Safe Haskell	None
Language	Haskell2010

GraphQL.Value

Contents

Names
Objects
Converting to and from Value

Description

Synopsis

type Value = Value' ConstScalar
data Value' scalar
- = ValueScalar' scalar
- | ValueList' (List' scalar)
- | ValueObject' (Object' scalar)
data ConstScalar
type UnresolvedVariableValue = Value' UnresolvedVariableScalar
pattern ValueInt :: Int32 -> Value
pattern ValueFloat :: Double -> Value
pattern ValueBoolean :: Bool -> Value
pattern ValueString :: String -> Value
pattern ValueEnum :: Name -> Value
pattern ValueList :: forall t. List' t -> Value' t
pattern ValueObject :: forall t. Object' t -> Value' t
pattern ValueNull :: Value
toObject :: Value' scalar -> Maybe (Object' scalar)
valueToAST :: Value -> Value
astToVariableValue :: HasCallStack => Value -> Maybe UnresolvedVariableValue
variableValueToAST :: UnresolvedVariableValue -> Value
type List = List' ConstScalar
newtype List' scalar = List' [Value' scalar]
newtype String = String Text
newtype Name = Name {
- unName :: Text
}
newtype NameError = NameError Text
makeName :: Text -> Either NameError Name
type Object = Object' ConstScalar
newtype Object' scalar = Object' (OrderedMap Name (Value' scalar))
type ObjectField = ObjectField' ConstScalar
data ObjectField' scalar where
- pattern ObjectField :: forall t. Name -> Value' t -> ObjectField' t
makeObject :: [ObjectField' scalar] -> Maybe (Object' scalar)
objectFromList :: [(Name, Value' scalar)] -> Maybe (Object' scalar)
objectFromOrderedMap :: OrderedMap Name (Value' scalar) -> Object' scalar
unionObjects :: [Object' scalar] -> Maybe (Object' scalar)
objectFields :: Object' scalar -> [ObjectField' scalar]
class ToValue a where
- toValue :: a -> Value' ConstScalar
class FromValue a where
- fromValue :: Value' ConstScalar -> Either Text a

Documentation

type Value = Value' ConstScalar Source #

A GraphQL value which contains no variables.

data Value' scalar Source #

A GraphQL value. scalar represents the type of scalar that's contained within this value.

Normally, it is one of either ConstScalar (to indicate that there are no variables whatsoever) or VariableScalar (to indicate that there might be some variables).

Constructors

ValueScalar' scalar
ValueList' (List' scalar)
ValueObject' (Object' scalar)

Instances

Functor Value' Source #
Instance details Defined in GraphQL.Internal.Value Methods fmap :: (a -> b) -> Value' a -> Value' b # (<$) :: a -> Value' b -> Value' a #
Foldable Value' Source #
Instance details Defined in GraphQL.Internal.Value Methods fold :: Monoid m => Value' m -> m # foldMap :: Monoid m => (a -> m) -> Value' a -> m # foldr :: (a -> b -> b) -> b -> Value' a -> b # foldr' :: (a -> b -> b) -> b -> Value' a -> b # foldl :: (b -> a -> b) -> b -> Value' a -> b # foldl' :: (b -> a -> b) -> b -> Value' a -> b # foldr1 :: (a -> a -> a) -> Value' a -> a # foldl1 :: (a -> a -> a) -> Value' a -> a # toList :: Value' a -> [a] # null :: Value' a -> Bool # length :: Value' a -> Int # elem :: Eq a => a -> Value' a -> Bool # maximum :: Ord a => Value' a -> a # minimum :: Ord a => Value' a -> a # sum :: Num a => Value' a -> a # product :: Num a => Value' a -> a #
Traversable Value' Source #
Instance details Defined in GraphQL.Internal.Value Methods traverse :: Applicative f => (a -> f b) -> Value' a -> f (Value' b) # sequenceA :: Applicative f => Value' (f a) -> f (Value' a) # mapM :: Monad m => (a -> m b) -> Value' a -> m (Value' b) # sequence :: Monad m => Value' (m a) -> m (Value' a) #
Eq scalar => Eq (Value' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods (==) :: Value' scalar -> Value' scalar -> Bool # (/=) :: Value' scalar -> Value' scalar -> Bool #
Ord scalar => Ord (Value' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods compare :: Value' scalar -> Value' scalar -> Ordering # (<) :: Value' scalar -> Value' scalar -> Bool # (<=) :: Value' scalar -> Value' scalar -> Bool # (>) :: Value' scalar -> Value' scalar -> Bool # (>=) :: Value' scalar -> Value' scalar -> Bool # max :: Value' scalar -> Value' scalar -> Value' scalar # min :: Value' scalar -> Value' scalar -> Value' scalar #
Show scalar => Show (Value' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods showsPrec :: Int -> Value' scalar -> ShowS # show :: Value' scalar -> String # showList :: [Value' scalar] -> ShowS #
Arbitrary scalar => Arbitrary (Value' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods arbitrary :: Gen (Value' scalar) # shrink :: Value' scalar -> [Value' scalar] #
ToJSON scalar => ToJSON (Value' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods toJSON :: Value' scalar -> Value # toEncoding :: Value' scalar -> Encoding # toJSONList :: [Value' scalar] -> Value # toEncodingList :: [Value' scalar] -> Encoding #
ToValue (Value' ConstScalar) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Value' ConstScalar -> Value' ConstScalar Source #

data ConstScalar Source #

A non-variable value which contains no other values.

Instances

Eq ConstScalar Source #
Instance details Defined in GraphQL.Internal.Value Methods (==) :: ConstScalar -> ConstScalar -> Bool # (/=) :: ConstScalar -> ConstScalar -> Bool #
Ord ConstScalar Source #
Instance details Defined in GraphQL.Internal.Value Methods compare :: ConstScalar -> ConstScalar -> Ordering # (<) :: ConstScalar -> ConstScalar -> Bool # (<=) :: ConstScalar -> ConstScalar -> Bool # (>) :: ConstScalar -> ConstScalar -> Bool # (>=) :: ConstScalar -> ConstScalar -> Bool # max :: ConstScalar -> ConstScalar -> ConstScalar # min :: ConstScalar -> ConstScalar -> ConstScalar #
Show ConstScalar Source #
Instance details Defined in GraphQL.Internal.Value Methods showsPrec :: Int -> ConstScalar -> ShowS # show :: ConstScalar -> String # showList :: [ConstScalar] -> ShowS #
Arbitrary ConstScalar Source #	Generate an arbitrary scalar value.
Instance details Defined in GraphQL.Internal.Value Methods arbitrary :: Gen ConstScalar # shrink :: ConstScalar -> [ConstScalar] #
ToJSON ConstScalar Source #
Instance details Defined in GraphQL.Internal.Value Methods toJSON :: ConstScalar -> Value # toEncoding :: ConstScalar -> Encoding # toJSONList :: [ConstScalar] -> Value # toEncodingList :: [ConstScalar] -> Encoding #
ToValue List Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: List -> Value' ConstScalar Source #
ToValue (Object' ConstScalar) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Object' ConstScalar -> Value' ConstScalar Source #
ToValue (Value' ConstScalar) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Value' ConstScalar -> Value' ConstScalar Source #

type UnresolvedVariableValue = Value' UnresolvedVariableScalar Source #

A GraphQL value which might contain some variables. These variables are not yet associated with <https://facebook.github.io/graphql/#VariableDefinition variable definitions> (see also VariableDefinition), which are provided in a different context.

pattern ValueInt :: Int32 -> Value Source #

pattern ValueFloat :: Double -> Value Source #

pattern ValueBoolean :: Bool -> Value Source #

pattern ValueString :: String -> Value Source #

pattern ValueEnum :: Name -> Value Source #

pattern ValueList :: forall t. List' t -> Value' t Source #

pattern ValueObject :: forall t. Object' t -> Value' t Source #

pattern ValueNull :: Value Source #

toObject :: Value' scalar -> Maybe (Object' scalar) Source #

If a value is an object, return just that. Otherwise Nothing.

valueToAST :: Value -> Value Source #

Convert a value to an AST value.

astToVariableValue :: HasCallStack => Value -> Maybe UnresolvedVariableValue Source #

Convert an AST value to a variable value.

Will fail if the AST value contains duplicate object fields, or is otherwise invalid.

variableValueToAST :: UnresolvedVariableValue -> Value Source #

Convert a variable value to an AST value.

type List = List' ConstScalar Source #

A list of values that are known to be constants.

Note that this list might not be valid GraphQL, because GraphQL only allows homogeneous lists (i.e. all elements of the same type), and we do no type checking at this point.

newtype List' scalar Source #

Constructors

List' [Value' scalar]

Instances

Functor List' Source #
Instance details Defined in GraphQL.Internal.Value Methods fmap :: (a -> b) -> List' a -> List' b # (<$) :: a -> List' b -> List' a #
Foldable List' Source #
Instance details Defined in GraphQL.Internal.Value Methods fold :: Monoid m => List' m -> m # foldMap :: Monoid m => (a -> m) -> List' a -> m # foldr :: (a -> b -> b) -> b -> List' a -> b # foldr' :: (a -> b -> b) -> b -> List' a -> b # foldl :: (b -> a -> b) -> b -> List' a -> b # foldl' :: (b -> a -> b) -> b -> List' a -> b # foldr1 :: (a -> a -> a) -> List' a -> a # foldl1 :: (a -> a -> a) -> List' a -> a # toList :: List' a -> [a] # null :: List' a -> Bool # length :: List' a -> Int # elem :: Eq a => a -> List' a -> Bool # maximum :: Ord a => List' a -> a # minimum :: Ord a => List' a -> a # sum :: Num a => List' a -> a # product :: Num a => List' a -> a #
Traversable List' Source #
Instance details Defined in GraphQL.Internal.Value Methods traverse :: Applicative f => (a -> f b) -> List' a -> f (List' b) # sequenceA :: Applicative f => List' (f a) -> f (List' a) # mapM :: Monad m => (a -> m b) -> List' a -> m (List' b) # sequence :: Monad m => List' (m a) -> m (List' a) #
ToValue List Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: List -> Value' ConstScalar Source #
Eq scalar => Eq (List' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods (==) :: List' scalar -> List' scalar -> Bool # (/=) :: List' scalar -> List' scalar -> Bool #
Ord scalar => Ord (List' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods compare :: List' scalar -> List' scalar -> Ordering # (<) :: List' scalar -> List' scalar -> Bool # (<=) :: List' scalar -> List' scalar -> Bool # (>) :: List' scalar -> List' scalar -> Bool # (>=) :: List' scalar -> List' scalar -> Bool # max :: List' scalar -> List' scalar -> List' scalar # min :: List' scalar -> List' scalar -> List' scalar #
Show scalar => Show (List' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods showsPrec :: Int -> List' scalar -> ShowS # show :: List' scalar -> String # showList :: [List' scalar] -> ShowS #
Arbitrary scalar => Arbitrary (List' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods arbitrary :: Gen (List' scalar) # shrink :: List' scalar -> [List' scalar] #
ToJSON scalar => ToJSON (List' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods toJSON :: List' scalar -> Value # toEncoding :: List' scalar -> Encoding # toJSONList :: [List' scalar] -> Value # toEncodingList :: [List' scalar] -> Encoding #

newtype String Source #

Constructors

String Text

Instances

Eq String Source #
Instance details Defined in GraphQL.Internal.Value Methods (==) :: String -> String -> Bool # (/=) :: String -> String -> Bool #
Ord String Source #
Instance details Defined in GraphQL.Internal.Value Methods compare :: String -> String -> Ordering # (<) :: String -> String -> Bool # (<=) :: String -> String -> Bool # (>) :: String -> String -> Bool # (>=) :: String -> String -> Bool # max :: String -> String -> String # min :: String -> String -> String #
Show String Source #
Instance details Defined in GraphQL.Internal.Value Methods showsPrec :: Int -> String -> ShowS # show :: String -> String0 # showList :: [String] -> ShowS #
Arbitrary String Source #
Instance details Defined in GraphQL.Internal.Value Methods arbitrary :: Gen String # shrink :: String -> [String] #
ToJSON String Source #
Instance details Defined in GraphQL.Internal.Value Methods toJSON :: String -> Value # toEncoding :: String -> Encoding # toJSONList :: [String] -> Value # toEncodingList :: [String] -> Encoding #
ToValue String Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: String -> Value' ConstScalar Source #

Names

newtype Name Source #

A name in GraphQL.

https://facebook.github.io/graphql/#sec-Names

Constructors

Name
Fields unName :: Text

Instances

Eq Name Source #
Instance details Defined in GraphQL.Internal.Name Methods (==) :: Name -> Name -> Bool # (/=) :: Name -> Name -> Bool #
Ord Name Source #
Instance details Defined in GraphQL.Internal.Name Methods compare :: Name -> Name -> Ordering # (<) :: Name -> Name -> Bool # (<=) :: Name -> Name -> Bool # (>) :: Name -> Name -> Bool # (>=) :: Name -> Name -> Bool # max :: Name -> Name -> Name # min :: Name -> Name -> Name #
Show Name Source #
Instance details Defined in GraphQL.Internal.Name Methods showsPrec :: Int -> Name -> ShowS # show :: Name -> String # showList :: [Name] -> ShowS #
IsString Name Source #
Instance details Defined in GraphQL.Internal.Name Methods fromString :: String -> Name #
Arbitrary Name Source #
Instance details Defined in GraphQL.Internal.Name Methods arbitrary :: Gen Name # shrink :: Name -> [Name] #
ToJSON Name Source #
Instance details Defined in GraphQL.Internal.Name Methods toJSON :: Name -> Value # toEncoding :: Name -> Encoding # toJSONList :: [Name] -> Value # toEncodingList :: [Name] -> Encoding #

newtype NameError Source #

An invalid name.

Constructors

NameError Text

Instances

Eq NameError Source #
Instance details Defined in GraphQL.Internal.Name Methods (==) :: NameError -> NameError -> Bool # (/=) :: NameError -> NameError -> Bool #
Show NameError Source #
Instance details Defined in GraphQL.Internal.Name Methods showsPrec :: Int -> NameError -> ShowS # show :: NameError -> String # showList :: [NameError] -> ShowS #
GraphQLError NameError Source #
Instance details Defined in GraphQL.Internal.Output Methods formatError :: NameError -> Text Source # toError :: NameError -> Error Source #

makeName :: Text -> Either NameError Name Source #

Create a Name.

Names must match the regex [_A-Za-z][_0-9A-Za-z]*. If the given text does not match, return NameError.

>>> makeName "foo"
Right (Name {unName = "foo"})
>>> makeName "9-bar"
Left (NameError "9-bar")

Objects

type Object = Object' ConstScalar Source #

A GraphQL object that contains only non-variable values.

newtype Object' scalar Source #

A GraphQL object.

Note that https://facebook.github.io/graphql/#sec-Response calls these "Maps", but everywhere else in the spec refers to them as objects.

Constructors

Object' (OrderedMap Name (Value' scalar))

Instances

Functor Object' Source #
Instance details Defined in GraphQL.Internal.Value Methods fmap :: (a -> b) -> Object' a -> Object' b # (<$) :: a -> Object' b -> Object' a #
Foldable Object' Source #
Instance details Defined in GraphQL.Internal.Value Methods fold :: Monoid m => Object' m -> m # foldMap :: Monoid m => (a -> m) -> Object' a -> m # foldr :: (a -> b -> b) -> b -> Object' a -> b # foldr' :: (a -> b -> b) -> b -> Object' a -> b # foldl :: (b -> a -> b) -> b -> Object' a -> b # foldl' :: (b -> a -> b) -> b -> Object' a -> b # foldr1 :: (a -> a -> a) -> Object' a -> a # foldl1 :: (a -> a -> a) -> Object' a -> a # toList :: Object' a -> [a] # null :: Object' a -> Bool # length :: Object' a -> Int # elem :: Eq a => a -> Object' a -> Bool # maximum :: Ord a => Object' a -> a # minimum :: Ord a => Object' a -> a # sum :: Num a => Object' a -> a # product :: Num a => Object' a -> a #
Traversable Object' Source #
Instance details Defined in GraphQL.Internal.Value Methods traverse :: Applicative f => (a -> f b) -> Object' a -> f (Object' b) # sequenceA :: Applicative f => Object' (f a) -> f (Object' a) # mapM :: Monad m => (a -> m b) -> Object' a -> m (Object' b) # sequence :: Monad m => Object' (m a) -> m (Object' a) #
Eq scalar => Eq (Object' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods (==) :: Object' scalar -> Object' scalar -> Bool # (/=) :: Object' scalar -> Object' scalar -> Bool #
Ord scalar => Ord (Object' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods compare :: Object' scalar -> Object' scalar -> Ordering # (<) :: Object' scalar -> Object' scalar -> Bool # (<=) :: Object' scalar -> Object' scalar -> Bool # (>) :: Object' scalar -> Object' scalar -> Bool # (>=) :: Object' scalar -> Object' scalar -> Bool # max :: Object' scalar -> Object' scalar -> Object' scalar # min :: Object' scalar -> Object' scalar -> Object' scalar #
Show scalar => Show (Object' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods showsPrec :: Int -> Object' scalar -> ShowS # show :: Object' scalar -> String # showList :: [Object' scalar] -> ShowS #
Arbitrary scalar => Arbitrary (Object' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods arbitrary :: Gen (Object' scalar) # shrink :: Object' scalar -> [Object' scalar] #
ToJSON scalar => ToJSON (Object' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods toJSON :: Object' scalar -> Value # toEncoding :: Object' scalar -> Encoding # toJSONList :: [Object' scalar] -> Value # toEncodingList :: [Object' scalar] -> Encoding #
ToValue (Object' ConstScalar) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Object' ConstScalar -> Value' ConstScalar Source #

type ObjectField = ObjectField' ConstScalar Source #

A field of an object that has a non-variable value.

data ObjectField' scalar where Source #

Bundled Patterns

pattern ObjectField :: forall t. Name -> Value' t -> ObjectField' t

Instances

Functor ObjectField' Source #
Instance details Defined in GraphQL.Internal.Value Methods fmap :: (a -> b) -> ObjectField' a -> ObjectField' b # (<$) :: a -> ObjectField' b -> ObjectField' a #
Eq scalar => Eq (ObjectField' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods (==) :: ObjectField' scalar -> ObjectField' scalar -> Bool # (/=) :: ObjectField' scalar -> ObjectField' scalar -> Bool #
Ord scalar => Ord (ObjectField' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods compare :: ObjectField' scalar -> ObjectField' scalar -> Ordering # (<) :: ObjectField' scalar -> ObjectField' scalar -> Bool # (<=) :: ObjectField' scalar -> ObjectField' scalar -> Bool # (>) :: ObjectField' scalar -> ObjectField' scalar -> Bool # (>=) :: ObjectField' scalar -> ObjectField' scalar -> Bool # max :: ObjectField' scalar -> ObjectField' scalar -> ObjectField' scalar # min :: ObjectField' scalar -> ObjectField' scalar -> ObjectField' scalar #
Show scalar => Show (ObjectField' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods showsPrec :: Int -> ObjectField' scalar -> ShowS # show :: ObjectField' scalar -> String # showList :: [ObjectField' scalar] -> ShowS #
Arbitrary scalar => Arbitrary (ObjectField' scalar) Source #
Instance details Defined in GraphQL.Internal.Value Methods arbitrary :: Gen (ObjectField' scalar) # shrink :: ObjectField' scalar -> [ObjectField' scalar] #

Constructing

makeObject :: [ObjectField' scalar] -> Maybe (Object' scalar) Source #

Make an object from a list of object fields.

objectFromList :: [(Name, Value' scalar)] -> Maybe (Object' scalar) Source #

Create an object from a list of (name, value) pairs.

objectFromOrderedMap :: OrderedMap Name (Value' scalar) -> Object' scalar Source #

Make an object from an ordered map.

Combining

unionObjects :: [Object' scalar] -> Maybe (Object' scalar) Source #

Querying

objectFields :: Object' scalar -> [ObjectField' scalar] Source #

Converting to and from Value

class ToValue a where Source #

Turn a Haskell value into a GraphQL value.

Methods

toValue :: a -> Value' ConstScalar Source #

Instances

ToValue Bool Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Bool -> Value' ConstScalar Source #
ToValue Double Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Double -> Value' ConstScalar Source #
ToValue Int32 Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Int32 -> Value' ConstScalar Source #
ToValue Text Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Text -> Value' ConstScalar Source #
ToValue List Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: List -> Value' ConstScalar Source #
ToValue String Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: String -> Value' ConstScalar Source #
ToValue Error Source #
Instance details Defined in GraphQL.Internal.Output Methods toValue :: Error -> Value' ConstScalar Source #
ToValue Response Source #
Instance details Defined in GraphQL.Internal.Output Methods toValue :: Response -> Value' ConstScalar Source #
ToValue a => ToValue [a] Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: [a] -> Value' ConstScalar Source #
ToValue a => ToValue (Maybe a) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Maybe a -> Value' ConstScalar Source #
ToValue a => ToValue (NonEmpty a) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: NonEmpty a -> Value' ConstScalar Source #
ToValue (Object' ConstScalar) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Object' ConstScalar -> Value' ConstScalar Source #
ToValue (Value' ConstScalar) Source #
Instance details Defined in GraphQL.Internal.Value.ToValue Methods toValue :: Value' ConstScalar -> Value' ConstScalar Source #

class FromValue a where Source #

a can be converted from a GraphQL Value to a Haskell value.

The FromValue instance converts Value to the type expected by the handler function. It is the boundary between incoming data and your custom application Haskell types.

FromValue has a generic instance for converting input objects to records.

Minimal complete definition

Nothing

Methods

fromValue :: Value' ConstScalar -> Either Text a Source #

Convert an already-parsed value into a Haskell value, generally to be passed to a handler.

fromValue :: (Generic a, GenericFromValue (Rep a)) => Value' ConstScalar -> Either Text a Source #

Convert an already-parsed value into a Haskell value, generally to be passed to a handler.

Instances

FromValue Bool Source #
Instance details Defined in GraphQL.Internal.Value.FromValue Methods fromValue :: Value' ConstScalar -> Either Text Bool Source #
FromValue Double Source #
Instance details Defined in GraphQL.Internal.Value.FromValue Methods fromValue :: Value' ConstScalar -> Either Text Double Source #
FromValue Int32 Source #
Instance details Defined in GraphQL.Internal.Value.FromValue Methods fromValue :: Value' ConstScalar -> Either Text Int32 Source #
FromValue Text Source #
Instance details Defined in GraphQL.Internal.Value.FromValue Methods fromValue :: Value' ConstScalar -> Either Text Text Source #
FromValue v => FromValue [v] Source #
Instance details Defined in GraphQL.Internal.Value.FromValue Methods fromValue :: Value' ConstScalar -> Either Text [v] Source #
FromValue v => FromValue (Maybe v) Source #
Instance details Defined in GraphQL.Internal.Value.FromValue Methods fromValue :: Value' ConstScalar -> Either Text (Maybe v) Source #
FromValue v => FromValue (NonEmpty v) Source #
Instance details Defined in GraphQL.Internal.Value.FromValue Methods fromValue :: Value' ConstScalar -> Either Text (NonEmpty v) Source #