Safe Haskell	None
Language	Haskell2010

Data.Aeson.AutoType.Extract

Description

Extraction and unification of AutoType's Type from Aeson Value.

Synopsis

Documentation

valueSize :: Value -> Int Source #

Compute total number of nodes (and leaves) within the value tree. Each simple JavaScript type (including String) is counted as of size 1, whereas both Array or object types are counted as 1+sum of the sizes of their member values.

valueTypeSize :: Value -> Int Source #

Compute total size of the type of the Value. For: * simple types it is always 1, * for arrays it is just 1+_maximum_ size of the (single) element type, * for objects it is _sum_ of the sizes of fields (since each field type is assumed to be different.)

valueDepth :: Value -> Int Source #

Compute total depth of the value. For: * simple types it is 1 * for either Array or Object, it is 1 + maximum of depths of their members

newtype Dict Source #

Dictionary of types indexed by names.

Constructors

Dict
Fields unDict :: Map Text Type

Instances

Eq Dict Source #
Methods (==) :: Dict -> Dict -> Bool # (/=) :: Dict -> Dict -> Bool #
Data Dict Source #
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Dict -> c Dict # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Dict # toConstr :: Dict -> Constr # dataTypeOf :: Dict -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c Dict) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Dict) # gmapT :: (forall b. Data b => b -> b) -> Dict -> Dict # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Dict -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Dict -> r # gmapQ :: (forall d. Data d => d -> u) -> Dict -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Dict -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Dict -> m Dict # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Dict -> m Dict # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Dict -> m Dict #
Ord Dict Source #
Methods compare :: Dict -> Dict -> Ordering # (<) :: Dict -> Dict -> Bool # (<=) :: Dict -> Dict -> Bool # (>) :: Dict -> Dict -> Bool # (>=) :: Dict -> Dict -> Bool # max :: Dict -> Dict -> Dict # min :: Dict -> Dict -> Dict #
Show Dict Source #
Methods showsPrec :: Int -> Dict -> ShowS # show :: Dict -> String # showList :: [Dict] -> ShowS #
Generic Dict Source #
Associated Types type Rep Dict :: * -> * # Methods from :: Dict -> Rep Dict x # to :: Rep Dict x -> Dict #
Out Dict Source #
Methods docPrec :: Int -> Dict -> Doc # doc :: Dict -> Doc # docList :: [Dict] -> Doc #
type Rep Dict Source #
type Rep Dict

data Type Source #

Union types for JSON values.

Constructors

TNull
TBool
TNum
TString
TUnion (Set Type)
TLabel Text
TObj Dict
TArray Type

Instances

Eq Type Source #
Methods (==) :: Type -> Type -> Bool # (/=) :: Type -> Type -> Bool #
Data Type Source #
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Type -> c Type # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Type # toConstr :: Type -> Constr # dataTypeOf :: Type -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c Type) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Type) # gmapT :: (forall b. Data b => b -> b) -> Type -> Type # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Type -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Type -> r # gmapQ :: (forall d. Data d => d -> u) -> Type -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Type -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Type -> m Type # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Type -> m Type # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Type -> m Type #
Ord Type Source #
Methods compare :: Type -> Type -> Ordering # (<) :: Type -> Type -> Bool # (<=) :: Type -> Type -> Bool # (>) :: Type -> Type -> Bool # (>=) :: Type -> Type -> Bool # max :: Type -> Type -> Type # min :: Type -> Type -> Type #
Show Type Source #
Methods showsPrec :: Int -> Type -> ShowS # show :: Type -> String # showList :: [Type] -> ShowS #
Generic Type Source #
Associated Types type Rep Type :: * -> * # Methods from :: Type -> Rep Type x # to :: Rep Type x -> Type #
Out Type Source #
Methods docPrec :: Int -> Type -> Doc # doc :: Type -> Doc # docList :: [Type] -> Doc #
Uniplate Type Source #
Methods uniplate :: UniplateType Type #
type Rep Type Source #
type Rep Type = D1 * (MetaData "Type" "Data.Aeson.AutoType.Type" "json-autotype-1.1.2-CeSfnUXbse2KSFjyJZrRH4" False) ((:+:) * ((:+:) * ((:+:) * (C1 * (MetaCons "TNull" PrefixI False) (U1 )) (C1 (MetaCons "TBool" PrefixI False) (U1 ))) ((:+:) (C1 * (MetaCons "TNum" PrefixI False) (U1 )) (C1 (MetaCons "TString" PrefixI False) (U1 )))) ((:+:) ((:+:) * (C1 * (MetaCons "TUnion" PrefixI False) (S1 * (MetaSel (Nothing Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 * (Set Type)))) (C1 * (MetaCons "TLabel" PrefixI False) (S1 * (MetaSel (Nothing Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 * Text)))) ((:+:) * (C1 * (MetaCons "TObj" PrefixI False) (S1 * (MetaSel (Nothing Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 * Dict))) (C1 * (MetaCons "TArray" PrefixI False) (S1 * (MetaSel (Nothing Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 * Type))))))

emptyType :: Type Source #

Empty type

extractType :: Value -> Type Source #

Extract Type from the JSON Value. Unifying types of array elements, if necessary.

unifyTypes :: Type -> Type -> Type Source #

Standard unification procedure on Types, with inclusion of Type unions.

typeCheck :: Value -> Type -> Bool Source #

Type check the value with the derived type.