simplify FSymbol type

This commit is contained in:
krasimir
2008-05-29 11:43:28 +00:00
parent ce03503702
commit 687173736c
6 changed files with 31 additions and 35 deletions

View File

@@ -55,19 +55,19 @@ data FCFPInfo
}
getLeftCornerTok lins
getLeftCornerTok (FRule _ _ _ _ lins)
| inRange (bounds syms) 0 = case syms ! 0 of
FSymTok tok -> Just tok
_ -> Nothing
| otherwise = Nothing
FSymTok tok -> [tok]
_ -> []
| otherwise = []
where
syms = lins ! 0
getLeftCornerCat lins
getLeftCornerCat (FRule _ _ args _ lins)
| inRange (bounds syms) 0 = case syms ! 0 of
FSymCat c _ _ -> Just c
_ -> Nothing
| otherwise = Nothing
FSymCat _ d -> [args !! d]
_ -> []
| otherwise = []
where
syms = lins ! 0
@@ -88,12 +88,8 @@ buildFCFPInfo (grammar,startup) = -- trace (unlines [prt (x,Set.toList set) | (x
topdownrules = accumAssoc id [(cat, ruleid) | (ruleid, FRule _ _ _ cat _) <- assocs allrules]
epsilonrules = [ ruleid | (ruleid, FRule _ _ _ _ lins) <- assocs allrules,
not (inRange (bounds (lins ! 0)) 0) ]
leftcorncats = accumAssoc id
[ (fromJust (getLeftCornerCat lins), ruleid) |
(ruleid, FRule _ _ _ _ lins) <- assocs allrules, isJust (getLeftCornerCat lins) ]
leftcorntoks = accumAssoc id
[ (fromJust (getLeftCornerTok lins), ruleid) |
(ruleid, FRule _ _ _ _ lins) <- assocs allrules, isJust (getLeftCornerTok lins) ]
leftcorncats = accumAssoc id [ (cat, ruleid) | (ruleid, rule) <- assocs allrules, cat <- getLeftCornerCat rule ]
leftcorntoks = accumAssoc id [ (tok, ruleid) | (ruleid, rule) <- assocs allrules, tok <- getLeftCornerTok rule ]
grammarcats = aElems topdownrules
grammartoks = nubsort [t | (FRule _ _ _ _ lins) <- grammar, lin <- elems lins, FSymTok t <- elems lin]