 - 2 questions, F. Wittenberger, 2008/10/10
- [Chicken-users] how to pass a certain environment to "eval", F. Wittenberger, 2008/10/10
- [Chicken-users] Re: how to pass a certain environment to "eval", felix winkelmann, 2008/10/12
- [Chicken-users] Re: how to pass a certain environment to "eval", felix winkelmann, 2008/10/13
- [Chicken-users] module for srfi-35, F. Wittenberger, 2008/10/10
- [Chicken-users] Re: module for srfi-35, felix winkelmann, 2008/10/12
- [Chicken-users] Re: module for srfi-35,
F. Wittenberger <=
- [Chicken-users] Re: module for srfi-35, felix winkelmann, 2008/10/14
- [Chicken-users] Re: module for srfi-35, F. Wittenberger, 2008/10/14
- [Chicken-users] Re: module for srfi-35, felix winkelmann, 2008/10/14
- Re: [Chicken-users] Re: module for srfi-35, F. Wittenberger, 2008/10/14
- [Chicken-users] Re: let-location & modules - modules for srfi-34&35 - 2 questions, felix winkelmann, 2008/10/12