-%
+
% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
%
\section[Id]{@Ids@: Value and constructor identifiers}
\begin{code}
-#include "HsVersions.h"
-
module Id (
-- TYPES
GenId(..), -- *naughtily* used in some places (e.g., TcHsSyn)
- SYN_IE(Id), IdDetails,
+ Id, IdDetails,
StrictnessMark(..),
- SYN_IE(ConTag), fIRST_TAG,
- SYN_IE(DataCon), SYN_IE(DictFun), SYN_IE(DictVar),
+ ConTag, fIRST_TAG,
+ DataCon, DictFun, DictVar,
-- CONSTRUCTION
mkDataCon,
mkImported,
mkMethodSelId,
mkRecordSelId,
- mkSameSpecCon,
mkSuperDictSelId,
mkSysLocal,
mkTemplateLocals,
addInlinePragma, nukeNoInlinePragma, addNoInlinePragma,
-- IdEnvs AND IdSets
- SYN_IE(IdEnv), SYN_IE(GenIdSet), SYN_IE(IdSet),
+ IdEnv, GenIdSet, IdSet,
addOneToIdEnv,
addOneToIdSet,
combineIdEnvs,
unitIdSet
) where
-IMP_Ubiq()
+#include "HsVersions.h"
-#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ <= 201
-IMPORT_DELOOPER(IdLoop) -- for paranoia checking
-IMPORT_DELOOPER(TyLoop) -- for paranoia checking
-#else
-import {-# SOURCE #-} SpecEnv ( SpecEnv )
import {-# SOURCE #-} CoreUnfold ( Unfolding )
import {-# SOURCE #-} StdIdInfo ( addStandardIdInfo )
--- Let's see how much we can leave out..
---import {-# SOURCE #-} TysPrim
-#endif
+import CmdLineOpts ( opt_PprStyle_All )
+import SpecEnv ( SpecEnv )
import Bag
-import Class ( SYN_IE(Class), GenClass )
-import BasicTypes ( SYN_IE(Arity) )
+import Class ( Class )
+import BasicTypes ( Arity )
import IdInfo
import Maybes ( maybeToBool )
import Name ( nameUnique, mkLocalName, mkSysLocalName, isLocalName,
- mkCompoundName, mkInstDeclName,
+ mkCompoundName,
isLocallyDefinedName, occNameString, modAndOcc,
isLocallyDefined, changeUnique, isWiredInName,
nameString, getOccString, setNameVisibility,
isExported, ExportFlag(..), Provenance,
- OccName(..), Name, SYN_IE(Module),
+ OccName(..), Name, Module,
NamedThing(..)
)
+import PrimOp ( PrimOp )
import PrelMods ( pREL_TUP, pREL_BASE )
import Lex ( mkTupNameStr )
import FieldLabel ( fieldLabelName, FieldLabel(..){-instances-} )
import PragmaInfo ( PragmaInfo(..) )
-#if __GLASGOW_HASKELL__ >= 202
-import PrimOp ( PrimOp )
-#endif
-import PprType ( getTypeString, specMaybeTysSuffix,
- GenType, GenTyVar
- )
-import Pretty
-import MatchEnv ( MatchEnv )
import SrcLoc ( mkBuiltinSrcLoc )
import TysWiredIn ( tupleTyCon )
import TyCon ( TyCon, tyConDataCons, isDataTyCon, isNewTyCon, mkSpecTyCon )
-import Type ( mkSigmaTy, mkTyVarTys, mkFunTys, mkDictTy, splitSigmaTy,
- applyTyCon, instantiateTy, mkForAllTys,
- tyVarsOfType, applyTypeEnvToTy, typePrimRep,
- specialiseTy, instantiateTauTy,
- GenType, SYN_IE(ThetaType), SYN_IE(TauType), SYN_IE(Type)
+import Type ( mkSigmaTy, mkTyVarTys, mkFunTys, splitSigmaTy,
+ mkTyConApp, instantiateTy, mkForAllTys,
+ tyVarsOfType, instantiateTy, typePrimRep,
+ instantiateTauTy,
+ GenType, ThetaType, TauType, Type
+ )
+import TyVar ( TyVar, alphaTyVars, isEmptyTyVarSet,
+ TyVarEnv, zipTyVarEnv, mkTyVarEnv
)
-import TyVar ( SYN_IE(TyVar), GenTyVar, alphaTyVars, isEmptyTyVarSet, SYN_IE(TyVarEnv) )
-import Usage ( SYN_IE(UVar) )
import UniqFM
import UniqSet -- practically all of it
-import Unique ( getBuiltinUniques, pprUnique,
- incrUnique,
- Unique{-instance Ord3-},
- Uniquable(..)
- )
-import Outputable ( ifPprDebug, Outputable(..), PprStyle(..) )
+import Unique ( getBuiltinUniques, pprUnique, Unique, Uniquable(..) )
+import Outputable
import SrcLoc ( SrcLoc )
-import Util ( Ord3(..), mapAccumL, nOfThem, zipEqual, assoc,
- panic, panic#, pprPanic, assertPanic
- )
+import Util ( mapAccumL, nOfThem, zipEqual, assoc )
+import GlaExts ( Int# )
\end{code}
Here are the @Id@ and @IdDetails@ datatypes; also see the notes that
[FieldLabel] -- Field labels for this constructor;
--length = 0 (not a record) or arity
- [TyVar] [(Class,Type)] -- Type vars and context for the data type decl
- [TyVar] [(Class,Type)] -- Ditto for the context of the constructor,
+ [TyVar] ThetaType -- Type vars and context for the data type decl
+ [TyVar] ThetaType -- Ditto for the context of the constructor,
-- the existentially quantified stuff
[Type] TyCon -- Args and result tycon
-- the type is:
-- see below
| DictFunId Class -- A DictFun is uniquely identified
- Type -- by its class and type; this type has free type vars,
+ [Type] -- by its class and type; this type has free type vars,
-- whose identity is irrelevant. Eg Class = Eq
-- Type = Tree a
-- The "a" is irrelevant. As it is too painful to
applyTypeEnvToId :: TypeEnv -> Id -> Id
applyTypeEnvToId type_env id@(Id _ _ ty _ _ _)
= apply_to_Id ( \ ty ->
- applyTypeEnvToTy type_env ty
+ instantiateTy type_env ty
) id
\end{code}
mkDefaultMethodId dm_name rec_c ty
= Id (uniqueOf dm_name) dm_name ty (DefaultMethodId rec_c) NoPragmaInfo noIdInfo
-mkDictFunId dfun_name full_ty clas ity
+mkDictFunId dfun_name full_ty clas itys
= Id (nameUnique dfun_name) dfun_name full_ty details NoPragmaInfo noIdInfo
where
- details = DictFunId clas ity
+ details = DictFunId clas itys
mkWorkerId u unwrkr ty info
= Id u name ty details NoPragmaInfo info
\end{code}
\begin{code}
-
-type MyTy a b = GenType (GenTyVar a) b
-type MyId a b = GenId (MyTy a b)
-
no_free_tvs ty = isEmptyTyVarSet (tyVarsOfType ty)
-- SysLocal: for an Id being created by the compiler out of thin air...
-- UserLocal: an Id with a name the user might recognize...
-mkSysLocal :: FAST_STRING -> Unique -> MyTy a b -> SrcLoc -> MyId a b
-mkUserLocal :: OccName -> Unique -> MyTy a b -> SrcLoc -> MyId a b
+mkSysLocal :: FAST_STRING -> Unique -> GenType flexi -> SrcLoc -> GenId (GenType flexi)
+mkUserLocal :: OccName -> Unique -> GenType flexi -> SrcLoc -> GenId (GenType flexi)
mkSysLocal str uniq ty loc
= Id uniq (mkSysLocalName uniq str loc) ty (SysLocalId (no_free_tvs ty)) NoPragmaInfo noIdInfo
mkUserLocal occ uniq ty loc
= Id uniq (mkLocalName uniq occ loc) ty (LocalId (no_free_tvs ty)) NoPragmaInfo noIdInfo
-mkUserId :: Name -> MyTy a b -> PragmaInfo -> MyId a b
+mkUserId :: Name -> GenType flexi -> PragmaInfo -> GenId (GenType flexi)
mkUserId name ty pragma_info
= Id (nameUnique name) name ty (LocalId (no_free_tvs ty)) pragma_info noIdInfo
\end{code}
mkIdWithNewType (Id u name _ details pragma info) ty
= Id u name ty details pragma info
+{-
-- Specialised version of constructor: only used in STG and code generation
-- Note: The specialsied Id has the same unique as the unspeced Id
new_ty = specialiseTy ty ty_maybes 0
-- pprTrace "SameSpecCon:Unique:"
- -- (ppSep (ppr PprDebug unspec: [pprMaybeTy PprDebug ty | ty <- ty_maybes]))
+ -- (ppSep (ppr unspec: [pprMaybeTy ty | ty <- ty_maybes]))
+-}
\end{code}
Make some local @Ids@ for a template @CoreExpr@. These have bogus
data_con_ty
= mkSigmaTy (tvs++con_tvs) (ctxt++con_ctxt)
- (mkFunTys args_tys (applyTyCon tycon (mkTyVarTys tvs)))
+ (mkFunTys args_tys (mkTyConApp tycon (mkTyVarTys tvs)))
mkTupleCon :: Arity -> Name -> Type -> Id
\begin{code}
dataConNumFields id
- = ASSERT(isDataCon id)
+ = ASSERT( if (isDataCon id) then True else
+ pprTrace "dataConNumFields" (ppr id) False )
case (dataConSig id) of { (_, _, _, con_theta, arg_tys, _) ->
length con_theta + length arg_tys }
where
tyvars = take arity alphaTyVars
tyvar_tys = mkTyVarTys tyvars
+
dataConSig (Id _ _ _ (SpecId unspec ty_maybes _) _ _)
= (spec_tyvars, spec_theta_ty, spec_con_tyvars, spec_con_theta, spec_arg_tys, spec_tycon)
where
ty_env = tyvars `zip` ty_maybes
- spec_tyvars = foldr nothing_tyvars [] ty_env
- spec_con_tyvars = foldr nothing_tyvars [] (con_tyvars `zip` ty_maybes) -- Hmm..
+ spec_tyvars = [tyvar | (tyvar, Nothing) <- ty_env]
+ spec_con_tyvars = [tyvar | (tyvar, Nothing) <- con_tyvars `zip` ty_maybes] -- Hmm..
- nothing_tyvars (tyvar, Nothing) l = tyvar : l
- nothing_tyvars (tyvar, Just ty) l = l
-
- spec_env = foldr just_env [] ty_env
- just_env (tyvar, Nothing) l = l
- just_env (tyvar, Just ty) l = (tyvar, ty) : l
+ spec_env = mkTyVarEnv [(tyvar, ty) | (tyvar, Just ty) <- ty_env]
spec_arg_tys = map (instantiateTauTy spec_env) arg_tys
spec_theta_ty = if null theta_ty then []
-- dataConRepType returns the type of the representation of a contructor
-- This may differ from the type of the contructor Id itself for two reasons:
-- a) the constructor Id may be overloaded, but the dictionary isn't stored
+-- e.g. data Eq a => T a = MkT a a
+--
-- b) the constructor may store an unboxed version of a strict field.
+--
-- Here's an example illustrating both:
-- data Ord a => T a = MkT Int! a
-- Here
-- Trep :: Int# -> a -> T a
-- Actually, the unboxed part isn't implemented yet!
-dataConRepType :: GenId (GenType tv u) -> GenType tv u
-dataConRepType con
- = mkForAllTys tyvars tau
- where
- (tyvars, theta, tau) = splitSigmaTy (idType con)
+dataConRepType :: Id -> Type
+dataConRepType (Id _ _ _ (AlgConId _ _ _ tyvars theta con_tyvars con_theta arg_tys tycon) _ _)
+ = mkForAllTys (tyvars++con_tyvars)
+ (mkFunTys arg_tys (mkTyConApp tycon (mkTyVarTys tyvars)))
+dataConRepType other_id
+ = ASSERT( isDataCon other_id )
+ idType other_id
dataConFieldLabels :: DataCon -> [FieldLabel]
dataConFieldLabels (Id _ _ _ (AlgConId _ _ fields _ _ _ _ _ _) _ _) = fields
= map (instantiateTy tenv) arg_tys
where
(tyvars, _, _, _, arg_tys, _) = dataConSig con_id
- tenv = zipEqual "dataConArgTys" tyvars inst_tys
+ tenv = zipTyVarEnv tyvars inst_tys
\end{code}
\begin{code}
\end{code}
\begin{code}
-getIdSpecialisation :: Id -> SpecEnv
+getIdSpecialisation :: Id -> IdSpecEnv
getIdSpecialisation (Id _ _ _ _ _ info) = specInfo info
-addIdSpecialisation :: Id -> SpecEnv -> Id
+addIdSpecialisation :: Id -> IdSpecEnv -> Id
addIdSpecialisation (Id u n ty details prags info) spec_info
= Id u n ty details prags (info `addSpecInfo` spec_info)
\end{code}
Comparison: equality and ordering---this stuff gets {\em hammered}.
\begin{code}
-cmpId (Id u1 _ _ _ _ _) (Id u2 _ _ _ _ _) = cmp u1 u2
+cmpId (Id u1 _ _ _ _ _) (Id u2 _ _ _ _ _) = compare u1 u2
-- short and very sweet
\end{code}
\begin{code}
-instance Ord3 (GenId ty) where
- cmp = cmpId
-
instance Eq (GenId ty) where
- a == b = case (a `cmp` b) of { EQ_ -> True; _ -> False }
- a /= b = case (a `cmp` b) of { EQ_ -> False; _ -> True }
+ a == b = case (a `compare` b) of { EQ -> True; _ -> False }
+ a /= b = case (a `compare` b) of { EQ -> False; _ -> True }
instance Ord (GenId ty) where
- a <= b = case (a `cmp` b) of { LT_ -> True; EQ_ -> True; GT__ -> False }
- a < b = case (a `cmp` b) of { LT_ -> True; EQ_ -> False; GT__ -> False }
- a >= b = case (a `cmp` b) of { LT_ -> False; EQ_ -> True; GT__ -> True }
- a > b = case (a `cmp` b) of { LT_ -> False; EQ_ -> False; GT__ -> True }
- _tagCmp a b = case (a `cmp` b) of { LT_ -> _LT; EQ_ -> _EQ; GT__ -> _GT }
+ a <= b = case (a `compare` b) of { LT -> True; EQ -> True; GT -> False }
+ a < b = case (a `compare` b) of { LT -> True; EQ -> False; GT -> False }
+ a >= b = case (a `compare` b) of { LT -> False; EQ -> True; GT -> True }
+ a > b = case (a `compare` b) of { LT -> False; EQ -> False; GT -> True }
+ compare a b = cmpId a b
\end{code}
@cmpId_withSpecDataCon@ ensures that any spectys are taken into
unspecialised counterpart.
\begin{code}
-cmpId_withSpecDataCon :: Id -> Id -> TAG_
+cmpId_withSpecDataCon :: Id -> Id -> Ordering
cmpId_withSpecDataCon id1 id2
| eq_ids && isDataCon id1 && isDataCon id2
= cmp_ids
where
cmp_ids = cmpId id1 id2
- eq_ids = case cmp_ids of { EQ_ -> True; other -> False }
+ eq_ids = case cmp_ids of { EQ -> True; other -> False }
cmpEqDataCon (Id _ _ _ (SpecId _ mtys1 _) _ _) (Id _ _ _ (SpecId _ mtys2 _) _ _)
- = panic# "Id.cmpEqDataCon:cmpUniTypeMaybeList mtys1 mtys2"
+ = panic "Id.cmpEqDataCon:cmpUniTypeMaybeList mtys1 mtys2"
-cmpEqDataCon _ (Id _ _ _ (SpecId _ _ _) _ _) = LT_
-cmpEqDataCon (Id _ _ _ (SpecId _ _ _) _ _) _ = GT_
-cmpEqDataCon _ _ = EQ_
+cmpEqDataCon _ (Id _ _ _ (SpecId _ _ _) _ _) = LT
+cmpEqDataCon (Id _ _ _ (SpecId _ _ _) _ _) _ = GT
+cmpEqDataCon _ _ = EQ
\end{code}
%************************************************************************
\begin{code}
instance Outputable ty => Outputable (GenId ty) where
- ppr sty id = pprId sty id
-
--- and a SPECIALIZEd one:
-instance Outputable {-Id, i.e.:-}(GenId Type) where
- ppr sty id = pprId sty id
+ ppr id = pprId id
-showId :: PprStyle -> Id -> String
-showId sty id = show (pprId sty id)
+showId :: Id -> String
+showId id = showSDoc (pprId id)
\end{code}
Default printing code (not used for interfaces):
\begin{code}
-pprId :: Outputable ty => PprStyle -> GenId ty -> Doc
+pprId :: Outputable ty => GenId ty -> SDoc
-pprId sty (Id u n _ _ prags _)
- = hcat [ppr sty n, pp_prags]
+pprId (Id u n _ _ prags _)
+ = hcat [ppr n, pp_prags]
where
- pp_prags = ifPprDebug sty (case prags of
- IMustNotBeINLINEd -> text "{n}"
- IWantToBeINLINEd -> text "{i}"
- IMustBeINLINEd -> text "{I}"
- other -> empty)
+ pp_prags | opt_PprStyle_All = case prags of
+ IMustNotBeINLINEd -> text "{n}"
+ IWantToBeINLINEd -> text "{i}"
+ IMustBeINLINEd -> text "{I}"
+ other -> empty
+ | otherwise = empty
-- WDP 96/05/06: We can re-elaborate this as we go along...
\end{code}
projects / ghc-hetmet.git / blobdiff