typed-encoding-0.5.2.1: Type safe string transformations

Safe HaskellSafe
LanguageHaskell2010

Data.TypedEncoding.Combinators.Promotion

Description

Combinators allowing to add or remove redundant annotations. Such operations are referred to in this package as promoting or demoting.

Synopsis

Documentation

>>> :set -XOverloadedStrings -XMultiParamTypeClasses -XDataKinds -XTypeApplications
>>> import           Data.TypedEncoding.Common.Class.Common (displ)
>>> import           Data.TypedEncoding.Combinators.Unsafe (unsafeSetPayload)
>>> import           Data.TypedEncoding.Instances.Restriction.UTF8 ()
>>> import           Data.TypedEncoding.Instances.Restriction.ASCII ()
>>> import           Data.Text as T

demoteFlattenTop :: forall y x xs c str. IsSuperset y x ~ True => Enc (x ': (y ': xs)) c str -> Enc (x ': xs) c str Source #

Remove redundant superset right after the top (at second last encoding position)

>>> displ $ demoteFlattenTop (unsafeSetPayload () "" :: Enc '["r-ASCII", "r-UTF8", "r-boo"] () T.Text)
"Enc '[r-ASCII,r-boo] () (Text )"

Since: 0.2.2.0

promoteUnFlattenTop :: forall y x xs c str. IsSuperset y x ~ True => Enc (x ': xs) c str -> Enc (x ': (y ': xs)) c str Source #

add redundant superset right after

>>> displ $ promoteUnFlattenTop @"r-UTF8" (unsafeSetPayload () "" :: Enc '["r-ASCII", "r-boo"] () T.Text)
"Enc '[r-ASCII,r-UTF8,r-boo] () (Text )"

Since: 0.2.2.0

demoteRemoveTop :: forall y x xs c str. IsSuperset y x ~ True => Enc (y ': (x ': xs)) c str -> Enc (x ': xs) c str Source #

remove redunant superset from the top (at last applied encoding position)

>>> displ $ demoteRemoveTop (unsafeSetPayload () "" :: Enc '["r-UTF8", "r-ASCII", "r-boo"] () T.Text)
"Enc '[r-ASCII,r-boo] () (Text )"

Since: 0.2.2.0

promoteAddTop :: forall y x xs c str. IsSuperset y x ~ True => Enc (x ': xs) c str -> Enc (y ': (x ': xs)) c str Source #

add redundant superset at the top

>>> displ $ promoteAddTop @"r-UTF8" (unsafeSetPayload () "" :: Enc '["r-ASCII", "r-boo"] () T.Text)
"Enc '[r-UTF8,r-ASCII,r-boo] () (Text )"

Since: 0.2.2.0

demoteRemoveBot :: (UnSnoc xs ~ (,) ys y, UnSnoc ys ~ (,) zs x, IsSuperset y x ~ True) => Enc xs c str -> Enc ys c str Source #

remove redundant superset at bottom (first encoding) position

>>> displ $ demoteRemoveBot (unsafeSetPayload () "" :: Enc '["r-boo", "r-ASCII", "r-UTF8"] () T.Text)
"Enc '[r-boo,r-ASCII] () (Text )"

Since: 0.2.2.0

promoteAddBot :: forall y x xs c str ys. (UnSnoc xs ~ (,) ys x, IsSuperset y x ~ True) => Enc xs c str -> Enc (Snoc xs y) c str Source #

add redundant superset at bottom (first encoding) position

>>> displ $ promoteAddBot @"r-UTF8" (unsafeSetPayload () "" :: Enc '["r-boo", "r-ASCII"] () T.Text)
"Enc '[r-boo,r-ASCII,r-UTF8] () (Text )"

demoteFlattenBot :: (UnSnoc xs ~ (,) ys x, UnSnoc ys ~ (,) zs y, IsSuperset y x ~ True) => Enc xs c str -> Enc (Snoc zs x) c str Source #

remove redundant superset at second bottom (second encoding) position

>>> displ $ demoteFlattenBot (unsafeSetPayload () "" :: Enc '["r-boo", "r-UTF8", "r-ASCII"] () T.Text)
"Enc '[r-boo,r-ASCII] () (Text )"

Since: 0.2.2.0

promoteUnFlattenBot :: forall y x xs c str ys. (UnSnoc xs ~ (,) ys x, IsSuperset y x ~ True) => Enc xs c str -> Enc (Snoc (Snoc ys y) x) c str Source #

add redundant superset at second bottom (second encoding) position

>>> displ $ promoteUnFlattenBot @"r-UTF8" (unsafeSetPayload () "" :: Enc '["r-boo", "r-ASCII"] () T.Text)
"Enc '[r-boo,r-UTF8,r-ASCII] () (Text )"

Since: 0.2.2.0