mirror of https://github.com/voidlizard/hbs2
65 lines
1.4 KiB
Haskell
65 lines
1.4 KiB
Haskell
module HBS2.Prelude
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( module Data.String
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, module Safe
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, module X
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, MonadIO(..)
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, void, guard, when, unless
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, maybe1
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, eitherToMaybe
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, Hashable
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, lift
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, AsFileName(..)
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-- , Pretty
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, FromStringMaybe(..)
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, none
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, module Prettyprinter
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, ToByteString(..)
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, FromByteString(..)
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, Text.Text
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) where
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import Data.Typeable as X
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import GHC.Generics as X (Generic)
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import Data.ByteString (ByteString)
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import Data.String (IsString(..))
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import Safe
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import Control.Monad.IO.Class (MonadIO(..))
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import Control.Monad (void,guard,when,unless)
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import Control.Monad.Trans.Class (lift)
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import Data.Function
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import Data.Char qualified as Char
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import Data.Text qualified as Text
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import Data.Hashable
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import Prettyprinter
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import Data.Word
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none :: forall m . Monad m => m ()
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none = pure ()
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maybe1 :: Maybe a -> b -> (a -> b) -> b
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maybe1 mb n j = maybe n j mb
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eitherToMaybe :: Either a b -> Maybe b
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eitherToMaybe = either (const Nothing) Just
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newtype AsFileName a = AsFileName a
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instance Pretty a => Pretty (AsFileName a) where
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pretty (AsFileName f) = pretty x <> "@" <> uniq
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where
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uniq = pretty (fromIntegral $ hash (show (pretty f)) :: Word16)
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x = show (pretty f) & Text.pack
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& Text.filter (not . Char.isPunctuation)
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class FromStringMaybe a where
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fromStringMay :: String -> Maybe a
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class ToByteString a where
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toByteString :: a -> ByteString
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class FromByteString a where
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fromByteString :: ByteString -> Maybe a
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