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31 lines
788 B
Racket
31 lines
788 B
Racket
#lang br/quicklang
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(require "grammar.rkt")
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(module+ reader
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(provide read-syntax))
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(define (tokenize ip)
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(for/list ([tok (in-port read-char ip)])
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tok))
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(define (parse src toks)
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(define parse-tree-datum (parse-to-datum toks))
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(for/list ([leaf (in-list (cdr parse-tree-datum))])
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(integer->char
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(for/sum ([val (in-list (cdr leaf))]
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[power (in-naturals)]
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#:when (equal? val '(taco)))
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(expt 2 power)))))
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(define (read-syntax src ip)
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(define toks (tokenize ip))
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(define parse-tree (parse src toks))
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(strip-context
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(with-syntax ([PT parse-tree])
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#'(module tacogram-mod tacogram-demo
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PT))))
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(define-macro (mb PT)
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#'(#%module-begin
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(display (list->string 'PT))))
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(provide (rename-out [mb #%module-begin])) |