diff options
| author | aarne <aarne@cs.chalmers.se> | 2008-06-25 16:43:48 +0000 |
|---|---|---|
| committer | aarne <aarne@cs.chalmers.se> | 2008-06-25 16:43:48 +0000 |
| commit | b96b36f43de3e2f8b58d5f539daa6f6d47f25870 (patch) | |
| tree | 0992334be13cec6538a1dea22fbbf26ad6bdf224 /src/GF/OldParsing/Utilities.hs | |
| parent | fe367412e0aeb4ad5c02de68e6eca382e0f96984 (diff) | |
removed src for 2.9
Diffstat (limited to 'src/GF/OldParsing/Utilities.hs')
| -rw-r--r-- | src/GF/OldParsing/Utilities.hs | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/src/GF/OldParsing/Utilities.hs b/src/GF/OldParsing/Utilities.hs deleted file mode 100644 index 6bacfe1fe..000000000 --- a/src/GF/OldParsing/Utilities.hs +++ /dev/null @@ -1,188 +0,0 @@ ----------------------------------------------------------------------- --- | --- Module : Parsing.Utilities --- Maintainer : PL --- Stability : (stable) --- Portability : (portable) --- --- > CVS $Date: 2005/04/21 16:22:54 $ --- > CVS $Author: bringert $ --- > CVS $Revision: 1.2 $ --- --- Basic type declarations and functions to be used when parsing ------------------------------------------------------------------------------ - - -module GF.OldParsing.Utilities - ( -- * Symbols - Symbol(..), symbol, mapSymbol, - -- * Edges - Edge(..), - -- * Parser input - Input(..), makeInput, input, inputMany, - -- * charts, parse forests & trees - ParseChart, ParseForest(..), ParseTree(..), - chart2forests, forest2trees - ) where - --- haskell modules: -import Control.Monad -import Data.Array --- gf modules: -import GF.Data.SortedList -import GF.Data.Assoc --- parsing modules: -import GF.Printing.PrintParser - ------------------------------------------------------------- --- symbols - -data Symbol c t = Cat c | Tok t - deriving (Eq, Ord, Show) - -symbol :: (c -> a) -> (t -> a) -> Symbol c t -> a -mapSymbol :: (c -> d) -> (t -> u) -> Symbol c t -> Symbol d u - ----------- - -symbol fc ft (Cat cat) = fc cat -symbol fc ft (Tok tok) = ft tok - -mapSymbol fc ft = symbol (Cat . fc) (Tok . ft) - - ------------------------------------------------------------- --- edges - -data Edge s = Edge Int Int s - deriving (Eq, Ord, Show) - -instance Functor Edge where - fmap f (Edge i j s) = Edge i j (f s) - - ------------------------------------------------------------- --- parser input - -data Input t = MkInput { inputEdges :: [Edge t], - inputBounds :: (Int, Int), - inputFrom :: Array Int (Assoc t [Int]), - inputTo :: Array Int (Assoc t [Int]), - inputToken :: Assoc t [(Int, Int)] - } - -makeInput :: Ord t => [Edge t] -> Input t -input :: Ord t => [t] -> Input t -inputMany :: Ord t => [[t]] -> Input t - ----------- - -makeInput inEdges | null inEdges = input [] - | otherwise = MkInput inEdges inBounds inFrom inTo inToken - where inBounds = foldr1 minmax [ (i, j) | Edge i j _ <- inEdges ] - where minmax (a, b) (a', b') = (min a a', max b b') - inFrom = fmap (accumAssoc id) $ accumArray (<++>) [] inBounds $ - [ (i, [(tok, j)]) | Edge i j tok <- inEdges ] - inTo = fmap (accumAssoc id) $ accumArray (<++>) [] inBounds - [ (j, [(tok, i)]) | Edge i j tok <- inEdges ] - inToken = accumAssoc id [ (tok, (i, j)) | Edge i j tok <- inEdges ] - -input toks = MkInput inEdges inBounds inFrom inTo inToken - where inEdges = zipWith3 Edge [0..] [1..] toks - inBounds = (0, length toks) - inFrom = listArray inBounds $ - [ listAssoc [(tok, [j])] | (tok, j) <- zip toks [1..] ] ++ [ listAssoc [] ] - inTo = listArray inBounds $ - [ listAssoc [] ] ++ [ listAssoc [(tok, [i])] | (tok, i) <- zip toks [0..] ] - inToken = accumAssoc id [ (tok, (i, j)) | Edge i j tok <- inEdges ] - -inputMany toks = MkInput inEdges inBounds inFrom inTo inToken - where inEdges = [ Edge i j t | (i, j, ts) <- zip3 [0..] [1..] toks, t <- ts ] - inBounds = (0, length toks) - inFrom = listArray inBounds $ - [ listAssoc [ (t, [j]) | t <- nubsort ts ] | (ts, j) <- zip toks [1..] ] - ++ [ listAssoc [] ] - inTo = listArray inBounds $ - [ listAssoc [] ] ++ - [ listAssoc [ (t, [i]) | t <- nubsort ts ] | (ts, i) <- zip toks [0..] ] - inToken = accumAssoc id [ (tok, (i, j)) | Edge i j tok <- inEdges ] - - ------------------------------------------------------------- --- charts, parse forests & trees - -type ParseChart n e = Assoc e [(n, [[e]])] - -data ParseForest n = FNode n [[ParseForest n]] | FMeta - deriving (Eq, Ord, Show) - -data ParseTree n = TNode n [ParseTree n] | TMeta - deriving (Eq, Ord, Show) - -chart2forests :: Ord e => ParseChart n e -> (e -> Bool) -> e -> [ParseForest n] - ---filterCoercions :: (n -> Bool) -> ParseForest n -> [ParseForest n] - -forest2trees :: ParseForest n -> [ParseTree n] - -instance Functor ParseTree where - fmap f (TNode n trees) = TNode (f n) $ map (fmap f) trees - fmap f (TMeta) = TMeta - -instance Functor ParseForest where - fmap f (FNode n forests) = FNode (f n) $ map (map (fmap f)) forests - fmap f (FMeta) = FMeta - ----------- - -chart2forests chart isMeta = edge2forests - where item2forest (name, children) = FNode name $ - do edges <- children - mapM edge2forests edges - edge2forests edge - | isMeta edge = [FMeta] - | otherwise = filter checkForest $ map item2forest $ chart ? edge - checkForest (FNode _ children) = not (null children) - --- filterCoercions _ (FMeta) = [FMeta] --- filterCoercions isCoercion (FNode s forests) --- | isCoercion s = do [forest] <- forests ; filterCoercions isCoercion forest --- | otherwise = FNode s $ do children <- forests ; mapM (filterCoercions isCoercion) - -forest2trees (FNode s forests) = map (TNode s) $ forests >>= mapM forest2trees -forest2trees (FMeta) = [TMeta] - - - ------------------------------------------------------------- --- pretty-printing - -instance (Print c, Print t) => Print (Symbol c t) where - prt = symbol prt (simpleShow.prt) - prtList = prtSep " " - -simpleShow :: String -> String -simpleShow s = "\"" ++ concatMap mkEsc s ++ "\"" - where - mkEsc :: Char -> String - mkEsc c = case c of - _ | elem c "\\\"" -> '\\' : [c] - '\n' -> "\\n" - '\t' -> "\\t" - _ -> [c] - -instance (Print s) => Print (Edge s) where - prt (Edge i j s) = "[" ++ show i ++ "-" ++ show j ++ ": " ++ prt s ++ "]" - prtList = prtSep "" - -instance (Print s) => Print (ParseTree s) where - prt (TNode s trees) = prt s ++ "^{" ++ prtSep " " trees ++ "}" - prt (TMeta) = "?" - prtList = prtAfter "\n" - -instance (Print s) => Print (ParseForest s) where - prt (FNode s forests) = prt s ++ "^{" ++ prtSep " | " (map (prtSep " ") forests) ++ "}" - prt (FMeta) = "?" - prtList = prtAfter "\n" - - |
