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loopbreak nondet

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This commit is contained in:
Sandy Maguire 2019-03-21 01:24:20 -04:00
parent df7c9be46d
commit 9dd70fa096
1 changed files with 11 additions and 8 deletions
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19
src/Polysemy/NonDet.hs
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@ -1,4 +1,5 @@
{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE TemplateHaskell #-}
module Polysemy.NonDet
( NonDet (..)
@ -47,12 +48,14 @@ instance Monad (NonDetC m) where
{-# INLINE (>>=) #-}
runNonDet :: Alternative f => Semantic (NonDet ': r) a -> Semantic r (f a)
runNonDet (Semantic m) = Semantic $ \k -> runNonDetC $ m $ \u ->
case decomp u of
Left x -> NonDetC $ \cons nil -> do
z <- k $ weave [()] (fmap concat . traverse runNonDet) x
foldr cons nil z
Right Empty -> empty
Right (Choose ek) -> pure (ek True) <|> pure (ek False)
inlineRecursiveCalls [d|
runNonDet :: Alternative f => Semantic (NonDet ': r) a -> Semantic r (f a)
runNonDet (Semantic m) = Semantic $ \k -> runNonDetC $ m $ \u ->
case decomp u of
Left x -> NonDetC $ \cons nil -> do
z <- k $ weave [()] (fmap concat . traverse runNonDet) x
foldr cons nil z
Right Empty -> empty
Right (Choose ek) -> pure (ek True) <|> pure (ek False)
|]