{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeInType #-}
module Data.GraphQL.Query
( GraphQLQuery(..)
, query
) where
import Data.Aeson (Value)
import Data.Aeson.Schema (IsSchema, Schema)
import Data.Text (Text)
import qualified Data.Text as Text
import Language.Haskell.TH.Quote (QuasiQuoter(..))
import Language.Haskell.TH.Syntax (lift)
class IsSchema (ResultSchema query) => GraphQLQuery query where
type ResultSchema query :: Schema
getQueryName :: query -> Text
getQueryText :: query -> Text
getArgs :: query -> Value
query :: QuasiQuoter
query :: QuasiQuoter
query = QuasiQuoter :: (String -> Q Exp)
-> (String -> Q Pat)
-> (String -> Q Type)
-> (String -> Q [Dec])
-> QuasiQuoter
QuasiQuoter
{ quoteExp :: String -> Q Exp
quoteExp = Text -> Q Exp
liftText (Text -> Q Exp) -> (String -> Text) -> String -> Q Exp
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Text -> Text
Text.strip (Text -> Text) -> (String -> Text) -> String -> Text
forall b c a. (b -> c) -> (a -> b) -> a -> c
. String -> Text
Text.pack
, quotePat :: String -> Q Pat
quotePat = String -> String -> Q Pat
forall a. HasCallStack => String -> a
error String
"Cannot use the 'query' QuasiQuoter for patterns"
, quoteType :: String -> Q Type
quoteType = String -> String -> Q Type
forall a. HasCallStack => String -> a
error String
"Cannot use the 'query' QuasiQuoter for types"
, quoteDec :: String -> Q [Dec]
quoteDec = String -> String -> Q [Dec]
forall a. HasCallStack => String -> a
error String
"Cannot use the 'query' QuasiQuoter for declarations"
}
where
liftText :: Text -> Q Exp
liftText Text
s = [| Text.pack $(lift $ Text.unpack s) |]