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author | Joris | 2018-10-28 17:57:58 +0100 |
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committer | Joris | 2018-10-28 17:57:58 +0100 |
commit | 40b4994797a797b1fa86cafda789a5c488730c6d (patch) | |
tree | ad195b31fa442821b9de8f99364e254f0f41935f /server/src/Validation/Atomic.hs | |
parent | df83b634006c699cfa1e921bf74ce951a906a62f (diff) | |
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Diffstat (limited to 'server/src/Validation/Atomic.hs')
-rw-r--r-- | server/src/Validation/Atomic.hs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/server/src/Validation/Atomic.hs b/server/src/Validation/Atomic.hs new file mode 100644 index 0000000..d15ad49 --- /dev/null +++ b/server/src/Validation/Atomic.hs @@ -0,0 +1,32 @@ +module Validation.Atomic + ( nonEmpty + , nonNullNumber + -- , number + ) where + +import Data.Text (Text) +import qualified Data.Text as T + +import qualified Common.Msg as Msg + +nonEmpty :: Text -> Maybe Text +nonEmpty str = + if T.null str + then Just $ Msg.get Msg.Form_NonEmpty + else Nothing + +nonNullNumber :: Int -> Maybe Text +nonNullNumber n = + if n == 0 + then Just $ Msg.get Msg.Form_NonNullNumber + else Nothing + +-- number :: (Int -> Bool) -> Text -> Maybe Int +-- number numberForm str = +-- case reads (T.unpack str) :: [(Int, String)] of +-- (num, _) : _ -> +-- if numberForm num +-- then Just num +-- else Nothing +-- _ -> +-- Nothing |