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$prompt is now its own kind of CPS term.

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* module/language/cps.scm ($prompt): Rework to be its own term kind.
  Now $continue always continues to a single continuation.  Adapt
  callers.
This commit is contained in:
Andy Wingo 2018-01-03 17:17:23 +01:00
parent 29fee39c2a
commit ee15ca1455
22 changed files with 198 additions and 195 deletions
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8
module/language/cps/self-references.scm
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@ -46,16 +46,16 @@
(($ $primcall name param args)
($primcall name param ,(map subst args)))
(($ $values args)
($values ,(map subst args)))
(($ $prompt escape? tag handler)
($prompt escape? (subst tag) handler))))
($values ,(map subst args)))))
(define (rename-term term)
(rewrite-term term
(($ $continue k src exp)
($continue k src ,(rename-exp exp)))
(($ $branch kf kt src op param args)
($branch kf kt src op param ,(map subst args)))))
($branch kf kt src op param ,(map subst args)))
(($ $prompt k kh src escape? tag)
($prompt k kh src escape? (subst tag)))))
(define (visit-label label cps)
(match (intmap-ref cps label)