module Yi.Keymap.Vim.Ex.Commands.Tag (parse) where
import Control.Applicative
import Control.Monad
import Data.Monoid
import qualified Data.Text as T
import qualified Text.ParserCombinators.Parsec as P
import Yi.Keymap
import Yi.Keymap.Vim.Common
import qualified Yi.Keymap.Vim.Ex.Commands.Common as Common
import Yi.Keymap.Vim.Ex.Types
import Yi.Keymap.Vim.Tag
import Yi.Tag
parse :: EventString -> Maybe ExCommand
parse = Common.parse $ do
void $ P.string "t"
parseTag <|> parseNext
parseTag :: P.GenParser Char () ExCommand
parseTag = do
void $ P.string "a"
void . P.optionMaybe $ P.string "g"
t <- P.optionMaybe $ do
void $ P.many1 P.space
P.many1 P.anyChar
case t of
Nothing -> P.eof >> return (tag Nothing)
Just t' -> return $! tag (Just (Tag (T.pack t')))
parseNext :: P.GenParser Char () ExCommand
parseNext = do
void $ P.string "next"
return next
tag :: Maybe Tag -> ExCommand
tag Nothing = Common.impureExCommand {
cmdShow = "tag"
, cmdAction = YiA unpopTag
, cmdComplete = return ["tag"]
}
tag (Just (Tag t)) = Common.impureExCommand {
cmdShow = "tag " <> t
, cmdAction = YiA $ gotoTag (Tag t) 0 Nothing
, cmdComplete = map ("tag " <>) <$> completeVimTag t
}
next :: ExCommand
next = Common.impureExCommand {
cmdShow = "tnext"
, cmdAction = YiA nextTag
, cmdComplete = return ["tnext"]
}