graphql/Data/GraphQL/AST/Core.hs
2017-02-13 15:19:13 -03:00

39 lines
968 B
Haskell

-- | This is the AST meant to be executed.
module Data.GraphQL.AST.Core where
import Data.Int (Int32)
import Data.List.NonEmpty (NonEmpty)
import Data.String
import Data.Text (Text)
type Name = Text
type Document = NonEmpty Operation
data Operation = Query (NonEmpty Field)
| Mutation (NonEmpty Field)
deriving (Eq,Show)
data Field = Field (Maybe Alias) Name [Argument] [Field] deriving (Eq,Show)
type Alias = Name
data Argument = Argument Name Value deriving (Eq,Show)
data Value = ValueInt Int32
-- GraphQL Float is double precision
| ValueFloat Double
| ValueString Text
| ValueBoolean Bool
| ValueNull
| ValueEnum Name
| ValueList [Value]
| ValueObject [ObjectField]
deriving (Eq,Show)
instance IsString Value where
fromString = ValueString . fromString
data ObjectField = ObjectField Name Value deriving (Eq,Show)