X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2Ftypecheck%2FTcGenDeriv.lhs;h=4587e182c01b264c4e826f91afb087a16f6ade20;hb=2494407a750053daa61718fac371487d04818e57;hp=cf7eb327458afd340eddead289ab03b52553e06b;hpb=5cf27e8f1731c52fe63a5b9615f927484164c61b;p=ghc-hetmet.git diff --git a/ghc/compiler/typecheck/TcGenDeriv.lhs b/ghc/compiler/typecheck/TcGenDeriv.lhs index cf7eb32..4587e18 100644 --- a/ghc/compiler/typecheck/TcGenDeriv.lhs +++ b/ghc/compiler/typecheck/TcGenDeriv.lhs @@ -11,94 +11,59 @@ This is where we do all the grimy bindings' generation. \begin{code} #include "HsVersions.h" -module TcGenDeriv {- ( - a_Expr, - a_PN, - a_Pat, - ah_PN, - b_Expr, - b_PN, - b_Pat, - bh_PN, - c_Expr, - c_PN, - c_Pat, - ch_PN, - cmp_eq_PN, - d_Expr, - d_PN, - d_Pat, - dh_PN, - eqH_PN, - eqTag_Expr, - eq_PN, - error_PN, - false_Expr, - false_PN, - geH_PN, - gen_Binary_binds, +module TcGenDeriv ( + gen_Bounded_binds, gen_Enum_binds, + gen_Eval_binds, gen_Eq_binds, gen_Ix_binds, gen_Ord_binds, gen_Read_binds, gen_Show_binds, gen_tag_n_con_monobind, - gtTag_Expr, - gt_PN, - leH_PN, - ltH_PN, - ltTag_Expr, - lt_PN, - minusH_PN, - mkInt_PN, - rangeSize_PN, - true_Expr, - true_PN, - - con2tag_FN, tag2con_FN, maxtag_FN, - con2tag_PN, tag2con_PN, maxtag_PN, + + con2tag_RDR, tag2con_RDR, maxtag_RDR, TagThingWanted(..) - ) -} where + ) where -import Ubiq +IMP_Ubiq() +IMPORT_1_3(List(partition)) import HsSyn ( HsBinds(..), Bind(..), MonoBinds(..), Match(..), GRHSsAndBinds(..), - GRHS(..), HsExpr(..), HsLit(..), InPat(..), Qual(..), Stmt, - ArithSeqInfo, Sig, PolyType, FixityDecl, Fake ) -import RdrHsSyn ( RdrNameMonoBinds(..), RdrNameHsExpr(..), RdrNamePat(..) ) -import RnHsSyn ( RnName(..), RenamedFixityDecl(..) ) - ---import RnMonad4 -- initRn4, etc. -import RnUtils - -import Id ( GenId, dataConArity, dataConTag, - dataConSig, fIRST_TAG, - isDataCon, DataCon(..), ConTag(..) ) -import IdUtils ( primOpId ) + GRHS(..), HsExpr(..), HsLit(..), InPat(..), Stmt(..), DoOrListComp(..), + ArithSeqInfo, Sig, HsType, FixityDecl, Fixity, Fake ) +import RdrHsSyn ( RdrName(..), varQual, varUnqual, mkOpApp, + SYN_IE(RdrNameMonoBinds), SYN_IE(RdrNameHsExpr), SYN_IE(RdrNamePat) + ) +-- import RnHsSyn ( RenamedFixityDecl(..) ) + +import Id ( GenId, dataConNumFields, isNullaryDataCon, dataConTag, + dataConRawArgTys, fIRST_TAG, + isDataCon, SYN_IE(DataCon), SYN_IE(ConTag) ) import Maybes ( maybeToBool ) ---import Name ( Name(..) ) -import Outputable -import PrimOp -import PrelInfo -import Pretty +import Name ( getOccString, getOccName, getSrcLoc, occNameString, modAndOcc, OccName, Name ) + +import PrimOp ( PrimOp(..) ) +import PrelInfo -- Lots of RdrNames import SrcLoc ( mkGeneratedSrcLoc ) import TyCon ( TyCon, tyConDataCons, isEnumerationTyCon, maybeTyConSingleCon ) import Type ( eqTy, isPrimType ) -import Unique -import Util +import TysPrim ( charPrimTy, intPrimTy, wordPrimTy, addrPrimTy, + floatPrimTy, doublePrimTy + ) +import Util ( mapAccumL, zipEqual, zipWith3Equal, nOfThem, panic, assertPanic ) \end{code} %************************************************************************ %* * -\subsection[TcGenDeriv-classes]{Generating code, by derivable class} +\subsection{Generating code, by derivable class} %* * %************************************************************************ %************************************************************************ %* * -\subsubsection[TcGenDeriv-Eq]{Generating @Eq@ instance declarations} +\subsubsection{Generating @Eq@ instance declarations} %* * %************************************************************************ @@ -170,62 +135,54 @@ instance ... Eq (Foo ...) where \end{itemize} \begin{code} -foo_TcGenDeriv = panic "Nothing in TcGenDeriv LATER ToDo" - -{- LATER: gen_Eq_binds :: TyCon -> RdrNameMonoBinds gen_Eq_binds tycon - = case (partition (\ con -> dataConArity con == 0) - (tyConDataCons tycon)) - of { (nullary_cons, nonnullary_cons) -> - let + = let + tycon_loc = getSrcLoc tycon + (nullary_cons, nonnullary_cons) + = partition isNullaryDataCon (tyConDataCons tycon) + rest - = if null nullary_cons then + = if (null nullary_cons) then case maybeTyConSingleCon tycon of Just _ -> [] Nothing -> -- if cons don't match, then False [([a_Pat, b_Pat], false_Expr)] else -- calc. and compare the tags [([a_Pat, b_Pat], - untag_Expr tycon [(a_PN,ah_PN), (b_PN,bh_PN)] - (cmp_tags_Expr eqH_PN ah_PN bh_PN true_Expr false_Expr))] + untag_Expr tycon [(a_RDR,ah_RDR), (b_RDR,bh_RDR)] + (cmp_tags_Expr eqH_Int_RDR ah_RDR bh_RDR true_Expr false_Expr))] in - mk_FunMonoBind eq_PN ((map pats_etc nonnullary_cons) ++ rest) - `AndMonoBinds` boring_ne_method - } + mk_FunMonoBind tycon_loc eq_RDR ((map pats_etc nonnullary_cons) ++ rest) + `AndMonoBinds` + mk_easy_FunMonoBind tycon_loc ne_RDR [a_Pat, b_Pat] [] ( + HsApp (HsVar not_RDR) (HsPar (mk_easy_App eq_RDR [a_RDR, b_RDR]))) where ------------------------------------------------------------------ pats_etc data_con = let - con1_pat = ConPatIn data_con_PN (map VarPatIn as_needed) - con2_pat = ConPatIn data_con_PN (map VarPatIn bs_needed) - - data_con_PN = Prel (WiredInId data_con) - as_needed = take (dataConArity data_con) as_PNs - bs_needed = take (dataConArity data_con) bs_PNs - tys_needed = case (dataConSig data_con) of - (_,_, arg_tys, _) -> arg_tys + con1_pat = ConPatIn data_con_RDR (map VarPatIn as_needed) + con2_pat = ConPatIn data_con_RDR (map VarPatIn bs_needed) + + data_con_RDR = qual_orig_name data_con + con_arity = length tys_needed + as_needed = take con_arity as_RDRs + bs_needed = take con_arity bs_RDRs + tys_needed = dataConRawArgTys data_con in ([con1_pat, con2_pat], nested_eq_expr tys_needed as_needed bs_needed) where - nested_eq_expr [] [] [] = true_Expr - nested_eq_expr [ty] [a] [b] = eq_Expr ty (HsVar a) (HsVar b) - nested_eq_expr (t:ts) (a:as) (b:bs) - = let - rest_expr = nested_eq_expr ts as bs - in - and_Expr (eq_Expr t (HsVar a) (HsVar b)) rest_expr - -boring_ne_method - = mk_easy_FunMonoBind ne_PN [a_Pat, b_Pat] [] ( - HsApp (HsVar not_PN) (HsApp (HsApp (HsVar eq_PN) a_Expr) b_Expr) - ) + nested_eq_expr [] [] [] = true_Expr + nested_eq_expr tys as bs + = foldl1 and_Expr (zipWith3Equal "nested_eq" nested_eq tys as bs) + where + nested_eq ty a b = HsPar (eq_Expr ty (HsVar a) (HsVar b)) \end{code} %************************************************************************ %* * -\subsubsection[TcGenDeriv-Ord]{Generating @Ord@ instance declarations} +\subsubsection{Generating @Ord@ instance declarations} %* * %************************************************************************ @@ -245,13 +202,13 @@ data Foo ... = N1 | N2 ... | Nn | O1 a b | O2 Int | O3 Double b b | ... We do all the other @Ord@ methods with calls to @compare@: \begin{verbatim} instance ... (Ord ) where - a < b = case compare a b of { LT -> True; EQ -> False; GT -> False } - a <= b = case compare a b of { LT -> True; EQ -> True; GT -> False } - a >= b = case compare a b of { LT -> False; EQ -> True; GT -> True } - a > b = case compare a b of { LT -> False; EQ -> False; GT -> True } + a < b = case (compare a b) of { LT -> True; EQ -> False; GT -> False } + a <= b = case (compare a b) of { LT -> True; EQ -> True; GT -> False } + a >= b = case (compare a b) of { LT -> False; EQ -> True; GT -> True } + a > b = case (compare a b) of { LT -> False; EQ -> False; GT -> True } - max a b = case compare a b of { LT -> b; EQ -> a; GT -> a } - min a b = case compare a b of { LT -> a; EQ -> b; GT -> b } + max a b = case (compare a b) of { LT -> b; EQ -> a; GT -> a } + min a b = case (compare a b) of { LT -> a; EQ -> b; GT -> b } -- compare to come... \end{verbatim} @@ -263,7 +220,7 @@ instance ... (Ord ) where \begin{verbatim} compare a b = case (con2tag_Foo a) of { a# -> case (con2tag_Foo b) of { b# -> - case (a# ==# b#) of { + case (a# ==# b#) of { True -> cmp_eq a b False -> case (a# <# b#) of True -> _LT @@ -321,15 +278,16 @@ gen_Ord_binds :: TyCon -> RdrNameMonoBinds gen_Ord_binds tycon = defaulted `AndMonoBinds` compare where + tycon_loc = getSrcLoc tycon -------------------------------------------------------------------- - compare = mk_easy_FunMonoBind compare_PN + compare = mk_easy_FunMonoBind tycon_loc compare_RDR [a_Pat, b_Pat] [cmp_eq] (if maybeToBool (maybeTyConSingleCon tycon) then cmp_eq_Expr ltTag_Expr eqTag_Expr gtTag_Expr a_Expr b_Expr else - untag_Expr tycon [(a_PN, ah_PN), (b_PN, bh_PN)] - (cmp_tags_Expr eqH_PN ah_PN bh_PN + untag_Expr tycon [(a_RDR, ah_RDR), (b_RDR, bh_RDR)] + (cmp_tags_Expr eqH_Int_RDR ah_RDR bh_RDR -- True case; they are equal -- If an enumeration type we are done; else -- recursively compare their components @@ -340,26 +298,27 @@ gen_Ord_binds tycon ) -- False case; they aren't equal -- So we need to do a less-than comparison on the tags - (cmp_tags_Expr ltH_PN ah_PN bh_PN ltTag_Expr gtTag_Expr))) + (cmp_tags_Expr ltH_Int_RDR ah_RDR bh_RDR ltTag_Expr gtTag_Expr))) (nullary_cons, nonnullary_cons) - = partition (\ con -> dataConArity con == 0) (tyConDataCons tycon) + = partition isNullaryDataCon (tyConDataCons tycon) cmp_eq - = mk_FunMonoBind cmp_eq_PN (map pats_etc nonnullary_cons ++ deflt_pats_etc) + = mk_FunMonoBind tycon_loc cmp_eq_RDR (map pats_etc nonnullary_cons ++ + [([WildPatIn, WildPatIn], default_rhs)]) where pats_etc data_con = ([con1_pat, con2_pat], nested_compare_expr tys_needed as_needed bs_needed) where - con1_pat = ConPatIn data_con_PN (map VarPatIn as_needed) - con2_pat = ConPatIn data_con_PN (map VarPatIn bs_needed) + con1_pat = ConPatIn data_con_RDR (map VarPatIn as_needed) + con2_pat = ConPatIn data_con_RDR (map VarPatIn bs_needed) - data_con_PN = Prel (WiredInId data_con) - as_needed = take (dataConArity data_con) as_PNs - bs_needed = take (dataConArity data_con) bs_PNs - tys_needed = case (dataConSig data_con) of - (_,_, arg_tys, _) -> arg_tys + data_con_RDR = qual_orig_name data_con + con_arity = length tys_needed + as_needed = take con_arity as_RDRs + bs_needed = take con_arity bs_RDRs + tys_needed = dataConRawArgTys data_con nested_compare_expr [ty] [a] [b] = careful_compare_Case ty ltTag_Expr eqTag_Expr gtTag_Expr (HsVar a) (HsVar b) @@ -368,32 +327,32 @@ gen_Ord_binds tycon = let eq_expr = nested_compare_expr tys as bs in careful_compare_Case ty ltTag_Expr eq_expr gtTag_Expr (HsVar a) (HsVar b) - deflt_pats_etc - = if null nullary_cons - then [] - else [([a_Pat, b_Pat], eqTag_Expr)] + default_rhs | null nullary_cons = impossible_Expr -- Keep desugarer from complaining about + -- inexhaustive patterns + | otherwise = eqTag_Expr -- Some nullary constructors; + -- Tags are equal, no args => return EQ -------------------------------------------------------------------- defaulted = foldr1 AndMonoBinds [lt, le, ge, gt, max_, min_] -lt = mk_easy_FunMonoBind lt_PN [a_Pat, b_Pat] [] ( +lt = mk_easy_FunMonoBind mkGeneratedSrcLoc lt_RDR [a_Pat, b_Pat] [] ( compare_Case true_Expr false_Expr false_Expr a_Expr b_Expr) -le = mk_easy_FunMonoBind le_PN [a_Pat, b_Pat] [] ( +le = mk_easy_FunMonoBind mkGeneratedSrcLoc le_RDR [a_Pat, b_Pat] [] ( compare_Case true_Expr true_Expr false_Expr a_Expr b_Expr) -ge = mk_easy_FunMonoBind ge_PN [a_Pat, b_Pat] [] ( +ge = mk_easy_FunMonoBind mkGeneratedSrcLoc ge_RDR [a_Pat, b_Pat] [] ( compare_Case false_Expr true_Expr true_Expr a_Expr b_Expr) -gt = mk_easy_FunMonoBind gt_PN [a_Pat, b_Pat] [] ( +gt = mk_easy_FunMonoBind mkGeneratedSrcLoc gt_RDR [a_Pat, b_Pat] [] ( compare_Case false_Expr false_Expr true_Expr a_Expr b_Expr) -max_ = mk_easy_FunMonoBind max_PN [a_Pat, b_Pat] [] ( +max_ = mk_easy_FunMonoBind mkGeneratedSrcLoc max_RDR [a_Pat, b_Pat] [] ( compare_Case b_Expr a_Expr a_Expr a_Expr b_Expr) -min_ = mk_easy_FunMonoBind min_PN [a_Pat, b_Pat] [] ( +min_ = mk_easy_FunMonoBind mkGeneratedSrcLoc min_RDR [a_Pat, b_Pat] [] ( compare_Case a_Expr b_Expr b_Expr a_Expr b_Expr) \end{code} %************************************************************************ %* * -\subsubsection[TcGenDeriv-Enum]{Generating @Enum@ instance declarations} +\subsubsection{Generating @Enum@ instance declarations} %* * %************************************************************************ @@ -407,6 +366,8 @@ we use both @con2tag_Foo@ and @tag2con_Foo@ functions, as well as a \begin{verbatim} instance ... Enum (Foo ...) where + toEnum i = tag2con_Foo i + enumFrom a = map tag2con_Foo [con2tag_Foo a .. maxtag_Foo] -- or, really... @@ -431,29 +392,88 @@ For @enumFromTo@ and @enumFromThenTo@, we use the default methods. gen_Enum_binds :: TyCon -> RdrNameMonoBinds gen_Enum_binds tycon - = enum_from `AndMonoBinds` enum_from_then + = to_enum `AndMonoBinds` + enum_from `AndMonoBinds` + enum_from_then `AndMonoBinds` + from_enum where + tycon_loc = getSrcLoc tycon + + to_enum + = mk_easy_FunMonoBind tycon_loc toEnum_RDR [a_Pat] [] $ + mk_easy_App (tag2con_RDR tycon) [a_RDR] + enum_from - = mk_easy_FunMonoBind enumFrom_PN [a_Pat] [] ( - untag_Expr tycon [(a_PN, ah_PN)] ( - HsApp (HsApp (HsVar map_PN) (HsVar (tag2con_PN tycon))) ( - enum_from_to_Expr - (HsApp (HsVar mkInt_PN) (HsVar ah_PN)) - (HsVar (maxtag_PN tycon))))) + = mk_easy_FunMonoBind tycon_loc enumFrom_RDR [a_Pat] [] $ + untag_Expr tycon [(a_RDR, ah_RDR)] $ + HsApp (mk_easy_App map_RDR [tag2con_RDR tycon]) $ + HsPar (enum_from_to_Expr + (mk_easy_App mkInt_RDR [ah_RDR]) + (HsVar (maxtag_RDR tycon))) enum_from_then - = mk_easy_FunMonoBind enumFromThen_PN [a_Pat, b_Pat] [] ( - untag_Expr tycon [(a_PN, ah_PN), (b_PN, bh_PN)] ( - HsApp (HsApp (HsVar map_PN) (HsVar (tag2con_PN tycon))) ( - enum_from_then_to_Expr - (HsApp (HsVar mkInt_PN) (HsVar ah_PN)) - (HsApp (HsVar mkInt_PN) (HsVar bh_PN)) - (HsVar (maxtag_PN tycon))))) + = mk_easy_FunMonoBind tycon_loc enumFromThen_RDR [a_Pat, b_Pat] [] $ + untag_Expr tycon [(a_RDR, ah_RDR), (b_RDR, bh_RDR)] $ + HsApp (mk_easy_App map_RDR [tag2con_RDR tycon]) $ + HsPar (enum_from_then_to_Expr + (mk_easy_App mkInt_RDR [ah_RDR]) + (mk_easy_App mkInt_RDR [bh_RDR]) + (HsVar (maxtag_RDR tycon))) + + from_enum + = mk_easy_FunMonoBind tycon_loc fromEnum_RDR [a_Pat] [] $ + untag_Expr tycon [(a_RDR, ah_RDR)] $ + (mk_easy_App mkInt_RDR [ah_RDR]) +\end{code} + +%************************************************************************ +%* * +\subsubsection{Generating @Eval@ instance declarations} +%* * +%************************************************************************ + +\begin{code} +gen_Eval_binds tycon = EmptyMonoBinds \end{code} %************************************************************************ %* * -\subsubsection[TcGenDeriv-Ix]{Generating @Ix@ instance declarations} +\subsubsection{Generating @Bounded@ instance declarations} +%* * +%************************************************************************ + +\begin{code} +gen_Bounded_binds tycon + = if isEnumerationTyCon tycon then + min_bound_enum `AndMonoBinds` max_bound_enum + else + ASSERT(length data_cons == 1) + min_bound_1con `AndMonoBinds` max_bound_1con + where + data_cons = tyConDataCons tycon + tycon_loc = getSrcLoc tycon + + ----- enum-flavored: --------------------------- + min_bound_enum = mk_easy_FunMonoBind tycon_loc minBound_RDR [] [] (HsVar data_con_1_RDR) + max_bound_enum = mk_easy_FunMonoBind tycon_loc maxBound_RDR [] [] (HsVar data_con_N_RDR) + + data_con_1 = head data_cons + data_con_N = last data_cons + data_con_1_RDR = qual_orig_name data_con_1 + data_con_N_RDR = qual_orig_name data_con_N + + ----- single-constructor-flavored: ------------- + arity = dataConNumFields data_con_1 + + min_bound_1con = mk_easy_FunMonoBind tycon_loc minBound_RDR [] [] $ + mk_easy_App data_con_1_RDR (nOfThem arity minBound_RDR) + max_bound_1con = mk_easy_FunMonoBind tycon_loc maxBound_RDR [] [] $ + mk_easy_App data_con_1_RDR (nOfThem arity maxBound_RDR) +\end{code} + +%************************************************************************ +%* * +\subsubsection{Generating @Ix@ instance declarations} %* * %************************************************************************ @@ -517,51 +537,51 @@ gen_Ix_binds tycon then enum_ixes else single_con_ixes where - tycon_str = _UNPK_ (snd (moduleNamePair tycon)) + tycon_str = getOccString tycon + tycon_loc = getSrcLoc tycon -------------------------------------------------------------- enum_ixes = enum_range `AndMonoBinds` enum_index `AndMonoBinds` enum_inRange enum_range - = mk_easy_FunMonoBind range_PN [TuplePatIn [a_Pat, b_Pat]] [] ( - untag_Expr tycon [(a_PN, ah_PN)] ( - untag_Expr tycon [(b_PN, bh_PN)] ( - HsApp (HsApp (HsVar map_PN) (HsVar (tag2con_PN tycon))) ( - enum_from_to_Expr - (HsApp (HsVar mkInt_PN) (HsVar ah_PN)) - (HsApp (HsVar mkInt_PN) (HsVar bh_PN)) - )))) + = mk_easy_FunMonoBind tycon_loc range_RDR [TuplePatIn [a_Pat, b_Pat]] [] $ + untag_Expr tycon [(a_RDR, ah_RDR)] $ + untag_Expr tycon [(b_RDR, bh_RDR)] $ + HsApp (mk_easy_App map_RDR [tag2con_RDR tycon]) $ + HsPar (enum_from_to_Expr + (mk_easy_App mkInt_RDR [ah_RDR]) + (mk_easy_App mkInt_RDR [bh_RDR])) enum_index - = mk_easy_FunMonoBind index_PN [AsPatIn c_PN (TuplePatIn [a_Pat, b_Pat]), d_Pat] [] ( - HsIf (HsApp (HsApp (HsVar inRange_PN) c_Expr) d_Expr) ( - untag_Expr tycon [(a_PN, ah_PN)] ( - untag_Expr tycon [(d_PN, dh_PN)] ( + = mk_easy_FunMonoBind tycon_loc index_RDR [AsPatIn c_RDR (TuplePatIn [a_Pat, b_Pat]), d_Pat] [] ( + HsIf (HsPar (mk_easy_App inRange_RDR [c_RDR, d_RDR])) ( + untag_Expr tycon [(a_RDR, ah_RDR)] ( + untag_Expr tycon [(d_RDR, dh_RDR)] ( let - grhs = [OtherwiseGRHS (HsApp (HsVar mkInt_PN) (HsVar c_PN)) mkGeneratedSrcLoc] + grhs = [OtherwiseGRHS (mk_easy_App mkInt_RDR [c_RDR]) tycon_loc] in HsCase - (OpApp (HsVar dh_PN) (HsVar minusH_PN) (HsVar ah_PN)) - [PatMatch (VarPatIn c_PN) + (genOpApp (HsVar dh_RDR) minusH_RDR (HsVar ah_RDR)) + [PatMatch (VarPatIn c_RDR) (GRHSMatch (GRHSsAndBindsIn grhs EmptyBinds))] - mkGeneratedSrcLoc + tycon_loc )) ) {-else-} ( - HsApp (HsVar error_PN) (HsLit (HsString (_PK_ ("Ix."++tycon_str++".index: out of range\n")))) + HsApp (HsVar error_RDR) (HsLit (HsString (_PK_ ("Ix."++tycon_str++".index: out of range\n")))) ) - mkGeneratedSrcLoc) + tycon_loc) enum_inRange - = mk_easy_FunMonoBind inRange_PN [TuplePatIn [a_Pat, b_Pat], c_Pat] [] ( - untag_Expr tycon [(a_PN, ah_PN)] ( - untag_Expr tycon [(b_PN, bh_PN)] ( - untag_Expr tycon [(c_PN, ch_PN)] ( - HsIf (OpApp (HsVar ch_PN) (HsVar geH_PN) (HsVar ah_PN)) ( - (OpApp (HsVar ch_PN) (HsVar leH_PN) (HsVar bh_PN)) + = mk_easy_FunMonoBind tycon_loc inRange_RDR [TuplePatIn [a_Pat, b_Pat], c_Pat] [] ( + untag_Expr tycon [(a_RDR, ah_RDR)] ( + untag_Expr tycon [(b_RDR, bh_RDR)] ( + untag_Expr tycon [(c_RDR, ch_RDR)] ( + HsIf (genOpApp (HsVar ch_RDR) geH_RDR (HsVar ah_RDR)) ( + (genOpApp (HsVar ch_RDR) leH_RDR (HsVar bh_RDR)) ) {-else-} ( false_Expr - ) mkGeneratedSrcLoc)))) + ) tycon_loc)))) -------------------------------------------------------------- single_con_ixes = single_con_range `AndMonoBinds` @@ -570,152 +590,176 @@ gen_Ix_binds tycon data_con = case maybeTyConSingleCon tycon of -- just checking... Nothing -> panic "get_Ix_binds" - Just dc -> let - (_, _, arg_tys, _) = dataConSig dc - in - if any isPrimType arg_tys then + Just dc -> if (any isPrimType (dataConRawArgTys dc)) then error ("ERROR: Can't derive Ix for a single-constructor type with primitive argument types: "++tycon_str) else dc - con_arity = dataConArity data_con - data_con_PN = Prel (WiredInId data_con) - con_pat xs = ConPatIn data_con_PN (map VarPatIn xs) - con_expr xs = foldl HsApp (HsVar data_con_PN) (map HsVar xs) + con_arity = dataConNumFields data_con + data_con_RDR = qual_orig_name data_con + con_pat xs = ConPatIn data_con_RDR (map VarPatIn xs) + con_expr xs = mk_easy_App data_con_RDR xs - as_needed = take (dataConArity data_con) as_PNs - bs_needed = take (dataConArity data_con) bs_PNs - cs_needed = take (dataConArity data_con) cs_PNs + as_needed = take con_arity as_RDRs + bs_needed = take con_arity bs_RDRs + cs_needed = take con_arity cs_RDRs -------------------------------------------------------------- single_con_range - = mk_easy_FunMonoBind range_PN [TuplePatIn [con_pat as_needed, con_pat bs_needed]] [] ( - ListComp (con_expr cs_needed) (zipWith3Equal "single_con_range" mk_qual as_needed bs_needed cs_needed) - ) + = mk_easy_FunMonoBind tycon_loc range_RDR [TuplePatIn [con_pat as_needed, con_pat bs_needed]] [] $ + HsDo ListComp stmts tycon_loc where - mk_qual a b c = GeneratorQual (VarPatIn c) - (HsApp (HsVar range_PN) (ExplicitTuple [HsVar a, HsVar b])) + stmts = zipWith3Equal "single_con_range" mk_qual as_needed bs_needed cs_needed + ++ + [ReturnStmt (con_expr cs_needed)] + + mk_qual a b c = BindStmt (VarPatIn c) + (HsApp (HsVar range_RDR) (ExplicitTuple [HsVar a, HsVar b])) + tycon_loc ---------------- single_con_index - = mk_easy_FunMonoBind index_PN [TuplePatIn [con_pat as_needed, con_pat bs_needed], con_pat cs_needed] [range_size] ( + = mk_easy_FunMonoBind tycon_loc index_RDR [TuplePatIn [con_pat as_needed, con_pat bs_needed], con_pat cs_needed] [range_size] ( foldl mk_index (HsLit (HsInt 0)) (zip3 as_needed bs_needed cs_needed)) where mk_index multiply_by (l, u, i) - =OpApp ( - (HsApp (HsApp (HsVar index_PN) (ExplicitTuple [HsVar l, HsVar u])) (HsVar i)) - ) (HsVar plus_PN) ( - OpApp ( - (HsApp (HsVar rangeSize_PN) (ExplicitTuple [HsVar l, HsVar u])) - ) (HsVar times_PN) multiply_by + = genOpApp ( + (HsApp (HsApp (HsVar index_RDR) (ExplicitTuple [HsVar l, HsVar u])) (HsVar i)) + ) plus_RDR ( + genOpApp ( + (HsApp (HsVar rangeSize_RDR) (ExplicitTuple [HsVar l, HsVar u])) + ) times_RDR multiply_by ) range_size - = mk_easy_FunMonoBind rangeSize_PN [TuplePatIn [a_Pat, b_Pat]] [] ( - OpApp ( - (HsApp (HsApp (HsVar index_PN) (ExplicitTuple [a_Expr, b_Expr])) b_Expr) - ) (HsVar plus_PN) (HsLit (HsInt 1))) + = mk_easy_FunMonoBind tycon_loc rangeSize_RDR [TuplePatIn [a_Pat, b_Pat]] [] ( + genOpApp ( + (HsApp (HsApp (HsVar index_RDR) (ExplicitTuple [a_Expr, b_Expr])) b_Expr) + ) plus_RDR (HsLit (HsInt 1))) ------------------ single_con_inRange - = mk_easy_FunMonoBind inRange_PN [TuplePatIn [con_pat as_needed, con_pat bs_needed], con_pat cs_needed] [] ( + = mk_easy_FunMonoBind tycon_loc inRange_RDR + [TuplePatIn [con_pat as_needed, con_pat bs_needed], con_pat cs_needed] + [] ( foldl1 and_Expr (zipWith3Equal "single_con_inRange" in_range as_needed bs_needed cs_needed)) where - in_range a b c = HsApp (HsApp (HsVar inRange_PN) (ExplicitTuple [HsVar a, HsVar b])) (HsVar c) + in_range a b c = HsApp (HsApp (HsVar inRange_RDR) (ExplicitTuple [HsVar a, HsVar b])) (HsVar c) \end{code} %************************************************************************ %* * -\subsubsection[TcGenDeriv-Text]{Generating @Show@ and @Read@ instance declarations} +\subsubsection{Generating @Read@ instance declarations} %* * %************************************************************************ Ignoring all the infix-ery mumbo jumbo (ToDo) \begin{code} -gen_Read_binds :: [RenamedFixityDecl] -> TyCon -> RdrNameMonoBinds -gen_Show_binds :: [RenamedFixityDecl] -> TyCon -> RdrNameMonoBinds +gen_Read_binds :: TyCon -> RdrNameMonoBinds -gen_Read_binds fixities tycon +gen_Read_binds tycon = reads_prec `AndMonoBinds` read_list where + tycon_loc = getSrcLoc tycon ----------------------------------------------------------------------- - read_list = mk_easy_FunMonoBind readList_PN [] [] - (HsApp (HsVar _readList_PN) (HsApp (HsVar readsPrec_PN) (HsLit (HsInt 0)))) + read_list = mk_easy_FunMonoBind tycon_loc readList_RDR [] [] + (HsApp (HsVar readList___RDR) (HsPar (HsApp (HsVar readsPrec_RDR) (HsLit (HsInt 0))))) ----------------------------------------------------------------------- reads_prec = let read_con_comprehensions = map read_con (tyConDataCons tycon) in - mk_easy_FunMonoBind readsPrec_PN [a_Pat, b_Pat] [] ( - foldl1 append_Expr read_con_comprehensions + mk_easy_FunMonoBind tycon_loc readsPrec_RDR [a_Pat, b_Pat] [] ( + foldr1 append_Expr read_con_comprehensions ) where read_con data_con -- note: "b" is the string being "read" = let - data_con_PN = Prel (WiredInId data_con) - data_con_str= snd (moduleNamePair data_con) - as_needed = take (dataConArity data_con) as_PNs - bs_needed = take (dataConArity data_con) bs_PNs - con_expr = foldl HsApp (HsVar data_con_PN) (map HsVar as_needed) - nullary_con = dataConArity data_con == 0 + data_con_RDR = qual_orig_name data_con + data_con_str= occNameString (getOccName data_con) + con_arity = dataConNumFields data_con + as_needed = take con_arity as_RDRs + bs_needed = take con_arity bs_RDRs + con_expr = mk_easy_App data_con_RDR as_needed + nullary_con = isNullaryDataCon data_con con_qual - = GeneratorQual + = BindStmt (TuplePatIn [LitPatIn (HsString data_con_str), d_Pat]) - (HsApp (HsVar lex_PN) c_Expr) + (HsApp (HsVar lex_RDR) c_Expr) + tycon_loc field_quals = snd (mapAccumL mk_qual d_Expr (zipEqual "as_needed" as_needed bs_needed)) + mk_qual draw_from (con_field, str_left) + = (HsVar str_left, -- what to draw from down the line... + BindStmt + (TuplePatIn [VarPatIn con_field, VarPatIn str_left]) + (HsApp (HsApp (HsVar readsPrec_RDR) (HsLit (HsInt 10))) draw_from) + tycon_loc + ) + + result_expr = ExplicitTuple [con_expr, if null bs_needed + then d_Expr + else HsVar (last bs_needed)] + + stmts = (con_qual : field_quals) ++ [ReturnStmt result_expr] + read_paren_arg = if nullary_con then -- must be False (parens are surely optional) false_Expr else -- parens depend on precedence... - OpApp a_Expr (HsVar gt_PN) (HsLit (HsInt 9)) + HsPar (genOpApp a_Expr gt_RDR (HsLit (HsInt 9))) in HsApp ( - readParen_Expr read_paren_arg ( - HsLam (mk_easy_Match [c_Pat] [] ( - ListComp (ExplicitTuple [con_expr, - if null bs_needed then d_Expr else HsVar (last bs_needed)]) - (con_qual : field_quals))) - )) (HsVar b_PN) - where - mk_qual draw_from (con_field, str_left) - = (HsVar str_left, -- what to draw from down the line... - GeneratorQual - (TuplePatIn [VarPatIn con_field, VarPatIn str_left]) - (HsApp (HsApp (HsVar readsPrec_PN) (HsLit (HsInt 10))) draw_from)) + readParen_Expr read_paren_arg $ HsPar $ + HsLam (mk_easy_Match tycon_loc [c_Pat] [] $ + HsDo ListComp stmts tycon_loc) + ) (HsVar b_RDR) +\end{code} +%************************************************************************ +%* * +\subsubsection{Generating @Show@ instance declarations} +%* * +%************************************************************************ + +Ignoring all the infix-ery mumbo jumbo (ToDo) + +\begin{code} +gen_Show_binds :: TyCon -> RdrNameMonoBinds -gen_Show_binds fixities tycon +gen_Show_binds tycon = shows_prec `AndMonoBinds` show_list where + tycon_loc = getSrcLoc tycon ----------------------------------------------------------------------- - show_list = mk_easy_FunMonoBind showList_PN [] [] - (HsApp (HsVar _showList_PN) (HsApp (HsVar showsPrec_PN) (HsLit (HsInt 0)))) + show_list = mk_easy_FunMonoBind tycon_loc showList_RDR [] [] + (HsApp (HsVar showList___RDR) (HsPar (HsApp (HsVar showsPrec_RDR) (HsLit (HsInt 0))))) ----------------------------------------------------------------------- shows_prec - = mk_FunMonoBind showsPrec_PN (map pats_etc (tyConDataCons tycon)) + = mk_FunMonoBind tycon_loc showsPrec_RDR (map pats_etc (tyConDataCons tycon)) where pats_etc data_con = let - data_con_PN = Prel (WiredInId data_con) - bs_needed = take (dataConArity data_con) bs_PNs - con_pat = ConPatIn data_con_PN (map VarPatIn bs_needed) - nullary_con = dataConArity data_con == 0 + data_con_RDR = qual_orig_name data_con + con_arity = dataConNumFields data_con + bs_needed = take con_arity bs_RDRs + con_pat = ConPatIn data_con_RDR (map VarPatIn bs_needed) + nullary_con = isNullaryDataCon data_con show_con - = let (mod, nm) = moduleNamePair data_con + = let nm = occNameString (getOccName data_con) space_maybe = if nullary_con then _NIL_ else SLIT(" ") in - HsApp (HsVar showString_PN) (HsLit (HsString (nm _APPEND_ space_maybe))) + HsApp (HsVar showString_RDR) (HsLit (HsString (nm _APPEND_ space_maybe))) show_thingies = show_con : (spacified real_show_thingies) real_show_thingies - = [ HsApp (HsApp (HsVar showsPrec_PN) (HsLit (HsInt 10))) (HsVar b) + = [ HsApp (HsApp (HsVar showsPrec_RDR) (HsLit (HsInt 10))) (HsVar b) | b <- bs_needed ] in if nullary_con then -- skip the showParen junk... @@ -723,32 +767,17 @@ gen_Show_binds fixities tycon ([a_Pat, con_pat], show_con) else ([a_Pat, con_pat], - showParen_Expr (OpApp a_Expr (HsVar ge_PN) (HsLit (HsInt 10))) - (nested_compose_Expr show_thingies)) + showParen_Expr (HsPar (genOpApp a_Expr ge_RDR (HsLit (HsInt 10)))) + (HsPar (nested_compose_Expr show_thingies))) where spacified [] = [] spacified [x] = [x] - spacified (x:xs) = (x : (HsVar showSpace_PN) : spacified xs) -\end{code} - -%************************************************************************ -%* * -\subsubsection[TcGenDeriv-Binary]{Generating @Binary@ instance declarations} -%* * -%************************************************************************ - -ToDo: NOT DONE YET. - -\begin{code} -gen_Binary_binds :: TyCon -> RdrNameMonoBinds - -gen_Binary_binds tycon - = panic "gen_Binary_binds" + spacified (x:xs) = (x : (HsVar showSpace_RDR) : spacified xs) \end{code} %************************************************************************ %* * -\subsection[TcGenDeriv-con2tag-tag2con]{Generating extra binds (@con2tag@ and @tag2con@)} +\subsection{Generating extra binds (@con2tag@ and @tag2con@)} %* * %************************************************************************ @@ -768,13 +797,13 @@ data TagThingWanted = GenCon2Tag | GenTag2Con | GenMaxTag gen_tag_n_con_monobind - :: (RdrName, RnName, -- (proto)Name for the thing in question + :: (RdrName, -- (proto)Name for the thing in question TyCon, -- tycon in question TagThingWanted) -> RdrNameMonoBinds -gen_tag_n_con_monobind (pn, _, tycon, GenCon2Tag) - = mk_FunMonoBind pn (map mk_stuff (tyConDataCons tycon)) +gen_tag_n_con_monobind (rdr_name, tycon, GenCon2Tag) + = mk_FunMonoBind (getSrcLoc tycon) rdr_name (map mk_stuff (tyConDataCons tycon)) where mk_stuff :: DataCon -> ([RdrNamePat], RdrNameHsExpr) @@ -782,31 +811,34 @@ gen_tag_n_con_monobind (pn, _, tycon, GenCon2Tag) = ASSERT(isDataCon var) ([pat], HsLit (HsIntPrim (toInteger ((dataConTag var) - fIRST_TAG)))) where - pat = ConPatIn var_PN (nOfThem (dataConArity var) WildPatIn) - var_PN = Prel (WiredInId var) + pat = ConPatIn var_RDR (nOfThem (dataConNumFields var) WildPatIn) + var_RDR = qual_orig_name var -gen_tag_n_con_monobind (pn, _, tycon, GenTag2Con) - = mk_FunMonoBind pn (map mk_stuff (tyConDataCons tycon)) +gen_tag_n_con_monobind (rdr_name, tycon, GenTag2Con) + = mk_FunMonoBind (getSrcLoc tycon) rdr_name (map mk_stuff (tyConDataCons tycon) ++ + [([WildPatIn], impossible_Expr)]) where mk_stuff :: DataCon -> ([RdrNamePat], RdrNameHsExpr) mk_stuff var = ASSERT(isDataCon var) - ([lit_pat], HsVar var_PN) + ([lit_pat], HsVar var_RDR) where - lit_pat = ConPatIn mkInt_PN [LitPatIn (HsIntPrim (toInteger ((dataConTag var) - fIRST_TAG)))] - var_PN = Prel (WiredInId var) + lit_pat = ConPatIn mkInt_RDR [LitPatIn (HsIntPrim (toInteger ((dataConTag var) - fIRST_TAG)))] + var_RDR = qual_orig_name var -gen_tag_n_con_monobind (pn, _, tycon, GenMaxTag) - = mk_easy_FunMonoBind pn [] [] (HsApp (HsVar mkInt_PN) (HsLit (HsIntPrim max_tag))) +gen_tag_n_con_monobind (rdr_name, tycon, GenMaxTag) + = mk_easy_FunMonoBind (getSrcLoc tycon) + rdr_name [] [] (HsApp (HsVar mkInt_RDR) (HsLit (HsIntPrim max_tag))) where max_tag = case (tyConDataCons tycon) of data_cons -> toInteger ((length data_cons) - fIRST_TAG) + \end{code} %************************************************************************ %* * -\subsection[TcGenDeriv-bind-utils]{Utility bits for generating bindings} +\subsection{Utility bits for generating bindings} %* * %************************************************************************ @@ -825,17 +857,15 @@ multi-clause definitions; it generates: \end{verbatim} \begin{code} -mk_easy_FunMonoBind :: RdrName -> [RdrNamePat] +mk_easy_FunMonoBind :: SrcLoc -> RdrName -> [RdrNamePat] -> [RdrNameMonoBinds] -> RdrNameHsExpr -> RdrNameMonoBinds -mk_easy_FunMonoBind fun pats binds expr - = FunMonoBind fun False{-not infix-} [mk_easy_Match pats binds expr] mkGeneratedSrcLoc +mk_easy_FunMonoBind loc fun pats binds expr + = FunMonoBind fun False{-not infix-} [mk_easy_Match loc pats binds expr] loc -mk_easy_Match pats binds expr - = foldr PatMatch - (GRHSMatch (GRHSsAndBindsIn [OtherwiseGRHS expr mkGeneratedSrcLoc] (mkbind binds))) - pats +mk_easy_Match loc pats binds expr + = mk_match loc pats expr (mkbind binds) where mkbind [] = EmptyBinds mkbind bs = SingleBind (RecBind (foldr1 AndMonoBinds bs)) @@ -843,20 +873,31 @@ mk_easy_Match pats binds expr -- "recursive" MonoBinds, and it is its job to sort things out -- from there. -mk_FunMonoBind :: RdrName +mk_FunMonoBind :: SrcLoc -> RdrName -> [([RdrNamePat], RdrNameHsExpr)] -> RdrNameMonoBinds -mk_FunMonoBind fun [] = panic "TcGenDeriv:mk_FunMonoBind" -mk_FunMonoBind fun pats_and_exprs - = FunMonoBind fun False{-not infix-} (map mk_match pats_and_exprs) mkGeneratedSrcLoc +mk_FunMonoBind loc fun [] = panic "TcGenDeriv:mk_FunMonoBind" +mk_FunMonoBind loc fun pats_and_exprs + = FunMonoBind fun False{-not infix-} + [ mk_match loc p e EmptyBinds | (p,e) <-pats_and_exprs ] + loc + +mk_match loc pats expr binds + = foldr PatMatch + (GRHSMatch (GRHSsAndBindsIn [OtherwiseGRHS expr loc] binds)) + (map paren pats) where - mk_match (pats, expr) - = foldr PatMatch - (GRHSMatch (GRHSsAndBindsIn [OtherwiseGRHS expr mkGeneratedSrcLoc] EmptyBinds)) - pats + paren p@(VarPatIn _) = p + paren other_p = ParPatIn other_p +\end{code} + +\begin{code} +mk_easy_App f xs = foldl HsApp (HsVar f) (map HsVar xs) \end{code} +ToDo: Better SrcLocs. + \begin{code} compare_Case, cmp_eq_Expr :: RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr @@ -873,29 +914,29 @@ careful_compare_Case :: -- checks for primitive types... -> RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr -compare_Case = compare_gen_Case compare_PN -cmp_eq_Expr = compare_gen_Case cmp_eq_PN +compare_Case = compare_gen_Case compare_RDR +cmp_eq_Expr = compare_gen_Case cmp_eq_RDR compare_gen_Case fun lt eq gt a b - = HsCase (HsApp (HsApp (HsVar fun) a) b) {-of-} - [PatMatch (ConPatIn ltTag_PN []) + = HsCase (HsPar (HsApp (HsApp (HsVar fun) a) b)) {-of-} + [PatMatch (ConPatIn ltTag_RDR []) (GRHSMatch (GRHSsAndBindsIn [OtherwiseGRHS lt mkGeneratedSrcLoc] EmptyBinds)), - PatMatch (ConPatIn eqTag_PN []) + PatMatch (ConPatIn eqTag_RDR []) (GRHSMatch (GRHSsAndBindsIn [OtherwiseGRHS eq mkGeneratedSrcLoc] EmptyBinds)), - PatMatch (ConPatIn gtTag_PN []) + PatMatch (ConPatIn gtTag_RDR []) (GRHSMatch (GRHSsAndBindsIn [OtherwiseGRHS gt mkGeneratedSrcLoc] EmptyBinds))] mkGeneratedSrcLoc careful_compare_Case ty lt eq gt a b = if not (isPrimType ty) then - compare_gen_Case compare_PN lt eq gt a b + compare_gen_Case compare_RDR lt eq gt a b else -- we have to do something special for primitive things... - HsIf (OpApp a (HsVar relevant_eq_op) b) + HsIf (genOpApp a relevant_eq_op b) eq - (HsIf (OpApp a (HsVar relevant_lt_op) b) lt gt mkGeneratedSrcLoc) + (HsIf (genOpApp a relevant_lt_op b) lt gt mkGeneratedSrcLoc) mkGeneratedSrcLoc where relevant_eq_op = assoc_ty_id eq_op_tbl ty @@ -907,37 +948,39 @@ assoc_ty_id tyids ty where res = [id | (ty',id) <- tyids, eqTy ty ty'] -eq_op_tbl = [ - (charPrimTy, Prel (WiredInId (primOpId CharEqOp))), - (intPrimTy, Prel (WiredInId (primOpId IntEqOp))), - (wordPrimTy, Prel (WiredInId (primOpId WordEqOp))), - (addrPrimTy, Prel (WiredInId (primOpId AddrEqOp))), - (floatPrimTy, Prel (WiredInId (primOpId FloatEqOp))), - (doublePrimTy, Prel (WiredInId (primOpId DoubleEqOp))) ] - -lt_op_tbl = [ - (charPrimTy, Prel (WiredInId (primOpId CharLtOp))), - (intPrimTy, Prel (WiredInId (primOpId IntLtOp))), - (wordPrimTy, Prel (WiredInId (primOpId WordLtOp))), - (addrPrimTy, Prel (WiredInId (primOpId AddrLtOp))), - (floatPrimTy, Prel (WiredInId (primOpId FloatLtOp))), - (doublePrimTy, Prel (WiredInId (primOpId DoubleLtOp))) ] +eq_op_tbl = + [(charPrimTy, eqH_Char_RDR) + ,(intPrimTy, eqH_Int_RDR) + ,(wordPrimTy, eqH_Word_RDR) + ,(addrPrimTy, eqH_Addr_RDR) + ,(floatPrimTy, eqH_Float_RDR) + ,(doublePrimTy, eqH_Double_RDR) + ] + +lt_op_tbl = + [(charPrimTy, ltH_Char_RDR) + ,(intPrimTy, ltH_Int_RDR) + ,(wordPrimTy, ltH_Word_RDR) + ,(addrPrimTy, ltH_Addr_RDR) + ,(floatPrimTy, ltH_Float_RDR) + ,(doublePrimTy, ltH_Double_RDR) + ] ----------------------------------------------------------------------- and_Expr, append_Expr :: RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr -and_Expr a b = OpApp a (HsVar and_PN) b -append_Expr a b = OpApp a (HsVar append_PN) b +and_Expr a b = genOpApp a and_RDR b +append_Expr a b = genOpApp a append_RDR b ----------------------------------------------------------------------- -eq_Expr :: Type -> RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr +eq_Expr :: Type -> RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr eq_Expr ty a b = if not (isPrimType ty) then - OpApp a (HsVar eq_PN) b + genOpApp a eq_RDR b else -- we have to do something special for primitive things... - OpApp a (HsVar relevant_eq_op) b + genOpApp a relevant_eq_op b where relevant_eq_op = assoc_ty_id eq_op_tbl ty \end{code} @@ -946,21 +989,21 @@ eq_Expr ty a b untag_Expr :: TyCon -> [(RdrName, RdrName)] -> RdrNameHsExpr -> RdrNameHsExpr untag_Expr tycon [] expr = expr untag_Expr tycon ((untag_this, put_tag_here) : more) expr - = HsCase (HsApp (con2tag_Expr tycon) (HsVar untag_this)) {-of-} + = HsCase (HsPar (HsApp (con2tag_Expr tycon) (HsVar untag_this))) {-of-} [PatMatch (VarPatIn put_tag_here) (GRHSMatch (GRHSsAndBindsIn grhs EmptyBinds))] mkGeneratedSrcLoc where grhs = [OtherwiseGRHS (untag_Expr tycon more expr) mkGeneratedSrcLoc] -cmp_tags_Expr :: RdrName -- Comparison op - -> RdrName -> RdrName -- Things to compare +cmp_tags_Expr :: RdrName -- Comparison op + -> RdrName -> RdrName -- Things to compare -> RdrNameHsExpr -- What to return if true - -> RdrNameHsExpr -- What to return if false + -> RdrNameHsExpr -- What to return if false -> RdrNameHsExpr cmp_tags_Expr op a b true_case false_case - = HsIf (OpApp (HsVar a) (HsVar op) (HsVar b)) true_case false_case mkGeneratedSrcLoc + = HsIf (genOpApp (HsVar a) op (HsVar b)) true_case false_case mkGeneratedSrcLoc enum_from_to_Expr :: RdrNameHsExpr -> RdrNameHsExpr @@ -969,148 +1012,75 @@ enum_from_then_to_Expr :: RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr -enum_from_to_Expr f t2 = HsApp (HsApp (HsVar enumFromTo_PN) f) t2 -enum_from_then_to_Expr f t t2 = HsApp (HsApp (HsApp (HsVar enumFromThenTo_PN) f) t) t2 +enum_from_to_Expr f t2 = HsApp (HsApp (HsVar enumFromTo_RDR) f) t2 +enum_from_then_to_Expr f t t2 = HsApp (HsApp (HsApp (HsVar enumFromThenTo_RDR) f) t) t2 showParen_Expr, readParen_Expr :: RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr -showParen_Expr e1 e2 = HsApp (HsApp (HsVar showParen_PN) e1) e2 -readParen_Expr e1 e2 = HsApp (HsApp (HsVar readParen_PN) e1) e2 +showParen_Expr e1 e2 = HsApp (HsApp (HsVar showParen_RDR) e1) e2 +readParen_Expr e1 e2 = HsApp (HsApp (HsVar readParen_RDR) e1) e2 nested_compose_Expr :: [RdrNameHsExpr] -> RdrNameHsExpr -nested_compose_Expr [e] = e +nested_compose_Expr [e] = parenify e nested_compose_Expr (e:es) - = HsApp (HsApp (HsVar compose_PN) e) (nested_compose_Expr es) -\end{code} - -\begin{code} -a_PN = Unk SLIT("a") -b_PN = Unk SLIT("b") -c_PN = Unk SLIT("c") -d_PN = Unk SLIT("d") -ah_PN = Unk SLIT("a#") -bh_PN = Unk SLIT("b#") -ch_PN = Unk SLIT("c#") -dh_PN = Unk SLIT("d#") -cmp_eq_PN = Unk SLIT("cmp_eq") -rangeSize_PN = Unk SLIT("rangeSize") - -as_PNs = [ Unk (_PK_ ("a"++show i)) | i <- [(1::Int) .. ] ] -bs_PNs = [ Unk (_PK_ ("b"++show i)) | i <- [(1::Int) .. ] ] -cs_PNs = [ Unk (_PK_ ("c"++show i)) | i <- [(1::Int) .. ] ] - -eq_PN = prelude_method SLIT("Eq") SLIT("==") -ne_PN = prelude_method SLIT("Eq") SLIT("/=") -le_PN = prelude_method SLIT("Ord") SLIT("<=") -lt_PN = prelude_method SLIT("Ord") SLIT("<") -ge_PN = prelude_method SLIT("Ord") SLIT(">=") -gt_PN = prelude_method SLIT("Ord") SLIT(">") -max_PN = prelude_method SLIT("Ord") SLIT("max") -min_PN = prelude_method SLIT("Ord") SLIT("min") -compare_PN = prelude_method SLIT("Ord") SLIT("compare") -ltTag_PN = Prel (WiredInId ltDataCon) -eqTag_PN = Prel (WiredInId eqDataCon) -gtTag_PN = Prel (WiredInId gtDataCon) -enumFrom_PN = prelude_method SLIT("Enum") SLIT("enumFrom") -enumFromTo_PN = prelude_method SLIT("Enum") SLIT("enumFromTo") -enumFromThen_PN = prelude_method SLIT("Enum") SLIT("enumFromThen") -enumFromThenTo_PN= prelude_method SLIT("Enum") SLIT("enumFromThenTo") -range_PN = prelude_method SLIT("Ix") SLIT("range") -index_PN = prelude_method SLIT("Ix") SLIT("index") -inRange_PN = prelude_method SLIT("Ix") SLIT("inRange") -readsPrec_PN = prelude_method SLIT("Read") SLIT("readsPrec") -readList_PN = prelude_method SLIT("Read") SLIT("readList") -showsPrec_PN = prelude_method SLIT("Show") SLIT("showsPrec") -showList_PN = prelude_method SLIT("Show") SLIT("showList") -plus_PN = prelude_method SLIT("Num") SLIT("+") -times_PN = prelude_method SLIT("Num") SLIT("*") - -false_PN = Prel (WiredInId falseDataCon) -true_PN = Prel (WiredInId trueDataCon) -eqH_PN = Prel (WiredInId (primOpId IntEqOp)) -geH_PN = Prel (WiredInId (primOpId IntGeOp)) -leH_PN = Prel (WiredInId (primOpId IntLeOp)) -ltH_PN = Prel (WiredInId (primOpId IntLtOp)) -minusH_PN = Prel (WiredInId (primOpId IntSubOp)) -and_PN = prelude_val pRELUDE SLIT("&&") -not_PN = prelude_val pRELUDE SLIT("not") -append_PN = prelude_val pRELUDE_LIST SLIT("++") -map_PN = prelude_val pRELUDE_LIST SLIT("map") -compose_PN = prelude_val pRELUDE SLIT(".") -mkInt_PN = Prel (WiredInId intDataCon) -error_PN = Prel (WiredInId eRROR_ID) -showSpace_PN = prelude_val pRELUDE_TEXT SLIT("showSpace__") -- not quite std -showString_PN = prelude_val pRELUDE_TEXT SLIT("showString") -showParen_PN = prelude_val pRELUDE_TEXT SLIT("showParen") -readParen_PN = prelude_val pRELUDE_TEXT SLIT("readParen") -lex_PN = prelude_val pRELUDE_TEXT SLIT("lex") -_showList_PN = prelude_val pRELUDE_CORE SLIT("_showList") -_readList_PN = prelude_val pRELUDE_CORE SLIT("_readList") - -prelude_val m s = Imp m s [m] s -prelude_method c o = Imp pRELUDE_CORE o [pRELUDE_CORE] o -- class not used... - -a_Expr = HsVar a_PN -b_Expr = HsVar b_PN -c_Expr = HsVar c_PN -d_Expr = HsVar d_PN -ltTag_Expr = HsVar ltTag_PN -eqTag_Expr = HsVar eqTag_PN -gtTag_Expr = HsVar gtTag_PN -false_Expr = HsVar false_PN -true_Expr = HsVar true_PN - -con2tag_Expr tycon = HsVar (con2tag_PN tycon) - -a_Pat = VarPatIn a_PN -b_Pat = VarPatIn b_PN -c_Pat = VarPatIn c_PN -d_Pat = VarPatIn d_PN - - -con2tag_PN, tag2con_PN, maxtag_PN :: TyCon -> RdrName - -con2tag_PN tycon - = let (mod, nm) = moduleNamePair tycon - con2tag = SLIT("con2tag_") _APPEND_ nm _APPEND_ SLIT("#") - in - Imp mod con2tag [mod] con2tag + = HsApp (HsApp (HsVar compose_RDR) (parenify e)) (nested_compose_Expr es) -tag2con_PN tycon - = let (mod, nm) = moduleNamePair tycon - tag2con = SLIT("tag2con_") _APPEND_ nm _APPEND_ SLIT("#") - in - Imp mod tag2con [mod] tag2con - -maxtag_PN tycon - = let (mod, nm) = moduleNamePair tycon - maxtag = SLIT("maxtag_") _APPEND_ nm _APPEND_ SLIT("#") - in - Imp mod maxtag [mod] maxtag - - -con2tag_FN, tag2con_FN, maxtag_FN :: TyCon -> RnName +-- impossible_Expr is used in case RHSs that should never happen. +-- We generate these to keep the desugarer from complaining that they *might* happen! +impossible_Expr = HsApp (HsVar error_RDR) (HsLit (HsString (_PK_ "Urk! in TcGenDeriv"))) -tag2con_FN tycon - = let (mod, nm) = moduleNamePair tycon - tag2con = SLIT("tag2con_") _APPEND_ nm _APPEND_ SLIT("#") - in - mkFullName mod tag2con InventedInThisModule NotExported mkGeneratedSrcLoc +parenify e@(HsVar _) = e +parenify e = HsPar e -maxtag_FN tycon - = let (mod, nm) = moduleNamePair tycon - maxtag = SLIT("maxtag_") _APPEND_ nm _APPEND_ SLIT("#") - in - mkFullName mod maxtag InventedInThisModule NotExported mkGeneratedSrcLoc +-- genOpApp wraps brackets round the operator application, so that the +-- renamer won't subsequently try to re-associate it. +-- For some reason the renamer doesn't reassociate it right, and I can't +-- be bothered to find out why just now. -con2tag_FN tycon - = let (mod, nm) = moduleNamePair tycon - con2tag = SLIT("con2tag_") _APPEND_ nm _APPEND_ SLIT("#") - in - mkFullName mod con2tag InventedInThisModule NotExported mkGeneratedSrcLoc --} +genOpApp e1 op e2 = mkOpApp e1 op e2 \end{code} +\begin{code} +qual_orig_name n = case modAndOcc n of { (m,n) -> Qual m n } + +a_RDR = varUnqual SLIT("a") +b_RDR = varUnqual SLIT("b") +c_RDR = varUnqual SLIT("c") +d_RDR = varUnqual SLIT("d") +ah_RDR = varUnqual SLIT("a#") +bh_RDR = varUnqual SLIT("b#") +ch_RDR = varUnqual SLIT("c#") +dh_RDR = varUnqual SLIT("d#") +cmp_eq_RDR = varUnqual SLIT("cmp_eq") +rangeSize_RDR = varUnqual SLIT("rangeSize") + +as_RDRs = [ varUnqual (_PK_ ("a"++show i)) | i <- [(1::Int) .. ] ] +bs_RDRs = [ varUnqual (_PK_ ("b"++show i)) | i <- [(1::Int) .. ] ] +cs_RDRs = [ varUnqual (_PK_ ("c"++show i)) | i <- [(1::Int) .. ] ] + +a_Expr = HsVar a_RDR +b_Expr = HsVar b_RDR +c_Expr = HsVar c_RDR +d_Expr = HsVar d_RDR +ltTag_Expr = HsVar ltTag_RDR +eqTag_Expr = HsVar eqTag_RDR +gtTag_Expr = HsVar gtTag_RDR +false_Expr = HsVar false_RDR +true_Expr = HsVar true_RDR + +con2tag_Expr tycon = HsVar (con2tag_RDR tycon) + +a_Pat = VarPatIn a_RDR +b_Pat = VarPatIn b_RDR +c_Pat = VarPatIn c_RDR +d_Pat = VarPatIn d_RDR + +con2tag_RDR, tag2con_RDR, maxtag_RDR :: TyCon -> RdrName + +con2tag_RDR tycon = varUnqual (SLIT("con2tag_") _APPEND_ occNameString (getOccName tycon) _APPEND_ SLIT("#")) +tag2con_RDR tycon = varUnqual (SLIT("tag2con_") _APPEND_ occNameString (getOccName tycon) _APPEND_ SLIT("#")) +maxtag_RDR tycon = varUnqual (SLIT("maxtag_") _APPEND_ occNameString (getOccName tycon) _APPEND_ SLIT("#")) +\end{code}