Safe Haskell	Safe-Inferred
Language	Haskell2010

Servant.API.Description

Contents

Combinators
Used as modifiers

Synopsis

data Description (sym :: Symbol)
data Summary (sym :: Symbol)
type FoldDescription mods = FoldDescription' "" mods
type family FoldDescription' (acc :: Symbol) (mods :: [*]) :: Symbol where ...
reflectDescription :: forall mods. KnownSymbol (FoldDescription mods) => Proxy mods -> String

Combinators

data Description (sym :: Symbol) Source #

Add more verbose description for (part of) API.

Example:

>>> :{
type MyApi = Description
 "This comment is visible in multiple Servant interpretations \
 \and can be really long if necessary. \
 \Haskell multiline String support is not perfect \
 \but it's still very readable."
:> Get '[JSON] Book
:}

Instances

Instances details

HasLink sub => HasLink (Description s :> sub :: Type) Source #
Instance details Defined in Servant.Links Associated Types type MkLink (Description s :> sub) a Source # Methods toLink :: (Link -> a) -> Proxy (Description s :> sub) -> Link -> MkLink (Description s :> sub) a Source #
type MkLink (Description s :> sub :: Type) a Source #
Instance details Defined in Servant.Links type MkLink (Description s :> sub :: Type) a = MkLink sub a

data Summary (sym :: Symbol) Source #

Add a short summary for (part of) API.

Example:

>>> type MyApi = Summary "Get book by ISBN." :> "books" :> Capture "isbn" Text :> Get '[JSON] Book

Instances

Instances details

HasLink sub => HasLink (Summary s :> sub :: Type) Source #
Instance details Defined in Servant.Links Associated Types type MkLink (Summary s :> sub) a Source # Methods toLink :: (Link -> a) -> Proxy (Summary s :> sub) -> Link -> MkLink (Summary s :> sub) a Source #
type MkLink (Summary s :> sub :: Type) a Source #
Instance details Defined in Servant.Links type MkLink (Summary s :> sub :: Type) a = MkLink sub a

Used as modifiers

type FoldDescription mods = FoldDescription' "" mods Source #

Fold list of modifiers to extract description as a type-level String.

>>> :kind! FoldDescription '[]
FoldDescription '[] :: Symbol
= ""

>>> :kind! FoldDescription '[Required, Description "foobar", Lenient]
FoldDescription '[Required, Description "foobar", Lenient] :: Symbol
= "foobar"

type family FoldDescription' (acc :: Symbol) (mods :: [*]) :: Symbol where ... Source #

Implementation of FoldDescription.

Equations

FoldDescription' acc '[] = acc
FoldDescription' acc (Description desc ': mods) = FoldDescription' desc mods
FoldDescription' acc (mod ': mods) = FoldDescription' acc mods

reflectDescription :: forall mods. KnownSymbol (FoldDescription mods) => Proxy mods -> String Source #

Reflect description to the term level.

>>> reflectDescription (Proxy :: Proxy '[Required, Description "foobar", Lenient])
"foobar"