beautiful-racket/beautiful-racket-demo/taco-compiler-demo/main.rkt

#lang br/quicklang

(module+ reader
  (provide read-syntax))

(define (tokenize ip)
  (for/list ([tok (in-port read-char ip)])
    tok))

(define (parse src toks)
  (for/list ([tok (in-list toks)])
    (define int (char->integer tok))
    (for/list ([bit (in-range 7)])
      (if (bitwise-bit-set? int bit)
          'taco
          null))))

(define (read-syntax src ip)
  (define toks (tokenize ip))
  (define parse-tree (parse src toks))
  (strip-context
   (with-syntax ([PT parse-tree])
     #'(module tacofied taco-compiler-demo
         PT))))

(define-macro (mb PT)
  #'(#%module-begin
     (for-each displayln 'PT)))
(provide (rename-out [mb #%module-begin]))