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module Interp (runInterp) where
import GenUtils
import DataTypes
import InterpUtils
import Parser (pgnLexer)
runInterp :: AbsGame -> RealGame
runInterp (Game tags toks) = Game tags (pgnInterp toks initParState)
initParState = (FirstBoard startBoard)
type Par a = StoreBoard -> a
thenP :: Par a -> (a -> Par b) -> Par b
returnP :: a -> Par a
returnP a = \s -> a
thenP m k s = case m s of
r -> k r s
failP a = \s -> error a
consP q rest = \s -> q : pgnInterp rest s
thenP' :: Par StoreBoard -> Par a -> Par a
thenP' m k s = case m s of
r -> k r
newGameP :: Par a -> Par a
newGameP m = \ _ -> m initParState
getCurrColour :: Par Colour
getCurrColour =
getBoard `thenP` \ (Board _ (MoveNumber _ col) _) ->
returnP col
checkColour :: MoveNumber -> Par ()
checkColour (MoveNumber i col) =
getBoard `thenP` \ (Board _ (MoveNumber i' col') _) ->
if i == i' && col == col'
then returnP ()
else failP ("number mis-match: "
++ userFormat (MoveNumber i col)
++ " (looking for "
++ userFormat (MoveNumber i' col')
++ ")\n")
data StoreBoard
= FirstBoard Board
| UndoableBoard Board {- new -} Board {- back one -}
updateBoard :: Board -> Par StoreBoard
updateBoard brd (FirstBoard old_brd)
= UndoableBoard brd old_brd
updateBoard brd (UndoableBoard old_brd _)
= UndoableBoard brd old_brd
getBoard :: Par Board
getBoard s@(FirstBoard brd)
= brd
getBoard s@(UndoableBoard brd _)
= brd
undoBoard :: Par StoreBoard
undoBoard (FirstBoard _)
= error "Incorrect start to some analysis"
undoBoard (UndoableBoard _ old_brd)
= FirstBoard old_brd
pgnInterp :: [Token] -> Par [Quantum]
pgnInterp (IntToken n:PeriodToken:PeriodToken:PeriodToken:rest) =
checkColour (MoveNumber n Black) `thenP` \ () ->
pgnInterp rest
pgnInterp (IntToken n:PeriodToken:rest) =
checkColour (MoveNumber n White) `thenP` \ () ->
pgnInterp rest
pgnInterp (SymbolToken str:CommentToken (ann:rs):r)
| all (flip elem "!?") ann =
pgnInterp (SymbolToken str:pgnLexer ann ++ (CommentToken rs:r))
pgnInterp (CommentToken (n:tag:rest):r)
| head tag == '(' && take 2 (reverse tag) == ":)" && length rest > 1 =
getCurrColour `thenP` \ col ->
let
invert Black r = r -- because the move has *already* happened
invert _ "0.00" = "0.00" -- don't negate 0
invert _ ('-':r) = r
invert _ r = '-':r
in
pgnInterp (LeftRBToken:map SymbolToken (take (length rest-1) rest)
++ [CommentToken ["Score:",invert col n],RightRBToken] ++ r)
pgnInterp (CommentToken []:rest) = pgnInterp rest
pgnInterp (CommentToken comm:rest) =
consP (QuantumComment comm) rest
pgnInterp (NAGToken nag:rest) =
consP (QuantumNAG nag) rest
pgnInterp (NAGAnnToken nag _:rest) =
consP (QuantumNAG nag) rest
pgnInterp (SymbolToken "0-1":rest) =
consP (QuantumResult "0-1") rest
pgnInterp (SymbolToken "1-0":rest) =
consP (QuantumResult "1-0") rest
pgnInterp (SymbolToken "1/2-1/2":rest) =
consP (QuantumResult "1/2-1/2") rest
pgnInterp (AsterixToken:rest) =
consP (QuantumResult "*") rest
pgnInterp (SymbolToken move:rest@(NAGAnnToken _ str:_)) =
getBoard `thenP` \ brd ->
parseMove move brd `thenP` \ (mv,ch,corrMv,new_brd) ->
updateBoard new_brd `thenP'`
consP (QuantumMove mv ch str new_brd) rest
pgnInterp (SymbolToken move:rest) =
getBoard `thenP` \ brd ->
parseMove move brd `thenP` \ (mv,ch,corrMv,new_brd) ->
updateBoard new_brd `thenP'`
consP (QuantumMove mv ch "" new_brd) rest
pgnInterp (LeftRBToken:rest) =
getAnalysis rest 0 [] `thenP` \ (anal,rest) ->
(undoBoard `thenP'`
pgnInterp anal) `thenP` \ anal' ->
consP (QuantumAnalysis anal') rest
pgnInterp [] = returnP []
pgnInterp toks = failP ("when reading: "
++ unwords (map userFormat (take 10 toks)))
getAnalysis (t@LeftRBToken:r) n anal = getAnalysis r (n+1) (t:anal)
getAnalysis (t@RightRBToken:r) n anal
| n == (0 :: Int) = returnP (reverse anal,r)
| otherwise = getAnalysis r (n-1) (t:anal)
getAnalysis (t:r) n anal = getAnalysis r n (t:anal)
getAnalysis [] n anal = failP "no closing ')'"
parseMove :: String -> Board -> Par (String,String,String,Board)
parseMove move brd@(Board _ (MoveNumber _ col) _) =
case mapMaybeFail charToMoveTok move of
Nothing -> failP ("strange move:" ++ move)
Just mv_toks ->
let
(chs,mv_toks') = getChecks (reverse mv_toks)
(queen,mv_toks'') = getQueen mv_toks'
in
case parseAlgMove mv_toks'' queen brd of
(the_mv,new_brd) -> returnP (the_mv,chs,"$$",new_brd)
parseAlgMove
:: [MoveTok]
-> Maybe Piece
-> Board
-> (String,Board)
parseAlgMove [PartCastleTok,MoveToTok,PartCastleTok] Nothing
= findCastleKMove
parseAlgMove [PartCastleTok,MoveToTok,PartCastleTok,
MoveToTok,PartCastleTok] Nothing
= findCastleQMove
parseAlgMove (PieceTok King:r) Nothing = parsePieceMove r King
parseAlgMove (PieceTok Queen:r) Nothing = parsePieceMove r Queen
parseAlgMove (PieceTok Rook:r) Nothing = parsePieceMove r Rook
parseAlgMove (PieceTok Knight:r) Nothing = parsePieceMove r Knight
parseAlgMove (PieceTok Bishop:r) Nothing = parsePieceMove r Bishop
parseAlgMove [FileTok sf,RankTok sr,MoveToTok,FileTok df,RankTok dr] q =
findAPawnMove (extendBP (sf,sr)) (extendBP (df,dr)) q
parseAlgMove [FileTok sf,RankTok sr,CaptureTok,FileTok df,RankTok dr] q =
findAPawnMove (extendBP (sf,sr)) (extendBP (df,dr)) q
parseAlgMove [FileTok sf,RankTok sr,FileTok df,RankTok dr] q = \ brd ->
case lookupBoardPiece brd (sf,sr) of
Nothing -> error ("cant find piece at: " ++ userFormatBoardPos (sf,sr))
Just Pawn -> findAPawnMove (extendBP (sf,sr)) (extendBP (df,dr)) q brd
Just King | sf == 5 && df == 7 -> findCastleKMove brd
Just King | sf == 5 && df == 3 -> findCastleQMove brd
Just p -> findAMove p (extendBP (sf,sr)) (extendBP (df,dr)) brd
-- later !
parseAlgMove [FileTok df,RankTok dr] q =
findAPawnMove (Nothing,Nothing) (extendBP (df,dr)) q
parseAlgMove [FileTok sf,CaptureTok,FileTok df,RankTok dr] q =
findAPawnMove (Just sf,Nothing) (extendBP (df,dr)) q
parseAlgMove [FileTok sf,FileTok df] q =
findAPawnMove (Just sf,Nothing) (Just df,Nothing) q
parseAlgMove [FileTok sf,CaptureTok,FileTok df] q =
findAPawnMove (Just sf,Nothing) (Just df,Nothing) q
parseAlgMove _ _ = error "!>!"
parsePieceMove [FileTok df,RankTok dr] p
= findAMove p (Nothing,Nothing) (extendBP (df,dr))
parsePieceMove [CaptureTok,FileTok df,RankTok dr] p
= findAMove p (Nothing,Nothing) (extendBP (df,dr))
parsePieceMove [RankTok sr,FileTok df,RankTok dr] p
= findAMove p (Nothing,Just sr) (extendBP (df,dr))
parsePieceMove [RankTok sr,CaptureTok,FileTok df,RankTok dr] p
= findAMove p (Nothing,Just sr) (extendBP (df,dr))
parsePieceMove [FileTok sf,FileTok df,RankTok dr] p
= findAMove p (Just sf,Nothing) (extendBP (df,dr))
parsePieceMove [FileTok sf,CaptureTok,FileTok df,RankTok dr] p
= findAMove p (Just sf,Nothing) (extendBP (df,dr))
parsePieceMove [FileTok sf,RankTok sr,MoveToTok,FileTok df,RankTok dr] p
= findAMove p (extendBP (sf,sr)) (extendBP (df,dr))
parsePieceMove [FileTok sf,RankTok sr,CaptureTok,FileTok df,RankTok dr] p
= findAMove p (extendBP (sf,sr)) (extendBP (df,dr))
parsePieceMove _ p = failP ("syntax error in move:")
getChecks (CheckTok:CheckTok:r) = ("#",r)
getChecks (CheckTok:r) = ("+",r)
getChecks (MateTok:r) = ("#",r)
getChecks r = ("",r)
getQueen (PieceTok p:QueensWith:r) = (Just p,reverse r)
getQueen r = (Nothing,reverse r)
|
