[racket] module->language-info at repl

From: Jon Rafkind (rafkind at cs.utah.edu)
Date: Thu Sep 1 15:01:48 EDT 2011

More details on how my system is setup:

1. Make a directory for a new language called Z
2. Edit Z/lang/reader.rkt and put this in there
#lang s-exp syntax/module-reader


#:info z-info

(define (z-info key default filter)
  (printf "called z-info\n")
  (filter key default))

3. Edit Z/main.rkt
#lang racket/base
(provide (all-from-out racket/base))

4. Run with the Z language
Welcome to Racket v5.1.3.6.

At this point I would expect it to say "called z-info" to try to set up the runtime.

On 09/01/2011 12:50 PM, Jon Rafkind wrote:
> The repl doesn't seem to invoke the module language's get-info procedure. My #lang has a `get-info' procedure that is passed to the module-reader by #:info
> honu-info. get-info is defined as
> (provide honu-info)
> (define (honu-info key default default-filter)
>   (printf "get info for ~a\n" key)
>   (case key
>     [(color-lexer) (dynamic-require 'honu/core/read
>                                     'color-lexer)]
>     [(configure-runtime) `(#(honu/core/runtime configure))]
>     [else
>       (default-filter key default)]))
> It seems only drracket will call `get-info', though. Is there a way to make the repl call this as well, and if it doesn't can we make it?
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