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Fixing bug in match for var extraction of quasiquote patterns.

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This commit is contained in:
Alex Shinn 2015-05-09 21:20:21 +09:00
parent 7d697c29c0
commit b1243c63d4
2 changed files with 7 additions and 4 deletions
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2
lib/chibi/match-test.sld
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@ -33,6 +33,8 @@
(match '(ok . ok) ((x . 'bad) x) (('ok . x) x)))
(test "duplicate symbols bound" 3
(let ((a '(1 2))) (match a ((and (a 2) (1 b)) (+ a b)) (_ #f))))
(test "duplicate quasiquote" 'ok
(match '(a b) ((or `(a ,x) `(,x b)) 'ok) (_ #f)))
(test "ellipses" '((a b c) (1 2 3))
(match '((a . 1) (b . 2) (c . 3))

9
lib/chibi/match/match.scm
View file

@ -227,6 +227,7 @@
;; performance can be found at
;; http://synthcode.com/scheme/match-cond-expand.scm
;;
;; 2015/05/09 - fixing bug in var extraction of quasiquote patterns
;; 2014/11/24 - adding Gauche's `@' pattern for named record field matching
;; 2012/12/26 - wrapping match-let&co body in lexical closure
;; 2012/11/28 - fixing typo s/vetor/vector in largely unused set! code
@ -808,13 +809,13 @@
(match-extract-vars x k i v))
((match-extract-quasiquote-vars (unquote x) k i v (#t . d))
(match-extract-quasiquote-vars x k i v d))
((match-extract-quasiquote-vars (x . y) k i v (#t . d))
((match-extract-quasiquote-vars (x . y) k i v d)
(match-extract-quasiquote-vars
x
(match-extract-quasiquote-vars-step y k i v d) i ()))
((match-extract-quasiquote-vars #(x ...) k i v (#t . d))
(match-extract-quasiquote-vars-step y k i v d) i () d))
((match-extract-quasiquote-vars #(x ...) k i v d)
(match-extract-quasiquote-vars (x ...) k i v d))
((match-extract-quasiquote-vars x (k ...) i v (#t . d))
((match-extract-quasiquote-vars x (k ...) i v d)
(k ... v))
))