| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Strongweak.Generic.Strengthen
Description
The generic derivation is split into 3 classes, dealing with different layers of a Haskell data type: datatype, constructor and selector. At each point, we gather up information about the type and push on. Strengthening occurs at selectors. If a strengthening fails, the gathered information is pushed into an error that wraps the original error.
Synopsis
- strengthenGeneric :: (Generic w, Generic s, GStrengthenD (Rep w) (Rep s)) => w -> Validation (NonEmpty StrengthenError) s
- class GStrengthenD w s where
- gstrengthenD :: w p -> Validation (NonEmpty StrengthenError) (s p)
- class GStrengthenC w s where
- gstrengthenC :: String -> String -> w p -> Validation (NonEmpty StrengthenError) (s p)
- class GStrengthenS w s where
- gstrengthenS :: String -> String -> String -> String -> w p -> Validation (NonEmpty StrengthenError) (s p)
- conName' :: forall c. Constructor c => String
- datatypeName' :: forall d. Datatype d => String
- selName' :: forall s. Selector s => String
Documentation
strengthenGeneric :: (Generic w, Generic s, GStrengthenD (Rep w) (Rep s)) => w -> Validation (NonEmpty StrengthenError) s Source #
class GStrengthenD w s where Source #
Methods
gstrengthenD :: w p -> Validation (NonEmpty StrengthenError) (s p) Source #
Instances
| (GStrengthenC w s, Datatype dw, Datatype ds) => GStrengthenD (D1 dw w :: k -> Type) (D1 ds s :: k -> Type) Source # | |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenD :: forall (p :: k0). D1 dw w p -> Validation (NonEmpty StrengthenError) (D1 ds s p) Source # | |
class GStrengthenC w s where Source #
Methods
gstrengthenC :: String -> String -> w p -> Validation (NonEmpty StrengthenError) (s p) Source #
Instances
| GStrengthenC (V1 :: k -> Type) (V1 :: k -> Type) Source # | Nothing to do for empty datatypes. |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenC :: forall (p :: k0). String -> String -> V1 p -> Validation (NonEmpty StrengthenError) (V1 p) Source # | |
| (GStrengthenC lw ls, GStrengthenC rw rs) => GStrengthenC (lw :+: rw :: k -> Type) (ls :+: rs :: k -> Type) Source # | Strengthen sum types by strengthening left or right. |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenC :: forall (p :: k0). String -> String -> (lw :+: rw) p -> Validation (NonEmpty StrengthenError) ((ls :+: rs) p) Source # | |
| (GStrengthenS w s, Constructor cw, Constructor cs) => GStrengthenC (C1 cw w :: k -> Type) (C1 cs s :: k -> Type) Source # | |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenC :: forall (p :: k0). String -> String -> C1 cw w p -> Validation (NonEmpty StrengthenError) (C1 cs s p) Source # | |
class GStrengthenS w s where Source #
Methods
gstrengthenS :: String -> String -> String -> String -> w p -> Validation (NonEmpty StrengthenError) (s p) Source #
Instances
| GStrengthenS (U1 :: k -> Type) (U1 :: k -> Type) Source # | Nothing to do for empty constructors. |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenS :: forall (p :: k0). String -> String -> String -> String -> U1 p -> Validation (NonEmpty StrengthenError) (U1 p) Source # | |
| (GStrengthenS lw ls, GStrengthenS rw rs) => GStrengthenS (lw :*: rw :: k -> Type) (ls :*: rs :: k -> Type) Source # | Strengthen product types by strengthening left, then right. |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenS :: forall (p :: k0). String -> String -> String -> String -> (lw :*: rw) p -> Validation (NonEmpty StrengthenError) ((ls :*: rs) p) Source # | |
| (Strengthen w s, Selector mw, Selector ms) => GStrengthenS (S1 mw (Rec0 w) :: k -> Type) (S1 ms (Rec0 s) :: k -> Type) Source # | Strengthen a field using the existing |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenS :: forall (p :: k0). String -> String -> String -> String -> S1 mw (Rec0 w) p -> Validation (NonEmpty StrengthenError) (S1 ms (Rec0 s) p) Source # | |
| GStrengthenS (S1 mw (Rec0 w) :: k -> Type) (S1 ms (Rec0 w) :: k -> Type) Source # | Special case: if source and target types are equal, copy the value through. |
Defined in Strongweak.Generic.Strengthen Methods gstrengthenS :: forall (p :: k0). String -> String -> String -> String -> S1 mw (Rec0 w) p -> Validation (NonEmpty StrengthenError) (S1 ms (Rec0 w) p) Source # | |
conName' :: forall c. Constructor c => String Source #
datatypeName' :: forall d. Datatype d => String Source #
datatypeName without the value (only used as a proxy). Lets us push our
undefineds into one place.