String pattern handling

src/GF/Compile/CheckGrammar.hs

@@ -416,6 +416,8 @@ inferLType gr trm = case trm of
      PP _ _ ps -> True --- all isConstPatt ps
      PR ps -> all (isConstPatt . snd) ps
      PT _ p -> isConstPatt p
+     PString _ -> True
+     PInt _ -> True
      _ -> False
 
    inferPatt p = case p of

src/GF/Grammar/AppPredefined.hs

@@ -6,8 +6,9 @@ import Ident
 import PrGrammar (prt)
 ---- import PGrammar (pTrm)
 
--- predefined function definitions. AR 12/3/2003.
--- Type checker looks at signatures in predefined.gf
+-- predefined function type signatures and definitions. AR 12/3/2003.
+
+---- typPredefined :: Term -> Err Type
 
 appPredefined :: Term -> Term
 appPredefined t = case t of

src/GF/Grammar/PatternMatch.hs

@@ -77,6 +77,7 @@ isInConstantForm trm = case trm of
     Abs _ _  -> True
     App c a  -> isInConstantForm c && isInConstantForm a
     R r      -> all (isInConstantForm . snd . snd) r
+    K _      -> True
     Alias _ _ t -> isInConstantForm t
     _       -> False ---- isInArgVarForm trm
 

src/GF/Source/GrammarToSource.hs

@@ -163,6 +163,7 @@ trp p = case p of
     PP p c [] -> P.PQ (tri p) (tri c)
     PP p c a -> P.PQC (tri p) (tri c) (map trp a)
     PR r -> P.PR [P.PA [trLabelIdent l] (trp p) | (l,p) <- r]
+    PString s -> P.PStr s
 ----    PT t p -> prt p ---- prParenth (prt p +++ ":" +++ prt t)
 
 

src/Today.hs

@@ -1 +1 @@
-module Today where today = "Mon Mar  1 10:50:38 CET 2004"
+module Today where today = "Tue Mar 23 10:59:42 CET 2004"