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Bug fix for pattern macros in pre{}

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This bug was introduced sometime between 2013-08-21 and 2013-11-01 and caused
the function convertTerm in GF.Compile.GeneratePMCFG to encounter a EPatt where
it expected Strs. I fixed it by applying the function getPatts (from the old
partial evaluator) to the pattern.
This commit is contained in:
hallgren
2014-04-01 10:54:41 +00:00
parent 13d4e01ecb
commit 23c9a042cb
1 changed files with 14 additions and 1 deletions
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15
src/compiler/GF/Compile/GeneratePMCFG.hs
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@@ -397,8 +397,9 @@ convertTerm opts sel ctype (C t1 t2) = do v1 <- convertTerm opts sel ctype t1
convertTerm opts sel ctype (K t) = return (CStr [SymKS t])
convertTerm opts sel ctype Empty = return (CStr [])
convertTerm opts sel ctype (Alts s alts)= do CStr s <- convertTerm opts CNil ctype s
alts <- forM alts $ \(u,Strs ps) -> do
alts <- forM alts $ \(u,alt) -> do
CStr u <- convertTerm opts CNil ctype u
Strs ps <- unPatt alt
ps <- mapM (convertTerm opts CNil ctype) ps
return (u,map unSym ps)
return (CStr [SymKP s alts])
@@ -407,6 +408,18 @@ convertTerm opts sel ctype (Alts s alts)= do CStr s <- convertTerm opts CNil cty
unSym (CStr [SymKS t]) = t
unSym _ = ppbug $ hang (text "invalid prefix in pre expression:") 4 (ppU 0 (Alts s alts))
unPatt (EPatt p) = fmap Strs (getPatts p)
unPatt u = return u
getPatts p = case p of
PAlt a b -> liftM2 (++) (getPatts a) (getPatts b)
PString s -> return [K s]
PSeq a b -> do
as <- getPatts a
bs <- getPatts b
return [K (s ++ t) | K s <- as, K t <- bs]
_ -> fail (render (text "not valid pattern in pre expression" <+> ppPatt Unqualified 0 p))
convertTerm opts sel ctype (Q (m,f))
| m == cPredef &&
f == cNonExist = return (CStr [SymNE])