#include "HsVersions.h"
-import HsSyn ( Pat(..), HsConDetails(..), HsExpr(..), MonoBinds(..),
- Match(..), GRHSs(..), Stmt(..), HsLit(..),
- HsBinds(..), HsType(..), HsStmtContext(..),
- unguardedRHS, mkSimpleMatch, mkMonoBind, andMonoBindList, placeHolderType
- )
-import RdrName ( RdrName, mkUnqual, nameRdrName, getRdrName )
-import RdrHsSyn ( mkHsOpApp, RdrNameMonoBinds, RdrNameHsExpr, RdrNamePat, mkHsDo )
-import BasicTypes ( RecFlag(..), Fixity(..), FixityDirection(..)
- , maxPrecedence
- , Boxity(..)
- )
-import FieldLabel ( fieldLabelName )
-import DataCon ( isNullaryDataCon, dataConTag,
+import HsSyn
+import RdrName ( RdrName, mkVarUnqual, getRdrName, mkRdrUnqual,
+ mkDerivedRdrName )
+import BasicTypes ( Fixity(..), maxPrecedence, Boxity(..) )
+import DataCon ( isNullarySrcDataCon, dataConTag,
dataConOrigArgTys, dataConSourceArity, fIRST_TAG,
- DataCon,
+ DataCon, dataConName, dataConIsInfix,
dataConFieldLabels )
-import Name ( getOccString, getOccName, getSrcLoc, occNameString,
- occNameUserString, varName,
- Name, NamedThing(..),
- isDataSymOcc, isSymOcc
- )
+import Name ( getOccString, getSrcLoc, Name, NamedThing(..) )
import HscTypes ( FixityEnv, lookupFixity )
-import PrelNames -- Lots of Names
-import PrimOp -- Lots of Names
-import SrcLoc ( generatedSrcLoc, SrcLoc )
-import TyCon ( TyCon, isNewTyCon, tyConDataCons, isEnumerationTyCon,
- maybeTyConSingleCon, tyConFamilySize, tyConTyVars
+import PrelInfo
+import PrelNames
+import MkId ( eRROR_ID )
+import PrimOp ( PrimOp(..) )
+import SrcLoc ( Located(..), noLoc, srcLocSpan )
+import TyCon ( TyCon, isNewTyCon, tyConDataCons, isEnumerationTyCon, tyConArity,
+ maybeTyConSingleCon, tyConFamilySize, tyConTyVars, tyConName
)
import TcType ( isUnLiftedType, tcEqType, Type )
-import TysPrim ( charPrimTy, intPrimTy, wordPrimTy, addrPrimTy,
- floatPrimTy, doublePrimTy
- )
+import TysPrim ( charPrimTy, intPrimTy, wordPrimTy, addrPrimTy, floatPrimTy, doublePrimTy,
+ intPrimTyCon )
+import TysWiredIn ( charDataCon, intDataCon, floatDataCon, doubleDataCon,
+ intDataCon_RDR, true_RDR, false_RDR )
import Util ( zipWithEqual, isSingleton,
zipWith3Equal, nOfThem, zipEqual )
-import Panic ( panic, assertPanic )
-import Char ( ord, isAlpha )
import Constants
import List ( partition, intersperse )
import Outputable
import FastString
import OccName
+import Bag
\end{code}
%************************************************************************
\end{itemize}
-deriveEq :: RdrName -- Class
- -> RdrName -- Type constructor
- -> [ (RdrName, [RdrType]) ] -- Constructors
- -> (RdrContext, -- Context for the inst decl
- [RdrBind], -- Binds in the inst decl
- [RdrBind]) -- Extra value bindings outside
-
-deriveEq clas tycon constrs
- = (context, [eq_bind, ne_bind], [])
- where
- context = [(clas, [ty]) | (_, tys) <- constrs, ty <- tys]
-
- ne_bind = mkBind
- (nullary_cons, non_nullary_cons) = partition is_nullary constrs
- is_nullary (_, args) = null args
-
\begin{code}
-gen_Eq_binds :: TyCon -> RdrNameMonoBinds
+gen_Eq_binds :: TyCon -> LHsBinds RdrName
gen_Eq_binds tycon
= let
- tycon_loc = getSrcLoc tycon
+ tycon_loc = getSrcSpan tycon
+
(nullary_cons, nonnullary_cons)
| isNewTyCon tycon = ([], tyConDataCons tycon)
- | otherwise = partition isNullaryDataCon (tyConDataCons tycon)
+ | otherwise = partition isNullarySrcDataCon (tyConDataCons tycon)
rest
= if (null nullary_cons) then
case maybeTyConSingleCon tycon of
Just _ -> []
Nothing -> -- if cons don't match, then False
- [([wildPat, wildPat], false_Expr)]
+ [([nlWildPat, nlWildPat], false_Expr)]
else -- calc. and compare the tags
[([a_Pat, b_Pat],
untag_Expr tycon [(a_RDR,ah_RDR), (b_RDR,bh_RDR)]
- (genOpApp (HsVar ah_RDR) eqInt_RDR (HsVar bh_RDR)))]
+ (genOpApp (nlHsVar ah_RDR) eqInt_RDR (nlHsVar bh_RDR)))]
in
- 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 (mkHsVarApps eq_RDR [a_RDR, b_RDR])))
+ listToBag [
+ mk_FunBind tycon_loc eq_RDR ((map pats_etc nonnullary_cons) ++ rest),
+ mk_easy_FunBind tycon_loc ne_RDR [a_Pat, b_Pat] (
+ nlHsApp (nlHsVar not_RDR) (nlHsPar (nlHsVarApps eq_RDR [a_RDR, b_RDR])))
+ ]
where
------------------------------------------------------------------
pats_etc data_con
= let
- con1_pat = mkConPat data_con_RDR as_needed
- con2_pat = mkConPat data_con_RDR bs_needed
+ con1_pat = nlConVarPat data_con_RDR as_needed
+ con2_pat = nlConVarPat data_con_RDR bs_needed
data_con_RDR = getRdrName data_con
con_arity = length tys_needed
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))
+ nested_eq ty a b = nlHsPar (eq_Expr tycon ty (nlHsVar a) (nlHsVar b))
\end{code}
%************************************************************************
JJQC-30-Nov-1997
\begin{code}
-gen_Ord_binds :: TyCon -> RdrNameMonoBinds
+gen_Ord_binds :: TyCon -> LHsBinds RdrName
gen_Ord_binds tycon
- = compare -- `AndMonoBinds` compare
+ = unitBag compare -- `AndMonoBinds` compare
-- The default declaration in PrelBase handles this
where
- tycon_loc = getSrcLoc tycon
+ tycon_loc = getSrcSpan tycon
--------------------------------------------------------------------
- compare = mk_easy_FunMonoBind tycon_loc compare_RDR
- [a_Pat, b_Pat] [cmp_eq] compare_rhs
+
+ compare = L tycon_loc (mkFunBind (L tycon_loc compare_RDR) compare_matches)
+ compare_matches = [mkMatch [a_Pat, b_Pat] compare_rhs cmp_eq_binds]
+ cmp_eq_binds = HsValBinds (ValBindsIn (unitBag cmp_eq) [])
+
compare_rhs
| single_con_type = cmp_eq_Expr a_Expr b_Expr
| otherwise
single_con_type = isSingleton tycon_data_cons
(nullary_cons, nonnullary_cons)
| isNewTyCon tycon = ([], tyConDataCons tycon)
- | otherwise = partition isNullaryDataCon tycon_data_cons
+ | otherwise = partition isNullarySrcDataCon tycon_data_cons
- cmp_eq = mk_FunMonoBind tycon_loc cmp_eq_RDR cmp_eq_match
+ cmp_eq = mk_FunBind tycon_loc cmp_eq_RDR cmp_eq_match
cmp_eq_match
| isEnumerationTyCon tycon
-- We know the tags are equal, so if it's an enumeration TyCon,
-- Catch this specially to avoid warnings
-- about overlapping patterns from the desugarer,
-- and to avoid unnecessary pattern-matching
- = [([wildPat,wildPat], eqTag_Expr)]
+ = [([nlWildPat,nlWildPat], eqTag_Expr)]
| otherwise
= map pats_etc nonnullary_cons ++
(if single_con_type then -- Omit wildcards when there's just one
[] -- constructor, to silence desugarer
else
- [([wildPat, wildPat], default_rhs)])
+ [([nlWildPat, nlWildPat], default_rhs)])
where
pats_etc data_con
= ([con1_pat, con2_pat],
nested_compare_expr tys_needed as_needed bs_needed)
where
- con1_pat = mkConPat data_con_RDR as_needed
- con2_pat = mkConPat data_con_RDR bs_needed
+ con1_pat = nlConVarPat data_con_RDR as_needed
+ con2_pat = nlConVarPat data_con_RDR bs_needed
data_con_RDR = getRdrName data_con
con_arity = length tys_needed
tys_needed = dataConOrigArgTys data_con
nested_compare_expr [ty] [a] [b]
- = careful_compare_Case ty eqTag_Expr (HsVar a) (HsVar b)
+ = careful_compare_Case tycon ty eqTag_Expr (nlHsVar a) (nlHsVar b)
nested_compare_expr (ty:tys) (a:as) (b:bs)
= let eq_expr = nested_compare_expr tys as bs
- in careful_compare_Case ty eq_expr (HsVar a) (HsVar b)
+ in careful_compare_Case tycon ty eq_expr (nlHsVar a) (nlHsVar b)
default_rhs | null nullary_cons = impossible_Expr -- Keep desugarer from complaining about
-- inexhaustive patterns
For @enumFromTo@ and @enumFromThenTo@, we use the default methods.
\begin{code}
-gen_Enum_binds :: TyCon -> RdrNameMonoBinds
+gen_Enum_binds :: TyCon -> LHsBinds RdrName
gen_Enum_binds tycon
- = succ_enum `AndMonoBinds`
- pred_enum `AndMonoBinds`
- to_enum `AndMonoBinds`
- enum_from `AndMonoBinds`
- enum_from_then `AndMonoBinds`
- from_enum
+ = listToBag [
+ succ_enum,
+ pred_enum,
+ to_enum,
+ enum_from,
+ enum_from_then,
+ from_enum
+ ]
where
- tycon_loc = getSrcLoc tycon
+ tycon_loc = getSrcSpan tycon
occ_nm = getOccString tycon
succ_enum
- = mk_easy_FunMonoBind tycon_loc succ_RDR [a_Pat] [] $
+ = mk_easy_FunBind tycon_loc succ_RDR [a_Pat] $
untag_Expr tycon [(a_RDR, ah_RDR)] $
- HsIf (mkHsApps eq_RDR [HsVar (maxtag_RDR tycon),
- mkHsVarApps mkInt_RDR [ah_RDR]])
+ nlHsIf (nlHsApps eq_RDR [nlHsVar (maxtag_RDR tycon),
+ nlHsVarApps intDataCon_RDR [ah_RDR]])
(illegal_Expr "succ" occ_nm "tried to take `succ' of last tag in enumeration")
- (HsApp (HsVar (tag2con_RDR tycon))
- (mkHsApps plus_RDR [mkHsVarApps mkInt_RDR [ah_RDR],
- mkHsIntLit 1]))
- tycon_loc
+ (nlHsApp (nlHsVar (tag2con_RDR tycon))
+ (nlHsApps plus_RDR [nlHsVarApps intDataCon_RDR [ah_RDR],
+ nlHsIntLit 1]))
pred_enum
- = mk_easy_FunMonoBind tycon_loc pred_RDR [a_Pat] [] $
+ = mk_easy_FunBind tycon_loc pred_RDR [a_Pat] $
untag_Expr tycon [(a_RDR, ah_RDR)] $
- HsIf (mkHsApps eq_RDR [mkHsIntLit 0,
- mkHsVarApps mkInt_RDR [ah_RDR]])
+ nlHsIf (nlHsApps eq_RDR [nlHsIntLit 0,
+ nlHsVarApps intDataCon_RDR [ah_RDR]])
(illegal_Expr "pred" occ_nm "tried to take `pred' of first tag in enumeration")
- (HsApp (HsVar (tag2con_RDR tycon))
- (mkHsApps plus_RDR [mkHsVarApps mkInt_RDR [ah_RDR],
- HsLit (HsInt (-1))]))
- tycon_loc
+ (nlHsApp (nlHsVar (tag2con_RDR tycon))
+ (nlHsApps plus_RDR [nlHsVarApps intDataCon_RDR [ah_RDR],
+ nlHsLit (HsInt (-1))]))
to_enum
- = mk_easy_FunMonoBind tycon_loc toEnum_RDR [a_Pat] [] $
- HsIf (mkHsApps and_RDR
- [mkHsApps ge_RDR [HsVar a_RDR, mkHsIntLit 0],
- mkHsApps le_RDR [HsVar a_RDR, HsVar (maxtag_RDR tycon)]])
- (mkHsVarApps (tag2con_RDR tycon) [a_RDR])
+ = mk_easy_FunBind tycon_loc toEnum_RDR [a_Pat] $
+ nlHsIf (nlHsApps and_RDR
+ [nlHsApps ge_RDR [nlHsVar a_RDR, nlHsIntLit 0],
+ nlHsApps le_RDR [nlHsVar a_RDR, nlHsVar (maxtag_RDR tycon)]])
+ (nlHsVarApps (tag2con_RDR tycon) [a_RDR])
(illegal_toEnum_tag occ_nm (maxtag_RDR tycon))
- tycon_loc
enum_from
- = mk_easy_FunMonoBind tycon_loc enumFrom_RDR [a_Pat] [] $
+ = mk_easy_FunBind tycon_loc enumFrom_RDR [a_Pat] $
untag_Expr tycon [(a_RDR, ah_RDR)] $
- mkHsApps map_RDR
- [HsVar (tag2con_RDR tycon),
- HsPar (enum_from_to_Expr
- (mkHsVarApps mkInt_RDR [ah_RDR])
- (HsVar (maxtag_RDR tycon)))]
+ nlHsApps map_RDR
+ [nlHsVar (tag2con_RDR tycon),
+ nlHsPar (enum_from_to_Expr
+ (nlHsVarApps intDataCon_RDR [ah_RDR])
+ (nlHsVar (maxtag_RDR tycon)))]
enum_from_then
- = mk_easy_FunMonoBind tycon_loc enumFromThen_RDR [a_Pat, b_Pat] [] $
+ = mk_easy_FunBind tycon_loc enumFromThen_RDR [a_Pat, b_Pat] $
untag_Expr tycon [(a_RDR, ah_RDR), (b_RDR, bh_RDR)] $
- HsApp (mkHsVarApps map_RDR [tag2con_RDR tycon]) $
- HsPar (enum_from_then_to_Expr
- (mkHsVarApps mkInt_RDR [ah_RDR])
- (mkHsVarApps mkInt_RDR [bh_RDR])
- (HsIf (mkHsApps gt_RDR [mkHsVarApps mkInt_RDR [ah_RDR],
- mkHsVarApps mkInt_RDR [bh_RDR]])
- (mkHsIntLit 0)
- (HsVar (maxtag_RDR tycon))
- tycon_loc))
+ nlHsApp (nlHsVarApps map_RDR [tag2con_RDR tycon]) $
+ nlHsPar (enum_from_then_to_Expr
+ (nlHsVarApps intDataCon_RDR [ah_RDR])
+ (nlHsVarApps intDataCon_RDR [bh_RDR])
+ (nlHsIf (nlHsApps gt_RDR [nlHsVarApps intDataCon_RDR [ah_RDR],
+ nlHsVarApps intDataCon_RDR [bh_RDR]])
+ (nlHsIntLit 0)
+ (nlHsVar (maxtag_RDR tycon))
+ ))
from_enum
- = mk_easy_FunMonoBind tycon_loc fromEnum_RDR [a_Pat] [] $
+ = mk_easy_FunBind tycon_loc fromEnum_RDR [a_Pat] $
untag_Expr tycon [(a_RDR, ah_RDR)] $
- (mkHsVarApps mkInt_RDR [ah_RDR])
+ (nlHsVarApps intDataCon_RDR [ah_RDR])
\end{code}
%************************************************************************
\begin{code}
gen_Bounded_binds tycon
= if isEnumerationTyCon tycon then
- min_bound_enum `AndMonoBinds` max_bound_enum
+ listToBag [ min_bound_enum, max_bound_enum ]
else
ASSERT(isSingleton data_cons)
- min_bound_1con `AndMonoBinds` max_bound_1con
+ listToBag [ min_bound_1con, max_bound_1con ]
where
data_cons = tyConDataCons tycon
- tycon_loc = getSrcLoc tycon
+ tycon_loc = getSrcSpan tycon
----- enum-flavored: ---------------------------
- min_bound_enum = mkVarMonoBind tycon_loc minBound_RDR (HsVar data_con_1_RDR)
- max_bound_enum = mkVarMonoBind tycon_loc maxBound_RDR (HsVar data_con_N_RDR)
+ min_bound_enum = mkVarBind tycon_loc minBound_RDR (nlHsVar data_con_1_RDR)
+ max_bound_enum = mkVarBind tycon_loc maxBound_RDR (nlHsVar data_con_N_RDR)
data_con_1 = head data_cons
data_con_N = last data_cons
----- single-constructor-flavored: -------------
arity = dataConSourceArity data_con_1
- min_bound_1con = mkVarMonoBind tycon_loc minBound_RDR $
- mkHsVarApps data_con_1_RDR (nOfThem arity minBound_RDR)
- max_bound_1con = mkVarMonoBind tycon_loc maxBound_RDR $
- mkHsVarApps data_con_1_RDR (nOfThem arity maxBound_RDR)
+ min_bound_1con = mkVarBind tycon_loc minBound_RDR $
+ nlHsVarApps data_con_1_RDR (nOfThem arity minBound_RDR)
+ max_bound_1con = mkVarBind tycon_loc maxBound_RDR $
+ nlHsVarApps data_con_1_RDR (nOfThem arity maxBound_RDR)
\end{code}
%************************************************************************
map tag2con_Foo (enumFromTo (I# a#) (I# b#))
}}
- index c@(a, b) d
- = if inRange c d
- then case (con2tag_Foo d -# con2tag_Foo a) of
+ -- Generate code for unsafeIndex, becuase using index leads
+ -- to lots of redundant range tests
+ unsafeIndex c@(a, b) d
+ = case (con2tag_Foo d -# con2tag_Foo a) of
r# -> I# r#
- else error "Ix.Foo.index: out of range"
inRange (a, b) c
= let
(p.~147).
\begin{code}
-gen_Ix_binds :: TyCon -> RdrNameMonoBinds
+gen_Ix_binds :: TyCon -> LHsBinds RdrName
gen_Ix_binds tycon
= if isEnumerationTyCon tycon
then enum_ixes
else single_con_ixes
where
- tycon_str = getOccString tycon
- tycon_loc = getSrcLoc tycon
+ tycon_loc = getSrcSpan tycon
--------------------------------------------------------------
- enum_ixes = enum_range `AndMonoBinds`
- enum_index `AndMonoBinds` enum_inRange
+ enum_ixes = listToBag [ enum_range, enum_index, enum_inRange ]
enum_range
- = mk_easy_FunMonoBind tycon_loc range_RDR
- [TuplePat [a_Pat, b_Pat] Boxed] [] $
+ = mk_easy_FunBind tycon_loc range_RDR [nlTuplePat [a_Pat, b_Pat] Boxed] $
untag_Expr tycon [(a_RDR, ah_RDR)] $
untag_Expr tycon [(b_RDR, bh_RDR)] $
- HsApp (mkHsVarApps map_RDR [tag2con_RDR tycon]) $
- HsPar (enum_from_to_Expr
- (mkHsVarApps mkInt_RDR [ah_RDR])
- (mkHsVarApps mkInt_RDR [bh_RDR]))
+ nlHsApp (nlHsVarApps map_RDR [tag2con_RDR tycon]) $
+ nlHsPar (enum_from_to_Expr
+ (nlHsVarApps intDataCon_RDR [ah_RDR])
+ (nlHsVarApps intDataCon_RDR [bh_RDR]))
enum_index
- = mk_easy_FunMonoBind tycon_loc index_RDR
- [AsPat c_RDR (TuplePat [a_Pat, wildPat] Boxed),
- d_Pat] [] (
- HsIf (HsPar (mkHsVarApps inRange_RDR [c_RDR, d_RDR])) (
+ = mk_easy_FunBind tycon_loc unsafeIndex_RDR
+ [noLoc (AsPat (noLoc c_RDR)
+ (nlTuplePat [a_Pat, nlWildPat] Boxed)),
+ d_Pat] (
untag_Expr tycon [(a_RDR, ah_RDR)] (
untag_Expr tycon [(d_RDR, dh_RDR)] (
let
- rhs = mkHsVarApps mkInt_RDR [c_RDR]
+ rhs = nlHsVarApps intDataCon_RDR [c_RDR]
in
- HsCase
- (genOpApp (HsVar dh_RDR) minusInt_RDR (HsVar ah_RDR))
- [mkSimpleMatch [VarPat c_RDR] rhs placeHolderType tycon_loc]
- tycon_loc
+ nlHsCase
+ (genOpApp (nlHsVar dh_RDR) minusInt_RDR (nlHsVar ah_RDR))
+ [mkSimpleHsAlt (nlVarPat c_RDR) rhs]
))
- ) {-else-} (
- HsApp (HsVar error_RDR) (HsLit (HsString (mkFastString ("Ix."++tycon_str++".index: out of range\n"))))
)
- tycon_loc)
enum_inRange
- = mk_easy_FunMonoBind tycon_loc inRange_RDR
- [TuplePat [a_Pat, b_Pat] Boxed, c_Pat] [] (
+ = mk_easy_FunBind tycon_loc inRange_RDR [nlTuplePat [a_Pat, b_Pat] Boxed, 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) geInt_RDR (HsVar ah_RDR)) (
- (genOpApp (HsVar ch_RDR) leInt_RDR (HsVar bh_RDR))
+ nlHsIf (genOpApp (nlHsVar ch_RDR) geInt_RDR (nlHsVar ah_RDR)) (
+ (genOpApp (nlHsVar ch_RDR) leInt_RDR (nlHsVar bh_RDR))
) {-else-} (
false_Expr
- ) tycon_loc))))
+ ))))
--------------------------------------------------------------
single_con_ixes
- = single_con_range `AndMonoBinds`
- single_con_index `AndMonoBinds`
- single_con_inRange
+ = listToBag [single_con_range, single_con_index, single_con_inRange]
data_con
= case maybeTyConSingleCon tycon of -- just checking...
Nothing -> panic "get_Ix_binds"
- Just dc -> if (any isUnLiftedType (dataConOrigArgTys dc)) then
- error ("ERROR: Can't derive Ix for a single-constructor type with primitive argument types: "++tycon_str)
- else
- dc
+ Just dc | any isUnLiftedType (dataConOrigArgTys dc)
+ -> pprPanic "Can't derive Ix for a single-constructor type with primitive argument types:" (ppr tycon)
+ | otherwise -> dc
con_arity = dataConSourceArity data_con
data_con_RDR = getRdrName data_con
bs_needed = take con_arity bs_RDRs
cs_needed = take con_arity cs_RDRs
- con_pat xs = mkConPat data_con_RDR xs
- con_expr = mkHsVarApps data_con_RDR cs_needed
+ con_pat xs = nlConVarPat data_con_RDR xs
+ con_expr = nlHsVarApps data_con_RDR cs_needed
--------------------------------------------------------------
single_con_range
- = mk_easy_FunMonoBind tycon_loc range_RDR
- [TuplePat [con_pat as_needed, con_pat bs_needed] Boxed] [] $
- mkHsDo ListComp stmts tycon_loc
+ = mk_easy_FunBind tycon_loc range_RDR
+ [nlTuplePat [con_pat as_needed, con_pat bs_needed] Boxed] $
+ nlHsDo ListComp stmts con_expr
where
stmts = zipWith3Equal "single_con_range" mk_qual as_needed bs_needed cs_needed
- ++
- [ResultStmt con_expr tycon_loc]
- mk_qual a b c = BindStmt (VarPat c)
- (HsApp (HsVar range_RDR)
- (ExplicitTuple [HsVar a, HsVar b] Boxed))
- tycon_loc
+ mk_qual a b c = noLoc $ mkBindStmt (nlVarPat c)
+ (nlHsApp (nlHsVar range_RDR)
+ (nlTuple [nlHsVar a, nlHsVar b] Boxed))
----------------
single_con_index
- = mk_easy_FunMonoBind tycon_loc index_RDR
- [TuplePat [con_pat as_needed, con_pat bs_needed] Boxed,
- con_pat cs_needed] [range_size] (
- foldl mk_index (mkHsIntLit 0) (zip3 as_needed bs_needed cs_needed))
+ = mk_easy_FunBind tycon_loc unsafeIndex_RDR
+ [nlTuplePat [con_pat as_needed, con_pat bs_needed] Boxed,
+ con_pat cs_needed]
+ (mk_index (zip3 as_needed bs_needed cs_needed))
where
- mk_index multiply_by (l, u, i)
+ -- index (l1,u1) i1 + rangeSize (l1,u1) * (index (l2,u2) i2 + ...)
+ mk_index [] = nlHsIntLit 0
+ mk_index [(l,u,i)] = mk_one l u i
+ mk_index ((l,u,i) : rest)
= genOpApp (
- (mkHsApps index_RDR [ExplicitTuple [HsVar l, HsVar u] Boxed,
- HsVar i])
- ) plus_RDR (
+ mk_one l u i
+ ) plus_RDR (
genOpApp (
- (HsApp (HsVar rangeSize_RDR)
- (ExplicitTuple [HsVar l, HsVar u] Boxed))
- ) times_RDR multiply_by
+ (nlHsApp (nlHsVar unsafeRangeSize_RDR)
+ (nlTuple [nlHsVar l, nlHsVar u] Boxed))
+ ) times_RDR (mk_index rest)
)
-
- range_size
- = mk_easy_FunMonoBind tycon_loc rangeSize_RDR
- [TuplePat [a_Pat, b_Pat] Boxed] [] (
- genOpApp (
- (mkHsApps index_RDR [ExplicitTuple [a_Expr, b_Expr] Boxed,
- b_Expr])
- ) plus_RDR (mkHsIntLit 1))
+ mk_one l u i
+ = nlHsApps unsafeIndex_RDR [nlTuple [nlHsVar l, nlHsVar u] Boxed, nlHsVar i]
------------------
single_con_inRange
- = mk_easy_FunMonoBind tycon_loc inRange_RDR
- [TuplePat [con_pat as_needed, con_pat bs_needed] Boxed,
- con_pat cs_needed]
- [] (
- foldl1 and_Expr (zipWith3Equal "single_con_inRange" in_range as_needed bs_needed cs_needed))
+ = mk_easy_FunBind tycon_loc inRange_RDR
+ [nlTuplePat [con_pat as_needed, con_pat bs_needed] Boxed,
+ 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 = mkHsApps inRange_RDR [ExplicitTuple [HsVar a, HsVar b] Boxed,
- HsVar c]
+ in_range a b c = nlHsApps inRange_RDR [nlTuple [nlHsVar a, nlHsVar b] Boxed,
+ nlHsVar c]
\end{code}
%************************************************************************
\begin{code}
-gen_Read_binds :: FixityEnv -> TyCon -> RdrNameMonoBinds
+gen_Read_binds :: FixityEnv -> TyCon -> LHsBinds RdrName
gen_Read_binds get_fixity tycon
- = read_prec `AndMonoBinds` default_binds
+ = listToBag [read_prec, default_readlist, default_readlistprec]
where
-----------------------------------------------------------------------
- default_binds
- = mkVarMonoBind loc readList_RDR (HsVar readListDefault_RDR)
- `AndMonoBinds`
- mkVarMonoBind loc readListPrec_RDR (HsVar readListPrecDefault_RDR)
+ default_readlist
+ = mkVarBind loc readList_RDR (nlHsVar readListDefault_RDR)
+
+ default_readlistprec
+ = mkVarBind loc readListPrec_RDR (nlHsVar readListPrecDefault_RDR)
-----------------------------------------------------------------------
- loc = getSrcLoc tycon
+ loc = getSrcSpan tycon
data_cons = tyConDataCons tycon
- (nullary_cons, non_nullary_cons) = partition isNullaryDataCon data_cons
+ (nullary_cons, non_nullary_cons) = partition isNullarySrcDataCon data_cons
- read_prec = mkVarMonoBind loc readPrec_RDR
- (HsApp (HsVar parens_RDR) read_cons)
+ read_prec = mkVarBind loc readPrec_RDR
+ (nlHsApp (nlHsVar parens_RDR) read_cons)
read_cons = foldr1 mk_alt (read_nullary_cons ++ read_non_nullary_cons)
read_non_nullary_cons = map read_non_nullary_con non_nullary_cons
read_nullary_cons
= case nullary_cons of
[] -> []
- [con] -> [mkHsDo DoExpr [bindLex (ident_pat (data_con_str con)),
- result_stmt con []] loc]
- _ -> [HsApp (HsVar choose_RDR)
- (ExplicitList placeHolderType (map mk_pair nullary_cons))]
+ [con] -> [nlHsDo DoExpr [bindLex (ident_pat (data_con_str con))]
+ (result_expr con [])]
+ _ -> [nlHsApp (nlHsVar choose_RDR)
+ (nlList (map mk_pair nullary_cons))]
- mk_pair con = ExplicitTuple [HsLit (data_con_str con),
- HsApp (HsVar returnM_RDR) (HsVar (getRdrName con))]
- Boxed
+ mk_pair con = nlTuple [nlHsLit (mkHsString (data_con_str con)),
+ nlHsApp (nlHsVar returnM_RDR) (nlHsVar (getRdrName con))]
+ Boxed
read_non_nullary_con data_con
- = mkHsApps prec_RDR [mkHsIntLit prec, mkHsDo DoExpr stmts loc]
+ = nlHsApps prec_RDR [nlHsIntLit prec, nlHsDo DoExpr stmts body]
where
stmts | is_infix = infix_stmts
| length labels > 0 = lbl_stmts
| otherwise = prefix_stmts
+ body = result_expr data_con as_needed
+ con_str = data_con_str data_con
+
prefix_stmts -- T a b c
- = [bindLex (ident_pat (data_con_str data_con))]
- ++ map read_arg as_needed
- ++ [result_stmt data_con as_needed]
+ = [bindLex (ident_pat (wrapOpParens con_str))]
+ ++ read_args
- infix_stmts -- a %% b
- = [read_arg a1,
- bindLex (symbol_pat (data_con_str data_con)),
- read_arg a2,
- result_stmt data_con [a1,a2]]
+ infix_stmts -- a %% b, or a `T` b
+ = [read_a1]
+ ++ (if isSym con_str
+ then [bindLex (symbol_pat con_str)]
+ else [read_punc "`", bindLex (ident_pat con_str), read_punc "`"])
+ ++ [read_a2]
lbl_stmts -- T { f1 = a, f2 = b }
- = [bindLex (ident_pat (data_con_str data_con)),
+ = [bindLex (ident_pat (wrapOpParens con_str)),
read_punc "{"]
++ concat (intersperse [read_punc ","] field_stmts)
- ++ [read_punc "}", result_stmt data_con as_needed]
+ ++ [read_punc "}"]
field_stmts = zipWithEqual "lbl_stmts" read_field labels as_needed
con_arity = dataConSourceArity data_con
- nullary_con = con_arity == 0
labels = dataConFieldLabels data_con
- lab_fields = length labels
dc_nm = getName data_con
- is_infix = isDataSymOcc (getOccName dc_nm)
+ is_infix = dataConIsInfix data_con
as_needed = take con_arity as_RDRs
- (a1:a2:_) = as_needed
+ read_args = zipWithEqual "gen_Read_binds" read_arg as_needed (dataConOrigArgTys data_con)
+ (read_a1:read_a2:_) = read_args
prec = getPrec is_infix get_fixity dc_nm
------------------------------------------------------------------------
-- Helpers
------------------------------------------------------------------------
mk_alt e1 e2 = genOpApp e1 alt_RDR e2
- bindLex pat = BindStmt pat (HsVar lexP_RDR) loc
- result_stmt c as = ResultStmt (HsApp (HsVar returnM_RDR) (con_app c as)) loc
- con_app c as = mkHsVarApps (getRdrName c) as
+ bindLex pat = noLoc (mkBindStmt pat (nlHsVar lexP_RDR))
+ con_app c as = nlHsVarApps (getRdrName c) as
+ result_expr c as = nlHsApp (nlHsVar returnM_RDR) (con_app c as)
- punc_pat s = ConPatIn punc_RDR (PrefixCon [LitPat (mkHsString s)]) -- Punc 'c'
- ident_pat s = ConPatIn ident_RDR (PrefixCon [LitPat s]) -- Ident "foo"
- symbol_pat s = ConPatIn symbol_RDR (PrefixCon [LitPat s]) -- Symbol ">>"
+ punc_pat s = nlConPat punc_RDR [nlLitPat (mkHsString s)] -- Punc 'c'
+ ident_pat s = nlConPat ident_RDR [nlLitPat (mkHsString s)] -- Ident "foo"
+ symbol_pat s = nlConPat symbol_RDR [nlLitPat (mkHsString s)] -- Symbol ">>"
- data_con_str con = mkHsString (occNameUserString (getOccName con))
+ data_con_str con = occNameString (getOccName con)
read_punc c = bindLex (punc_pat c)
- read_arg a = BindStmt (VarPat a) (mkHsVarApps step_RDR [readPrec_RDR]) loc
+ read_arg a ty
+ | isUnLiftedType ty = pprPanic "Error in deriving:" (text "Can't read unlifted types yet:" <+> ppr ty)
+ | otherwise = noLoc (mkBindStmt (nlVarPat a) (nlHsVarApps step_RDR [readPrec_RDR]))
read_field lbl a = read_lbl lbl ++
[read_punc "=",
- BindStmt (VarPat a) (mkHsVarApps reset_RDR [readPrec_RDR]) loc]
+ noLoc (mkBindStmt (nlVarPat a) (nlHsVarApps reset_RDR [readPrec_RDR]))]
-- When reading field labels we might encounter
-- a = 3
-- _a = 3
-- or (#) = 4
-- Note the parens!
- read_lbl lbl | is_id_start (head lbl_str)
- = [bindLex (ident_pat lbl_lit)]
- | otherwise
+ read_lbl lbl | isSym lbl_str
= [read_punc "(",
- bindLex (symbol_pat lbl_lit),
+ bindLex (symbol_pat lbl_str),
read_punc ")"]
+ | otherwise
+ = [bindLex (ident_pat lbl_str)]
where
- lbl_str = occNameUserString (getOccName (fieldLabelName lbl))
- lbl_lit = mkHsString lbl_str
- is_id_start c = isAlpha c || c == '_'
+ lbl_str = occNameString (getOccName lbl)
\end{code}
-- the most tightly-binding operator
\begin{code}
-gen_Show_binds :: FixityEnv -> TyCon -> RdrNameMonoBinds
+gen_Show_binds :: FixityEnv -> TyCon -> LHsBinds RdrName
gen_Show_binds get_fixity tycon
- = shows_prec `AndMonoBinds` show_list
+ = listToBag [shows_prec, show_list]
where
- tycon_loc = getSrcLoc tycon
+ tycon_loc = getSrcSpan tycon
-----------------------------------------------------------------------
- show_list = mkVarMonoBind tycon_loc showList_RDR
- (HsApp (HsVar showList___RDR) (HsPar (HsApp (HsVar showsPrec_RDR) (mkHsIntLit 0))))
+ show_list = mkVarBind tycon_loc showList_RDR
+ (nlHsApp (nlHsVar showList___RDR) (nlHsPar (nlHsApp (nlHsVar showsPrec_RDR) (nlHsIntLit 0))))
-----------------------------------------------------------------------
- shows_prec = mk_FunMonoBind tycon_loc showsPrec_RDR (map pats_etc (tyConDataCons tycon))
+ shows_prec = mk_FunBind tycon_loc showsPrec_RDR (map pats_etc (tyConDataCons tycon))
where
pats_etc data_con
| nullary_con = -- skip the showParen junk...
ASSERT(null bs_needed)
- ([wildPat, con_pat], mk_showString_app con_str)
+ ([nlWildPat, con_pat], mk_showString_app con_str)
| otherwise =
([a_Pat, con_pat],
- showParen_Expr (HsPar (genOpApp a_Expr ge_RDR (HsLit (HsInt con_prec_plus_one))))
- (HsPar (nested_compose_Expr show_thingies)))
+ showParen_Expr (nlHsPar (genOpApp a_Expr ge_RDR (nlHsLit (HsInt con_prec_plus_one))))
+ (nlHsPar (nested_compose_Expr show_thingies)))
where
data_con_RDR = getRdrName data_con
con_arity = dataConSourceArity data_con
bs_needed = take con_arity bs_RDRs
- con_pat = mkConPat data_con_RDR bs_needed
+ arg_tys = dataConOrigArgTys data_con -- Correspond 1-1 with bs_needed
+ con_pat = nlConVarPat data_con_RDR bs_needed
nullary_con = con_arity == 0
labels = dataConFieldLabels data_con
lab_fields = length labels
dc_nm = getName data_con
dc_occ_nm = getOccName data_con
- con_str = occNameUserString dc_occ_nm
+ con_str = occNameString dc_occ_nm
+ op_con_str = wrapOpParens con_str
+ backquote_str = wrapOpBackquotes con_str
show_thingies
- | is_infix = [show_arg1, mk_showString_app (" " ++ con_str ++ " "), show_arg2]
- | record_syntax = mk_showString_app (con_str ++ " {") :
+ | is_infix = [show_arg1, mk_showString_app (" " ++ backquote_str ++ " "), show_arg2]
+ | record_syntax = mk_showString_app (op_con_str ++ " {") :
show_record_args ++ [mk_showString_app "}"]
- | otherwise = mk_showString_app (con_str ++ " ") : show_prefix_args
+ | otherwise = mk_showString_app (op_con_str ++ " ") : show_prefix_args
- show_label l = mk_showString_app (the_name ++ " = ")
+ show_label l = mk_showString_app (nm ++ " = ")
-- Note the spaces around the "=" sign. If we don't have them
-- then we get Foo { x=-1 } and the "=-" parses as a single
-- lexeme. Only the space after the '=' is necessary, but
-- it seems tidier to have them both sides.
where
- occ_nm = getOccName (fieldLabelName l)
- nm = occNameUserString occ_nm
+ occ_nm = getOccName l
+ nm = wrapOpParens (occNameString occ_nm)
- is_op = isSymOcc occ_nm -- Legal, but rare.
- the_name
- | is_op = '(':nm ++ ")"
- | otherwise = nm
-
- show_args = [ mkHsApps showsPrec_RDR [HsLit (HsInt arg_prec), HsVar b]
- | b <- bs_needed ]
+ show_args = zipWith show_arg bs_needed arg_tys
(show_arg1:show_arg2:_) = show_args
- show_prefix_args = intersperse (HsVar showSpace_RDR) show_args
+ show_prefix_args = intersperse (nlHsVar showSpace_RDR) show_args
-- Assumption for record syntax: no of fields == no of labelled fields
-- (and in same order)
| (lbl,arg) <- zipEqual "gen_Show_binds"
labels show_args ]
+ -- Generates (showsPrec p x) for argument x, but it also boxes
+ -- the argument first if necessary. Note that this prints unboxed
+ -- things without any '#' decorations; could change that if need be
+ show_arg b arg_ty = nlHsApps showsPrec_RDR [nlHsLit (HsInt arg_prec),
+ box_if_necy "Show" tycon (nlHsVar b) arg_ty]
+
-- Fixity stuff
- is_infix = isDataSymOcc dc_occ_nm
+ is_infix = dataConIsInfix data_con
con_prec_plus_one = 1 + getPrec is_infix get_fixity dc_nm
arg_prec | record_syntax = 0 -- Record fields don't need parens
| otherwise = con_prec_plus_one
-mk_showString_app str = HsApp (HsVar showString_RDR) (HsLit (mkHsString str))
+wrapOpParens :: String -> String
+wrapOpParens s | isSym s = '(' : s ++ ")"
+ | otherwise = s
+
+wrapOpBackquotes :: String -> String
+wrapOpBackquotes s | isSym s = s
+ | otherwise = '`' : s ++ "`"
+
+isSym :: String -> Bool
+isSym "" = False
+isSym (c:cs) = startsVarSym c || startsConSym c
+
+mk_showString_app str = nlHsApp (nlHsVar showString_RDR) (nlHsLit (mkHsString str))
\end{code}
\begin{code}
getPrecedence get_fixity nm
= case lookupFixity get_fixity nm of
Fixity x _ -> fromIntegral x
-
-isLRAssoc :: FixityEnv -> Name -> (Bool, Bool)
-isLRAssoc get_fixity nm =
- case lookupFixity get_fixity nm of
- Fixity _ InfixN -> (False, False)
- Fixity _ InfixR -> (False, True)
- Fixity _ InfixL -> (True, False)
\end{code}
we generate
- instance (Typeable a, Typeable b) => Typeable (T a b) where
- typeOf _ = mkTypeRep (mkTyConRep "T")
- [typeOf (undefined::a),
- typeOf (undefined::b)]
+ instance Typeable2 T where
+ typeOf2 _ = mkTyConApp (mkTyConRep "T") []
-Notice the use of lexically scoped type variables.
+We are passed the Typeable2 class as well as T
\begin{code}
-gen_Typeable_binds :: TyCon -> RdrNameMonoBinds
+gen_Typeable_binds :: TyCon -> LHsBinds RdrName
gen_Typeable_binds tycon
- = mk_easy_FunMonoBind tycon_loc typeOf_RDR [wildPat] []
- (mkHsApps mkTypeRep_RDR [tycon_rep, arg_reps])
+ = unitBag $
+ mk_easy_FunBind tycon_loc
+ (mk_typeOf_RDR tycon) -- Name of appropriate type0f function
+ [nlWildPat]
+ (nlHsApps mkTypeRep_RDR [tycon_rep, nlList []])
where
- tycon_loc = getSrcLoc tycon
- tyvars = tyConTyVars tycon
- tycon_rep = HsVar mkTyConRep_RDR `HsApp` HsLit (mkHsString (showSDoc (ppr tycon)))
- arg_reps = ExplicitList placeHolderType (map mk tyvars)
- mk tyvar = HsApp (HsVar typeOf_RDR)
- (ExprWithTySig (HsVar undefined_RDR)
- (HsTyVar (getRdrName tyvar)))
+ tycon_loc = getSrcSpan tycon
+ tycon_rep = nlHsVar mkTyConRep_RDR `nlHsApp` nlHsLit (mkHsString (showSDoc (ppr tycon)))
+
+mk_typeOf_RDR :: TyCon -> RdrName
+-- Use the arity of the TyCon to make the right typeOfn function
+mk_typeOf_RDR tycon = varQual_RDR tYPEABLE (mkFastString ("typeOf" ++ suffix))
+ where
+ arity = tyConArity tycon
+ suffix | arity == 0 = ""
+ | otherwise = show arity
\end{code}
we generate
- instance (Data a, Data b) => Data (T a b) where
- gfoldl k z (T1 a b) = z T `k` a `k` b
- gfoldl k z T2 = z T2
- -- ToDo: add gmapT,Q,M, gfoldr
-
- gunfold k z _ (Constr "T1") = k (k (z T1))
- gunfold k z _ (Constr "T2") = z T2
- gunfold _ _ e _ = e
+ $cT1 = mkDataCon $dT "T1" Prefix
+ $cT2 = mkDataCon $dT "T2" Prefix
+ $dT = mkDataType "Module.T" [] [$con_T1, $con_T2]
+ -- the [] is for field labels.
- conOf (T1 _ _) = Constr "T1"
- conOf T2 = Constr "T2"
-
- consOf _ = [Constr "T1", Constr "T2"]
-
-ToDo: generate auxiliary bindings for the Constrs?
+ instance (Data a, Data b) => Data (T a b) where
+ gfoldl k z (T1 a b) = z T `k` a `k` b
+ gfoldl k z T2 = z T2
+ -- ToDo: add gmapT,Q,M, gfoldr
+
+ gunfold k z c = case conIndex c of
+ I# 1# -> k (k (z T1))
+ I# 2# -> z T2
+
+ toConstr (T1 _ _) = $cT1
+ toConstr T2 = $cT2
+
+ dataTypeOf _ = $dT
\begin{code}
-gen_Data_binds :: TyCon -> RdrNameMonoBinds
-gen_Data_binds tycon
- = andMonoBindList [gfoldl_bind, gunfold_bind, conOf_bind, consOf_bind]
+gen_Data_binds :: FixityEnv
+ -> TyCon
+ -> (LHsBinds RdrName, -- The method bindings
+ LHsBinds RdrName) -- Auxiliary bindings
+gen_Data_binds fix_env tycon
+ = (listToBag [gfoldl_bind, gunfold_bind, toCon_bind, dataTypeOf_bind],
+ -- Auxiliary definitions: the data type and constructors
+ datatype_bind `consBag` listToBag (map mk_con_bind data_cons))
where
- tycon_loc = getSrcLoc tycon
- data_cons = tyConDataCons tycon
+ tycon_loc = getSrcSpan tycon
+ tycon_name = tyConName tycon
+ data_cons = tyConDataCons tycon
+ n_cons = length data_cons
+ one_constr = n_cons == 1
------------ gfoldl
- gfoldl_bind = mk_FunMonoBind tycon_loc gfoldl_RDR (map gfoldl_eqn data_cons)
- gfoldl_eqn con = ([VarPat k_RDR, VarPat z_RDR, mkConPat con_name as_needed],
- foldl mk_k_app (HsVar z_RDR `HsApp` HsVar con_name) as_needed)
+ gfoldl_bind = mk_FunBind tycon_loc gfoldl_RDR (map gfoldl_eqn data_cons)
+ gfoldl_eqn con = ([nlVarPat k_RDR, nlVarPat z_RDR, nlConVarPat con_name as_needed],
+ foldl mk_k_app (nlHsVar z_RDR `nlHsApp` nlHsVar con_name) as_needed)
where
- con_name :: RdrName
+ con_name :: RdrName
con_name = getRdrName con
as_needed = take (dataConSourceArity con) as_RDRs
- mk_k_app e v = HsPar (mkHsOpApp e k_RDR (HsVar v))
+ mk_k_app e v = nlHsPar (nlHsOpApp e k_RDR (nlHsVar v))
------------ gunfold
- gunfold_bind = mk_FunMonoBind tycon_loc gunfold_RDR (map gunfold_eqn data_cons ++ [catch_all])
- gunfold_eqn con = ([VarPat k_RDR, VarPat z_RDR, wildPat,
- ConPatIn constr_RDR (PrefixCon [LitPat (mk_constr_string con)])],
- apN (dataConSourceArity con)
- (\e -> HsVar k_RDR `HsApp` e)
- (z_Expr `HsApp` HsVar (getRdrName con)))
- catch_all = ([wildPat, wildPat, VarPat e_RDR, wildPat], HsVar e_RDR)
- mk_constr_string con = mkHsString (occNameUserString (getOccName con))
-
- ------------ conOf
- conOf_bind = mk_FunMonoBind tycon_loc conOf_RDR (map conOf_eqn data_cons)
- conOf_eqn con = ([mkWildConPat con], mk_constr con)
-
- ------------ consOf
- consOf_bind = mk_easy_FunMonoBind tycon_loc consOf_RDR [wildPat] []
- (ExplicitList placeHolderType (map mk_constr data_cons))
- mk_constr con = HsVar constr_RDR `HsApp` (HsLit (mk_constr_string con))
-
-
-apN :: Int -> (a -> a) -> a -> a
-apN 0 k z = z
-apN n k z = apN (n-1) k (k z)
+ gunfold_bind = mk_FunBind tycon_loc
+ gunfold_RDR
+ [([k_Pat, z_Pat, if one_constr then nlWildPat else c_Pat],
+ gunfold_rhs)]
+
+ gunfold_rhs
+ | one_constr = mk_unfold_rhs (head data_cons) -- No need for case
+ | otherwise = nlHsCase (nlHsVar conIndex_RDR `nlHsApp` c_Expr)
+ (map gunfold_alt data_cons)
+
+ gunfold_alt dc = mkSimpleHsAlt (mk_unfold_pat dc) (mk_unfold_rhs dc)
+ mk_unfold_rhs dc = foldr nlHsApp
+ (nlHsVar z_RDR `nlHsApp` nlHsVar (getRdrName dc))
+ (replicate (dataConSourceArity dc) (nlHsVar k_RDR))
+
+ mk_unfold_pat dc -- Last one is a wild-pat, to avoid
+ -- redundant test, and annoying warning
+ | tag-fIRST_TAG == n_cons-1 = nlWildPat -- Last constructor
+ | otherwise = nlConPat intDataCon_RDR [nlLitPat (HsIntPrim (toInteger tag))]
+ where
+ tag = dataConTag dc
+
+ ------------ toConstr
+ toCon_bind = mk_FunBind tycon_loc toConstr_RDR (map to_con_eqn data_cons)
+ to_con_eqn dc = ([nlWildConPat dc], nlHsVar (mk_constr_name dc))
+
+ ------------ dataTypeOf
+ dataTypeOf_bind = mk_easy_FunBind
+ tycon_loc
+ dataTypeOf_RDR
+ [nlWildPat]
+ (nlHsVar data_type_name)
+
+ ------------ $dT
+
+ data_type_name = mkDerivedRdrName tycon_name mkDataTOcc
+ datatype_bind = mkVarBind
+ tycon_loc
+ data_type_name
+ ( nlHsVar mkDataType_RDR
+ `nlHsApp` nlHsLit (mkHsString (showSDoc (ppr tycon)))
+ `nlHsApp` nlList constrs
+ )
+ constrs = [nlHsVar (mk_constr_name con) | con <- data_cons]
+
+
+ ------------ $cT1 etc
+ mk_constr_name con = mkDerivedRdrName (dataConName con) mkDataCOcc
+ mk_con_bind dc = mkVarBind
+ tycon_loc
+ (mk_constr_name dc)
+ (nlHsApps mkConstr_RDR (constr_args dc))
+ constr_args dc =
+ [ -- nlHsIntLit (toInteger (dataConTag dc)), -- Tag
+ nlHsVar data_type_name, -- DataType
+ nlHsLit (mkHsString (occNameString dc_occ)), -- String name
+ nlList labels, -- Field labels
+ nlHsVar fixity] -- Fixity
+ where
+ labels = map (nlHsLit . mkHsString . getOccString)
+ (dataConFieldLabels dc)
+ dc_occ = getOccName dc
+ is_infix = isDataSymOcc dc_occ
+ fixity | is_infix = infix_RDR
+ | otherwise = prefix_RDR
+
+gfoldl_RDR = varQual_RDR gENERICS FSLIT("gfoldl")
+gunfold_RDR = varQual_RDR gENERICS FSLIT("gunfold")
+toConstr_RDR = varQual_RDR gENERICS FSLIT("toConstr")
+dataTypeOf_RDR = varQual_RDR gENERICS FSLIT("dataTypeOf")
+mkConstr_RDR = varQual_RDR gENERICS FSLIT("mkConstr")
+mkDataType_RDR = varQual_RDR gENERICS FSLIT("mkDataType")
+conIndex_RDR = varQual_RDR gENERICS FSLIT("constrIndex")
+prefix_RDR = dataQual_RDR gENERICS FSLIT("Prefix")
+infix_RDR = dataQual_RDR gENERICS FSLIT("Infix")
\end{code}
%************************************************************************
= GenCon2Tag | GenTag2Con | GenMaxTag
gen_tag_n_con_monobind
- :: (RdrName, -- (proto)Name for the thing in question
+ :: ( RdrName, -- (proto)Name for the thing in question
TyCon, -- tycon in question
TagThingWanted)
- -> RdrNameMonoBinds
+ -> LHsBind RdrName
gen_tag_n_con_monobind (rdr_name, tycon, GenCon2Tag)
| lots_of_constructors
- = mk_FunMonoBind loc rdr_name [([], get_tag_rhs)]
+ = mk_FunBind tycon_loc rdr_name [([], get_tag_rhs)]
| otherwise
- = mk_FunMonoBind loc rdr_name (map mk_stuff (tyConDataCons tycon))
+ = mk_FunBind tycon_loc rdr_name (map mk_stuff (tyConDataCons tycon))
where
- loc = getSrcLoc tycon
+ tycon_loc = getSrcSpan tycon
+
+ tvs = map (mkRdrUnqual . getOccName) (tyConTyVars tycon)
+ -- We can't use gerRdrName because that makes an Exact RdrName
+ -- and we can't put them in the LocalRdrEnv
-- Give a signature to the bound variable, so
-- that the case expression generated by getTag is
-- monomorphic. In the push-enter model we get better code.
- get_tag_rhs = ExprWithTySig
- (HsLam (mk_match loc [VarPat a_RDR]
- (HsApp getTag_Expr a_Expr)
- EmptyBinds))
- (HsForAllTy Nothing [] con2tag_ty)
- -- Nothing => implicit quantification
-
- con2tag_ty = foldl HsAppTy (HsTyVar (getRdrName tycon))
- [HsTyVar (getRdrName tv) | tv <- tyConTyVars tycon]
- `HsFunTy`
- HsTyVar (getRdrName intPrimTyConName)
+ get_tag_rhs = noLoc $ ExprWithTySig
+ (nlHsLam (mkSimpleHsAlt (nlVarPat a_RDR)
+ (nlHsApp (nlHsVar getTag_RDR) a_Expr)))
+ (noLoc (mkExplicitHsForAllTy (map (noLoc.UserTyVar) tvs) (noLoc []) con2tag_ty))
+
+ con2tag_ty = foldl nlHsAppTy (nlHsTyVar (getRdrName tycon))
+ (map nlHsTyVar tvs)
+ `nlHsFunTy`
+ nlHsTyVar (getRdrName intPrimTyCon)
lots_of_constructors = tyConFamilySize tycon > mAX_FAMILY_SIZE_FOR_VEC_RETURNS
- mk_stuff :: DataCon -> ([RdrNamePat], RdrNameHsExpr)
- mk_stuff con = ([mkWildConPat con],
- HsLit (HsIntPrim (toInteger ((dataConTag con) - fIRST_TAG))))
+ mk_stuff :: DataCon -> ([LPat RdrName], LHsExpr RdrName)
+ mk_stuff con = ([nlWildConPat con],
+ nlHsLit (HsIntPrim (toInteger ((dataConTag con) - fIRST_TAG))))
gen_tag_n_con_monobind (rdr_name, tycon, GenTag2Con)
- = mk_FunMonoBind (getSrcLoc tycon) rdr_name
- [([mkConPat mkInt_RDR [a_RDR]],
- ExprWithTySig (HsApp tagToEnum_Expr a_Expr)
- (HsTyVar (getRdrName tycon)))]
+ = mk_FunBind (getSrcSpan tycon) rdr_name
+ [([nlConVarPat intDataCon_RDR [a_RDR]],
+ noLoc (ExprWithTySig (nlHsApp (nlHsVar tagToEnum_RDR) a_Expr)
+ (nlHsTyVar (getRdrName tycon))))]
gen_tag_n_con_monobind (rdr_name, tycon, GenMaxTag)
- = mkVarMonoBind (getSrcLoc tycon) rdr_name
- (HsApp (HsVar mkInt_RDR) (HsLit (HsIntPrim max_tag)))
+ = mkVarBind (getSrcSpan tycon) rdr_name
+ (nlHsApp (nlHsVar intDataCon_RDR) (nlHsLit (HsIntPrim max_tag)))
where
max_tag = case (tyConDataCons tycon) of
data_cons -> toInteger ((length data_cons) - fIRST_TAG)
%* *
%************************************************************************
-@mk_easy_FunMonoBind fun pats binds expr@ generates:
-\begin{verbatim}
- fun pat1 pat2 ... patN = expr where binds
-\end{verbatim}
-
-@mk_FunMonoBind fun [([p1a, p1b, ...], e1), ...]@ is for
-multi-clause definitions; it generates:
-\begin{verbatim}
- fun p1a p1b ... p1N = e1
- fun p2a p2b ... p2N = e2
- ...
- fun pMa pMb ... pMN = eM
-\end{verbatim}
-
-\begin{code}
-mkVarMonoBind :: SrcLoc -> RdrName -> RdrNameHsExpr -> RdrNameMonoBinds
-mkVarMonoBind loc var rhs = mk_easy_FunMonoBind loc var [] [] rhs
-
-mk_easy_FunMonoBind :: SrcLoc -> RdrName -> [RdrNamePat]
- -> [RdrNameMonoBinds] -> RdrNameHsExpr
- -> RdrNameMonoBinds
-
-mk_easy_FunMonoBind loc fun pats binds expr
- = FunMonoBind fun False{-not infix-} [mk_easy_Match loc pats binds expr] loc
-
-mk_easy_Match loc pats binds expr
- = mk_match loc pats expr (mkMonoBind Recursive (andMonoBindList binds))
- -- The renamer expects everything in its input to be a
- -- "recursive" MonoBinds, and it is its job to sort things out
- -- from there.
-
-mk_FunMonoBind :: SrcLoc -> RdrName
- -> [([RdrNamePat], RdrNameHsExpr)]
- -> RdrNameMonoBinds
-
-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
- = Match (map paren pats) Nothing
- (GRHSs (unguardedRHS expr loc) binds placeHolderType)
- where
- paren p@(VarPat _) = p
- paren other_p = ParPat other_p
-\end{code}
-
-\begin{code}
-mkHsApps f xs = foldl HsApp (HsVar f) xs
-mkHsVarApps f xs = foldl HsApp (HsVar f) (map HsVar xs)
-
-mkHsIntLit n = HsLit (HsInt n)
-mkHsString s = HsString (mkFastString s)
-mkHsChar c = HsChar (ord c)
-
-mkConPat con vars = ConPatIn con (PrefixCon (map VarPat vars))
-mkNullaryConPat con = ConPatIn con (PrefixCon [])
-mkWildConPat con = ConPatIn (getRdrName con) (PrefixCon (nOfThem (dataConSourceArity con) wildPat))
-\end{code}
ToDo: Better SrcLocs.
\begin{code}
compare_gen_Case ::
- RdrNameHsExpr -- What to do for equality
- -> RdrNameHsExpr -> RdrNameHsExpr
- -> RdrNameHsExpr
+ LHsExpr RdrName -- What to do for equality
+ -> LHsExpr RdrName -> LHsExpr RdrName
+ -> LHsExpr RdrName
careful_compare_Case :: -- checks for primitive types...
- Type
- -> RdrNameHsExpr -- What to do for equality
- -> RdrNameHsExpr -> RdrNameHsExpr
- -> RdrNameHsExpr
+ TyCon -- The tycon we are deriving for
+ -> Type
+ -> LHsExpr RdrName -- What to do for equality
+ -> LHsExpr RdrName -> LHsExpr RdrName
+ -> LHsExpr RdrName
-cmp_eq_Expr a b = HsApp (HsApp (HsVar cmp_eq_RDR) a) b
+cmp_eq_Expr a b = nlHsApp (nlHsApp (nlHsVar cmp_eq_RDR) a) b
-- Was: compare_gen_Case cmp_eq_RDR
-compare_gen_Case (HsVar eq_tag) a b | eq_tag == eqTag_RDR
- = HsApp (HsApp (HsVar compare_RDR) a) b -- Simple case
+compare_gen_Case (L _ (HsVar eq_tag)) a b | eq_tag == eqTag_RDR
+ = nlHsApp (nlHsApp (nlHsVar compare_RDR) a) b -- Simple case
compare_gen_Case eq a b -- General case
- = HsCase (HsPar (HsApp (HsApp (HsVar compare_RDR) a) b)) {-of-}
- [mkSimpleMatch [mkNullaryConPat ltTag_RDR] ltTag_Expr placeHolderType generatedSrcLoc,
- mkSimpleMatch [mkNullaryConPat eqTag_RDR] eq placeHolderType generatedSrcLoc,
- mkSimpleMatch [mkNullaryConPat gtTag_RDR] gtTag_Expr placeHolderType generatedSrcLoc]
- generatedSrcLoc
-
-careful_compare_Case ty eq a b
- | not (isUnLiftedType ty) =
- compare_gen_Case eq a b
- | otherwise =
- -- we have to do something special for primitive things...
- HsIf (genOpApp a relevant_eq_op b)
- eq
- (HsIf (genOpApp a relevant_lt_op b) ltTag_Expr gtTag_Expr generatedSrcLoc)
- generatedSrcLoc
+ = nlHsCase (nlHsPar (nlHsApp (nlHsApp (nlHsVar compare_RDR) a) b)) {-of-}
+ [mkSimpleHsAlt (nlNullaryConPat ltTag_RDR) ltTag_Expr,
+ mkSimpleHsAlt (nlNullaryConPat eqTag_RDR) eq,
+ mkSimpleHsAlt (nlNullaryConPat gtTag_RDR) gtTag_Expr]
+
+careful_compare_Case tycon ty eq a b
+ | not (isUnLiftedType ty)
+ = compare_gen_Case eq a b
+ | otherwise -- We have to do something special for primitive things...
+ = nlHsIf (genOpApp a relevant_eq_op b)
+ eq
+ (nlHsIf (genOpApp a relevant_lt_op b) ltTag_Expr gtTag_Expr)
where
- relevant_eq_op = assoc_ty_id eq_op_tbl ty
- relevant_lt_op = assoc_ty_id lt_op_tbl ty
-
-assoc_ty_id tyids ty
- = if null res then panic "assoc_ty"
- else head res
+ relevant_eq_op = primOpRdrName (assoc_ty_id "Ord" tycon eq_op_tbl ty)
+ relevant_lt_op = primOpRdrName (assoc_ty_id "Ord" tycon lt_op_tbl ty)
+
+
+box_if_necy :: String -- The class involved
+ -> TyCon -- The tycon involved
+ -> LHsExpr RdrName -- The argument
+ -> Type -- The argument type
+ -> LHsExpr RdrName -- Boxed version of the arg
+box_if_necy cls_str tycon arg arg_ty
+ | isUnLiftedType arg_ty = nlHsApp (nlHsVar box_con) arg
+ | otherwise = arg
+ where
+ box_con = assoc_ty_id cls_str tycon box_con_tbl arg_ty
+
+assoc_ty_id :: String -- The class involved
+ -> TyCon -- The tycon involved
+ -> [(Type,a)] -- The table
+ -> Type -- The type
+ -> a -- The result of the lookup
+assoc_ty_id cls_str tycon tbl ty
+ | null res = pprPanic "Error in deriving:" (text "Can't derive" <+> text cls_str <+>
+ text "for primitive type" <+> ppr ty)
+ | otherwise = head res
where
- res = [id | (ty',id) <- tyids, ty `tcEqType` ty']
+ res = [id | (ty',id) <- tbl, ty `tcEqType` ty']
+eq_op_tbl :: [(Type, PrimOp)]
eq_op_tbl =
- [(charPrimTy, eqChar_RDR)
- ,(intPrimTy, eqInt_RDR)
- ,(wordPrimTy, eqWord_RDR)
- ,(addrPrimTy, eqAddr_RDR)
- ,(floatPrimTy, eqFloat_RDR)
- ,(doublePrimTy, eqDouble_RDR)
+ [(charPrimTy, CharEqOp)
+ ,(intPrimTy, IntEqOp)
+ ,(wordPrimTy, WordEqOp)
+ ,(addrPrimTy, AddrEqOp)
+ ,(floatPrimTy, FloatEqOp)
+ ,(doublePrimTy, DoubleEqOp)
]
+lt_op_tbl :: [(Type, PrimOp)]
lt_op_tbl =
- [(charPrimTy, ltChar_RDR)
- ,(intPrimTy, ltInt_RDR)
- ,(wordPrimTy, ltWord_RDR)
- ,(addrPrimTy, ltAddr_RDR)
- ,(floatPrimTy, ltFloat_RDR)
- ,(doublePrimTy, ltDouble_RDR)
+ [(charPrimTy, CharLtOp)
+ ,(intPrimTy, IntLtOp)
+ ,(wordPrimTy, WordLtOp)
+ ,(addrPrimTy, AddrLtOp)
+ ,(floatPrimTy, FloatLtOp)
+ ,(doublePrimTy, DoubleLtOp)
]
------------------------------------------------------------------------
+box_con_tbl =
+ [(charPrimTy, getRdrName charDataCon)
+ ,(intPrimTy, getRdrName intDataCon)
+ ,(wordPrimTy, wordDataCon_RDR)
+ ,(addrPrimTy, addrDataCon_RDR)
+ ,(floatPrimTy, getRdrName floatDataCon)
+ ,(doublePrimTy, getRdrName doubleDataCon)
+ ]
-and_Expr, append_Expr :: RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr
+-----------------------------------------------------------------------
-and_Expr a b = genOpApp a and_RDR b
-append_Expr a b = genOpApp a append_RDR b
+and_Expr :: LHsExpr RdrName -> LHsExpr RdrName -> LHsExpr RdrName
+and_Expr a b = genOpApp a and_RDR b
-----------------------------------------------------------------------
-eq_Expr :: Type -> RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr
-eq_Expr ty a b = genOpApp a eq_op b
+eq_Expr :: TyCon -> Type -> LHsExpr RdrName -> LHsExpr RdrName -> LHsExpr RdrName
+eq_Expr tycon ty a b = genOpApp a eq_op b
where
eq_op
| not (isUnLiftedType ty) = eq_RDR
- | otherwise =
+ | otherwise = primOpRdrName (assoc_ty_id "Eq" tycon eq_op_tbl ty)
-- we have to do something special for primitive things...
- assoc_ty_id eq_op_tbl ty
-
\end{code}
\begin{code}
-untag_Expr :: TyCon -> [(RdrName, RdrName)] -> RdrNameHsExpr -> RdrNameHsExpr
+untag_Expr :: TyCon -> [( RdrName, RdrName)] -> LHsExpr RdrName -> LHsExpr RdrName
untag_Expr tycon [] expr = expr
untag_Expr tycon ((untag_this, put_tag_here) : more) expr
- = HsCase (HsPar (HsApp (con2tag_Expr tycon) (HsVar untag_this))) {-of-}
- [mkSimpleMatch [VarPat put_tag_here] (untag_Expr tycon more expr) placeHolderType generatedSrcLoc]
- generatedSrcLoc
+ = nlHsCase (nlHsPar (nlHsVarApps (con2tag_RDR tycon) [untag_this])) {-of-}
+ [mkSimpleHsAlt (nlVarPat put_tag_here) (untag_Expr tycon more expr)]
-cmp_tags_Expr :: RdrName -- Comparison op
- -> RdrName -> RdrName -- Things to compare
- -> RdrNameHsExpr -- What to return if true
- -> RdrNameHsExpr -- What to return if false
- -> RdrNameHsExpr
+cmp_tags_Expr :: RdrName -- Comparison op
+ -> RdrName -> RdrName -- Things to compare
+ -> LHsExpr RdrName -- What to return if true
+ -> LHsExpr RdrName -- What to return if false
+ -> LHsExpr RdrName
cmp_tags_Expr op a b true_case false_case
- = HsIf (genOpApp (HsVar a) op (HsVar b)) true_case false_case generatedSrcLoc
+ = nlHsIf (genOpApp (nlHsVar a) op (nlHsVar b)) true_case false_case
enum_from_to_Expr
- :: RdrNameHsExpr -> RdrNameHsExpr
- -> RdrNameHsExpr
+ :: LHsExpr RdrName -> LHsExpr RdrName
+ -> LHsExpr RdrName
enum_from_then_to_Expr
- :: RdrNameHsExpr -> RdrNameHsExpr -> RdrNameHsExpr
- -> RdrNameHsExpr
+ :: LHsExpr RdrName -> LHsExpr RdrName -> LHsExpr RdrName
+ -> LHsExpr RdrName
-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
+enum_from_to_Expr f t2 = nlHsApp (nlHsApp (nlHsVar enumFromTo_RDR) f) t2
+enum_from_then_to_Expr f t t2 = nlHsApp (nlHsApp (nlHsApp (nlHsVar enumFromThenTo_RDR) f) t) t2
showParen_Expr
- :: RdrNameHsExpr -> RdrNameHsExpr
- -> RdrNameHsExpr
+ :: LHsExpr RdrName -> LHsExpr RdrName
+ -> LHsExpr RdrName
-showParen_Expr e1 e2 = HsApp (HsApp (HsVar showParen_RDR) e1) e2
+showParen_Expr e1 e2 = nlHsApp (nlHsApp (nlHsVar showParen_RDR) e1) e2
-nested_compose_Expr :: [RdrNameHsExpr] -> RdrNameHsExpr
+nested_compose_Expr :: [LHsExpr RdrName] -> LHsExpr RdrName
nested_compose_Expr [e] = parenify e
nested_compose_Expr (e:es)
- = HsApp (HsApp (HsVar compose_RDR) (parenify e)) (nested_compose_Expr es)
+ = nlHsApp (nlHsApp (nlHsVar compose_RDR) (parenify e)) (nested_compose_Expr es)
-- 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 (mkFastString "Urk! in TcGenDeriv")))
+impossible_Expr = nlHsApp (nlHsVar error_RDR) (nlHsLit (mkHsString "Urk! in TcGenDeriv"))
-- illegal_Expr is used when signalling error conditions in the RHS of a derived
-- method. It is currently only used by Enum.{succ,pred}
illegal_Expr meth tp msg =
- HsApp (HsVar error_RDR) (HsLit (HsString (mkFastString (meth ++ '{':tp ++ "}: " ++ msg))))
+ nlHsApp (nlHsVar error_RDR) (nlHsLit (mkHsString (meth ++ '{':tp ++ "}: " ++ msg)))
-- illegal_toEnum_tag is an extended version of illegal_Expr, which also allows you
-- to include the value of a_RDR in the error string.
illegal_toEnum_tag tp maxtag =
- HsApp (HsVar error_RDR)
- (HsApp (HsApp (HsVar append_RDR)
- (HsLit (HsString (mkFastString ("toEnum{" ++ tp ++ "}: tag (")))))
- (HsApp (HsApp (HsApp
- (HsVar showsPrec_RDR)
- (mkHsIntLit 0))
- (HsVar a_RDR))
- (HsApp (HsApp
- (HsVar append_RDR)
- (HsLit (HsString (mkFastString ") is outside of enumeration's range (0,"))))
- (HsApp (HsApp (HsApp
- (HsVar showsPrec_RDR)
- (mkHsIntLit 0))
- (HsVar maxtag))
- (HsLit (HsString (mkFastString ")")))))))
-
-parenify e@(HsVar _) = e
-parenify e = HsPar e
+ nlHsApp (nlHsVar error_RDR)
+ (nlHsApp (nlHsApp (nlHsVar append_RDR)
+ (nlHsLit (mkHsString ("toEnum{" ++ tp ++ "}: tag ("))))
+ (nlHsApp (nlHsApp (nlHsApp
+ (nlHsVar showsPrec_RDR)
+ (nlHsIntLit 0))
+ (nlHsVar a_RDR))
+ (nlHsApp (nlHsApp
+ (nlHsVar append_RDR)
+ (nlHsLit (mkHsString ") is outside of enumeration's range (0,")))
+ (nlHsApp (nlHsApp (nlHsApp
+ (nlHsVar showsPrec_RDR)
+ (nlHsIntLit 0))
+ (nlHsVar maxtag))
+ (nlHsLit (mkHsString ")"))))))
+
+parenify e@(L _ (HsVar _)) = e
+parenify e = mkHsPar e
-- 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.
+genOpApp e1 op e2 = nlHsPar (nlHsOpApp e1 op e2)
+\end{code}
-genOpApp e1 op e2 = mkHsOpApp e1 op e2
+\begin{code}
+getSrcSpan = srcLocSpan . getSrcLoc
\end{code}
\begin{code}
-varUnqual n = mkUnqual OccName.varName n
-
-zz_a_RDR = varUnqual FSLIT("_a")
-a_RDR = varUnqual FSLIT("a")
-b_RDR = varUnqual FSLIT("b")
-c_RDR = varUnqual FSLIT("c")
-d_RDR = varUnqual FSLIT("d")
-e_RDR = varUnqual FSLIT("e")
-k_RDR = varUnqual FSLIT("k")
-z_RDR = varUnqual FSLIT("z") :: RdrName
-ah_RDR = varUnqual FSLIT("a#")
-bh_RDR = varUnqual FSLIT("b#")
-ch_RDR = varUnqual FSLIT("c#")
-dh_RDR = varUnqual FSLIT("d#")
-cmp_eq_RDR = varUnqual FSLIT("cmp_eq")
-rangeSize_RDR = varUnqual FSLIT("rangeSize")
-
-as_RDRs = [ varUnqual (mkFastString ("a"++show i)) | i <- [(1::Int) .. ] ]
-bs_RDRs = [ varUnqual (mkFastString ("b"++show i)) | i <- [(1::Int) .. ] ]
-cs_RDRs = [ varUnqual (mkFastString ("c"++show i)) | i <- [(1::Int) .. ] ]
-
-zz_a_Expr = HsVar zz_a_RDR
-a_Expr = HsVar a_RDR
-b_Expr = HsVar b_RDR
-c_Expr = HsVar c_RDR
-d_Expr = HsVar d_RDR
-z_Expr = HsVar z_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
-
-getTag_Expr = HsVar getTag_RDR
-tagToEnum_Expr = HsVar tagToEnum_RDR
-con2tag_Expr tycon = HsVar (con2tag_RDR tycon)
-
-wildPat = WildPat placeHolderType
-zz_a_Pat = VarPat zz_a_RDR
-a_Pat = VarPat a_RDR
-b_Pat = VarPat b_RDR
-c_Pat = VarPat c_RDR
-d_Pat = VarPat d_RDR
-
-con2tag_RDR, tag2con_RDR, maxtag_RDR :: TyCon -> RdrName
-
-con2tag_RDR tycon = varUnqual (mkFastString ("con2tag_" ++ occNameString (getOccName tycon) ++ "#"))
-tag2con_RDR tycon = varUnqual (mkFastString ("tag2con_" ++ occNameString (getOccName tycon) ++ "#"))
-maxtag_RDR tycon = varUnqual (mkFastString ("maxtag_" ++ occNameString (getOccName tycon) ++ "#"))
+a_RDR = mkVarUnqual FSLIT("a")
+b_RDR = mkVarUnqual FSLIT("b")
+c_RDR = mkVarUnqual FSLIT("c")
+d_RDR = mkVarUnqual FSLIT("d")
+k_RDR = mkVarUnqual FSLIT("k")
+z_RDR = mkVarUnqual FSLIT("z")
+ah_RDR = mkVarUnqual FSLIT("a#")
+bh_RDR = mkVarUnqual FSLIT("b#")
+ch_RDR = mkVarUnqual FSLIT("c#")
+dh_RDR = mkVarUnqual FSLIT("d#")
+cmp_eq_RDR = mkVarUnqual FSLIT("cmp_eq")
+
+as_RDRs = [ mkVarUnqual (mkFastString ("a"++show i)) | i <- [(1::Int) .. ] ]
+bs_RDRs = [ mkVarUnqual (mkFastString ("b"++show i)) | i <- [(1::Int) .. ] ]
+cs_RDRs = [ mkVarUnqual (mkFastString ("c"++show i)) | i <- [(1::Int) .. ] ]
+
+a_Expr = nlHsVar a_RDR
+b_Expr = nlHsVar b_RDR
+c_Expr = nlHsVar c_RDR
+ltTag_Expr = nlHsVar ltTag_RDR
+eqTag_Expr = nlHsVar eqTag_RDR
+gtTag_Expr = nlHsVar gtTag_RDR
+false_Expr = nlHsVar false_RDR
+true_Expr = nlHsVar true_RDR
+
+a_Pat = nlVarPat a_RDR
+b_Pat = nlVarPat b_RDR
+c_Pat = nlVarPat c_RDR
+d_Pat = nlVarPat d_RDR
+k_Pat = nlVarPat k_RDR
+z_Pat = nlVarPat z_RDR
+
+con2tag_RDR, tag2con_RDR, maxtag_RDR :: TyCon -> RdrName
+-- Generates Orig s RdrName, for the binding positions
+con2tag_RDR tycon = mk_tc_deriv_name tycon "con2tag_"
+tag2con_RDR tycon = mk_tc_deriv_name tycon "tag2con_"
+maxtag_RDR tycon = mk_tc_deriv_name tycon "maxtag_"
+
+mk_tc_deriv_name tycon str
+ = mkDerivedRdrName tc_name mk_occ
+ where
+ tc_name = tyConName tycon
+ mk_occ tc_occ = mkVarOccFS (mkFastString new_str)
+ where
+ new_str = str ++ occNameString tc_occ ++ "#"
\end{code}
-RdrNames for PrimOps. Can't be done in PrelNames, because PrimOp imports
+s RdrName for PrimOps. Can't be done in PrelNames, because PrimOp imports
PrelNames, so PrelNames can't import PrimOp.
\begin{code}
-minusInt_RDR = nameRdrName minusIntName
-eqInt_RDR = nameRdrName eqIntName
-ltInt_RDR = nameRdrName ltIntName
-geInt_RDR = nameRdrName geIntName
-leInt_RDR = nameRdrName leIntName
-eqChar_RDR = nameRdrName eqCharName
-eqWord_RDR = nameRdrName eqWordName
-eqAddr_RDR = nameRdrName eqAddrName
-eqFloat_RDR = nameRdrName eqFloatName
-eqDouble_RDR = nameRdrName eqDoubleName
-ltChar_RDR = nameRdrName ltCharName
-ltWord_RDR = nameRdrName ltWordName
-ltAddr_RDR = nameRdrName ltAddrName
-ltFloat_RDR = nameRdrName ltFloatName
-ltDouble_RDR = nameRdrName ltDoubleName
-tagToEnum_RDR = nameRdrName tagToEnumName
+primOpRdrName op = getRdrName (primOpId op)
+
+minusInt_RDR = primOpRdrName IntSubOp
+eqInt_RDR = primOpRdrName IntEqOp
+ltInt_RDR = primOpRdrName IntLtOp
+geInt_RDR = primOpRdrName IntGeOp
+leInt_RDR = primOpRdrName IntLeOp
+tagToEnum_RDR = primOpRdrName TagToEnumOp
+
+error_RDR = getRdrName eRROR_ID
\end{code}
projects / ghc-hetmet.git / blobdiff