Buffer -> Hack.Buffer

1 files changed, 0 insertions, 108 deletions

diff --git a/src/Buffer/Motion.hs b/src/Buffer/Motion.hs
deleted file mode 100644
index b07a45c..0000000
--- a/src/Buffer/Motion.hs
+++ /dev/null
@@ -1,108 +0,0 @@
-module Buffer.Motion where
-
-import Data.List (dropWhileEnd)
-import Buffer.Class
-
--- TODO factor Count
--- TODO various Vim gX
-data Motion
-  = CharsBackward
-  | CharsForward
-  | ToStartOfLine
-  -- | GotoFirstNonBlankChar
-  | ToEndOfLine             -- XXX in Vi this can go downwards
-  | ToColumn
-  -- | GotoFindLeft (Char -> Bool)   -- TODO don't use functions here
-  -- | GotoFindRight (Char -> Bool)  -- TODO ^ dto.
-  -- | GotillFindLeft Char
-  -- | GotillFindRight Char
-  -- | RepeatLastFind
-  -- | RepeatLastFindReverse
-  | WordsForward
-  | WordsBackward
-  deriving (Show)
-
-
--- TODO fail if cannot splitAt properly OR if we didn't modify the buffer
-gotoLeft :: Int -> Buffer -> Buffer
-gotoLeft i (ls, rs) =
-  let (lls, rls) = splitAt (length ls - i) ls in (lls, rls ++ rs)
-
-
--- TODO fail if cannot splitAt properly OR if we didn't modify the buffer
-gotoRight :: Int -> Buffer -> Buffer
-gotoRight i (ls, rs) =
-  let (lrs, rrs) = splitAt i rs in (ls ++ lrs, rrs)
-
-
-gotoFirstChar :: Buffer -> Buffer
-gotoFirstChar (ls, rs) = ("", ls ++ rs)
-
-
-gotoEndOfLine :: Buffer -> Buffer
-gotoEndOfLine (ls, rs) = (ls ++ rs, "")
-
-
--- TODO fail if i <= 0 or i > length
-gotoColumn :: Int -> Buffer -> Buffer
-gotoColumn i (ls, rs) = splitAt (i - 1) $ ls ++ rs
-
-
-wordsForward :: Int -> Buffer -> Buffer
-wordsForward i (ls, rs) =
-  let rs' = dropWhile (==' ') $ dropWhile (/=' ') rs
-      ls' = ls ++ take (length rs - length rs') rs
-      b' = (ls', rs')
-  in
-    if i > 1
-      then wordsForward (i - 1) b'
-      else b'
-
-
-wordsBackward :: Int -> Buffer -> Buffer
-wordsBackward i (ls, rs) =
-  let ls' = dropWhileEnd (/=' ') $ dropWhileEnd (==' ') ls
-      rs' = drop (length ls') ls ++ rs
-      b' = (ls', rs')
-  in
-    if i > 1
-      then wordsBackward (i - 1) b'
-      else b'
-
-
-move :: Motion -> Int -> Buffer -> Buffer
-move CharsBackward c = gotoLeft c
-move CharsForward c = gotoRight c
-move ToStartOfLine _ = gotoFirstChar -- TODO use count
-move ToEndOfLine _ = gotoEndOfLine -- TODO use count
-move ToColumn c = gotoColumn c
-move WordsForward c = wordsForward c
-move WordsBackward c = wordsBackward c
-
-
-select :: Motion -> Int -> Buffer -> String
-select x i b =
-    if nls' < nls then take (nls - nls') rs' else
-    if nrs' < nrs then take (nrs - nrs') rs else
-    ""
-  where
-    (ls, rs) = b
-    (ls', rs') = move x i b
-    nls = length ls
-    nls' = length ls'
-    nrs = length rs
-    nrs' = length rs'
-
-
-delete :: Motion -> Int -> Buffer -> Buffer
-delete x i b =
-    ( if nls' < nls then ls' else ls
-    , if nrs' < nrs then rs' else rs
-    )
-  where
-    (ls, rs) = b
-    (ls', rs')= move x i b
-    nls = length ls
-    nls' = length ls'
-    nrs = length rs
-    nrs' = length rs'