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Fix (and clean up) indentation parsing

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This commit is contained in:
Adam Sampson 2007-03-18 01:56:10 +00:00
parent 4be72cbb24
commit 4427333d2f
1 changed files with 6 additions and 5 deletions
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11
fco2/Indentation.hs
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@ -37,12 +37,13 @@ parseIndentation ls = concat $ intersperse "\n" $ lines
rep n i = concat $ take n (repeat i)
flatten' [] level = ("", [rep level (' ' : outdentMarker)])
flatten' (s:ss) level
| stripped == "" = let (suffix, rest) = flatten' ss level in ("", suffix : rest)
| newLevel > level = (rep (newLevel - level) (' ' : indentMarker), stripped : rest)
| newLevel < level = (rep (level - newLevel) (' ' : outdentMarker), stripped : rest)
| otherwise = ("", stripped : rest)
| isBlankLine = let (suffix, rest) = flatten' ss level in (suffix, "" : rest)
| newLevel > level = (rep (newLevel - level) (' ' : indentMarker), processed : rest)
| newLevel < level = (rep (level - newLevel) (' ' : outdentMarker), processed : rest)
| otherwise = ("", processed : rest)
where newLevel = countIndent s
stripped' = stripComment s
stripped = (if stripIndent stripped' == "" then "" else (stripped' ++ (' ' : eolMarker))) ++ suffix
isBlankLine = stripIndent stripped' == ""
processed = (if isBlankLine then "" else (stripped' ++ (' ' : eolMarker))) ++ suffix
(suffix, rest) = flatten' ss newLevel