{- |
Module      :  Neovim.Util
Description :  Utility functions
Copyright   :  (c) Sebastian Witte
License     :  Apache-2.0

Maintainer  :  woozletoff@gmail.com
Stability   :  experimental
Portability :  GHC
-}
module Neovim.Util (
    whenM,
    unlessM,
    oneLineErrorMessage,
) where

import Control.Monad (unless, when)
import qualified Data.Text as T
import Neovim.Context

-- | 'when' with a monadic predicate.
whenM :: (Monad m) => m Bool -> m () -> m ()
whenM mp a = mp >>= \p -> when p a

-- | 'unless' with a monadic predicate.
unlessM :: (Monad m) => m Bool -> m () -> m ()
unlessM mp a = mp >>= \p -> unless p a

oneLineErrorMessage :: Doc AnsiStyle -> T.Text
oneLineErrorMessage d = case T.lines $ docToText d of
    (x : _) -> x
    [] -> mempty