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import Gauge.Main
import qualified Data.Text as T
import qualified Data.Text.Lazy as TL
import qualified Data.Text.Lazy.Encoding as TLE
import qualified Data.ByteString as S
import qualified Data.ByteString.Lazy as L
import Data.ByteString.Lazy.Internal (ByteString (..))
import Data.Streaming.Text
calcLen :: (S.ByteString -> DecodeResult)
-> L.ByteString
-> Int
calcLen =
loop 0
where
loop total _ Empty = total
loop total dec (Chunk bs bss) =
total' `seq` loop total' dec' bss
where
DecodeResultSuccess t dec' = dec bs
total' = total + T.length t
handleEncoding :: ( String
, TL.Text -> L.ByteString
, L.ByteString -> TL.Text
, S.ByteString -> DecodeResult
)
-> Benchmark
handleEncoding (name, encodeLazy, decodeLazy, decodeStream) = bgroup name
[ bench "lazy" $ whnf (TL.length . decodeLazy) lbs
, bench "stream" $ whnf (calcLen decodeStream) lbs
]
where
text = TL.pack $ concat $ replicate 10 ['\27'..'\2003']
lbs = encodeLazy text
main :: IO ()
main = defaultMain $ map handleEncoding
[ ("UTF-8", TLE.encodeUtf8, TLE.decodeUtf8, decodeUtf8)
, ("UTF-8 pure", TLE.encodeUtf8, TLE.decodeUtf8, decodeUtf8Pure)
, ("UTF-16LE", TLE.encodeUtf16LE, TLE.decodeUtf16LE, decodeUtf16LE)
, ("UTF-16BE", TLE.encodeUtf16BE, TLE.decodeUtf16BE, decodeUtf16BE)
, ("UTF-32LE", TLE.encodeUtf32LE, TLE.decodeUtf32LE, decodeUtf32LE)
, ("UTF-32BE", TLE.encodeUtf32BE, TLE.decodeUtf32BE, decodeUtf32BE)
]
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