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Generalize the leaf type again (via a type family in TermContainer).

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This commit is contained in:
Rob Rix 2015-12-29 10:07:33 -05:00
parent 09dae76194
commit 99220ba440
1 changed files with 16 additions and 10 deletions
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26
src/Split.hs
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@ -27,7 +27,7 @@ type ClassName = String
classifyMarkup :: Foldable f => f String -> Markup -> Markup
classifyMarkup categories element = maybe element ((element !) . A.class_ . stringValue . ("category-" ++)) $ maybeFirst categories
split :: Diff String Info -> Source Char -> Source Char -> IO ByteString
split :: Diff leaf Info -> Source Char -> Source Char -> IO ByteString
split diff before after = return . renderHtml
. docTypeHtml
. ((head $ link ! A.rel (stringValue "stylesheet") ! A.href (stringValue "style.css")) <>)
@ -90,7 +90,7 @@ instance ToMarkup (Renderable (SplitDiff a Info)) where
where toMarkupAndRange :: Term a Info -> (Markup, Range)
toMarkupAndRange term@(Info range _ :< _) = ((div ! A.class_ (stringValue "patch")) . toMarkup $ Renderable (source, term), range)
splitDiffByLines :: Diff String Info -> (Int, Int) -> (Source Char, Source Char) -> ([Row (SplitDiff String Info)], (Range, Range))
splitDiffByLines :: Eq leaf => Diff leaf Info -> (Int, Int) -> (Source Char, Source Char) -> ([Row (SplitDiff leaf Info)], (Range, Range))
splitDiffByLines diff (prevLeft, prevRight) sources = case diff of
Free (Annotated annotation syntax) -> (splitAnnotatedByLines sources (ranges annotation) (categories annotation) syntax, ranges annotation)
Pure (Insert term) -> let (lines, range) = splitTermByLines term (snd sources) in
@ -104,19 +104,25 @@ splitDiffByLines diff (prevLeft, prevRight) sources = case diff of
ranges (Info left _, Info right _) = (left, right)
class TermContainer a where
toTerm :: a -> Term String Info
setTerm :: a -> Term String Info -> a
type Leaf a
toTerm :: a -> Term (Leaf a) Info
setTerm :: a -> Term (Leaf a) Info -> a
instance TermContainer (Term leaf Info) where
type (Leaf (Term leaf Info)) = leaf
instance TermContainer (Term String Info) where
toTerm = id
setTerm _ = id
instance TermContainer (String, Term String Info) where
instance TermContainer (String, Term leaf Info) where
type (Leaf (String, Term leaf Info)) = leaf
toTerm = snd
setTerm (key, _) t = (key, t)
-- | Takes a term and a source and returns a list of lines and their range within source.
splitTermByLines :: Term String Info -> Source Char -> ([Line (Term String Info)], Range)
splitTermByLines :: Term leaf Info -> Source Char -> ([Line (Term leaf Info)], Range)
splitTermByLines (Info range categories :< syntax) source = flip (,) range $ case syntax of
Leaf a -> fmap (:< Leaf a) <$> contextLines range categories source
Indexed children -> wrapLineContents (wrap Indexed) <$> adjoinChildLines children
@ -129,7 +135,7 @@ splitTermByLines (Info range categories :< syntax) source = flip (,) range $ cas
adjoinChildLines children = let (lines, previous) = foldl childLines ([], start range) children in
adjoin $ lines ++ (fmap Left <$> contextLines (Range previous $ end range) categories source)
wrap :: TermContainer b => ([b] -> Syntax String (Term String Info)) -> [Either Info b] -> Term String Info
wrap :: TermContainer b => ([b] -> Syntax leaf (Term leaf Info)) -> [Either Info b] -> Term leaf Info
wrap constructor children = (Info (fromMaybe mempty $ foldl (<>) Nothing $ Just . getRange <$> children) categories :<) . constructor $ rights children
getRange :: TermContainer b => Either Info b -> Range
@ -140,7 +146,7 @@ splitTermByLines (Info range categories :< syntax) source = flip (,) range $ cas
childLines (lines, previous) child = let (childLines, childRange) = splitTermByLines (toTerm child) source in
(adjoin $ lines ++ (fmap Left <$> contextLines (Range previous $ start childRange) categories source) ++ (fmap (Right . setTerm child) <$> childLines), end childRange)
splitAnnotatedByLines :: (Source Char, Source Char) -> (Range, Range) -> (Set.Set Category, Set.Set Category) -> Syntax String (Diff String Info) -> [Row (SplitDiff String Info)]
splitAnnotatedByLines :: Eq leaf => (Source Char, Source Char) -> (Range, Range) -> (Set.Set Category, Set.Set Category) -> Syntax leaf (Diff leaf Info) -> [Row (SplitDiff leaf Info)]
splitAnnotatedByLines sources ranges categories syntax = case syntax of
Leaf a -> fmap (Free . (`Annotated` Leaf a)) <$> contextRows ranges categories sources
Indexed children -> wrapRowContents (wrap Indexed (fst categories)) (wrap Indexed (snd categories)) <$> adjoinChildRows Indexed children
@ -188,7 +194,7 @@ openTerm source term = const term <$> openRange source range
where range = case toTerm term of
(Info range _ :< _) -> range
openDiff :: Source Char -> MaybeOpen (SplitDiff String Info)
openDiff :: Source Char -> MaybeOpen (SplitDiff leaf Info)
openDiff source diff@(Free (Annotated (Info range _) _)) = const diff <$> openRange source range
openDiff source diff@(Pure term) = const diff <$> openTerm source term