Moved parser building in the PGF interpreter to PGF.hs from PGF/Raw/Convert.hs, in preparation for doing something more clever about it (e.g. looking at the parser flag).

src/PGF.hs

@@ -69,6 +69,7 @@ import PGF.Raw.Parse
 import PGF.Raw.Print (printTree)
 import PGF.Parsing.FCFG
 import qualified PGF.Parsing.FCFG.Incremental as Incremental
+import qualified GF.Compile.GeneratePMCFG as PMCFG
 import GF.Text.UTF8
 
 import GF.Data.ErrM
@@ -204,7 +205,14 @@ complete :: PGF -> Language -> Category -> String
 readPGF f = do
   s <- readFile f >>= return . decodeUTF8 -- pgf is in UTF8, internal in unicode
   g <- parseGrammar s
-  return $! toPGF g
+  return $! addParsers $ toPGF g
+
+-- Adds parsers for all concretes that don't have a parser.
+addParsers :: PGF -> PGF
+addParsers pgf = pgf { concretes = Map.map conv (concretes pgf) }
+  where
+    conv cnc | isJust (parser cnc) = cnc
+             | otherwise = cnc { parser = Just (PMCFG.convertConcrete (abstract pgf) cnc) }
 
 linearize pgf lang = concat . take 1 . PGF.Linearize.linearizes pgf (mkCId lang)
 

src/PGF/Raw/Convert.hs

@@ -3,7 +3,6 @@ module PGF.Raw.Convert (toPGF,fromPGF) where
 import PGF.CId
 import PGF.Data
 import PGF.Raw.Abstract
-import qualified GF.Compile.GeneratePMCFG as PMCFG
 
 import Data.Array.IArray
 import qualified Data.Map    as Map
@@ -53,11 +52,7 @@ toConcr pgf rexp =
                               lindefs      = Map.empty,
                               printnames   = Map.empty,
                               paramlincats = Map.empty,
-                              parser       = Just (PMCFG.convertConcrete (abstract pgf) cnc)
-                                                                              -- This thunk will be overwritten if there is a parser
-                                                                              -- compiled in the PGF file. We use lazy evaluation here
-                                                                              -- to make sure that buildParserOnDemand is called only
-                                                                              -- if it is needed.
+                              parser       = Nothing
                              }) rexp
   in cnc
   where