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(Incorrect) rendering of indexed nodes to rows.

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This commit is contained in:
Rob Rix 2015-12-03 11:36:00 -05:00
parent 80dcd8efae
commit 51db79e961
1 changed files with 10 additions and 0 deletions
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10
app/Split.hs
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@ -35,6 +35,16 @@ annotationAndSyntaxToRows left leftCategories right rightCategories (Leaf _) bef
leftElements = Span (classify leftCategories) <$> lines (substring left before)
rightElements = Span (classify rightCategories) <$> lines (substring right after)
annotationAndSyntaxToRows left leftCategories right rightCategories (Indexed i) before after = snd $ foldl accumulateContext ((start left, start right), []) i
where
accumulateContext ((previousLeft, previousRight), rows) child
| (childRows, left, right) <- diffToRows child before after = ((end left, end right), rows ++ contextRows ++ childRows)
where
contextRows :: [Row]
contextRows = uncurry Row <$> zipMaybe leftElements rightElements
leftElements = Text <$> lines (substring (Range previousLeft $ start left) before)
rightElements = Text <$> lines (substring (Range previousRight $ start right) before)
zipMaybe :: [a] -> [b] -> [(Maybe a, Maybe b)]
zipMaybe la lb = take len $ zip la' lb'
where