export the morphology API from PGF

src/PGF/Morphology.hs

@@ -1,4 +1,6 @@
-module PGF.Morphology where
+module PGF.Morphology(Lemma,Analysis,Morpho,
+                      buildMorpho,
+                      lookupMorpho,fullFormLexicon) where
 
 import PGF.ShowLinearize (collectWords)
 import PGF.Data
@@ -9,24 +11,16 @@ import Data.List (intersperse)
 
 -- these 4 definitions depend on the datastructure used
 
-type Morpho = Map.Map String [(Lemma,Analysis)]
-
-lookupMorpho :: Morpho -> String -> [(Lemma,Analysis)]
-lookupMorpho mo s = maybe noAnalysis id $ Map.lookup s mo
-
-buildMorpho :: PGF -> CId -> Morpho
-buildMorpho pgf = Map.fromListWith (++) . collectWords pgf
-
-prFullFormLexicon :: Morpho -> String
-prFullFormLexicon mo = 
-  unlines [w ++ " : " ++ prMorphoAnalysis ts | (w,ts) <- Map.assocs mo]
-
-prMorphoAnalysis :: [(Lemma,Analysis)] -> String
-prMorphoAnalysis lps = unlines [l ++ " " ++ p | (l,p) <- lps]
-
-type Lemma = String
+type Lemma = CId
 type Analysis = String
 
-noAnalysis :: [(Lemma,Analysis)]
-noAnalysis = []
+newtype Morpho = Morpho (Map.Map String [(Lemma,Analysis)])
 
+buildMorpho :: PGF -> Language -> Morpho
+buildMorpho pgf lang = Morpho (Map.fromListWith (++) (collectWords pgf lang))
+
+lookupMorpho :: Morpho -> String -> [(Lemma,Analysis)]
+lookupMorpho (Morpho mo) s = maybe [] id $ Map.lookup s mo
+
+fullFormLexicon :: Morpho -> [(String,[(Lemma,Analysis)])]
+fullFormLexicon (Morpho mo) = Map.toList mo