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32 lines
1.3 KiB
Racket
32 lines
1.3 KiB
Racket
#lang br
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(require (for-syntax racket/list sugar/debug))
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(provide (except-out (all-from-out br) #%module-begin)
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(rename-out [quicklang-mb #%module-begin])
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(for-syntax (all-from-out sugar/debug)))
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(define-macro (quicklang-mb . EXPRS)
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(define-values
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(kw-pairs other-exprs)
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(let loop ([kw-pairs null][exprs (syntax->list #'EXPRS)])
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(if (and (pair? exprs) (keyword? (syntax-e (car exprs))))
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(loop (cons (cons (string->symbol (keyword->string (syntax-e (car exprs))))
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(cadr exprs)) ; leave val in stx form so local binding is preserved
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kw-pairs)
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(cddr exprs))
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(values kw-pairs exprs))))
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(define reserved-keywords '(provide))
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(define (reserved? kw-pair) (memq (car kw-pair) reserved-keywords))
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(define-values (reserved-kwpairs other-kwpairs) (partition reserved? kw-pairs))
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(with-pattern ([((KW . VAL) ...) other-kwpairs]
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[(PROVIDED-ID ...) (or (assq 'provide reserved-kwpairs) null)])
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#`(#%module-begin
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(provide PROVIDED-ID ...)
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(provide (rename-out [VAL KW]) ...)
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(provide #%top #%app #%datum #%top-interaction)
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. #,(datum->syntax #'EXPRS other-exprs #'EXPRS))))
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(module reader syntax/module-reader
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#:language 'br/quicklang
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#:info br-get-info
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(require br/get-info)) |