{-# OPTIONS_HADDOCK show-extensions #-}

-- |
-- Module      :  Yi.Keymap.Vim.Ex.Commands.Cabal
-- License     :  GPL-2
-- Maintainer  :  yi-devel@googlegroups.com
-- Stability   :  experimental
-- Portability :  portable

module Yi.Keymap.Vim.Ex.Commands.Cabal (parse) where

import           Control.Applicative              (Alternative ((<|>)))
import           Control.Monad                    (void)
import qualified Data.Text                        as T (pack)
import qualified Text.ParserCombinators.Parsec    as P (string, try)
import           Yi.Command                       (cabalBuildE)
import           Yi.Keymap                        (Action (YiA))
import           Yi.Keymap.Vim.Common             (EventString)
import qualified Yi.Keymap.Vim.Ex.Commands.Common as Common (commandArgs, impureExCommand, parse)
import           Yi.Keymap.Vim.Ex.Types           (ExCommand (cmdAction, cmdShow))
import           Yi.MiniBuffer                    (CommandArguments (CommandArguments))

-- TODO: Either hack Text into these parsec parsers or use Attoparsec.
-- Attoparsec is faster anyway and backtracks by default so we may
-- want to use that anyway.

parse :: EventString -> Maybe ExCommand
parse = Common.parse $ do
    void $ P.try (P.string "cabal build") <|> P.try (P.string "cabal")
    args <- Common.commandArgs
    return $ Common.impureExCommand {
        cmdShow = T.pack "cabal build"
      , cmdAction = YiA $ cabalBuildE $ CommandArguments args
      }