diff options
Diffstat (limited to 'plugins/extraction/haskell.ml')
| -rw-r--r-- | plugins/extraction/haskell.ml | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/plugins/extraction/haskell.ml b/plugins/extraction/haskell.ml index 5e08fef5..37b41420 100644 --- a/plugins/extraction/haskell.ml +++ b/plugins/extraction/haskell.ml @@ -26,7 +26,7 @@ let pr_upper_id id = str (String.capitalize (Id.to_string id)) let keywords = List.fold_right (fun s -> Id.Set.add (Id.of_string s)) - [ "case"; "class"; "data"; "default"; "deriving"; "do"; "else"; + [ "Any"; "case"; "class"; "data"; "default"; "deriving"; "do"; "else"; "if"; "import"; "in"; "infix"; "infixl"; "infixr"; "instance"; "let"; "module"; "newtype"; "of"; "then"; "type"; "where"; "_"; "__"; "as"; "qualified"; "hiding" ; "unit" ; "unsafeCoerce" ] @@ -38,7 +38,7 @@ let pp_bracket_comment s = str"{- " ++ hov 0 s ++ str" -}" let preamble mod_name comment used_modules usf = let pp_import mp = str ("import qualified "^ string_of_modfile mp ^"\n") in - (if not usf.magic then mt () + (if not (usf.magic || usf.tunknown) then mt () else str "{-# OPTIONS_GHC -cpp -XMagicHash #-}" ++ fnl () ++ str "{- For Hugs, use the option -F\"cpp -P -traditional\" -}") @@ -52,19 +52,36 @@ let preamble mod_name comment used_modules usf = str "import qualified Prelude" ++ fnl () ++ prlist pp_import used_modules ++ fnl () ++ (if List.is_empty used_modules then mt () else fnl ()) ++ - (if not usf.magic then mt () + (if not (usf.magic || usf.tunknown) then mt () else str "\ \n#ifdef __GLASGOW_HASKELL__\ \nimport qualified GHC.Base\ +\nimport qualified GHC.Prim\ +\n#else\ +\n-- HUGS\ +\nimport qualified IOExts\ +\n#endif" ++ fnl2 ()) + ++ + (if not usf.magic then mt () + else str "\ +\n#ifdef __GLASGOW_HASKELL__\ \nunsafeCoerce :: a -> b\ \nunsafeCoerce = GHC.Base.unsafeCoerce#\ \n#else\ \n-- HUGS\ -\nimport qualified IOExts\ \nunsafeCoerce :: a -> b\ \nunsafeCoerce = IOExts.unsafeCoerce\ \n#endif" ++ fnl2 ()) ++ + (if not usf.tunknown then mt () + else str "\ +\n#ifdef __GLASGOW_HASKELL__\ +\ntype Any = GHC.Prim.Any\ +\n#else\ +\n-- HUGS\ +\ntype Any = ()\ +\n#endif" ++ fnl2 ()) + ++ (if not usf.mldummy then mt () else str "__ :: any" ++ fnl () ++ str "__ = Prelude.error \"Logical or arity value used\"" ++ fnl2 ()) @@ -102,7 +119,7 @@ let rec pp_type par vl t = pp_par par (pp_rec true t1 ++ spc () ++ str "->" ++ spc () ++ pp_rec false t2) | Tdummy _ -> str "()" - | Tunknown -> str "()" + | Tunknown -> str "Any" | Taxiom -> str "() -- AXIOM TO BE REALIZED\n" in hov 0 (pp_rec par t) @@ -243,12 +260,12 @@ let pp_logical_ind packet = prvect_with_sep spc pr_id packet.ip_consnames) let pp_singleton kn packet = + let name = pp_global Type (IndRef (kn,0)) in let l = rename_tvars keywords packet.ip_vars in - let l' = List.rev l in - hov 2 (str "type " ++ pp_global Type (IndRef (kn,0)) ++ spc () ++ + hov 2 (str "type " ++ name ++ spc () ++ prlist_with_sep spc pr_id l ++ (if not (List.is_empty l) then str " " else mt ()) ++ str "=" ++ spc () ++ - pp_type false l' (List.hd packet.ip_types.(0)) ++ fnl () ++ + pp_type false l (List.hd packet.ip_types.(0)) ++ fnl () ++ pp_comment (str "singleton inductive, whose constructor was " ++ pr_id packet.ip_consnames.(0))) @@ -346,7 +363,7 @@ and pp_module_expr = function | MEfunctor _ -> mt () (* for the moment we simply discard unapplied functors *) | MEident _ | MEapply _ -> assert false - (* should be expansed in extract_env *) + (* should be expanded in extract_env *) let pp_struct = let pp_sel (mp,sel) = @@ -360,6 +377,7 @@ let pp_struct = let haskell_descr = { keywords = keywords; file_suffix = ".hs"; + file_naming = string_of_modfile; preamble = preamble; pp_struct = pp_struct; sig_suffix = None; |