module Sqel.Data.Order where

import Sqel.Data.Sql (ToSql (toSql), sql)

data Order =
  Asc
  |
  Desc
  |
  Using Text
  deriving stock (Order -> Order -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: Order -> Order -> Bool
$c/= :: Order -> Order -> Bool
== :: Order -> Order -> Bool
$c== :: Order -> Order -> Bool
Eq, Int -> Order -> ShowS
[Order] -> ShowS
Order -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [Order] -> ShowS
$cshowList :: [Order] -> ShowS
show :: Order -> String
$cshow :: Order -> String
showsPrec :: Int -> Order -> ShowS
$cshowsPrec :: Int -> Order -> ShowS
Show, forall x. Rep Order x -> Order
forall x. Order -> Rep Order x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep Order x -> Order
$cfrom :: forall x. Order -> Rep Order x
Generic)

instance ToSql Order where
  toSql :: Order -> Sql
toSql = \case
    Order
Asc -> Sql
"asc"
    Order
Desc -> Sql
"desc"
    Using Text
expr -> [sql|using ##{expr}|]