[racket] How to to make a program that will take a simple racket file, parse it with the reader in a way that I can expand it?

Thank you for your answer, it works partially.

The read-syntax returns 
	'(module fichier-programme racket
	   (#%module-begin
	     (define aa 7)
	     (let ((bb 3)) (+ aa bb))))

but expand cannot expand it. The error message is 
	<unsaved editor>::1: module: unbound identifier;
 	also, no #%app syntax transformer is bound in: module

-----Message d'origine-----
De : Vincent St-Amour [mailto:stamourv at ccs.neu.edu] 
Envoyé : 14 juin 2013 16:02
À : Andre Mayers
Cc : 'Racket'
Objet : Re: [racket] How to to make a program that will take a simple racket file, parse it with the reader in a way that I can expand it?

The following should work:

    (parameterize ([read-accept-reader #t])
      (expand (read-syntax fichier-programme in)))

If you don't need to manipulate the expansion programmatically, you can use DrRacket's Macro Stepper instead.

Vincent



At Fri, 14 Jun 2013 15:48:40 -0400,
Andre Mayers wrote:
> 
> [1  <multipart/alternative (7bit)>]
> [1.1  <text/plain; iso-8859-1 (quoted-printable)>] I want to make a 
> little program that will take a simple racket file, parse it with the 
> reader in a way that I can expand it.
> 
> For example, I have the file programme.rkt that have the following line :
> 
>                 #lang racket
> 
>                 (define aa 7)
> 
>                 (let ( [bb 3])
> 
>                   (+ aa bb))
> 
>                   
> 
> I would like to do something like               
> 
>                 (define fichier-programme "C:\\fichier-programme.rkt")
> 
>                 (define in (open-input-file fichier-programme))
> 
>                 (expand (read-syntax fichier-programme in))
> 
>                 (close-input-port in)
> 
>                 
> 
>  
> 
> André Mayers, Ph.D., M. Ps.
> 
> professeur agrégé
> 
> Département d'informatique
> 
> Université de Sherbrooke
> 
> Sherbrooke (Québec) Canada J1K 2R1
> 
> tél: +1 819-821-8000 poste 62041
> 
> fax: +1 819-821-8200
> 
> andre.mayers at usherbrooke.ca
> 
> http://info.usherbrooke.ca/AndreMayers
> 
>  
> 
>  
> 
> De : users-bounces at racket-lang.org 
> [mailto:users-bounces at racket-lang.org] De la part de Matt Jadud Envoyé 
> : 14 juin 2013 14:38 À : Sam Tobin-Hochstadt Cc : Racket Objet : Re: 
> [racket] Racket Blogging - How To??
> 
>  
> 
> I had no idea!
> 
>  
> 
> I take it this is my Jekyll replacement? Thank you!
> 
>  
> 
> Cheers,
> 
> Matt
> 
>  
> 
>  
> 
> On Fri, Jun 14, 2013 at 11:31 AM, Sam Tobin-Hochstadt 
> <samth at ccs.neu.edu>
> wrote:
> 
> On Fri, Jun 14, 2013 at 11:24 AM, Ray Racine <ray.racine at gmail.com> wrote:
> > So I'm thinking about blogging about some aspect (positive) of 
> > Racket
> coding
> > this weekend.  Not sure what the options are these days.
> >
> > A) Use a blogging site of choice + cut/paste into some online code 
> > formatter, enscriptem etc..
> > B) Use Scribble to generate html -> host generated html on gitpages 
> > or
> self
> > host.
> > C) I recall seeing at least 1 or 2 posts on the list about some 
> > Racket
> > project(s) which facilitate Racket blogging.
> >
> > Recommendations?
> 
> Frog: https://github.com/greghendershott/frog
> 
> Sam
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