import HsSyn ( MonoBinds(..),
TyClDecl(..), ConDecl(..), ConDetails(..), BangType(..),
- getBangType
+ getBangType, conDetailsTys
)
import RnHsSyn ( RenamedTyClDecl, RenamedConDecl, RenamedContext )
import TcHsSyn ( TcMonoBinds, idsToMonoBinds )
-import BasicTypes ( NewOrData(..) )
+import BasicTypes ( NewOrData(..), RecFlag )
-import TcMonoType ( tcHsType, tcHsConSigType, tcHsBoxedSigType, kcTyVarScope, tcClassContext,
- kcHsContext, kcHsSigType, mkImmutTyVars
+import TcMonoType ( tcHsRecType, tcHsTyVars, tcRecClassContext,
+ kcHsContext, kcHsSigType, kcHsBoxedSigType
+ )
+import TcEnv ( tcExtendTyVarEnv,
+ tcLookupTyCon, tcLookupGlobalId,
+ TyThingDetails(..)
)
-import TcEnv ( tcExtendTyVarEnv, tcLookupTy, tcLookupValueByKey, TyThing(..), TyThingDetails(..) )
import TcMonad
import Class ( ClassContext )
import MkId ( mkDataConId, mkDataConWrapId, mkRecordSelId )
import FieldLabel
import Var ( Id, TyVar )
-import Name ( Name, isLocallyDefined, NamedThing(..) )
+import Module ( Module )
+import Name ( Name, NamedThing(..), isFrom )
import Outputable
import TyCon ( TyCon, isSynTyCon, isNewTyCon,
- tyConDataConsIfAvailable, tyConTyVars
+ tyConDataConsIfAvailable, tyConTyVars, tyConGenIds
)
import Type ( tyVarsOfTypes, splitFunTy, applyTys,
mkTyConApp, mkTyVarTys, mkForAllTys,
)
import TysWiredIn ( unitTy )
import VarSet ( intersectVarSet, isEmptyVarSet )
-import PrelNames ( unpackCStringIdKey, unpackCStringUtf8IdKey )
-import Util ( equivClasses )
+import PrelNames ( unpackCStringName, unpackCStringUtf8Name )
+import ListSetOps ( equivClasses )
\end{code}
%************************************************************************
%************************************************************************
\begin{code}
-tcTyDecl1 :: RenamedTyClDecl -> TcM s (Name, TyThingDetails)
-tcTyDecl1 (TySynonym tycon_name tyvar_names rhs src_loc)
- = tcLookupTy tycon_name `thenNF_Tc` \ (ATyCon tycon) ->
+tcTyDecl1 :: RecFlag -> RenamedTyClDecl -> TcM (Name, TyThingDetails)
+tcTyDecl1 is_rec (TySynonym tycon_name tyvar_names rhs src_loc)
+ = tcLookupTyCon tycon_name `thenNF_Tc` \ tycon ->
tcExtendTyVarEnv (tyConTyVars tycon) $
- tcHsType rhs `thenTc` \ rhs_ty ->
- -- Note tcHsType not tcHsSigType; we allow type synonyms
+ tcHsRecType is_rec rhs `thenTc` \ rhs_ty ->
+ -- Note tcHsRecType not tcHsRecSigType; we allow type synonyms
-- that aren't types; e.g. type List = []
--
-- If the RHS mentions tyvars that aren't in scope, we'll
returnTc (tycon_name, SynTyDetails rhs_ty)
-tcTyDecl1 (TyData new_or_data context tycon_name _ con_decls _ derivings _ src_loc)
- = tcLookupTy tycon_name `thenNF_Tc` \ (ATyCon tycon) ->
+tcTyDecl1 is_rec (TyData new_or_data context tycon_name _ con_decls _ derivings src_loc name1 name2)
+ = tcLookupTyCon tycon_name `thenNF_Tc` \ tycon ->
let
tyvars = tyConTyVars tycon
in
tcExtendTyVarEnv tyvars $
-- Typecheck the pieces
- tcClassContext context `thenTc` \ ctxt ->
- tc_derivs derivings `thenTc` \ derived_classes ->
- mapTc (tcConDecl new_or_data tycon tyvars ctxt) con_decls `thenTc` \ data_cons ->
-
- returnTc (tycon_name, DataTyDetails ctxt data_cons derived_classes)
- where
- tc_derivs Nothing = returnTc []
- tc_derivs (Just ds) = mapTc tc_deriv ds
-
- tc_deriv name = tcLookupTy name `thenTc` \ (AClass clas) ->
- returnTc clas
+ tcRecClassContext is_rec context `thenTc` \ ctxt ->
+ mapTc (tcConDecl is_rec new_or_data tycon tyvars ctxt) con_decls `thenTc` \ data_cons ->
+ returnTc (tycon_name, DataTyDetails ctxt data_cons)
\end{code}
\begin{code}
%************************************************************************
\begin{code}
-kcConDetails :: RenamedContext -> ConDetails Name -> TcM s ()
-kcConDetails ex_ctxt details
+kcConDetails :: NewOrData -> RenamedContext -> ConDetails Name -> TcM ()
+kcConDetails new_or_data ex_ctxt details
= kcHsContext ex_ctxt `thenTc_`
- kc_con_details details
+ mapTc_ kc_sig_type (conDetailsTys details)
where
- kc_con_details (VanillaCon btys) = mapTc_ kc_bty btys
- kc_con_details (InfixCon bty1 bty2) = mapTc_ kc_bty [bty1,bty2]
- kc_con_details (RecCon flds) = mapTc_ kc_field flds
-
- kc_field (_, bty) = kc_bty bty
+ kc_sig_type = case new_or_data of
+ DataType -> kcHsSigType
+ NewType -> kcHsBoxedSigType
+ -- Can't allow an unboxed type here, because we're effectively
+ -- going to remove the constructor while coercing it to a boxed type.
- kc_bty bty = kcHsSigType (getBangType bty)
-tcConDecl :: NewOrData -> TyCon -> [TyVar] -> ClassContext -> RenamedConDecl -> TcM s DataCon
+tcConDecl :: RecFlag -> NewOrData -> TyCon -> [TyVar] -> ClassContext -> RenamedConDecl -> TcM DataCon
-tcConDecl new_or_data tycon tyvars ctxt (ConDecl name wkr_name ex_tvs ex_ctxt details src_loc)
- = tcAddSrcLoc src_loc $
- kcTyVarScope ex_tvs (kcConDetails ex_ctxt details) `thenTc` \ ex_tv_kinds ->
- let
- ex_tyvars = mkImmutTyVars ex_tv_kinds
- in
- tcExtendTyVarEnv ex_tyvars $
- tcClassContext ex_ctxt `thenTc` \ ex_theta ->
+tcConDecl is_rec new_or_data tycon tyvars ctxt (ConDecl name wkr_name ex_tvs ex_ctxt details src_loc)
+ = tcAddSrcLoc src_loc $
+ tcHsTyVars ex_tvs (kcConDetails new_or_data ex_ctxt details) $ \ ex_tyvars ->
+ tcRecClassContext is_rec ex_ctxt `thenTc` \ ex_theta ->
case details of
VanillaCon btys -> tc_datacon ex_tyvars ex_theta btys
InfixCon bty1 bty2 -> tc_datacon ex_tyvars ex_theta [bty1,bty2]
RecCon fields -> tc_rec_con ex_tyvars ex_theta fields
where
- tc_sig_type = case new_or_data of
- DataType -> tcHsConSigType
- NewType -> tcHsBoxedSigType
- -- Can't allow an unboxed type here, because we're effectively
- -- going to remove the constructor while coercing it to a boxed type.
-
tc_datacon ex_tyvars ex_theta btys
= let
arg_stricts = map getBangStrictness btys
tys = map getBangType btys
in
- mapTc tc_sig_type tys `thenTc` \ arg_tys ->
+ mapTc (tcHsRecType is_rec) tys `thenTc` \ arg_tys ->
mk_data_con ex_tyvars ex_theta arg_stricts arg_tys []
tc_rec_con ex_tyvars ex_theta fields
(map fieldLabelType field_labels) field_labels
tc_field ((field_label_names, bty), tag)
- = tc_sig_type (getBangType bty) `thenTc` \ field_ty ->
+ = tcHsRecType is_rec (getBangType bty) `thenTc` \ field_ty ->
returnTc [mkFieldLabel (getName name) tycon field_ty tag | name <- field_label_names]
mk_data_con ex_tyvars ex_theta arg_stricts arg_tys fields
%************************************************************************
\begin{code}
-mkImplicitDataBinds :: [TyCon] -> TcM s ([Id], TcMonoBinds)
-mkImplicitDataBinds [] = returnTc ([], EmptyMonoBinds)
-mkImplicitDataBinds (tycon : tycons)
- | isSynTyCon tycon = mkImplicitDataBinds tycons
- | otherwise = mkImplicitDataBinds_one tycon `thenTc` \ (ids1, b1) ->
- mkImplicitDataBinds tycons `thenTc` \ (ids2, b2) ->
+mkImplicitDataBinds :: Module -> [TyCon] -> TcM ([Id], TcMonoBinds)
+mkImplicitDataBinds this_mod [] = returnTc ([], EmptyMonoBinds)
+mkImplicitDataBinds this_mod (tycon : tycons)
+ | isSynTyCon tycon = mkImplicitDataBinds this_mod tycons
+ | otherwise = mkImplicitDataBinds_one this_mod tycon `thenTc` \ (ids1, b1) ->
+ mkImplicitDataBinds this_mod tycons `thenTc` \ (ids2, b2) ->
returnTc (ids1++ids2, b1 `AndMonoBinds` b2)
-mkImplicitDataBinds_one tycon
+mkImplicitDataBinds_one this_mod tycon
= mapTc (mkRecordSelector tycon) groups `thenTc` \ sel_ids ->
let
- unf_ids = sel_ids ++ data_con_wrapper_ids
- all_ids = map dataConId data_cons ++ unf_ids
+ unf_ids = sel_ids ++ data_con_wrapper_ids ++ gen_ids
+ all_ids = map dataConId data_cons ++ unf_ids
-- For the locally-defined things
-- we need to turn the unfoldings inside the selector Ids into bindings,
-- and build bindigns for the constructor wrappers
- binds | isLocallyDefined tycon = idsToMonoBinds unf_ids
- | otherwise = EmptyMonoBinds
+ binds | isFrom this_mod tycon = idsToMonoBinds unf_ids
+ | otherwise = EmptyMonoBinds
in
returnTc (all_ids, binds)
where
data_cons = tyConDataConsIfAvailable tycon
-- Abstract types mean we don't bring the
-- data cons into scope, which should be fine
-
+ gen_ids = tyConGenIds tycon
data_con_wrapper_ids = map dataConWrapId data_cons
fields = [ (con, field) | con <- data_cons,
-- data type use the same type variables
= checkTc (all (== field_ty) other_tys)
(fieldTypeMisMatch field_name) `thenTc_`
- tcLookupValueByKey unpackCStringIdKey `thenTc` \ unpack_id ->
- tcLookupValueByKey unpackCStringUtf8IdKey `thenTc` \ unpackUtf8_id ->
+ tcLookupGlobalId unpackCStringName `thenTc` \ unpack_id ->
+ tcLookupGlobalId unpackCStringUtf8Name `thenTc` \ unpackUtf8_id ->
returnTc (mkRecordSelId tycon first_field_label unpack_id unpackUtf8_id)
where
field_ty = fieldLabelType first_field_label