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RInsert.purs
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RInsert.purs
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module Data.Struct.Insert.RInsert
( class RInsert
, rinsert
) where
import Data.Symbol (class IsSymbol, SProxy(SProxy))
import Data.Variant (Variant)
import Data.Variant (inj) as Variant
import Record (insert) as Record
import Record.Builder (Builder)
import Record.Builder (insert) as Builder
import Type.Proxying
( class RLProxying
, class RProxying
, class SProxying
, rProxy
)
import Type.Row (class Cons, class Lacks, kind RowList)
class RInsert
(p :: Type -> Type -> Type)
(f :: # Type -> Type)
(g :: Symbol -> Type)
(s :: Symbol)
(l0 :: RowList)
(r0 :: # Type)
(l1 :: RowList)
(r1 :: # Type)
| l0 -> r0
, l1 -> r1
where
rinsert
:: forall h v
. Cons s v r0 r1
=> Lacks s r0
=> RLProxying h l0
=> RLProxying h l1
=> h l0
-> h l1
-> g s
-> v
-> p (f r0) (f r1)
instance rinsertBuilder
:: ( IsSymbol s
, SProxying g s
)
=> RInsert Builder Record g s l0 r0 l1 r1
where
rinsert _ _ _ = Builder.insert (SProxy :: SProxy s)
instance rinsertRecord
:: ( IsSymbol s
, SProxying g s
)
=> RInsert Function Record g s l0 r0 l1 r1
where
rinsert _ _ _ = Record.insert (SProxy :: SProxy s)
else instance rinsertVariant
:: ( IsSymbol s
, SProxying g s
)
=> RInsert Function Variant g s l0 r0 l1 r1
where
rinsert _ _ _ v _ = Variant.inj (SProxy :: SProxy s) v
else instance rinsertRProxying
:: RProxying f r1
=> RInsert Function f g s l0 r0 l1 r1
where
rinsert _ _ _ _ _ = rProxy