diff options
| author | peb <unknown> | 2005-04-12 09:49:44 +0000 |
|---|---|---|
| committer | peb <unknown> | 2005-04-12 09:49:44 +0000 |
| commit | fa6ba9a5318640778040e86268e9003216f3636e (patch) | |
| tree | fdbafb9713893bfb978d3c18f0fc7fc778bc763e /src/GF/Parsing/ConvertGFCtoMCFG/Coercions.hs | |
| parent | 5f25c828178281ed8f8b77abc0b599d740c797b0 (diff) | |
"Committed_by_peb"
Diffstat (limited to 'src/GF/Parsing/ConvertGFCtoMCFG/Coercions.hs')
| -rw-r--r-- | src/GF/Parsing/ConvertGFCtoMCFG/Coercions.hs | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/src/GF/Parsing/ConvertGFCtoMCFG/Coercions.hs b/src/GF/Parsing/ConvertGFCtoMCFG/Coercions.hs deleted file mode 100644 index 81328ad15..000000000 --- a/src/GF/Parsing/ConvertGFCtoMCFG/Coercions.hs +++ /dev/null @@ -1,71 +0,0 @@ ----------------------------------------------------------------------- --- | --- Module : ConvertGFCtoMCFG.Coercions --- Maintainer : PL --- Stability : (stable) --- Portability : (portable) --- --- > CVS $Date: 2005/03/29 11:17:55 $ --- > CVS $Author: peb $ --- > CVS $Revision: 1.2 $ --- --- Adding coercion functions to a MCFG if necessary. ------------------------------------------------------------------------------ - - -module GF.Parsing.ConvertGFCtoMCFG.Coercions (addCoercions) where - -import GF.System.Tracing -import GF.Printing.PrintParser -import GF.Printing.PrintSimplifiedTerm --- import PrintGFC --- import qualified PrGrammar as PG - -import qualified Ident -import GF.Parsing.Utilities -import GF.Parsing.GrammarTypes -import GF.Parsing.MCFGrammar (Rule(..), Lin(..)) -import GF.Data.SortedList -import List (groupBy) -- , transpose) - ----------------------------------------------------------------------- - -addCoercions :: MCFGrammar -> MCFGrammar -addCoercions rules = coercions ++ rules - where (allHeads, allArgs) = unzip [ ((head, lbls), nubsort args) | - Rule head args lins _ <- rules, - let lbls = [ lbl | Lin lbl _ <- lins ] ] - allHeadSet = nubsort allHeads - allArgSet = union allArgs <\\> map fst allHeadSet - coercions = tracePrt "#coercions total" (prt . length) $ - concat $ - tracePrt "#coercions per cat" (prtList . map length) $ - combineCoercions - (groupBy sameCatFst allHeadSet) - (groupBy sameCat allArgSet) - sameCatFst a b = sameCat (fst a) (fst b) - - -combineCoercions [] _ = [] -combineCoercions _ [] = [] -combineCoercions allHeads'@(heads:allHeads) allArgs'@(args:allArgs) - = case compare (mainCat $ fst $ head heads) (mainCat $ head args) of - LT -> combineCoercions allHeads allArgs' - GT -> combineCoercions allHeads' allArgs - EQ -> makeCoercion heads args : combineCoercions allHeads allArgs - - -makeCoercion heads args = [ Rule arg [head] lins coercionName | - (head@(MCFCat _ headCns), lbls) <- heads, - let lins = [ Lin lbl [Cat (head, lbl, 0)] | lbl <- lbls ], - arg@(MCFCat _ argCns) <- args, - argCns `subset` headCns ] - - -coercionName = Ident.IW - -mainCat (MCFCat c _) = c - -sameCat mc1 mc2 = mainCat mc1 == mainCat mc2 - - |