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hs datatype generation for empty abstract types added

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aarne
2013-07-24 08:11:16 +00:00
parent 29ed8a8d48
commit e5a2cc40c0
1 changed files with 12 additions and 3 deletions
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15
src/compiler/GF/Compile/PGFtoHaskell.hs
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@@ -105,7 +105,7 @@ gfinstances gId lexical (m,g) = (foldr (+++++) "") $ (filter (/="")) $ (map (gfI
hDatatype :: Prefix -> (OIdent -> Bool) -> (OIdent, [(OIdent, [OIdent])]) -> String
hDatatype _ _ ("Cn",_) = "" ---
hDatatype _ _ (cat,[]) = ""
hDatatype gId _ (cat,[]) = "data" +++ gId cat
hDatatype gId _ (cat,rules) | isListCat (cat,rules) =
"newtype" +++ gId cat +++ "=" +++ gId cat +++ "[" ++ gId (elemCat cat) ++ "]"
+++ "deriving Show"
@@ -201,7 +201,13 @@ gfInstance :: Prefix -> (OIdent -> Bool) -> String -> (OIdent, [(OIdent, [OIdent
gfInstance gId lexical m crs = hInstance gId lexical m crs ++++ fInstance gId lexical m crs
----hInstance m ("Cn",_) = "" --- seems to belong to an old applic. AR 18/5/2004
hInstance _ _ m (cat,[]) = ""
hInstance gId _ m (cat,[]) = unlines [
"instance Show" +++ gId cat,
"",
"instance Gf" +++ gId cat +++ "where",
" gf _ = undefined",
" fg _ = undefined"
]
hInstance gId lexical m (cat,rules)
| isListCat (cat,rules) =
"instance Gf" +++ gId cat +++ "where" ++++
@@ -257,10 +263,13 @@ fInstance gId lexical m (cat,rules) =
hSkeleton :: PGF -> (String,HSkeleton)
hSkeleton gr =
(showCId (absname gr),
[(showCId c, [(showCId f, map showCId cs) | (f, (cs,_)) <- fs]) |
let fs =
[(showCId c, [(showCId f, map showCId cs) | (f, (cs,_)) <- fs]) |
fs@((_, (_,c)):_) <- fns]
in fs ++ [(sc, []) | c <- cts, let sc = showCId c, notElem sc (["Int", "Float", "String"] ++ map fst fs)]
)
where
cts = Map.keys (cats (abstract gr))
fns = groupBy valtypg (sortBy valtyps (map jty (Map.assocs (funs (abstract gr)))))
valtyps (_, (_,x)) (_, (_,y)) = compare x y
valtypg (_, (_,x)) (_, (_,y)) = x == y