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18 lines
621 B
Racket
18 lines
621 B
Racket
#lang br/quicklang
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(require brag/support)
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(provide make-tokenizer)
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(define hdl-test-lexer
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(lexer-srcloc
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[(:or (from/to "/*" "*/")
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(from/to "//" #\newline)) (token 'COMMENT lexeme #:skip? #t)]
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[whitespace (token lexeme #:skip? #t)]
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[(:or "load" "output-list" "output-file" "compare-to" "set" "eval" "output" "," ";") lexeme]
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[(:seq "%" (:+ alphabetic numeric ".")) (token 'FORMAT-STRING lexeme)]
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[(:+ numeric) (token 'VAL (string->number lexeme))]
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[(:+ alphabetic numeric "-" ".") (token 'ID lexeme)]))
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(define (make-tokenizer ip)
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(define (next-token) (hdl-test-lexer ip))
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next-token)
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