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{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE Strict #-}
module GHC.CmmToAsm.Wasm.Utils
( naturalNarrowing,
widthMax,
detEltsUFM,
detEltsUniqMap,
builderCommas,
)
where
import Data.ByteString.Builder
import Data.List (intersperse, sortOn)
import GHC.Cmm
import GHC.Prelude
import GHC.Types.Unique.FM
import GHC.Types.Unique.Map
naturalNarrowing :: Width -> Integer -> Integer
naturalNarrowing w i
| i < 0 = narrowS w i
| otherwise = narrowU w i
widthMax :: Width -> Integer
widthMax w = (1 `shiftL` widthInBits w) - 1
detEltsUFM :: Ord k => UniqFM k0 (k, a) -> [(k, a)]
detEltsUFM = sortOn fst . nonDetEltsUFM
detEltsUniqMap :: Ord k => UniqMap k a -> [(k, a)]
detEltsUniqMap = sortOn fst . nonDetEltsUniqMap
builderCommas :: (a -> Builder) -> [a] -> Builder
builderCommas f xs = mconcat (intersperse ", " (map f xs))
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