Store FCFPInfo (all information needed for FCFG parsing) in GFCC files, and in the internal DataGFCC.GFCC structure. The parsing information format is still in flux.

2026-08-03 09:55:12 -06:00 · 2008-01-03 17:10:05 +00:00
parent a12535c904
commit ad991ef299
11 changed files with 203 additions and 55 deletions
@@ -27,7 +27,6 @@ import GF.Command.PPrTree
 import GF.Data.ErrM

 import GF.Parsing.FCFG
-import GF.Conversion.SimpleToFCFG (convertGrammar)

 --import GF.Data.Operations
 --import GF.Infra.UseIO
@@ -44,7 +43,7 @@ import System.Directory (doesFileExist)
 -- Interface
 ---------------------------------------------------

-data MultiGrammar = MultiGrammar {gfcc :: GFCC, parsers :: [(Language,FCFPInfo)]}
+data MultiGrammar = MultiGrammar {gfcc :: GFCC}
 type Language     = String
 type Category     = String
 type Tree         = Exp
@@ -77,10 +76,7 @@ startCat   :: MultiGrammar -> Category

 file2grammar f = do
  gfcc <- file2gfcc f
-  return (MultiGrammar gfcc (gfcc2parsers gfcc))
-
-gfcc2parsers gfcc =
-  [(lang, buildFCFPInfo fcfg) | (CId lang,fcfg) <- convertGrammar gfcc]
+  return (MultiGrammar gfcc)

 file2gfcc f = do
  s <- readFileIf f
@@ -90,7 +86,7 @@ file2gfcc f = do
 linearize mgr lang = GF.GFCC.Linearize.linearize (gfcc mgr) (CId lang)

 parse mgr lang cat s = 
-  case lookup lang (parsers mgr) of
+  case lookParser (gfcc mgr) (CId lang) of
    Nothing    -> error "no parser"
    Just pinfo -> case parseFCF "bottomup" pinfo (CId cat) (words s) of
                    Ok x -> x
@@ -126,7 +122,7 @@ categories mgr = [c | CId c <- Map.keys (cats (abstract (gfcc mgr)))]

 startCat mgr = "S" ----

-emptyMultiGrammar = MultiGrammar emptyGFCC []
+emptyMultiGrammar = MultiGrammar emptyGFCC

 ------------ for internal use only

@@ -3,6 +3,8 @@ module GF.GFCC.DataGFCC where
 import GF.GFCC.CId
 import GF.Infra.CompactPrint
 import GF.Text.UTF8
+import GF.Formalism.FCFG
+import GF.Parsing.FCFG.PInfo

 import Data.Map
 import Data.List
@@ -31,7 +33,8 @@ data Concr = Concr {
  lincats :: Map CId Term,      -- lin type of a cat
  lindefs :: Map CId Term,      -- lin default of a cat
  printnames :: Map CId Term,   -- printname of a cat or a fun
-  paramlincats :: Map CId Term  -- lin type of cat, with printable param names
+  paramlincats :: Map CId Term, -- lin type of cat, with printable param names
+  parser  :: Maybe FCFPInfo     -- parser
  }

 data Type =
@@ -116,7 +119,6 @@ emptyGFCC = GFCC {
  concretes = empty
  }

-
 -- default map and filter are for Map here
 lmap = Prelude.map
 lfilter = Prelude.filter
@@ -2,6 +2,8 @@ module GF.GFCC.Macros where

 import GF.GFCC.CId
 import GF.GFCC.DataGFCC
+import GF.Formalism.FCFG (FGrammar)
+import GF.Parsing.FCFG.PInfo (FCFPInfo, fcfPInfoToFGrammar)
 ----import GF.GFCC.PrintGFCC
 import Data.Map
 import Data.List
@@ -28,6 +30,12 @@ lookType :: GFCC -> CId -> Type
 lookType gfcc f = 
  fst $ lookMap (error $ "lookType " ++ show f) f (funs (abstract gfcc))

+lookParser :: GFCC -> CId -> Maybe FCFPInfo
+lookParser gfcc lang = parser $ lookMap (error "no lang") lang $ concretes gfcc
+
+lookFCFG :: GFCC -> CId -> Maybe FGrammar
+lookFCFG gfcc lang = fmap fcfPInfoToFGrammar $ lookParser gfcc lang
+
 lookGlobalFlag :: GFCC -> CId -> String
 lookGlobalFlag gfcc f = 
  lookMap "?" f (gflags gfcc)
@@ -3,8 +3,15 @@ module GF.GFCC.Raw.ConvertGFCC (toGFCC,fromGFCC) where
 import GF.GFCC.DataGFCC
 import GF.GFCC.Raw.AbsGFCCRaw

+import GF.Data.Assoc
+import GF.Formalism.FCFG
+import GF.Formalism.Utilities (NameProfile(..), Profile(..), SyntaxForest(..))
+import GF.Parsing.FCFG.PInfo (FCFPInfo(..))
+
+import qualified Data.Array as Array
 import Data.Map

+
 -- convert parsed grammar to internal GFCC

 toGFCC :: Grammar -> GFCC
@@ -31,29 +38,88 @@ toGFCC (Grm [
      catfuns = fromAscList 
        [(cat,[f | (f, (DTyp _ c _,_)) <- lfuns, c==cat]) | (cat,_) <- lcats]
     in Abstr aflags funs cats catfuns,
-    concretes = fromAscList (lmap mkCnc ccs)
+    concretes = fromAscList [(lang, toConcr ts) | App lang ts <- ccs]
    }
 where
-   mkCnc (
-    App lang [
-      App (CId "flags") fls, 
-      App (CId "lin") ls, 
-      App (CId "oper") ops, 
-      App (CId "lincat") lincs,
-      App (CId "lindef") linds, 
-      App (CId "printname") prns, 
-      App (CId "param") params
-      ]) = (lang, 
-    Concr {
-     cflags       = fromAscList [(f,v) | App f [AStr v] <- fls],
-     lins         = fromAscList [(f,toTerm v) | App f [v] <- ls],  
-     opers        = fromAscList [(f,toTerm v) | App f [v] <- ops],  
-     lincats      = fromAscList [(f,toTerm v) | App f [v] <- lincs],  
-     lindefs      = fromAscList [(f,toTerm v) | App f [v] <- linds],  
-     printnames   = fromAscList [(f,toTerm v) | App f [v] <- prns],  
-     paramlincats = fromAscList [(f,toTerm v) | App f [v] <- params]  
-     }
-    )
+
+toConcr :: [RExp] -> Concr
+toConcr = foldl add (Concr {
+               cflags       = empty,
+               lins         = empty,
+               opers        = empty,
+               lincats      = empty,
+               lindefs      = empty,
+               printnames   = empty,
+               paramlincats = empty,
+               parser       = Nothing
+             })
+  where
+    add :: Concr -> RExp -> Concr
+    add cnc (App (CId "flags") ts)     = cnc { cflags = fromAscList [(f,v) | App f [AStr v] <- ts] }
+    add cnc (App (CId "lin") ts)       = cnc { lins = mkTermMap ts }
+    add cnc (App (CId "oper") ts)      = cnc { opers = mkTermMap ts }
+    add cnc (App (CId "lincat") ts)    = cnc { lincats = mkTermMap ts }
+    add cnc (App (CId "lindef") ts)    = cnc { lindefs = mkTermMap ts }
+    add cnc (App (CId "printname") ts) = cnc { printnames = mkTermMap ts }
+    add cnc (App (CId "param") ts)     = cnc { paramlincats = mkTermMap ts }
+    add cnc (App (CId "parser") ts)    = cnc { parser = Just (toPInfo ts) }
+
+toPInfo :: [RExp] -> FCFPInfo
+toPInfo = foldl add (FCFPInfo { 
+                       allRules         = error "FCFPInfo.allRules",
+                       topdownRules     = error "FCFPInfo.topdownRules",
+	               epsilonRules     = error "FCFPInfo.epsilonRules",
+	               leftcornerCats   = error "FCFPInfo.leftcornerCats",
+	               leftcornerTokens = error "FCFPInfo.leftcornerTokens",
+	               grammarCats      = error "FCFPInfo.grammarCats",
+	               grammarToks      = error "FCFPInfo.grammarToks",
+	               startupCats      = error "FCFPInfo.startupCats"})
+  where 
+    add :: FCFPInfo -> RExp -> FCFPInfo
+    add p (App (CId f) ts) =
+        case f of
+          "rules"        -> p { allRules = mkArray (lmap toFRule ts) }
+          "topdownrules" -> p { topdownRules = toAssoc expToInt (lmap expToInt) ts }
+          "epsilonrules" -> p { epsilonRules = lmap expToInt ts }
+          "lccats"       -> p { leftcornerCats = toAssoc expToInt (lmap expToInt) ts }
+          "lctoks"       -> p { leftcornerTokens = toAssoc expToStr (lmap expToInt) ts }
+          "cats"         -> p { grammarCats = lmap expToInt ts }
+          "toks"         -> p { grammarToks = lmap expToStr ts }
+          "startupcats"  -> p { startupCats = fromList [(c, lmap expToInt cs) | App c cs <- ts] }
+    toFRule :: RExp -> FRule
+    toFRule (App (CId "rule") 
+              [n,                      
+               App (CId "cats") (rt:at),
+               App (CId "R") ls]) = FRule name args res lins
+      where 
+        name = toFName n
+        args = lmap expToInt at
+        res  = expToInt rt
+        lins = mkArray [mkArray [toSymbol s | s <- l] | App (CId "S") l <- ls]
+
+toFName :: RExp -> FName
+toFName (App (CId "_A") [x]) = Name (CId "_") [Unify [expToInt x]]
+toFName (App f ts) = Name f (lmap toProfile ts)
+    where
+      toProfile :: RExp -> Profile (SyntaxForest CId)
+      toProfile AMet = Unify []
+      toProfile (App (CId "_A") [t]) = Unify [expToInt t]
+      toProfile (App (CId "_U") ts) = Unify [expToInt t | App (CId "_A") [t] <- ts]
+      toProfile t = Constant (toSyntaxForest t)
+
+      toSyntaxForest :: RExp -> SyntaxForest CId
+      toSyntaxForest AMet = FMeta
+      toSyntaxForest (App n ts) = FNode n [lmap toSyntaxForest ts]
+      toSyntaxForest (AStr s) = FString s
+      toSyntaxForest (AInt i) = FInt i
+      toSyntaxForest (AFlt f) = FFloat f
+
+toSymbol :: RExp -> FSymbol
+toSymbol (App (CId "proj") [c,n,l]) = FSymCat (expToInt c) (expToInt l) (expToInt n)
+toSymbol (AStr t) = FSymTok t
+
+toAssoc :: Ord a => (RExp -> a) -> ([RExp] -> b) -> [RExp] -> Assoc a b
+toAssoc f g xs = listAssoc [(f k, g v) | App (CId "map") (k:v) <- xs]

 toType :: RExp -> Type
 toType e = case e of
@@ -120,7 +186,7 @@ fromGFCC gfcc0 = Grm [
      app "lindef"    [App f [fromTerm v] | (f,v) <- toList (lindefs cnc)],
      app "printname" [App f [fromTerm v] | (f,v) <- toList (printnames cnc)],
      app "param"     [App f [fromTerm v] | (f,v) <- toList (paramlincats cnc)]
-      ] 
+     ] ++ maybe [] (\p -> [fromPInfo p]) (parser cnc)

 fromType :: Type -> RExp
 fromType e = case e of
@@ -163,3 +229,74 @@ fromTerm e = case e of
 where
   app = App . CId
   str v = app "S" (lmap AStr v)
+
+-- ** Parsing info
+
+fromPInfo :: FCFPInfo -> RExp
+fromPInfo p = app "parser" [
+          app "rules"        [fromFRule rule | rule <- Array.elems (allRules p)],
+          app "topdownrules" (fromAssoc intToExp (lmap intToExp) (topdownRules p)),
+          app "epsilonrules" (lmap intToExp (epsilonRules p)),
+          app "lccats"       (fromAssoc intToExp (lmap intToExp) (leftcornerCats p)),
+          app "lctoks"       (fromAssoc AStr (lmap intToExp) (leftcornerTokens p)),
+          app "cats"         (lmap intToExp (grammarCats p)),
+          app "toks"         (lmap AStr (grammarToks p)),
+          app "startupcats"  [App f (lmap intToExp cs) | (f,cs) <- toList (startupCats p)]
+        ]
+
+fromAssoc :: Ord a => (a -> RExp) -> (b -> [RExp]) -> Assoc a b -> [RExp]
+fromAssoc f g xs = [app "map" (f x:g y) | (x,y) <- aAssocs xs]
+
+fromFRule :: FRule -> RExp
+fromFRule (FRule n args res lins) = 
+    app "rule" [fromFName n,
+                app "cats" (intToExp res:lmap intToExp args),
+                app "R" [app "S" [fromSymbol s | s <- Array.elems l] | l <- Array.elems lins]
+               ]
+
+fromFName :: FName -> RExp
+fromFName n = case n of
+                Name (CId "_") [p] -> fromProfile p
+                Name f ps          -> App f (lmap fromProfile ps)
+  where
+    fromProfile :: Profile (SyntaxForest CId) -> RExp
+    fromProfile (Unify []) = AMet
+    fromProfile (Unify [x]) = daughter x
+    fromProfile (Unify args) = app "_U" (lmap daughter args)
+    fromProfile (Constant forest) = fromSyntaxForest forest
+
+    daughter n = app "_A" [intToExp n]
+
+    fromSyntaxForest :: SyntaxForest CId -> RExp
+    fromSyntaxForest FMeta = AMet
+    -- FIXME: is there always just one element here?
+    fromSyntaxForest (FNode n [args]) = App n (lmap fromSyntaxForest args)
+    fromSyntaxForest (FString s) = AStr s
+    fromSyntaxForest (FInt i) = AInt i
+    fromSyntaxForest (FFloat f) = AFlt f
+
+fromSymbol :: FSymbol -> RExp
+fromSymbol (FSymCat c l n) = app "proj" [intToExp c, intToExp n, intToExp l]
+fromSymbol (FSymTok t) = AStr t
+
+-- ** Utilities
+
+mkTermMap :: [RExp] -> Map CId Term
+mkTermMap ts = fromAscList [(f,toTerm v) | App f [v] <- ts]
+
+app :: String -> [RExp] -> RExp
+app = App . CId
+
+mkArray :: [a] -> Array.Array Int a
+mkArray xs = Array.listArray (0, length xs - 1) xs
+
+expToInt :: Integral a => RExp -> a
+expToInt (App (CId "neg") [AInt i]) = fromIntegral (negate i)
+expToInt (AInt i) = fromIntegral i
+
+expToStr :: RExp -> String
+expToStr (AStr s) = s
+
+intToExp :: Integral a => a -> RExp
+intToExp x | x < 0 = App (CId "neg") [AInt (fromIntegral (negate x))]
+           | otherwise =  AInt (fromIntegral x)