initEnv, getEnv_LocalIds, getEnv_TyCons, getEnv_Classes,
- tcTyVarScope, tcTyVarScopeGivenKinds, tcLookupTyVar,
+ tcExtendTyVarEnv, tcLookupTyVar,
tcExtendTyConEnv, tcLookupTyCon, tcLookupTyConByKey,
tcExtendClassEnv, tcLookupClass, tcLookupClassByKey,
tcExtendGlobalValEnv, tcExtendLocalValEnv,
tcLookupLocalValue, tcLookupLocalValueOK, tcLookupLocalValueByKey,
- tcLookupGlobalValue, tcLookupGlobalValueByKey,
+ tcLookupGlobalValue, tcLookupGlobalValueByKey, tcLookupGlobalValueMaybe,
newMonoIds, newLocalIds, newLocalId,
- tcGetGlobalTyVars
+ tcGetGlobalTyVars, tcExtendGlobalTyVars
) where
IMP_Ubiq()
IMPORT_DELOOPER(TcMLoop) -- for paranoia checking
-import Id ( Id(..), GenId, idType, mkUserLocal )
-import TcHsSyn ( TcIdBndr(..), TcIdOcc(..) )
-import TcKind ( TcKind, newKindVars, tcDefaultKind, kindToTcKind )
-import TcType ( TcType(..), TcMaybe, TcTyVar(..), TcTyVarSet(..),
+import HsTypes ( HsTyVar(..) )
+import Id ( SYN_IE(Id), GenId, idType, mkUserLocal, mkUserId )
+import PragmaInfo ( PragmaInfo(..) )
+import TcHsSyn ( SYN_IE(TcIdBndr), TcIdOcc(..) )
+import TcKind ( TcKind, newKindVars, newKindVar, tcDefaultKind, kindToTcKind )
+import TcType ( SYN_IE(TcType), TcMaybe, SYN_IE(TcTyVar), SYN_IE(TcTyVarSet),
newTyVarTys, tcInstTyVars, zonkTcTyVars
)
-import TyVar ( mkTyVar, tyVarKind, unionTyVarSets, emptyTyVarSet )
-import Type ( tyVarsOfTypes )
+import TyVar ( unionTyVarSets, emptyTyVarSet )
+import Type ( tyVarsOfTypes, splitForAllTy )
import TyCon ( TyCon, tyConKind, synTyConArity )
-import Class ( Class(..), GenClass, classSig )
+import Class ( SYN_IE(Class), GenClass, classSig )
-import TcMonad hiding ( rnMtoTcM )
+import TcMonad
-import Name ( getOccName, getSrcLoc, Name{-instance NamedThing-} )
+import Name ( Name, OccName(..), getSrcLoc, occNameString,
+ maybeWiredInTyConName, maybeWiredInIdName, pprSym
+ )
import PprStyle
import Pretty
-import RnHsSyn ( RnName(..) )
-import Type ( splitForAllTy )
-import Unique ( pprUnique10, pprUnique{-ToDo:rm-} )
+import Unique ( pprUnique10{-, pprUnique ToDo:rm-} )
import UniqFM
import Util ( zipEqual, zipWithEqual, zipWith3Equal, zipLazy,
- panic, pprPanic, pprTrace{-ToDo:rm-}
+ panic, pprPanic{-, pprTrace ToDo:rm-}
)
\end{code}
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 (zipEqual "tcTyVarScopeGivenKinds" names (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 "tcTyVarScopeGivenKinds" 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
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
that the knot-tied TyVars, TyCons and Classes aren't looked at too early.
\begin{code}
-tcExtendTyConEnv :: [(RnName,Maybe Arity)] -> [TyCon] -> TcM s r -> TcM s r
+tcExtendTyConEnv :: [(Name,Maybe Arity)] -> [TyCon] -> TcM s r -> TcM s r
tcExtendTyConEnv names_w_arities tycons scope
= newKindVars (length names_w_arities) `thenNF_Tc` \ kinds ->
returnTc result
-tcExtendClassEnv :: [RnName] -> [Class] -> TcM s r -> TcM s r
+tcExtendClassEnv :: [Name] -> [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) ->
returnNF_Tc (lookupWithDefaultUFM tve (pprPanic "tcLookupTyVar:" (ppr PprShowAll 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)
+ = case maybeWiredInTyConName name of
+ Just tc -> returnTc (kindToTcKind (tyConKind tc), synTyConArity tc, tc)
+ Nothing -> 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 _ -> failTc (classAsTyConErr name)
+ Nothing -> pprPanic "tcLookupTyCon:" (ppr PprDebug name)
tcLookupTyConByKey uniq
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
= 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 -> returnTc stuff
+ Nothing -> -- Could be that he's using a type constructor as a class
+ case lookupUFM tce name of
+ Just _ -> failTc (tyConAsClassErr name)
+ Nothing -> pprPanic "tcLookupClass:" (ppr PprShowAll name)
tcLookupClassByKey uniq
= tcGetEnv `thenNF_Tc` \ (TcEnv tve tce ce gve lve gtvs) ->
zonkTcTyVars global_tvs `thenNF_Tc` \ global_tvs' ->
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 `unionTyVarSets` 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
+
+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
~~~~~~~~~~~~~~~~~~~~
\begin{code}
-newMonoIds :: [RnName] -> Kind -> ([TcIdBndr s] -> TcM s a) -> TcM s a
+-- Uses the Name as the Name of the Id
+newMonoIds :: [Name] -> 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 "newMonoIds" mk_id names uniqs tys
-
- mk_id name uniq ty
- = let
- name_str = case (getOccName name) of { Unqual n -> n; Qual m n -> n }
- in
- mkUserLocal name_str uniq ty (getSrcLoc name)
+ new_ids = zipWithEqual "newMonoIds" mk_id names tys
+ mk_id name ty = mkUserId name ty NoPragmaInfo
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))
+ returnNF_Tc (mkUserLocal name uniq ty loc)
-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 ->
let
new_ids = zipWith3Equal "newLocalIds" mk_id names uniqs tys
- mk_id name uniq ty = TcId (mkUserLocal name uniq ty loc)
+ mk_id name uniq ty = mkUserLocal name uniq ty loc
in
returnNF_Tc new_ids
\end{code}
+\begin{code}
+classAsTyConErr name sty
+ = ppBesides [ppStr "Class used as a type constructor: ", pprSym sty name]
+tyConAsClassErr name sty
+ = ppBesides [ppStr "Type constructor used as a class: ", pprSym sty name]
+\end{code}
projects / ghc-hetmet.git / blobdiff