| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Generics.SOP.GGP
Description
Derive generics-sop boilerplate instances from GHC's Generic.
The technique being used here is described in the following paper:
- José Pedro Magalhães and Andres Löh. Generic Generic Programming. Practical Aspects of Declarative Languages (PADL) 2014.
- type GCode a = ToSumCode (Rep a) []
- type GFrom a = GSumFrom (Rep a)
- type GTo a = GSumTo (Rep a)
- type GDatatypeInfo a = GDatatypeInfo' (Rep a)
- gfrom :: (GFrom a, Generic a) => a -> SOP I (GCode a)
- gto :: forall a. (GTo a, Generic a) => SOP I (GCode a) -> a
- gdatatypeInfo :: forall a. GDatatypeInfo a => Proxy a -> DatatypeInfo (GCode a)
Documentation
type GCode a = ToSumCode (Rep a) [] Source
Compute the SOP code of a datatype.
This requires that Rep is defined, which in turn requires that
the type has a Generic (from module GHC.Generics) instance.
This is the default definition for Code.
For more info, see Generic.
type GDatatypeInfo a = GDatatypeInfo' (Rep a) Source
Constraint for the class that computes gdatatypeInfo.
gfrom :: (GFrom a, Generic a) => a -> SOP I (GCode a) Source
An automatically computed version of from.
This requires that the type being converted has a
Generic (from module GHC.Generics) instance.
This is the default definition for from.
For more info, see Generic.
gto :: forall a. (GTo a, Generic a) => SOP I (GCode a) -> a Source
An automatically computed version of to.
This requires that the type being converted has a
Generic (from module GHC.Generics) instance.
This is the default definition for to.
For more info, see Generic.
gdatatypeInfo :: forall a. GDatatypeInfo a => Proxy a -> DatatypeInfo (GCode a) Source
An automatically computed version of datatypeInfo.
This requires that the type being converted has a
Generic (from module GHC.Generics) instance.
This is the default definition for datatypeInfo.
For more info, see HasDatatypeInfo.