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import System.Directory
import System.FilePath
import Data.List
import Data.Char(toLower)
import Control.Monad
import qualified Data.Map as Map

import PGF (readPGF, readLanguage, buildMorpho, lookupMorpho, mkCId, functionType, unType)
import SusanneFormat
import Parser
import Idents

Just eng = readLanguage "DictEng"

main = do
  gr <- readPGF "DictEngAbs.pgf"
  let morpho = buildMorpho gr eng
  fs <- getDirectoryContents "data"
  txts <- (mapM (\f -> readFile ("data" </> f)) . filter ((/= ".") . take 1)) (sort fs)
  --let ts' = readTreebank (lines (concat txts))
  --writeFile "text" (unlines (map show ts'))
  let (ts',rs') = combineRes (convert gr morpho) (readTreebank (lines (concat txts)))
  let rm = Map.fromListWith (++) rs'
  writeFile "susanne.gft" (unlines (map show ts'))
  writeFile "rules" (unlines (concat [unwords ("-":cat:"->":cats) : map (\t -> "     "++show t) rs'' | (cat :-> cats,rs'') <- Map.toList rm]))

data Rule = Tag :-> [Tag]
            deriving (Eq,Ord)

convert pgf morpho w@(Word _ tag _ lemma)
  | elem tag ["YB","YBL","YBR","YF","YIL","YIR","YTL","YTR", "YO"] = ([],[])
{-  | tag == "NN1c" = convertLemma pgf morpho (mkCId "N") "s Sg Nom" w
  | tag == "NN1n" = convertLemma pgf morpho (mkCId "N") "s Sg Nom" w
  | tag == "NN2"  = convertLemma pgf morpho (mkCId "N") "s Pl Nom" w
  | tag == "JJ"   = convertLemma pgf morpho (mkCId "A") "s (AAdj Posit Nom)" w
  | tag == "JB"   = convertLemma pgf morpho (mkCId "A") "s (AAdj Posit Nom)" w
  | tag == "JBo"  = convertLemma pgf morpho (mkCId "A") "s (AAdj Posit Nom)" w
  | tag == "AT"   = convertLemma pgf morpho (mkCId "Quant") "s False Sg" w
  | tag == "VVDi" = convertLemma pgf morpho (mkCId "V") "s VPast" w
  | tag == "VVDt" = convertLemma pgf morpho (mkCId "V2") "s VPast" w
  | tag == "VVDv" = convertLemma pgf morpho (mkCId "V") "s VPast" w
  | tag == "VVZi" = convertLemma pgf morpho (mkCId "V") "s VPres" w
  | tag == "VVZt" = convertLemma pgf morpho (mkCId "V2") "s VPres" w
  | tag == "VVZv" = convertLemma pgf morpho (mkCId "V") "s VPres" w
  | tag == "PPHS2"= convertLemma pgf morpho (mkCId "Pron") "s (NCase Nom)" w
  | tag == "PPHO2"= convertLemma pgf morpho (mkCId "Pron") "s NPAcc" w
  | tag == "RR"   = convertLemma pgf morpho (mkCId "Adv") "s" w
  | tag == "II"   = convertLemma pgf morpho (mkCId "Prep") "s" w
  | tag == "IO"   = convertLemma pgf morpho (mkCId "Prep") "s" w-}
  | otherwise                                                 = ([w],[])
convert pgf morpho t@(Phrase tag mods fn idx ts)
  | tag == "O" = (ts',rs')
  | tag == "Q" = (ts',rs')
  | tag == "S" = case runP pS pgf morpho ts' of
                   Just ([],x) -> ([x], rs')
                   _           -> ([Phrase tag mods fn idx ts'], (r,[t]) : rs')
  | otherwise  = ([Phrase tag mods fn idx ts'], (r,[t]) : rs')
  where
    (ts',rs') = combineRes (convert pgf morpho) ts
    r         = tag :-> map getTag ts

    isExtra (Word _ "YIL" _ _) = True
    isExtra (Word _ "YIR" _ _) = True
    isExtra (Word _ "YTL" _ _) = True
    isExtra (Word _ "YTR" _ _) = True
    isExtra _                  = False

    getTag (Phrase tag mods fn idx ts) = tag++if null fn then "" else ":"++fn
    getTag (Word _ tag _ _)            = tag

convertLemma pgf morpho cat an0 w@(Word _ tag form _) =
  case [f | (f,an) <- lookupMorpho morpho (map toLower form), hasCat pgf f cat, an == an0] of
    [f] -> ([App f []], [])
    _   -> ([w],[])
  where
    hasCat pgf f cat =
      case functionType pgf f of
        Just ty -> case unType ty of
                     (_,cat1,_) -> cat1 == cat
        Nothing -> False

combineRes f ts = (ts',rs')
  where
    (x,y) = unzip (map f ts)
    ts' = concat x
    rs' = concat y

pS =
  do mplus pConj (return ())
     advs <- many pAdS
     np <- pSubject
     (t,p,vp) <- pVP
     return (foldr ($) (App cidUseCl [t,p,App cidPredVP [np, vp]]) advs)
  `mplus`
  do mplus pConj (return ())
     (t,p,vp) <- pVP
     return (App cidImpVP [vp])
  `mplus`
  do mplus pConj (return ())
     advs <- many pAdS
     t1 <- match "EX"
     (t,p,vp) <- pVP
     return (foldr ($) (App cidUseCl [t,p,App cidExistNP [t1,vp]]) advs)

pSubject =
  do insideOpt "N:s" pNP
  `mplus`
  do insideOpt "N:S" pNP
  `mplus`
  do match "M:s"
  `mplus`
  do match "M:S"
  `mplus`
  do match "D:s"
  `mplus`
  do match "D:S"

pConj =
  do match "CC"
     return ()
  `mplus`
  do match "CCB"
     return ()

pAdS =
  do adv <- pAdv
     match "YC"
     return (\t -> App cidExtAdvS [adv,t])
  `mplus`
  do adv <- pAdv
     return (\t -> App cidAdvS [adv,t])

pVP =
  do adVs     <- many pAdV
     (t,p,vs) <- pV "VS"
     advs     <- many pAdv
     s        <- insideOpt "F:o"
                   (opt (match "CST") >> pS)
     return (t,p,foldr (\adv t -> App cidAdVVP [adv,t])
                       (foldl (\t adv -> App cidAdvVP [t, adv])
                              (App cidComplVS [vs, s])
                              advs)
                       adVs)
  `mplus`
  do adVs     <- many pAdV
     (t,p,vv) <- pV "VV"
     advs     <- many pAdv
     vp       <- match "Ti"
     return (t,p,foldr (\adv t -> App cidAdVVP [adv,t])
                       (foldl (\t adv -> App cidAdvVP [t, adv])
                              (App cidComplVV [vv, vp])
                              advs)
                       adVs)
  `mplus`
  do adVs     <- many pAdV
     (t,p,v2) <- pV "V2"
     o        <- pObject
     opt (match "YC")   -- what is this?
     advs     <- many pAdv
     return (t,p,foldr (\adv t -> App cidAdVVP [adv,t])
                       (foldl (\t adv -> App cidAdvVP [t, adv])
                              (App cidComplSlash [App cidSlashV2a [v2],o])
                              advs)
                       adVs)
  `mplus`
  do adVs    <- many pAdV
     (t,p,v) <- pV "V"
     advs    <- many pAdv
     return (t,p,foldr (\adv t -> App cidAdVVP [adv,t])
                       (foldl (\t adv -> App cidAdvVP [t, adv])
                              (App cidUseV [v])
                              advs)
                       adVs)

pV cat =
  do inside "V" $
       do v <- lemma "VVDv" (mkCId cat) "s VPast"
          return (App cidTTAnt [App cidTPast [],App cidASimul []],App cidPPos [],v)
       `mplus`
       do v <- lemma "VVDt" (mkCId cat) "s VPast"
          return (App cidTTAnt [App cidTPast [],App cidASimul []],App cidPPos [],v)
       `mplus`
       do v <- lemma "VVZv" (mkCId cat) "s VPres"
          return (App cidTTAnt [App cidTPres [],App cidASimul []],App cidPPos [],v)
       `mplus`
       do match "VHD"
          match "VHD"
          v <- lemma "VVNv" (mkCId cat) "s VPPart"
          return (App cidTTAnt [App cidTPres [],App cidAAnter []],App cidPPos [],v)
  `mplus`
  do v <- match "V"
     return (App (mkCId "XXX") [],App (mkCId "XXX") [],v)

pAdV =
  do insideOpt "R:c" $
       lemma "RRR" (mkCId "AdV") "s"
  `mplus`
  do match "R:m"

pObject = 
  match "P:u"
  `mplus`
  insideOpt "N:o" pNP
  `mplus`
  match "N:e"
  `mplus`
  match "M:e"
  `mplus`
  match "D:e"
  `mplus`
  match "P:e"

pAdv =
  do match "N:t"
  `mplus`
  do match "N:h"
  `mplus`
  do match "P:p"
  `mplus`
  do match "P:q"
  `mplus`
  do match "P:a"
  `mplus`
  do match "P:t"
  `mplus`
  do match "P:h"
  `mplus`
  do match "P:m"
  `mplus`
  do match "P:r"
  `mplus`
  do match "R:p"
  `mplus`
  do match "R:q"
  `mplus`
  do match "R:a"
  `mplus`
  do match "R:t"
  `mplus`
  do match "R:h"
  `mplus`
  do match "R:m"
  `mplus`
  do match "R:c"
  `mplus`
  do match "R:r"
  `mplus`
  do match "F:p"
  `mplus`
  do match "F:q"
  `mplus`
  do match "F:a"
  `mplus`
  do match "F:t"
  `mplus`
  do match "F:h"
  `mplus`
  do match "F:m"
  `mplus`
  do match "F:r"
  `mplus`
  do match "W:b"
  `mplus`
  do match "L:b"

pNP = do
  q      <- pQuant
  (n,cn) <- pCN
  return (App cidDetCN [App cidDetQuant [q,n],cn])

pQuant =
  do lemma "AT" (mkCId "Quant") "s False Sg"
  `mplus`
  do match "AT1"
     return (App cidIndefArt [])

pCN =
  do np <- insideOpt "N" pNP
     (n,cn) <- pCN
     return (n,App (mkCId "Appos") [np,cn])
  `mplus`
  do a  <- lemma "JJ" (mkCId "A") "s (AAdj Posit Nom)"
     (n,cn) <- pCN
     return (n,App cidAdjCN [App cidPositA [a],cn])
  `mplus`
  do (num,n) <- pN
     advs <- many pPo
     return (num,
             foldl (\t adv -> App cidAdvCN [t, adv])
                   (App cidUseN [n])
                   advs)

pN = 
  do n <- lemma "NN1c" (mkCId "N") "s Sg Nom"
     return (App cidNumSg [], n)
  `mplus`
  do n <- lemma "NN1n" (mkCId "N") "s Sg Nom"
     return (App cidNumSg [], n)

pPo =
  insideOpt "Po" $ do
    p  <- match "IO"
    np <- insideOpt "N" pNP
    return (App cidPrepNP [p,np])