(c) The University of Glasgow 2002-2006
\begin{code}
-{-# OPTIONS -w #-}
--- The above warning supression flag is a temporary kludge.
--- While working on this module you are encouraged to remove it and fix
--- any warnings in the module. See
--- http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
--- for details
-
module IfaceEnv (
newGlobalBinder, newIPName, newImplicitBinder,
lookupIfaceTop,
lookupOrig, lookupOrigNameCache, extendNameCache,
newIfaceName, newIfaceNames,
extendIfaceIdEnv, extendIfaceTyVarEnv,
- tcIfaceLclId, tcIfaceTyVar,
+ tcIfaceLclId, tcIfaceTyVar, lookupIfaceTyVar,
tcIfaceTick,
ifaceExportNames,
import DataCon
import Var
import Name
-import OccName
import PrelNames
import Module
-import UniqFM
+import LazyUniqFM
import FastString
import UniqSupply
import FiniteMap
-- For source type/class decls, this is the first occurrence
-- For iface ones, the LoadIface has alrady allocated a suitable name in the cache
newImplicitBinder base_name mk_sys_occ
- = newGlobalBinder (nameModule base_name)
- (mk_sys_occ (nameOccName base_name))
- (nameSrcSpan base_name)
+ | Just mod <- nameModule_maybe base_name
+ = newGlobalBinder mod occ loc
+ | otherwise -- When typechecking a [d| decl bracket |],
+ -- TH generates types, classes etc with Internal names,
+ -- so we follow suit for the implicit binders
+ = do { uniq <- newUnique
+ ; return (mkInternalName uniq occ loc) }
+ where
+ occ = mk_sys_occ (nameOccName base_name)
+ loc = nameSrcSpan base_name
ifaceExportNames :: [IfaceExport] -> TcRnIf gbl lcl [AvailInfo]
ifaceExportNames exports = do
key = occ_name_ip -- Ensures that ?x and %x get distinct Names
\end{code}
- Local helper functions (not exported)
+%************************************************************************
+%* *
+ Name cache access
+%* *
+%************************************************************************
\begin{code}
lookupOrigNameCache :: OrigNameCache -> Module -> OccName -> Maybe Name
-lookupOrigNameCache nc mod occ
- | mod == dATA_TUP || mod == gHC_PRIM, -- Boxed tuples from one,
+lookupOrigNameCache _ mod occ
+ -- XXX Why is gHC_UNIT not mentioned here?
+ | mod == gHC_TUPLE || mod == gHC_PRIM, -- Boxed tuples from one,
Just tup_info <- isTupleOcc_maybe occ -- unboxed from the other
= -- Special case for tuples; there are too many
-- of them to pre-populate the original-name cache
extendOrigNameCache :: OrigNameCache -> Name -> OrigNameCache
extendOrigNameCache nc name
- = extendNameCache nc (nameModule name) (nameOccName name) name
+ = ASSERT2( isExternalName name, ppr name )
+ extendNameCache nc (nameModule name) (nameOccName name) name
extendNameCache :: OrigNameCache -> Module -> OccName -> Name -> OrigNameCache
extendNameCache nc mod occ name
Nothing -> failIfM (text "Iface type variable out of scope: " <+> ppr occ)
}
+lookupIfaceTyVar :: FastString -> IfL (Maybe TyVar)
+lookupIfaceTyVar occ
+ = do { lcl <- getLclEnv
+ ; return (lookupUFM (if_tv_env lcl) occ) }
+
extendIfaceTyVarEnv :: [TyVar] -> IfL a -> IfL a
extendIfaceTyVarEnv tyvars thing_inside
= do { env <- getLclEnv