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fanReqResult (and tagged alternative)

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Marco Toniut 2019-01-09 21:34:19 -03:00
parent 9a3b58cdc7
commit f6d2b36f06
1 changed files with 21 additions and 0 deletions
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21
src/Servant/Common/Req.hs
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@ -12,6 +12,7 @@ module Servant.Common.Req where
-------------------------------------------------------------------------------
import Control.Applicative (liftA2, liftA3)
import Control.Arrow ((&&&))
import Control.Concurrent
import Control.Monad (join)
import Control.Monad.IO.Class (MonadIO, liftIO)
@ -91,6 +92,13 @@ reqFailure (ResponseFailure _ s _) = Just s
reqFailure (RequestFailure _ s) = Just s
reqFailure _ = Nothing
------------------------------------------------------------------------------
-- | Simple filter/accessor like 'reqFailure', but keeping the request tag
reqFailure' :: ReqResult tag a -> Maybe (tag,Text)
reqFailure' (ResponseFailure tag s _) = Just (tag,s)
reqFailure' (RequestFailure tag s) = Just (tag,s)
reqFailure' _ = Nothing
------------------------------------------------------------------------------
-- | Simple filter/accessor for the raw XHR response
@ -394,6 +402,18 @@ evalResponse decode (tag, xhr) =
else ResponseFailure tag errMsg xhr
in respPayld
------------------------------------------------------------------------------
-- | Utility for simultaneously accessing/filtering Success and Failure
-- response 'Event's,
fanReqResult :: Reflex t => Event t (ReqResult tag a) -> (Event t Text, Event t a)
fanReqResult = fmapMaybe reqFailure &&& fmapMaybe reqSuccess
------------------------------------------------------------------------------
-- | Utility for simultaneously accessing/filtering Success and Failure
-- response 'Event's, but keeping the request tag
fanReqResult' :: Reflex t => Event t (ReqResult tag a) -> (Event t (tag, Text), Event t (tag, a))
fanReqResult' = fmapMaybe reqFailure' &&& fmapMaybe reqSuccess'
note :: e -> Maybe a -> Either e a
note e = maybe (Left e) Right
@ -407,3 +427,4 @@ builderToText = TE.decodeUtf8 . BL.toStrict . Builder.toLazyByteString
escape :: T.Text -> T.Text
escape = T.pack . N.escapeURIString (not . N.isReserved) . T.unpack . TE.decodeUtf8 . BL.toStrict . Builder.toLazyByteString . toEncodedUrlPiece