{-# LANGUAGE GeneralizedNewtypeDeriving #-}
module Database.Relational.Monad.Trans.Qualify (
Qualify, qualify,
evalQualifyPrime, qualifyQuery
) where
import Control.Monad.Trans.Class (lift)
import Control.Monad.Trans.State (StateT, runStateT, get, modify)
import Control.Applicative (Applicative)
import Control.Monad (liftM, ap)
import qualified Database.Relational.SqlSyntax as Syntax
newtype Qualify m a =
Qualify (StateT Int m a)
deriving (forall a. a -> Qualify m a
forall a b. Qualify m a -> Qualify m b -> Qualify m b
forall a b. Qualify m a -> (a -> Qualify m b) -> Qualify m b
forall {m :: * -> *}. Monad m => Applicative (Qualify m)
forall (m :: * -> *) a. Monad m => a -> Qualify m a
forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> Qualify m b -> Qualify m b
forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> (a -> Qualify m b) -> Qualify m b
forall (m :: * -> *).
Applicative m
-> (forall a b. m a -> (a -> m b) -> m b)
-> (forall a b. m a -> m b -> m b)
-> (forall a. a -> m a)
-> Monad m
return :: forall a. a -> Qualify m a
$creturn :: forall (m :: * -> *) a. Monad m => a -> Qualify m a
>> :: forall a b. Qualify m a -> Qualify m b -> Qualify m b
$c>> :: forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> Qualify m b -> Qualify m b
>>= :: forall a b. Qualify m a -> (a -> Qualify m b) -> Qualify m b
$c>>= :: forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> (a -> Qualify m b) -> Qualify m b
Monad, forall a b. a -> Qualify m b -> Qualify m a
forall a b. (a -> b) -> Qualify m a -> Qualify m b
forall (m :: * -> *) a b.
Functor m =>
a -> Qualify m b -> Qualify m a
forall (m :: * -> *) a b.
Functor m =>
(a -> b) -> Qualify m a -> Qualify m b
forall (f :: * -> *).
(forall a b. (a -> b) -> f a -> f b)
-> (forall a b. a -> f b -> f a) -> Functor f
<$ :: forall a b. a -> Qualify m b -> Qualify m a
$c<$ :: forall (m :: * -> *) a b.
Functor m =>
a -> Qualify m b -> Qualify m a
fmap :: forall a b. (a -> b) -> Qualify m a -> Qualify m b
$cfmap :: forall (m :: * -> *) a b.
Functor m =>
(a -> b) -> Qualify m a -> Qualify m b
Functor, forall a. a -> Qualify m a
forall a b. Qualify m a -> Qualify m b -> Qualify m a
forall a b. Qualify m a -> Qualify m b -> Qualify m b
forall a b. Qualify m (a -> b) -> Qualify m a -> Qualify m b
forall a b c.
(a -> b -> c) -> Qualify m a -> Qualify m b -> Qualify m c
forall {m :: * -> *}. Monad m => Functor (Qualify m)
forall (m :: * -> *) a. Monad m => a -> Qualify m a
forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> Qualify m b -> Qualify m a
forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> Qualify m b -> Qualify m b
forall (m :: * -> *) a b.
Monad m =>
Qualify m (a -> b) -> Qualify m a -> Qualify m b
forall (m :: * -> *) a b c.
Monad m =>
(a -> b -> c) -> Qualify m a -> Qualify m b -> Qualify m c
forall (f :: * -> *).
Functor f
-> (forall a. a -> f a)
-> (forall a b. f (a -> b) -> f a -> f b)
-> (forall a b c. (a -> b -> c) -> f a -> f b -> f c)
-> (forall a b. f a -> f b -> f b)
-> (forall a b. f a -> f b -> f a)
-> Applicative f
<* :: forall a b. Qualify m a -> Qualify m b -> Qualify m a
$c<* :: forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> Qualify m b -> Qualify m a
*> :: forall a b. Qualify m a -> Qualify m b -> Qualify m b
$c*> :: forall (m :: * -> *) a b.
Monad m =>
Qualify m a -> Qualify m b -> Qualify m b
liftA2 :: forall a b c.
(a -> b -> c) -> Qualify m a -> Qualify m b -> Qualify m c
$cliftA2 :: forall (m :: * -> *) a b c.
Monad m =>
(a -> b -> c) -> Qualify m a -> Qualify m b -> Qualify m c
<*> :: forall a b. Qualify m (a -> b) -> Qualify m a -> Qualify m b
$c<*> :: forall (m :: * -> *) a b.
Monad m =>
Qualify m (a -> b) -> Qualify m a -> Qualify m b
pure :: forall a. a -> Qualify m a
$cpure :: forall (m :: * -> *) a. Monad m => a -> Qualify m a
Applicative)
evalQualifyPrime :: Monad m => Qualify m a -> m a
evalQualifyPrime :: forall (m :: * -> *) a. Monad m => Qualify m a -> m a
evalQualifyPrime (Qualify StateT Int m a
s) = forall a b. (a, b) -> a
fst forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
`liftM` forall s (m :: * -> *) a. StateT s m a -> s -> m (a, s)
runStateT StateT Int m a
s Int
0
newAlias :: Monad m => Qualify m Syntax.Qualifier
newAlias :: forall (m :: * -> *). Monad m => Qualify m Qualifier
newAlias = forall (m :: * -> *) a. StateT Int m a -> Qualify m a
Qualify forall a b. (a -> b) -> a -> b
$ do
Qualifier
ai <- Int -> Qualifier
Syntax.Qualifier forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
`liftM` forall (m :: * -> *) s. Monad m => StateT s m s
get
forall (m :: * -> *) s. Monad m => (s -> s) -> StateT s m ()
modify (forall a. Num a => a -> a -> a
+ Int
1)
forall (m :: * -> *) a. Monad m => a -> m a
return Qualifier
ai
qualify :: Monad m => m a -> Qualify m a
qualify :: forall (m :: * -> *) a. Monad m => m a -> Qualify m a
qualify = forall (m :: * -> *) a. StateT Int m a -> Qualify m a
Qualify forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall (t :: (* -> *) -> * -> *) (m :: * -> *) a.
(MonadTrans t, Monad m) =>
m a -> t m a
lift
qualifyQuery :: Monad m
=> query
-> Qualify m (Syntax.Qualified query)
qualifyQuery :: forall (m :: * -> *) query.
Monad m =>
query -> Qualify m (Qualified query)
qualifyQuery query
query =
forall a. Qualifier -> a -> Qualified a
Syntax.qualify forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
`liftM` forall (m :: * -> *). Monad m => Qualify m Qualifier
newAlias forall (m :: * -> *) a b. Monad m => m (a -> b) -> m a -> m b
`ap` forall (m :: * -> *) a. Monad m => a -> m a
return query
query