SRG always has RE rhs.

src/GF/Speech/PrGSL.hs

@@ -48,12 +48,12 @@ prGSL (SRG{grammarName=name,startCat=start,origStartCat=origStart,rules=rs})
 	      text ".MAIN" <+> prCat start
     prRule (SRGRule cat origCat rhs) = 
 	comment (prt origCat) $$ 
-        prCat cat <+> union (map prAlt (ebnfSRGAlts rhs))
+        prCat cat <+> union (map prAlt rhs)
     -- FIXME: use the probability
-    prAlt (EBnfSRGAlt mp _ rhs) = prItem rhs
+    prAlt (SRGAlt mp _ rhs) = prItem rhs
 
 
-prItem :: EBnfSRGItem -> Doc
+prItem :: SRGItem -> Doc
 prItem = f
   where
     f (REUnion xs) = (if null es then empty else text "?") <> union (map f nes)

src/GF/Speech/PrJSGF.hs

@@ -60,10 +60,10 @@ prJSGF sisr srg@(SRG{grammarName=name,grammarLanguage=ml,
                 Nothing -> empty
     prRule (SRGRule cat origCat rhs) = 
 	comment origCat $$
-        rule False cat (map prAlt (ebnfSRGAlts rhs))
+        rule False cat (map prAlt rhs)
 --        rule False cat (map prAlt rhs)
     -- FIXME: use the probability
-    prAlt (EBnfSRGAlt mp n rhs) = sep [initTag, parens (prItem sisr n rhs), finalTag]
+    prAlt (SRGAlt mp n rhs) = sep [initTag, parens (prItem sisr n rhs), finalTag]
 --    prAlt (SRGAlt mp n rhs) = initTag <+> prItem sisr n rhs <+> finalTag
       where initTag | isEmpty t = empty
                     | otherwise = text "<NULL>" <+>  t
@@ -79,7 +79,7 @@ catFormId = (++ "_cat")
 prCat :: SRGCat -> Doc
 prCat c = char '<' <> text c <> char '>'
 
-prItem :: Maybe SISRFormat -> CFTerm -> EBnfSRGItem -> Doc
+prItem :: Maybe SISRFormat -> CFTerm -> SRGItem -> Doc
 prItem sisr t = f 1
   where
     f _ (REUnion [])  = text "<VOID>"

src/GF/Speech/PrSRGS.hs

@@ -56,7 +56,7 @@ prSrgsXml sisr probs srg@(SRG{grammarName=name,startCat=start,
             ++ topCatRules
 	    ++ concatMap ruleToXML rs
     ruleToXML (SRGRule cat origCat alts) = 
-        comments ["Category " ++ origCat] ++ [rule cat (prRhs (ebnfSRGAlts alts))]
+        comments ["Category " ++ origCat] ++ [rule cat (prRhs alts)]
     prRhs rhss = [oneOf (map (mkProd sisr probs) rhss)] 
     -- externally visible rules for each of the GF categories
     topCatRules = [topRule tc [oneOf (map (it tc) cs)] | (tc,cs) <- srgTopCats srg]
@@ -67,15 +67,15 @@ prSrgsXml sisr probs srg@(SRG{grammarName=name,startCat=start,
 rule :: String -> [XML] -> XML
 rule i = Tag "rule" [("id",i)]
 
-mkProd :: Maybe SISRFormat -> Bool -> EBnfSRGAlt -> XML
-mkProd sisr probs (EBnfSRGAlt mp n rhs) = Tag "item" w (ti ++ [x] ++ tf)
+mkProd :: Maybe SISRFormat -> Bool -> SRGAlt -> XML
+mkProd sisr probs (SRGAlt mp n rhs) = Tag "item" w (ti ++ [x] ++ tf)
   where x = mkItem sisr n rhs
         w | probs = maybe [] (\p -> [("weight", show p)]) mp
           | otherwise = []
         ti = [tag sisr (profileInitSISR n)]
         tf = [tag sisr (profileFinalSISR n)]
 
-mkItem :: Maybe SISRFormat -> CFTerm -> EBnfSRGItem -> XML
+mkItem :: Maybe SISRFormat -> CFTerm -> SRGItem -> XML
 mkItem sisr cn = f
   where 
     f (REUnion [])  = ETag "ruleref" [("special","VOID")]

src/GF/Speech/PrSRGS_ABNF.hs

@@ -65,9 +65,9 @@ prABNF sisr probs srg@(SRG{grammarName=name,grammarLanguage=ml,
                 Nothing -> empty
     prRule (SRGRule cat origCat rhs) = 
 	comment origCat $$
-        rule False cat (map prAlt (ebnfSRGAlts rhs))
+        rule False cat (map prAlt rhs)
     -- FIXME: use the probability
-    prAlt (EBnfSRGAlt mp n rhs) = sep [initTag, parens (prItem sisr n rhs), finalTag]
+    prAlt (SRGAlt mp n rhs) = sep [initTag, parens (prItem sisr n rhs), finalTag]
       where initTag = tag sisr (profileInitSISR n)
             finalTag = tag sisr (profileFinalSISR n)
 
@@ -80,7 +80,7 @@ catFormId = (++ "_cat")
 prCat :: SRGCat -> Doc
 prCat c = char '$' <> text c
 
-prItem :: Maybe SISRFormat -> CFTerm -> EBnfSRGItem -> Doc
+prItem :: Maybe SISRFormat -> CFTerm -> SRGItem -> Doc
 prItem sisr t = f 1
   where
     f _ (REUnion [])  = text "$VOID"

src/GF/Speech/SRG.hs

@@ -16,13 +16,11 @@
 -- categories in the grammar
 -----------------------------------------------------------------------------
 
-module GF.Speech.SRG (SRG(..), SRGRule(..), SRGAlt(..),
+module GF.Speech.SRG (SRG(..), SRGRule(..), SRGAlt(..), SRGItem,
                       SRGCat, SRGNT, CFTerm,
                        makeSimpleSRG
                      , lookupFM_, prtS
                      , cfgCatToGFCat, srgTopCats
-                     , EBnfSRGAlt(..), EBnfSRGItem
-                     , ebnfSRGAlts
                      ) where
 
 import GF.Data.Operations
@@ -63,9 +61,11 @@ data SRGRule = SRGRule SRGCat String [SRGAlt] -- ^ SRG category name, original c
 	     deriving (Eq,Show)
 
 -- | maybe a probability, a rule name and a list of symbols
-data SRGAlt = SRGAlt (Maybe Double) CFTerm [Symbol SRGNT Token]
+data SRGAlt = SRGAlt (Maybe Double) CFTerm SRGItem
 	      deriving (Eq,Show)
 
+type SRGItem = RE (Symbol SRGNT Token)
+
 type SRGCat = String
 
 -- | An SRG non-terminal. Category name and its number in the profile.
@@ -108,13 +108,13 @@ cfgRulesToSRGRule names probs rs@(r:_) = SRGRule cat origCat rhs
     where 
       origCat = lhsCat r
       cat = lookupFM_ names origCat
-      rhs = nub $ map ruleToAlt rs
-      ruleToAlt r@(CFRule c ss n) 
-          = SRGAlt (ruleProb probs r) n (mkSRGSymbols 0 ss)
-            where
-              mkSRGSymbols _ [] = []
-              mkSRGSymbols i (Cat c:ss) = Cat (renameCat c,i) : mkSRGSymbols (i+1) ss
-              mkSRGSymbols i (Tok t:ss) = Tok t : mkSRGSymbols i ss
+      alts = [((n,ruleProb probs r),mkSRGSymbols 0 ss) | CFRule c ss n <- rs]
+      rhs = [SRGAlt p n (srgItem sss) | ((n,p),sss) <- buildMultiMap alts ]
+
+      mkSRGSymbols _ [] = []
+      mkSRGSymbols i (Cat c:ss) = Cat (renameCat c,i) : mkSRGSymbols (i+1) ss
+      mkSRGSymbols i (Tok t:ss) = Tok t : mkSRGSymbols i ss
+
       renameCat = lookupFM_ names
 
 ruleProb :: Probs -> CFRule_ -> Maybe Double
@@ -153,22 +153,12 @@ srgTopCats srg = buildMultiMap [(oc, cat) | SRGRule cat origCat _ <- rules srg,
 -- * Size-optimized EBNF SRGs
 --
 
-data EBnfSRGAlt = EBnfSRGAlt (Maybe Double) CFTerm EBnfSRGItem
-	     deriving (Eq,Show)
-
-type EBnfSRGItem = RE (Symbol SRGNT Token)
-
-
-ebnfSRGAlts :: [SRGAlt] -> [EBnfSRGAlt]
-ebnfSRGAlts alts = [EBnfSRGAlt p n (ebnfSRGItem sss) 
-                    | ((n,p),sss) <- buildMultiMap [((n,p),ss) | SRGAlt p n ss <- alts]]
-
-ebnfSRGItem :: [[Symbol SRGNT Token]] -> EBnfSRGItem
-ebnfSRGItem = unionRE . map mergeItems . sortGroupBy (compareBy filterCats)
+srgItem :: [[Symbol SRGNT Token]] -> SRGItem
+srgItem = unionRE . map mergeItems . sortGroupBy (compareBy filterCats)
 
 -- | Merges a list of right-hand sides which all have the same 
 -- sequence of non-terminals.
-mergeItems :: [[Symbol SRGNT Token]] -> EBnfSRGItem
+mergeItems :: [[Symbol SRGNT Token]] -> SRGItem
 mergeItems = minimizeRE . ungroupTokens . minimizeRE . unionRE . map seqRE . map groupTokens
 
 groupTokens :: [Symbol SRGNT Token] -> [Symbol SRGNT [Token]]