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adding an additional test up front, because js-vm and moby are special

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This commit is contained in:
Danny Yoo 2011-10-05 17:55:39 -04:00
parent 79c273dc88
commit fb04bf4595
1 changed files with 19 additions and 1 deletions
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20
js-assembler/check-valid-module-source.rkt
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@ -17,6 +17,17 @@
(define ns (make-base-namespace))
(define (looks-like-old-moby-or-js-vm? module-source-path)
(or (call-with-input-file* module-source-path
(lambda (ip) (regexp-match #px"^\\s*#lang\\s+planet\\s+dyoo/moby" ip)))
(call-with-input-file* module-source-path
(lambda (ip) (regexp-match #px"^\\s*#lang\\s+planet\\s+dyoo/js-vm" ip)))))
(define (check-valid-module-source module-source-path)
;; Check that the file exists.
(unless (file-exists? module-source-path)
@ -33,8 +44,15 @@
module-source-path
(current-root-path))
(abort-abort)])
;; Does it look like something out of moby or js-vm? Abort early, because if we don't do
;; this up front, Racket will try to install the deprecated module, and that's bad.
(when (looks-like-old-moby-or-js-vm? module-source-path)
(printf "ERROR: The program in ~e appears to be written using the deprecated project js-vm or Moby.\n\nPlease change the lang line to:\n\n #lang planet dyoo/whalesong\n\ninstead.\n"
module-source-path)
(abort-abort))
;; Check that it looks like a module.
(define stx