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Define a knot-tied handler.

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Rob Rix 2022-01-27 14:18:51 -05:00
parent 512618e17d
commit 6084ab89e9
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1 changed files with 6 additions and 1 deletions
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7
semantic-analysis/src/Analysis/Syntax.hs
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@ -1,4 +1,4 @@
{-# LANGUAGE ConstraintKinds #-}
-- {-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DeriveTraversable #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE ExistentialQuantification #-}
@ -18,6 +18,7 @@ module Analysis.Syntax
-- * Pretty-printing
, Print(..)
-- * Abstract interpretation
, eval0
, eval
, Interpret(..)
-- * Parsing
@ -33,6 +34,7 @@ import Control.Effect.Labelled
import Control.Monad (guard)
import qualified Data.Aeson as A
import qualified Data.Aeson.Types as A
import Data.Function (fix)
import qualified Data.IntMap as IntMap
import Data.Text (Text, pack, unpack)
import qualified Data.Vector as V
@ -89,6 +91,9 @@ infixr 6 <+>
-- Abstract interpretation
eval0 :: Interpret m i -> m i
eval0 = fix eval
eval :: (Interpret m i -> m i) -> (Interpret m i -> m i)
eval eval (Interpret f) = f eval