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Return ranges from diffToRows.

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This commit is contained in:
Rob Rix 2015-12-03 10:50:03 -05:00
parent ffcb4d9c98
commit 80dcd8efae
1 changed files with 4 additions and 4 deletions
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8
app/Split.hs
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@ -25,12 +25,12 @@ split _ _ _ = return mempty
data Row = Row (Maybe HTML) (Maybe HTML)
diffToRows :: Diff a Info -> String -> String -> [Row]
diffToRows (Free (Annotated (left, right) syntax)) = annotationAndSyntaxToRows (left, right) syntax
diffToRows :: Diff a Info -> String -> String -> ([Row], Range, Range)
diffToRows (Free (Annotated (Info leftRange _ leftCategories, Info rightRange _ rightCategories) syntax)) before after = (annotationAndSyntaxToRows leftRange leftCategories rightRange rightCategories syntax before after, leftRange, rightRange)
-- | Given annotations, a syntax node, and before/after strings, returns a list of `Row`s representing the newline-separated diff.
annotationAndSyntaxToRows :: (Info, Info) -> Syntax a (Diff a Info) -> String -> String -> [Row]
annotationAndSyntaxToRows (Info left _ leftCategories, Info right _ rightCategories) (Leaf _) before after = uncurry Row <$> zipMaybe leftElements rightElements
annotationAndSyntaxToRows :: Range -> Set.Set Category -> Range -> Set.Set Category -> Syntax a (Diff a Info) -> String -> String -> [Row]
annotationAndSyntaxToRows left leftCategories right rightCategories (Leaf _) before after = uncurry Row <$> zipMaybe leftElements rightElements
where
leftElements = Span (classify leftCategories) <$> lines (substring left before)
rightElements = Span (classify rightCategories) <$> lines (substring right after)