{-# LANGUAGE NoImplicitPrelude #-}
{-# LANGUAGE StrictData        #-}

{-|
Module      : Headroom.FileSupport.TemplateData
Description : Custom data specific to file support implementations
Copyright   : (c) 2019-2021 Vaclav Svejcar
License     : BSD-3-Clause
Maintainer  : vaclav.svejcar@gmail.com
Stability   : experimental
Portability : POSIX

Because each implementation of file support might require some custom data
extracted for example from the template file, this module exposes data types
specific for individual implementations.
-}

module Headroom.FileSupport.TemplateData
  ( TemplateData(..)
  , HaddockOffsets(..)
  , HaskellTemplateData'(..)
  )
where
import           RIO


-- | Additional template data extracted from the template file.
data TemplateData
  = HaskellTemplateData HaskellTemplateData'
  -- ^ additional template data for /Haskell/
  | NoTemplateData
  -- ^ no additional template data provided
  deriving (Eq, Show)

-- | Offsets for selected fields extracted from /Haddock module header/.
data HaddockOffsets = HaddockOffsets
  { hoCopyright :: Maybe Int
  -- ^ offset for /Copyright/ field
  }
  deriving (Eq, Show)


-- | Additional template data required by /Haskell/ file support
data HaskellTemplateData' = HaskellTemplateData'
  { htdHaddockOffsets :: HaddockOffsets
  -- ^ offsets for /Haddock/ fields
  }
  deriving (Eq, Show)