| author | unC0Rr |
| Thu, 18 Nov 2010 17:01:35 +0300 | |
| changeset 4382 | 935de6cd5ea3 |
| parent 4367 | f4a0ec067601 |
| child 4384 | 615a3e7bd850 |
| permissions | -rw-r--r-- |
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Dumb parser of pascal, and a program which lists unit dependencies
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module Main where |
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Dumb parser of pascal, and a program which lists unit dependencies
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import PascalParser |
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import System |
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Dumb parser of pascal, and a program which lists unit dependencies
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import Control.Monad |
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Dumb parser of pascal, and a program which lists unit dependencies
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import Data.Either |
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import Data.List |
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import Data.Graph |
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import Data.Maybe |
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Dumb parser of pascal, and a program which lists unit dependencies
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unident :: Identificator -> String |
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unident (Identificator s) = s |
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extractUnits :: PascalUnit -> (String, [String]) |
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extractUnits (Program (Identificator name) (Implementation (Uses idents) _ _) _) = ("program " ++ name, map unident idents)
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extractUnits (Unit (Identificator name) (Interface (Uses idents1) _) (Implementation (Uses idents2) _ _) _ _) = (name, map unident $ idents1 ++ idents2) |
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Dumb parser of pascal, and a program which lists unit dependencies
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f :: [(String, [String])] -> String |
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f = unlines . map showSCC . stronglyConnComp . map (\(a, b) -> (a, a, b)) |
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where |
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showSCC (AcyclicSCC v) = v |
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showSCC (CyclicSCC vs) = intercalate ", " vs |
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myf :: [(String, [String])] -> String |
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myf d = unlines . map (findCycle . fst) $ d |
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where |
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findCycle :: String -> String |
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findCycle searched = intercalate ", " $ fc searched [searched] |
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where |
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fc :: String -> [String] -> [String] |
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fc curSearch visited = let uses = curSearch `lookup` d in if isNothing uses then [] else concatMap t $ fromJust uses |
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where |
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t u = |
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if u == searched then |
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[u] |
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else |
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if u `elem` visited then |
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[] |
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else |
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let chain = fc u (u:visited) in if null chain then [] else u:chain |
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Dumb parser of pascal, and a program which lists unit dependencies
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main = do |
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fileNames <- getArgs |
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files <- mapM readFile fileNames |
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putStrLn . myf . map extractUnits . rights . map parsePascalUnit $ files |