core.logic

Allow application again in pattern matches

Details

  • Type: Enhancement Enhancement
  • Status: Open Open
  • Priority: Major Major
  • Resolution: Unresolved
  • Affects Version/s: None
  • Fix Version/s: None
  • Component/s: None
  • Labels:

Description

Perhaps we can support simple function application in the following manner.

(defne substo [e new a out]
  (['(var ~a) _ _ new])
  (['(var ~y) _ _ '(var ~y)] (nom/hash a y))
  (['(app ~rator ~rand) _ _ '(app ~rator-res ~rand-res)]
     (substo rator new a rator-res)
     (substo rand new a rand-res))
  (['(lam ~(nom/tie c body)) _ _ '(lam ~(nom/tie c body-res))]
     (nom/hash c a) (nom/hash c new)
     (substo body new a body-res)))

If we have a seq in an unquote then we know we have an application. All function symbols are left alone, all arguments are considered to be fresh vars or locals.

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  • Created:
    Updated: