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beautiful-racket/beautiful-racket-demo/jsonic-demo/tokenizer.rkt

14 lines
370 B
Racket

#lang br/quicklang
(require brag/support)
(define (make-tokenizer port)
(define (next-token)
(define jsonic-lexer
(lexer
[(from/to "//" "\n") (next-token)]
[(from/to "@$" "$@")
(token 'SEXP-TOK (trim-ends "@$" lexeme "$@"))]
[any-char (token 'CHAR-TOK lexeme)]))
(jsonic-lexer port))
next-token)
(provide make-tokenizer)