diff options
Diffstat (limited to 'src/GF/Data/Operations.hs')
| -rw-r--r-- | src/GF/Data/Operations.hs | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/src/GF/Data/Operations.hs b/src/GF/Data/Operations.hs index 551b0f1aa..3f5600f93 100644 --- a/src/GF/Data/Operations.hs +++ b/src/GF/Data/Operations.hs @@ -5,9 +5,9 @@ -- Stability : (stable) -- Portability : (portable) -- --- > CVS $Date: 2005/03/14 23:45:36 $ --- > CVS $Author: krijo $ --- > CVS $Revision: 1.17 $ +-- > CVS $Date: 2005/03/29 11:17:56 $ +-- > CVS $Author: peb $ +-- > CVS $Revision: 1.18 $ -- -- some auxiliary GF operations. AR 19\/6\/1998 -- 6\/2\/2001 -- @@ -56,7 +56,7 @@ module Operations (-- * misc functions sortByLongest, combinations, mkTextFile, initFilePath, -- * topological sorting with test of cyclicity - topoTest, topoSort, + topoTest, topoSort, cyclesIn, -- * the generic fix point iterator iterFix, @@ -570,8 +570,7 @@ mkTextFile name = do initFilePath :: FilePath -> FilePath initFilePath f = reverse (dropWhile (/='/') (reverse f)) --- topological sorting with test of cyclicity - +-- | topological sorting with test of cyclicity topoTest :: Eq a => [(a,[a])] -> Either [a] [[a]] topoTest g = if length g' == length g then Left g' else Right (cyclesIn g ++[[]]) where @@ -591,7 +590,7 @@ cyclesIn deps = nubb $ clean $ filt $ iterFix findDep immediate where remdup [] = [] - +-- | topological sorting topoSort :: Eq a => [(a,[a])] -> [a] topoSort g = reverse $ tsort 0 [ffs | ffs@(f,_) <- g, inDeg f == 0] [] where tsort _ [] r = r |