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Properly recurse into :*: #178

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Merged
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Aug 13, 2018
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Properly recurse into :*: #178

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15 changes: 6 additions & 9 deletions src/GraphQL/Internal/Value/FromValue.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -100,15 +100,12 @@ instance forall dataName consName records s l p.
)) where
genericFromValue o = M1 . M1 <$> genericFromValue @records o

instance forall wrappedType fieldName rest u s l.
( KnownSymbol fieldName
, FromValue wrappedType
, GenericFromValue rest
) => GenericFromValue (S1 ('MetaSel ('Just fieldName) u s l) (Rec0 wrappedType) :*: rest) where
genericFromValue object = do
l <- getValue @wrappedType @fieldName object
r <- genericFromValue @rest object
pure (l :*: r)

instance forall l r.
( GenericFromValue l
, GenericFromValue r
) => GenericFromValue (l :*: r) where
genericFromValue object = liftA2 (:*:) (genericFromValue @l object) (genericFromValue @r object)

-- | Look up a single record field element in the Object.
getValue :: forall wrappedType fieldName u s l p. (FromValue wrappedType, KnownSymbol fieldName)
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