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

24 lines
561 B
Racket

#lang br/quicklang
(module+ reader
(provide read-syntax))
(define (tokenize ip)
(for/list ([tok (in-port read ip)])
tok))
(define (parse toks)
(for/list ([tok (in-list toks)])
(integer->char
(for/sum ([val (in-list tok)]
[power (in-naturals)]
#:when (eq? val 'taco))
(expt 2 power)))))
(define (read-syntax src ip)
(define toks (tokenize ip))
(define parse-tree (parse toks))
(strip-context
(with-syntax ([PT parse-tree])
#'(module untaco racket
(display (list->string 'PT))))))