69 lines
2.8 KiB
Racket
69 lines
2.8 KiB
Racket
#lang racket
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(module+ test
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(require rackunit)
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(require (for-syntax racket/base))
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(require (for-syntax syntax/srcloc))
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(require (for-template "../pattern.rkt"))
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(require "../pattern.rkt")
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(struct foo (bar zot) #:prefab)
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(define-syntax (check-analyse-pattern stx)
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(syntax-case stx ()
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[(_ expected-pat actual-stxpat fn)
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#`(with-check-info [('real-location #,(source-location->string stx))]
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(check-match (fn '#,(analyse-pattern #'actual-stxpat)) expected-pat))]
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[(_ expected-pat actual-stxpat)
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#'(check-analyse-pattern expected-pat actual-stxpat values)]))
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(check-analyse-pattern `(compound ,_ (atom 123) (atom 234)) (foo 123 234))
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(check-analyse-pattern `(compound ,_ (discard) (atom 234)) (foo _ 234))
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(check-analyse-pattern `(compound ,_ (atom 123) (atom xyzzy)) (foo 123 xyzzy))
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(check-analyse-pattern `(compound ,_ (atom 123) (capture cap (discard))) (foo 123 $cap))
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(check-analyse-pattern `(compound ,_ (atom 123) (capture cap (atom 234))) (foo 123 ($ cap 234)))
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(check-analyse-pattern `(atom (bar 123 234)) (bar 123 234))
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(check-analyse-pattern `(atom (bar 123 $beep)) (bar 123 $beep))
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(check-analyse-pattern `(compound list (atom 123) (capture q (discard))) (list 123 $q))
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(define ((s->d f) desc) (syntax->datum (f desc)))
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(check-analyse-pattern '() $cap desc->key)
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(check-analyse-pattern '() $cap desc->skeleton-proj)
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(check-analyse-pattern '(()) $cap desc->capture-proj)
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(check-analyse-pattern '#f $cap (s->d desc->skeleton-stx))
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(check-analyse-pattern '(capture (discard)) $cap (s->d desc->assertion-stx))
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(check-analyse-pattern '(123) (foo 123 $cap) desc->key)
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(check-analyse-pattern '((0)) (foo 123 $cap) desc->skeleton-proj)
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(check-analyse-pattern '((1)) (foo 123 $cap) desc->capture-proj)
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(check-analyse-pattern '(list struct:foo #f #f) (foo 123 $cap) (s->d desc->skeleton-stx))
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(check-analyse-pattern '(foo 123 (capture (discard))) (foo 123 $cap) (s->d desc->assertion-stx))
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(check-analyse-pattern '((bar 'beep)) (foo (bar 'beep) $cap) desc->key)
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(check-analyse-pattern '((0)) (foo (bar 'beep) $cap) desc->skeleton-proj)
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(check-analyse-pattern '((1)) (foo (bar 'beep) $cap) desc->capture-proj)
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(check-analyse-pattern '(list struct:foo #f #f) (foo (bar 'beep) $cap) (s->d desc->skeleton-stx))
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(check-analyse-pattern '(foo (bar 'beep) (capture (discard)))
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(foo (bar 'beep) $cap)
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(s->d desc->assertion-stx))
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(define-pattern-expander foo123
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(syntax-rules ()
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[(_ zot) (foo 123 zot)]))
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(define-pattern-expander foo234
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(syntax-rules ()
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[(_ zot) (foo 234 zot)])
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(syntax-rules ()
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[(_ zot) (foo 234 zot)]))
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(check-analyse-pattern `(compound ,_ (atom 123) (atom 'zot)) (foo123 'zot))
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(check-analyse-pattern `(compound ,_ (atom 234) (atom 'zot)) (foo234 'zot))
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(check-equal? (foo 234 'zot) (foo234 'zot))
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)
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