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author | Joris | 2020-01-30 11:35:31 +0000 |
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committer | Joris | 2020-01-30 11:35:31 +0000 |
commit | 960fa7cb7ae4c57d01306f78cd349f3a8337d0ab (patch) | |
tree | 5077cc720525fb025e4dba65a9a8b631862cbcc8 /src/server/Model/Query.hs | |
parent | 14bdbc8c937f5d0b35c61350dba28cb41c3737cd (diff) | |
parent | 6a04e640955051616c3ad0874605830c448f2d75 (diff) |
Merge branch 'with-ghcjs' into 'master'
Use Haskell on the frontend
See merge request guyonvarch/shared-cost!2
Diffstat (limited to 'src/server/Model/Query.hs')
-rw-r--r-- | src/server/Model/Query.hs | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/src/server/Model/Query.hs b/src/server/Model/Query.hs deleted file mode 100644 index d15fb5f..0000000 --- a/src/server/Model/Query.hs +++ /dev/null @@ -1,32 +0,0 @@ -module Model.Query - ( Query(..) - , run - ) where - -import Data.Functor (Functor) -import Database.SQLite.Simple (Connection) -import qualified Database.SQLite.Simple as SQLite - -data Query a = Query (Connection -> IO a) - -instance Functor Query where - fmap f (Query call) = Query (fmap f . call) - -instance Applicative Query where - pure x = Query (const $ return x) - (Query callF) <*> (Query callX) = Query (\conn -> do - x <- callX conn - f <- callF conn - return (f x)) - -instance Monad Query where - (Query callX) >>= f = Query (\conn -> do - x <- callX conn - case f x of Query callY -> callY conn) - -run :: Query a -> IO a -run (Query call) = do - conn <- SQLite.open "database" - result <- call conn - _ <- SQLite.close conn - return result |