GitSubject.hs

{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -Wall #-}

{- | The name @gitSubject@, targeting 'String': the subject of a commit.

Any value of the target type has the name, as the identity.

@since 0.2.0.0
-}
module Document.Build.Name.GitSubject (
  GitSubjectLike (..),
) where

import Control.Lens (Optic)

{- | A field or a constructor named @gitSubject@.

@since 0.2.0.0
-}
class GitSubjectLike p f x x' where
  gitSubject ::
    Optic p f x x' String String

{- | Identity

@since 0.2.0.0
-}
instance (x' ~ String) => GitSubjectLike p f String x' where
  gitSubject =
    id
  {-# INLINE gitSubject #-}