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23 lines
835 B
Racket
23 lines
835 B
Racket
12 years ago
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#lang racket
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;; Macro that generates all the little xexpr functions
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;; For each tag.
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;;
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(require (for-syntax racket/syntax))
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(define-syntax (define-tags stx)
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(syntax-case stx ()
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[(_ name '(tags ...)) ; match pattern of the calling form
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#`(begin ; start with quasiquoted begin block & splice into it
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(define name '(tags ...)) ; assign the provided name to the tags as a group
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#,@(for/list ([tag (syntax->list #'(tags ...))]) ; step through list of tags
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(with-syntax ((tag-as-id (format-id stx "~a" tag))) ; convert tag into identifier
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; todo: edit this to use tools:tagger
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#`(define (tag-as-id . x) `(tag-as-id ,@x)))))])) ; write out the xexpr function
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(provide (all-defined-out))
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