suzanne.soy/macrotypes
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generalize stx-member

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This commit is contained in:
Stephen Chang 2017-03-31 15:15:04 -04:00
parent 7e3a21ba6f
commit 28f6d782ec
1 changed files with 11 additions and 3 deletions
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14
macrotypes/stx-utils.rkt
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@ -35,11 +35,17 @@
(define paren-prop (syntax-property stx 'paren-shape))
(and paren-prop (char=? #\{ paren-prop)))
(define (stx-member v stx)
(member v (stx->list stx) free-identifier=?))
(define (stx-datum-equal? x y [eq equal?])
(eq (datum->stx x) (datum->stx y)))
(define (stx-member v stx [eq free-id=?])
(member v (stx->list stx) eq))
(define (stx-datum-member v stx [eq stx-datum-equal?])
(stx-member v stx eq))
(define (str-stx-member v stx)
(member (datum->syntax v) (map datum->syntax (stx->list stx)) string=?))
(stx-datum-member v stx))
(define (str-stx-assoc v stx)
(assoc v (map stx->list (stx->list stx)) stx-str=?))
(define (stx-assoc v stx [cmp free-identifier=?]) ; v = id
@ -81,6 +87,8 @@
(define (stx-remove-dups Xs)
(remove-duplicates (stx->list Xs) free-identifier=?))
(define (stx-remove v lst [f free-id=?])
(remove v (stx->list lst) f))
(define (stx-drop stx n)
(drop (stx->list stx) n))