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31 lines
685 B
Racket
31 lines
685 B
Racket
#lang br/quicklang
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(require brag/support "grammar.rkt")
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(provide (all-from-out br/quicklang) (all-defined-out))
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(module+ reader
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(provide read-syntax))
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(define lex
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(lexer
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["#$" lexeme]
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["%" lexeme]
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[any-char (lex input-port)]))
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(define (taco-program . pieces) pieces)
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(define (taco-leaf . pieces)
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(integer->char
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(for/sum ([bit (in-list pieces)]
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[pow (in-naturals)])
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(* bit (expt 2 pow)))))
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(define (taco) 1)
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(define (not-a-taco) 0)
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(define (read-syntax src ip)
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(define parse-tree (parse (λ () (lex ip))))
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(strip-context
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(with-syntax ([PT parse-tree])
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#'(module vic taco-victory-demo
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(display (apply string PT)))))) |