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[functional-tests/regex] tweak definition of rx

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This commit is contained in:
Joe Thornber 2017-08-22 17:41:40 +01:00
parent c049ec6f39
commit 87b3556d36
1 changed files with 5 additions and 7 deletions
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12
functional-tests/regex.scm
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@ -367,13 +367,11 @@
;; rx := simple-rx ("|" simple-rx)*
(define (rx)
(define (combine rs)
(fold-left alt (car rs) (cdr rs)))
(p:parse-m (p:<- r (simple-rx))
(p:<- rest (p:many* (p:>> (p:lit "|")
(simple-rx))))
(p:pure (combine (cons r rest)))))
(p:lift2 (lambda (r rs)
(fold-left alt r rs))
(simple-rx)
(p:many* (p:>> (p:lit "|")
(simple-rx)))))
;;-----------------------------------------------------------------------
;; The top level routine, parses the regex string and compiles it into a