MutableToPure.hs

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module Feldspar.Core.Frontend.MutableToPure where

import Language.Syntactic

import Feldspar.Core.Types
import Feldspar.Core.Constructs
import Feldspar.Core.Constructs.MutableToPure
import Feldspar.Core.Frontend.Array
import Feldspar.Core.Frontend.Loop
import Feldspar.Core.Frontend.Mutable
import Feldspar.Core.Frontend.MutableArray


withArray :: (Type a, Syntax b) => Data (MArr a) -> (Data [a] -> M b) -> M b
withArray = sugarSymC WithArray

runMutableArray :: Type a => M (Data (MArr a)) -> Data [a]
runMutableArray = sugarSymC RunMutableArray

freezeArray :: Type a => Data (MArr a) -> M (Data [a])
freezeArray marr = withArray marr return

thawArray :: Type a => Data [a] -> M (Data (MArr a))
thawArray arr = do
  marr <- newArr_ (getLength arr)
  forM (getLength arr) (\ix ->
    setArr marr ix (getIx arr ix)
   )
  return marr