\begin{code}
-#include "HsVersions.h"
-
module TcEnv(
- TcEnv,
+ TcIdOcc(..), TcIdBndr, TcIdSet, tcIdType, tcIdTyVars, tcInstId,
+ tcLookupDataCon,
+
+ TcEnv, GlobalValueEnv,
- initEnv, getEnv_LocalIds, getEnv_TyCons, getEnv_Classes,
+ initEnv, getEnv_TyCons, getEnv_Classes,
- tcTyVarScope, tcTyVarScopeGivenKinds, tcLookupTyVar,
+ tcExtendTyVarEnv, tcLookupTyVar, tcLookupTyVarBndrs,
tcExtendTyConEnv, tcLookupTyCon, tcLookupTyConByKey,
tcExtendClassEnv, tcLookupClass, tcLookupClassByKey,
+ tcGetTyConsAndClasses,
- tcExtendGlobalValEnv, tcExtendLocalValEnv,
+ tcExtendGlobalValEnv, tcExtendLocalValEnv, tcExtendEnvWithPat,
+ tcGetGlobalValEnv, tcSetGlobalValEnv, lookupGlobalByKey,
tcLookupLocalValue, tcLookupLocalValueOK, tcLookupLocalValueByKey,
- tcLookupGlobalValue, tcLookupGlobalValueByKey,
+ tcLookupGlobalValue, tcLookupGlobalValueByKey, tcLookupGlobalValueMaybe,
+ tcAddImportedIdInfo, tcExplicitLookupGlobal,
+ tcLookupGlobalValueByKeyMaybe,
- newMonoIds, newLocalIds, newLocalId,
- tcGetGlobalTyVars
- ) where
+ newLocalIds, newLocalId, newSpecPragmaId,
+ tcGetGlobalTyVars, tcExtendGlobalTyVars,
+
+ tidyType, tidyTypes, tidyTyVar,
+ badCon, badPrimOp
+ ) where
-import Ubiq
-import TcMLoop -- for paranoia checking
+#include "HsVersions.h"
-import Id ( Id(..), GenId, idType, mkUserLocal )
-import TcHsSyn ( TcIdBndr(..), TcIdOcc(..) )
-import TcKind ( TcKind, newKindVars, tcDefaultKind, kindToTcKind )
-import TcType ( TcType(..), TcMaybe, TcTyVar(..), TcTyVarSet(..),
- newTyVarTys, tcInstTyVars, tcInstType, zonkTcTyVars
+import HsTypes ( getTyVarName )
+import Id ( mkUserLocal, isDataConId_maybe )
+import MkId ( mkSpecPragmaId )
+import Var ( TyVar, Id, GenId, setVarName,
+ idType, setIdInfo, idInfo
+ )
+import TcType ( TcType, TcTyVar, TcTyVarSet, TcThetaType, TcBox,
+ tcInstTyVars, zonkTcTyVars,
+ TcKind, kindToTcKind
+ )
+import VarEnv
+import VarSet
+import Type ( Kind,
+ tyVarsOfType, tyVarsOfTypes, mkTyVarTy, substTy,
+ splitForAllTys, splitRhoTy, splitFunTys, substFlexiTy,
+ splitAlgTyConApp_maybe, getTyVar
)
-import TyVar ( mkTyVar, tyVarKind, unionTyVarSets, emptyTyVarSet )
-import Type ( tyVarsOfTypes )
-import TyCon ( TyCon, Arity(..), tyConKind, synTyConArity )
-import Class ( Class(..), GenClass, getClassSig )
+import DataCon ( DataCon )
+import TyCon ( TyCon, tyConKind, tyConArity, isSynTyCon )
+import Class ( Class )
import TcMonad
-import Name ( getOccName, getSrcLoc, Name{-instance NamedThing-} )
-import PprStyle
-import Pretty
-import RnHsSyn ( RnName(..) )
-import Type ( splitForAllTy )
-import Unique ( pprUnique10, pprUnique{-ToDo:rm-} )
-import UniqFM
-import Util ( zipWithEqual, zipWith3Equal, zipLazy, panic, pprPanic, pprTrace{-ToDo:rm-} )
+import BasicTypes ( Arity )
+import IdInfo ( noIdInfo )
+import Name ( Name, OccName(..), nameOccName, occNameString, mkLocalName,
+ maybeWiredInTyConName, maybeWiredInIdName, isLocallyDefined,
+ isSysLocalName,
+ NamedThing(..)
+ )
+import Unique ( pprUnique10, Unique, Uniquable(..) )
+import FiniteMap ( lookupFM, addToFM )
+import UniqFM
+import Unique ( Uniquable(..) )
+import Util ( zipEqual, zipWith3Equal, mapAccumL )
+import Bag ( bagToList )
+import Maybes ( maybeToBool )
+import Outputable
\end{code}
+%************************************************************************
+%* *
+\subsection{TcId, TcIdOcc}
+%* *
+%************************************************************************
+
+
+\begin{code}
+type TcIdBndr s = GenId (TcBox s) -- Binders are all TcTypes
+data TcIdOcc s = TcId (TcIdBndr s) -- Bindees may be either
+ | RealId Id
+
+type TcIdSet s = GenIdSet (TcBox s)
+
+instance Eq (TcIdOcc s) where
+ (TcId id1) == (TcId id2) = id1 == id2
+ (RealId id1) == (RealId id2) = id1 == id2
+ _ == _ = False
+
+instance Ord (TcIdOcc s) where
+ (TcId id1) `compare` (TcId id2) = id1 `compare` id2
+ (RealId id1) `compare` (RealId id2) = id1 `compare` id2
+ (TcId _) `compare` (RealId _) = LT
+ (RealId _) `compare` (TcId _) = GT
+
+instance Outputable (TcIdOcc s) where
+ ppr (TcId id) = ppr id
+ ppr (RealId id) = ppr id
+
+instance NamedThing (TcIdOcc s) where
+ getName (TcId id) = getName id
+ getName (RealId id) = getName id
+
+
+tcIdType :: TcIdOcc s -> TcType s
+tcIdType (TcId id) = idType id
+tcIdType (RealId id) = pprPanic "tcIdType:" (ppr id)
+
+tcIdTyVars (TcId id) = tyVarsOfType (idType id)
+tcIdTyVars (RealId _) = emptyVarSet -- Top level Ids have no free type variables
+
+
+tcLookupDataCon :: Name -> TcM s (DataCon, [TcType s], TcType s)
+tcLookupDataCon con_name
+ = tcLookupGlobalValue con_name `thenNF_Tc` \ con_id ->
+ case isDataConId_maybe con_id of {
+ Nothing -> failWithTc (badCon con_id);
+ Just data_con ->
+
+ tcInstId con_id `thenNF_Tc` \ (_, _, con_tau) ->
+ -- Ignore the con_theta; overloaded constructors only
+ -- behave differently when called, not when used for
+ -- matching.
+ let
+ (arg_tys, result_ty) = splitFunTys con_tau
+ in
+ ASSERT( maybeToBool (splitAlgTyConApp_maybe result_ty) )
+ returnTc (data_con, arg_tys, result_ty) }
+
+-- A useful function that takes an occurrence of a global thing
+-- and instantiates its type with fresh type variables
+tcInstId :: Id
+ -> NF_TcM s ([TcTyVar s], -- It's instantiated type
+ TcThetaType s, --
+ TcType s) --
+
+tcInstId id
+ = let
+ (tyvars, rho) = splitForAllTys (idType id)
+ in
+ tcInstTyVars tyvars `thenNF_Tc` \ (tyvars', arg_tys, tenv) ->
+ let
+ rho' = substFlexiTy tenv rho
+ (theta', tau') = splitRhoTy rho'
+ in
+ returnNF_Tc (tyvars', theta', tau')
+\end{code}
+
+tidyTy tidies up a type for printing in an error message.
+
+\begin{code}
+tidyType :: TidyTypeEnv s -> TcType s -> (TidyTypeEnv s, TcType s)
+tidyType env ty
+ = (env', substTy subst' ty)
+ where
+ env'@(_, subst') = foldl go env (varSetElems (tyVarsOfType ty))
+ go env tyvar = fst (tidyTyVar env tyvar)
+
+tidyTypes :: TidyTypeEnv s -> [TcType s] -> (TidyTypeEnv s, [TcType s])
+tidyTypes env tys = mapAccumL tidyType env tys
+
+tidyTyVar :: TidyTypeEnv s -> TcTyVar s -> (TidyTypeEnv s, TcTyVar s)
+tidyTyVar (supply,subst) tyvar
+ = case lookupVarEnv subst tyvar of
+ Just ty -> -- Already substituted
+ ((supply,subst), getTyVar "tidyTyVar" ty)
+ Nothing -> -- Make a new nice name for it
+ ((addToFM supply str next,
+ extendVarEnv subst tyvar (mkTyVarTy new_tyvar)),
+ new_tyvar)
+ where
+ tyvar_name = getName tyvar
+ is_sys = isSysLocalName tyvar_name
+
+ str | is_sys = SLIT("$")
+ | otherwise = occNameString (nameOccName tyvar_name)
+
+ next = case lookupFM supply str of
+ Nothing -> 0
+ Just n -> n+1
+
+ new_tyvar = mkNewTv str is_sys next tyvar
+
+mkNewTv :: FastString -> Bool -> Int -> TcTyVar s -> TcTyVar s
+mkNewTv str False 0 tv = tv -- Leave first non-sys thing alone
+mkNewTv str is_sys n tv = setVarName tv (mkLocalName (getUnique tv)
+ (TvOcc (_PK_ ((_UNPK_ str) ++ show n))))
+\end{code}
+
+
+%************************************************************************
+%* *
+\subsection{TcEnv}
+%* *
+%************************************************************************
+
Data type declarations
~~~~~~~~~~~~~~~~~~~~~
\begin{code}
data TcEnv s = TcEnv
- (TyVarEnv s)
+ (TcTyVarEnv s)
(TyConEnv s)
(ClassEnv s)
- (ValueEnv Id) -- Globals
+ GlobalValueEnv
(ValueEnv (TcIdBndr s)) -- Locals
- (MutableVar s (TcTyVarSet s)) -- Free type variables of locals
+ (TcRef s (TcTyVarSet s)) -- Free type variables of locals
-- ...why mutable? see notes with tcGetGlobalTyVars
-type TyVarEnv s = UniqFM (TcKind s, TyVar)
-type TyConEnv s = UniqFM (TcKind s, Maybe Arity, TyCon) -- Arity present for Synonyms only
-type ClassEnv s = UniqFM (TcKind s, Class)
+type TcTyVarEnv s = UniqFM (TcKind s, TyVar)
+type TyConEnv s = UniqFM (TcKind s, Maybe Arity, TyCon) -- Arity present for Synonyms only
+type ClassEnv s = UniqFM ([TcKind s], Class) -- The kinds are the kinds of the args
+ -- to the class
type ValueEnv id = UniqFM id
+type GlobalValueEnv = ValueEnv Id -- Globals
-initEnv :: MutableVar s (TcTyVarSet s) -> TcEnv s
+initEnv :: TcRef s (TcTyVarSet s) -> TcEnv s
initEnv mut = TcEnv emptyUFM emptyUFM emptyUFM emptyUFM emptyUFM mut
-getEnv_LocalIds (TcEnv _ _ _ _ ls _) = eltsUFM ls
getEnv_TyCons (TcEnv _ ts _ _ _ _) = [tycon | (_, _, tycon) <- eltsUFM ts]
getEnv_Classes (TcEnv _ _ cs _ _ _) = [clas | (_, clas) <- eltsUFM cs]
\end{code}
-Making new TcTyVars, with knot tying!
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Type variable env
+~~~~~~~~~~~~~~~~~
\begin{code}
-tcTyVarScopeGivenKinds
- :: [Name] -- Names of some type variables
- -> [TcKind s]
- -> ([TyVar] -> TcM s a) -- Thing to type check in their scope
- -> TcM s a -- Result
-
-tcTyVarScopeGivenKinds names kinds thing_inside
- = fixTc (\ ~(rec_tyvars, _) ->
- -- Ok to look at names, kinds, but not tyvars!
-
- tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
- let
- tve' = addListToUFM tve (names `zip` (kinds `zipLazy` rec_tyvars))
- in
- tcSetEnv (TcEnv tve' tce ce gve lve gtvs)
- (thing_inside rec_tyvars) `thenTc` \ result ->
-
- -- Get the tyvar's Kinds from their TcKinds
- mapNF_Tc tcDefaultKind kinds `thenNF_Tc` \ kinds' ->
-
- -- Construct the real TyVars
- let
- tyvars = zipWithEqual mk_tyvar names kinds'
- mk_tyvar name kind = mkTyVar name (uniqueOf name) kind
- in
- returnTc (tyvars, result)
- ) `thenTc` \ (_,result) ->
- returnTc result
-
-tcTyVarScope names thing_inside
- = newKindVars (length names) `thenNF_Tc` \ kinds ->
- tcTyVarScopeGivenKinds names kinds thing_inside
+tcExtendTyVarEnv :: [Name] -> [(TcKind s, TyVar)] -> TcM s r -> TcM s r
+tcExtendTyVarEnv names kinds_w_types scope
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ let
+ tve' = addListToUFM tve (zipEqual "tcTyVarScope" names kinds_w_types)
+ in
+ tcSetEnv (TcEnv tve' tce ce gve lve gtvs) scope
\end{code}
-
The Kind, TyVar, Class and TyCon envs
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Extending the environments. Notice the uses of @zipLazy@, which makes sure
-that the knot-tied TyVars, TyCons and Classes aren't looked at too early.
+Extending the environments.
\begin{code}
-tcExtendTyConEnv :: [(RnName,Maybe Arity)] -> [TyCon] -> TcM s r -> TcM s r
+tcExtendTyConEnv :: [(Name, (TcKind s, Maybe Arity, TyCon))] -> TcM s r -> TcM s r
-tcExtendTyConEnv names_w_arities tycons scope
- = newKindVars (length names_w_arities) `thenNF_Tc` \ kinds ->
- tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+tcExtendTyConEnv bindings scope
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
let
- tce' = addListToUFM tce [ (name, (kind, arity, tycon))
- | ((name,arity), (kind,tycon)) <- names_w_arities `zip`
- (kinds `zipLazy` tycons)
- ]
+ tce' = addListToUFM tce bindings
in
- tcSetEnv (TcEnv tve tce' ce gve lve gtvs) scope `thenTc` \ result ->
- mapNF_Tc tcDefaultKind kinds `thenNF_Tc_`
- returnTc result
+ tcSetEnv (TcEnv tve tce' ce gve lve gtvs) scope
-tcExtendClassEnv :: [RnName] -> [Class] -> TcM s r -> TcM s r
-tcExtendClassEnv names classes scope
- = newKindVars (length names) `thenNF_Tc` \ kinds ->
- tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+tcExtendClassEnv :: [(Name, ([TcKind s], Class))] -> TcM s r -> TcM s r
+tcExtendClassEnv bindings scope
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
let
- ce' = addListToUFM ce (names `zip` (kinds `zipLazy` classes))
+ ce' = addListToUFM ce bindings
in
- tcSetEnv (TcEnv tve tce ce' gve lve gtvs) scope `thenTc` \ result ->
- mapNF_Tc tcDefaultKind kinds `thenNF_Tc_`
- returnTc result
+ tcSetEnv (TcEnv tve tce ce' gve lve gtvs) scope
\end{code}
Looking up in the environments.
\begin{code}
+tcLookupTyVarBndrs tyvar_bndrs -- [HsTyVar name]
+ = mapAndUnzipNF_Tc (tcLookupTyVar . getTyVarName) tyvar_bndrs
+
tcLookupTyVar name
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
- returnNF_Tc (lookupWithDefaultUFM tve (pprPanic "tcLookupTyVar:" (ppr PprShowAll name)) name)
-
+ returnNF_Tc (lookupWithDefaultUFM tve (pprPanic "tcLookupTyVar:" (ppr name)) name)
-tcLookupTyCon (WiredInTyCon tc) -- wired in tycons
- = returnNF_Tc (kindToTcKind (tyConKind tc), synTyConArity tc, tc)
tcLookupTyCon name
- = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
- returnNF_Tc (lookupWithDefaultUFM tce (pprPanic "tcLookupTyCon:" (ppr PprShowAll name)) name)
+ = -- Try for a wired-in tycon
+ case maybeWiredInTyConName name of {
+ Just tc | isSynTyCon tc -> returnTc (kind, Just (tyConArity tc), tc)
+ | otherwise -> returnTc (kind, Nothing, tc)
+ where {
+ kind = kindToTcKind (tyConKind tc)
+ };
+
+ Nothing ->
+
+ -- Try in the environment
+ tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ case lookupUFM tce name of {
+ Just stuff -> returnTc stuff;
+
+ Nothing ->
+
+ -- Could be that he's using a class name as a type constructor
+ case lookupUFM ce name of
+ Just _ -> failWithTc (classAsTyConErr name)
+ Nothing -> pprPanic "tcLookupTyCon:" (ppr name)
+ } }
tcLookupTyConByKey uniq
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
let
(kind, arity, tycon) = lookupWithDefaultUFM_Directly tce
- (pprPanic "tcLookupTyCon:" (pprUnique10 uniq))
+ (pprPanic "tcLookupTyConByKey:" (pprUnique10 uniq))
uniq
in
returnNF_Tc tycon
tcLookupClass name
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
--- pprTrace "tcLookupClass:" (ppCat [ppStr "Uniq:", pprUnique10 (uniqueOf name), ppStr "; avail:", ppCat (map (pprUnique10 . fst) (ufmToList ce))]) $
--- pprTrace "tcLookupClass:" (ppCat [ppStr "Uniq:", pprUnique (uniqueOf name), ppStr "; avail:", ppCat (map (pprUnique . fst) (ufmToList ce))]) $
- returnNF_Tc (lookupWithDefaultUFM ce (pprPanic "tcLookupClass:" (ppr PprShowAll name)) name)
+ case lookupUFM ce name of
+ Just stuff -- Common case: it's ok
+ -> returnTc stuff
+
+ Nothing -- Could be that he's using a type constructor as a class
+ | maybeToBool (maybeWiredInTyConName name)
+ || maybeToBool (lookupUFM tce name)
+ -> failWithTc (tyConAsClassErr name)
+
+ | otherwise -- Wierd! Renamer shouldn't let this happen
+ -> pprPanic "tcLookupClass" (ppr name)
tcLookupClassByKey uniq
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
uniq
in
returnNF_Tc clas
+
+tcGetTyConsAndClasses :: NF_TcM s ([TyCon], [Class])
+tcGetTyConsAndClasses
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ returnNF_Tc ([tc | (_, _, tc) <- eltsUFM tce],
+ [c | (_, c) <- eltsUFM ce])
\end{code}
tcExtendGlobalValEnv ids scope
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
let
- gve' = addListToUFM_Directly gve [(uniqueOf id, id) | id <- ids]
+ gve' = addListToUFM_Directly gve [(getUnique id, id) | id <- ids]
in
tcSetEnv (TcEnv tve tce ce gve' lve gtvs) scope
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
tcReadMutVar gtvs `thenNF_Tc` \ global_tvs ->
let
- lve' = addListToUFM lve (names `zip` ids)
+ lve' = addListToUFM lve (zipEqual "tcExtendLocalValEnv" names ids)
extra_global_tyvars = tyVarsOfTypes (map idType ids)
- new_global_tyvars = global_tvs `unionTyVarSets` extra_global_tyvars
+ new_global_tyvars = global_tvs `unionVarSet` extra_global_tyvars
+ in
+ tcNewMutVar new_global_tyvars `thenNF_Tc` \ gtvs' ->
+
+ tcSetEnv (TcEnv tve tce ce gve lve' gtvs') scope
+
+tcExtendEnvWithPat names_w_ids scope
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ tcReadMutVar gtvs `thenNF_Tc` \ global_tvs ->
+ let
+ names_w_ids_list = bagToList names_w_ids
+ lve' = addListToUFM lve names_w_ids_list
+ extra_global_tyvars = tyVarsOfTypes (map (idType . snd) names_w_ids_list)
+ new_global_tyvars = global_tvs `unionVarSet` extra_global_tyvars
in
tcNewMutVar new_global_tyvars `thenNF_Tc` \ gtvs' ->
\begin{code}
tcGetGlobalTyVars :: NF_TcM s (TcTyVarSet s)
tcGetGlobalTyVars
- = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
- tcReadMutVar gtvs `thenNF_Tc` \ global_tvs ->
- zonkTcTyVars global_tvs `thenNF_Tc` \ global_tvs' ->
- tcWriteMutVar gtvs global_tvs' `thenNF_Tc_`
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ tcReadMutVar gtvs `thenNF_Tc` \ global_tvs ->
+ zonkTcTyVars (varSetElems global_tvs) `thenNF_Tc` \ global_tys' ->
+ let
+ global_tvs' = (tyVarsOfTypes global_tys')
+ in
+ tcWriteMutVar gtvs global_tvs' `thenNF_Tc_`
returnNF_Tc global_tvs'
+
+tcExtendGlobalTyVars extra_global_tvs scope
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ tcReadMutVar gtvs `thenNF_Tc` \ global_tvs ->
+ let
+ new_global_tyvars = global_tvs `unionVarSet` extra_global_tvs
+ in
+ tcNewMutVar new_global_tyvars `thenNF_Tc` \ gtvs' ->
+ tcSetEnv (TcEnv tve tce ce gve lve gtvs') scope
\end{code}
\begin{code}
-tcLookupLocalValue :: RnName -> NF_TcM s (Maybe (TcIdBndr s))
+tcLookupLocalValue :: Name -> NF_TcM s (Maybe (TcIdBndr s))
tcLookupLocalValue name
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
returnNF_Tc (lookupUFM lve name)
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
returnNF_Tc (lookupUFM_Directly lve uniq)
-tcLookupLocalValueOK :: String -> RnName -> NF_TcM s (TcIdBndr s)
+tcLookupLocalValueOK :: String -> Name -> NF_TcM s (TcIdBndr s)
tcLookupLocalValueOK err name
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
returnNF_Tc (lookupWithDefaultUFM lve (panic err) name)
-tcLookupGlobalValue :: RnName -> NF_TcM s Id
-
-tcLookupGlobalValue (WiredInId id) -- wired in ids
- = returnNF_Tc id
-
+tcLookupGlobalValue :: Name -> NF_TcM s Id
tcLookupGlobalValue name
- = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
- returnNF_Tc (lookupWithDefaultUFM gve def name)
+ = case maybeWiredInIdName name of
+ Just id -> returnNF_Tc id
+ Nothing -> tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ returnNF_Tc (lookupWithDefaultUFM gve def name)
where
-#ifdef DEBUG
- def = pprPanic "tcLookupGlobalValue:" (ppr PprDebug name)
-#else
- def = panic "tcLookupGlobalValue"
-#endif
+ def = pprPanic "tcLookupGlobalValue:" (ppr name)
+
+tcLookupGlobalValueMaybe :: Name -> NF_TcM s (Maybe Id)
+tcLookupGlobalValueMaybe name
+ = case maybeWiredInIdName name of
+ Just id -> returnNF_Tc (Just id)
+ Nothing -> tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ returnNF_Tc (lookupUFM gve name)
+
tcLookupGlobalValueByKey :: Unique -> NF_TcM s Id
tcLookupGlobalValueByKey uniq
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
- returnNF_Tc (lookupWithDefaultUFM_Directly gve def uniq)
+ returnNF_Tc (lookupGlobalByKey gve uniq)
+
+lookupGlobalByKey :: GlobalValueEnv -> Unique -> Id
+lookupGlobalByKey gve uniq
+ = lookupWithDefaultUFM_Directly gve def uniq
where
#ifdef DEBUG
def = pprPanic "tcLookupGlobalValueByKey:" (pprUnique10 uniq)
def = panic "tcLookupGlobalValueByKey"
#endif
+tcLookupGlobalValueByKeyMaybe :: Unique -> NF_TcM s (Maybe Id)
+tcLookupGlobalValueByKeyMaybe uniq
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ returnNF_Tc (lookupUFM_Directly gve uniq)
+
+tcGetGlobalValEnv :: NF_TcM s GlobalValueEnv
+tcGetGlobalValEnv
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
+ returnNF_Tc gve
+
+tcSetGlobalValEnv :: GlobalValueEnv -> TcM s a -> TcM s a
+tcSetGlobalValEnv gve scope
+ = tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce _ lve gtvs) ->
+ tcSetEnv (TcEnv tve tce ce gve lve gtvs) scope
+
+
+-- Non-monadic version, environment given explicitly
+tcExplicitLookupGlobal :: GlobalValueEnv -> Name -> Maybe Id
+tcExplicitLookupGlobal gve name
+ = case maybeWiredInIdName name of
+ Just id -> Just id
+ Nothing -> lookupUFM gve name
+
+ -- Extract the IdInfo from an IfaceSig imported from an interface file
+tcAddImportedIdInfo :: GlobalValueEnv -> Id -> Id
+tcAddImportedIdInfo unf_env id
+ | isLocallyDefined id -- Don't look up locally defined Ids, because they
+ -- have explicit local definitions, so we get a black hole!
+ = id
+ | otherwise
+ = id `setIdInfo` new_info
+ -- The Id must be returned without a data dependency on maybe_id
+ where
+ new_info = -- pprTrace "tcAdd" (ppr id) $
+ case tcExplicitLookupGlobal unf_env (getName id) of
+ Nothing -> noIdInfo
+ Just imported_id -> idInfo imported_id
+ -- ToDo: could check that types are the same
\end{code}
~~~~~~~~~~~~~~~~~~~~
\begin{code}
-newMonoIds :: [RnName] -> Kind -> ([TcIdBndr s] -> TcM s a) -> TcM s a
-
-newMonoIds names kind m
- = newTyVarTys no_of_names kind `thenNF_Tc` \ tys ->
- tcGetUniques no_of_names `thenNF_Tc` \ uniqs ->
- let
- new_ids = zipWith3Equal mk_id names uniqs tys
-
- mk_id name uniq ty
- = let
- name_str = case (getOccName name) of { Unqual n -> n }
- in
- mkUserLocal name_str uniq ty (getSrcLoc name)
- in
- tcExtendLocalValEnv names new_ids (m new_ids)
- where
- no_of_names = length names
-
-newLocalId :: FAST_STRING -> TcType s -> NF_TcM s (TcIdOcc s)
+newLocalId :: OccName -> TcType s -> NF_TcM s (TcIdBndr s)
newLocalId name ty
- = tcGetSrcLoc `thenNF_Tc` \ loc ->
- tcGetUnique `thenNF_Tc` \ uniq ->
- returnNF_Tc (TcId (mkUserLocal name uniq ty loc))
+ = tcGetUnique `thenNF_Tc` \ uniq ->
+ returnNF_Tc (mkUserLocal name uniq ty)
-newLocalIds :: [FAST_STRING] -> [TcType s] -> NF_TcM s [TcIdOcc s]
+newLocalIds :: [OccName] -> [TcType s] -> NF_TcM s [TcIdBndr s]
newLocalIds names tys
- = tcGetSrcLoc `thenNF_Tc` \ loc ->
- tcGetUniques (length names) `thenNF_Tc` \ uniqs ->
+ = tcGetUniques (length names) `thenNF_Tc` \ uniqs ->
let
- new_ids = zipWith3Equal mk_id names uniqs tys
- mk_id name uniq ty = TcId (mkUserLocal name uniq ty loc)
+ new_ids = zipWith3Equal "newLocalIds" mk_id names uniqs tys
+ mk_id name uniq ty = mkUserLocal name uniq ty
in
returnNF_Tc new_ids
+
+newSpecPragmaId :: Name -> TcType s -> NF_TcM s (TcIdBndr s)
+newSpecPragmaId name ty
+ = tcGetUnique `thenNF_Tc` \ uniq ->
+ returnNF_Tc (mkSpecPragmaId (nameOccName name) uniq ty)
\end{code}
+\begin{code}
+classAsTyConErr name
+ = ptext SLIT("Class used as a type constructor:") <+> ppr name
+
+tyConAsClassErr name
+ = ptext SLIT("Type constructor used as a class:") <+> ppr name
+
+badCon con_id
+ = quotes (ppr con_id) <+> ptext SLIT("is not a data constructor")
+badPrimOp op
+ = quotes (ppr op) <+> ptext SLIT("is not a primop")
+\end{code}
projects / ghc-hetmet.git / blobdiff