module GHC.Types.Name.Shape
( NameShape(..)
, emptyNameShape
, mkNameShape
, extendNameShape
, nameShapeExports
, substNameShape
, maybeSubstNameShape
)
where
import GHC.Prelude
import GHC.Driver.Env
import GHC.Unit.Module
import GHC.Types.Avail
import GHC.Types.Name
import GHC.Types.Name.Env
import GHC.Tc.Utils.Monad
import GHC.Iface.Env
import GHC.Tc.Errors.Types
import GHC.Utils.Panic.Plain
import Control.Monad
emptyNameShape :: ModuleName -> NameShape
emptyNameShape :: ModuleName -> NameShape
emptyNameShape ModuleName
mod_name = ModuleName -> [AvailInfo] -> OccEnv Name -> NameShape
NameShape ModuleName
mod_name [] OccEnv Name
forall a. OccEnv a
emptyOccEnv
mkNameShape :: ModuleName -> [AvailInfo] -> NameShape
mkNameShape :: ModuleName -> [AvailInfo] -> NameShape
mkNameShape ModuleName
mod_name [AvailInfo]
as =
ModuleName -> [AvailInfo] -> OccEnv Name -> NameShape
NameShape ModuleName
mod_name [AvailInfo]
as (OccEnv Name -> NameShape) -> OccEnv Name -> NameShape
forall a b. (a -> b) -> a -> b
$ [(OccName, Name)] -> OccEnv Name
forall a. [(OccName, a)] -> OccEnv a
mkOccEnv ([(OccName, Name)] -> OccEnv Name)
-> [(OccName, Name)] -> OccEnv Name
forall a b. (a -> b) -> a -> b
$ do
a <- [AvailInfo]
as
n <- availName a : availNames a
return (occName n, n)
extendNameShape :: HscEnv -> NameShape -> [AvailInfo] -> IO (Either HsigShapeMismatchReason NameShape)
extendNameShape :: HscEnv
-> NameShape
-> [AvailInfo]
-> IO (Either HsigShapeMismatchReason NameShape)
extendNameShape HscEnv
hsc_env NameShape
ns [AvailInfo]
as =
case ModuleName
-> [AvailInfo]
-> [AvailInfo]
-> Either HsigShapeMismatchReason ShNameSubst
uAvailInfos (NameShape -> ModuleName
ns_mod_name NameShape
ns) (NameShape -> [AvailInfo]
ns_exports NameShape
ns) [AvailInfo]
as of
Left HsigShapeMismatchReason
err -> Either HsigShapeMismatchReason NameShape
-> IO (Either HsigShapeMismatchReason NameShape)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (HsigShapeMismatchReason -> Either HsigShapeMismatchReason NameShape
forall a b. a -> Either a b
Left HsigShapeMismatchReason
err)
Right ShNameSubst
nsubst -> do
as1 <- (AvailInfo -> IO AvailInfo) -> [AvailInfo] -> IO [AvailInfo]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
(a -> m b) -> t a -> m (t b)
forall (m :: * -> *) a b. Monad m => (a -> m b) -> [a] -> m [b]
mapM (IO AvailInfo -> IO AvailInfo
forall a. IO a -> IO a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO AvailInfo -> IO AvailInfo)
-> (AvailInfo -> IO AvailInfo) -> AvailInfo -> IO AvailInfo
forall b c a. (b -> c) -> (a -> b) -> a -> c
. HscEnv -> ShNameSubst -> AvailInfo -> IO AvailInfo
substNameAvailInfo HscEnv
hsc_env ShNameSubst
nsubst) (NameShape -> [AvailInfo]
ns_exports NameShape
ns)
as2 <- mapM (liftIO . substNameAvailInfo hsc_env nsubst) as
let new_avails = [AvailInfo] -> [AvailInfo] -> [AvailInfo]
mergeAvails [AvailInfo]
as1 [AvailInfo]
as2
return . Right $ ns {
ns_exports = new_avails,
ns_map = mkOccEnv $ do
a <- new_avails
n <- availName a : availNames a
return (occName n, n)
}
nameShapeExports :: NameShape -> [AvailInfo]
nameShapeExports :: NameShape -> [AvailInfo]
nameShapeExports = NameShape -> [AvailInfo]
ns_exports
substNameShape :: NameShape -> Name -> Name
substNameShape :: NameShape -> Name -> Name
substNameShape NameShape
ns Name
n | HasDebugCallStack => Name -> Module
Name -> Module
nameModule Name
n Module -> Module -> Bool
forall a. Eq a => a -> a -> Bool
== NameShape -> Module
ns_module NameShape
ns
, Just Name
n' <- OccEnv Name -> OccName -> Maybe Name
forall a. OccEnv a -> OccName -> Maybe a
lookupOccEnv (NameShape -> OccEnv Name
ns_map NameShape
ns) (Name -> OccName
forall name. HasOccName name => name -> OccName
occName Name
n)
= Name
n'
| Bool
otherwise
= Name
n
maybeSubstNameShape :: NameShape -> Name -> Maybe Name
maybeSubstNameShape :: NameShape -> Name -> Maybe Name
maybeSubstNameShape NameShape
ns Name
n
| HasDebugCallStack => Name -> Module
Name -> Module
nameModule Name
n Module -> Module -> Bool
forall a. Eq a => a -> a -> Bool
== NameShape -> Module
ns_module NameShape
ns
= OccEnv Name -> OccName -> Maybe Name
forall a. OccEnv a -> OccName -> Maybe a
lookupOccEnv (NameShape -> OccEnv Name
ns_map NameShape
ns) (Name -> OccName
forall name. HasOccName name => name -> OccName
occName Name
n)
| Bool
otherwise
= Maybe Name
forall a. Maybe a
Nothing
ns_module :: NameShape -> Module
ns_module :: NameShape -> Module
ns_module = ModuleName -> Module
forall u. ModuleName -> GenModule (GenUnit u)
mkHoleModule (ModuleName -> Module)
-> (NameShape -> ModuleName) -> NameShape -> Module
forall b c a. (b -> c) -> (a -> b) -> a -> c
. NameShape -> ModuleName
ns_mod_name
type ShNameSubst = NameEnv Name
substName :: ShNameSubst -> Name -> Name
substName :: ShNameSubst -> Name -> Name
substName ShNameSubst
env Name
n | Just Name
n' <- ShNameSubst -> Name -> Maybe Name
forall a. NameEnv a -> Name -> Maybe a
lookupNameEnv ShNameSubst
env Name
n = Name
n'
| Bool
otherwise = Name
n
substNameAvailInfo :: HscEnv -> ShNameSubst -> AvailInfo -> IO AvailInfo
substNameAvailInfo :: HscEnv -> ShNameSubst -> AvailInfo -> IO AvailInfo
substNameAvailInfo HscEnv
_ ShNameSubst
env (Avail Name
gre) =
AvailInfo -> IO AvailInfo
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (AvailInfo -> IO AvailInfo) -> AvailInfo -> IO AvailInfo
forall a b. (a -> b) -> a -> b
$ Name -> AvailInfo
Avail (ShNameSubst -> Name -> Name
substName ShNameSubst
env Name
gre)
substNameAvailInfo HscEnv
hsc_env ShNameSubst
env (AvailTC Name
n [Name]
ns) =
let mb_mod :: Maybe Module
mb_mod = (Name -> Module) -> Maybe Name -> Maybe Module
forall a b. (a -> b) -> Maybe a -> Maybe b
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap HasDebugCallStack => Name -> Module
Name -> Module
nameModule (ShNameSubst -> Name -> Maybe Name
forall a. NameEnv a -> Name -> Maybe a
lookupNameEnv ShNameSubst
env Name
n)
in Name -> [Name] -> AvailInfo
AvailTC (ShNameSubst -> Name -> Name
substName ShNameSubst
env Name
n) ([Name] -> AvailInfo) -> IO [Name] -> IO AvailInfo
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> (Name -> IO Name) -> [Name] -> IO [Name]
forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
(a -> m b) -> t a -> m (t b)
forall (m :: * -> *) a b. Monad m => (a -> m b) -> [a] -> m [b]
mapM (HscEnv -> Maybe Module -> Name -> IO Name
setName HscEnv
hsc_env Maybe Module
mb_mod) [Name]
ns
setName :: HscEnv -> Maybe Module -> Name -> IO Name
setName :: HscEnv -> Maybe Module -> Name -> IO Name
setName HscEnv
hsc_env Maybe Module
mb_mod Name
nm = HscEnv -> IfG Name -> IO Name
forall a. HscEnv -> IfG a -> IO a
initIfaceLoad HscEnv
hsc_env (Maybe Module -> Name -> IfG Name
forall m n. Maybe Module -> Name -> TcRnIf m n Name
setNameModule Maybe Module
mb_mod Name
nm)
mergeAvails :: [AvailInfo] -> [AvailInfo] -> [AvailInfo]
mergeAvails :: [AvailInfo] -> [AvailInfo] -> [AvailInfo]
mergeAvails [AvailInfo]
as1 [AvailInfo]
as2 =
let mkNE :: [AvailInfo] -> NameEnv AvailInfo
mkNE [AvailInfo]
as = [(Name, AvailInfo)] -> NameEnv AvailInfo
forall a. [(Name, a)] -> NameEnv a
mkNameEnv [(AvailInfo -> Name
availName AvailInfo
a, AvailInfo
a) | AvailInfo
a <- [AvailInfo]
as]
in NameEnv AvailInfo -> [AvailInfo]
forall a. NameEnv a -> [a]
nonDetNameEnvElts ((AvailInfo -> AvailInfo -> AvailInfo)
-> NameEnv AvailInfo -> NameEnv AvailInfo -> NameEnv AvailInfo
forall a. (a -> a -> a) -> NameEnv a -> NameEnv a -> NameEnv a
plusNameEnv_C AvailInfo -> AvailInfo -> AvailInfo
plusAvail ([AvailInfo] -> NameEnv AvailInfo
mkNE [AvailInfo]
as1) ([AvailInfo] -> NameEnv AvailInfo
mkNE [AvailInfo]
as2))
uAvailInfos :: ModuleName -> [AvailInfo] -> [AvailInfo] -> Either HsigShapeMismatchReason ShNameSubst
uAvailInfos :: ModuleName
-> [AvailInfo]
-> [AvailInfo]
-> Either HsigShapeMismatchReason ShNameSubst
uAvailInfos ModuleName
flexi [AvailInfo]
as1 [AvailInfo]
as2 =
let mkOE :: [AvailInfo] -> OccEnv AvailInfo
mkOE [AvailInfo]
as = [(OccName, AvailInfo)] -> OccEnv AvailInfo
forall a. [(OccName, a)] -> OccEnv a
mkOccEnv [(Name -> OccName
nameOccName Name
n, AvailInfo
a) | AvailInfo
a <- [AvailInfo]
as, Name
n <- AvailInfo -> [Name]
availNames AvailInfo
a]
in (ShNameSubst
-> (AvailInfo, AvailInfo)
-> Either HsigShapeMismatchReason ShNameSubst)
-> ShNameSubst
-> [(AvailInfo, AvailInfo)]
-> Either HsigShapeMismatchReason ShNameSubst
forall (t :: * -> *) (m :: * -> *) b a.
(Foldable t, Monad m) =>
(b -> a -> m b) -> b -> t a -> m b
foldM (\ShNameSubst
subst (AvailInfo
a1, AvailInfo
a2) -> ModuleName
-> ShNameSubst
-> AvailInfo
-> AvailInfo
-> Either HsigShapeMismatchReason ShNameSubst
uAvailInfo ModuleName
flexi ShNameSubst
subst AvailInfo
a1 AvailInfo
a2) ShNameSubst
forall a. NameEnv a
emptyNameEnv
(OccEnv (AvailInfo, AvailInfo) -> [(AvailInfo, AvailInfo)]
forall a. OccEnv a -> [a]
nonDetOccEnvElts (OccEnv (AvailInfo, AvailInfo) -> [(AvailInfo, AvailInfo)])
-> OccEnv (AvailInfo, AvailInfo) -> [(AvailInfo, AvailInfo)]
forall a b. (a -> b) -> a -> b
$ (AvailInfo -> AvailInfo -> (AvailInfo, AvailInfo))
-> OccEnv AvailInfo
-> OccEnv AvailInfo
-> OccEnv (AvailInfo, AvailInfo)
forall a b c. (a -> b -> c) -> OccEnv a -> OccEnv b -> OccEnv c
intersectOccEnv_C (,) ([AvailInfo] -> OccEnv AvailInfo
mkOE [AvailInfo]
as1) ([AvailInfo] -> OccEnv AvailInfo
mkOE [AvailInfo]
as2))
uAvailInfo :: ModuleName -> ShNameSubst -> AvailInfo -> AvailInfo
-> Either HsigShapeMismatchReason ShNameSubst
uAvailInfo :: ModuleName
-> ShNameSubst
-> AvailInfo
-> AvailInfo
-> Either HsigShapeMismatchReason ShNameSubst
uAvailInfo ModuleName
flexi ShNameSubst
subst (Avail Name
n1) (Avail Name
n2)
= ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uName ModuleName
flexi ShNameSubst
subst Name
n1 Name
n2
uAvailInfo ModuleName
flexi ShNameSubst
subst (AvailTC Name
n1 [Name]
_) (AvailTC Name
n2 [Name]
_)
= ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uName ModuleName
flexi ShNameSubst
subst Name
n1 Name
n2
uAvailInfo ModuleName
_ ShNameSubst
_ AvailInfo
a1 AvailInfo
a2 = HsigShapeMismatchReason
-> Either HsigShapeMismatchReason ShNameSubst
forall a b. a -> Either a b
Left (HsigShapeMismatchReason
-> Either HsigShapeMismatchReason ShNameSubst)
-> HsigShapeMismatchReason
-> Either HsigShapeMismatchReason ShNameSubst
forall a b. (a -> b) -> a -> b
$ AvailInfo -> AvailInfo -> HsigShapeMismatchReason
HsigShapeSortMismatch AvailInfo
a1 AvailInfo
a2
uName :: ModuleName -> ShNameSubst -> Name -> Name -> Either HsigShapeMismatchReason ShNameSubst
uName :: ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uName ModuleName
flexi ShNameSubst
subst Name
n1 Name
n2
| Name
n1 Name -> Name -> Bool
forall a. Eq a => a -> a -> Bool
== Name
n2 = ShNameSubst -> Either HsigShapeMismatchReason ShNameSubst
forall a b. b -> Either a b
Right ShNameSubst
subst
| Name -> Bool
isFlexi Name
n1 = ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uHoleName ModuleName
flexi ShNameSubst
subst Name
n1 Name
n2
| Name -> Bool
isFlexi Name
n2 = ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uHoleName ModuleName
flexi ShNameSubst
subst Name
n2 Name
n1
| Bool
otherwise = HsigShapeMismatchReason
-> Either HsigShapeMismatchReason ShNameSubst
forall a b. a -> Either a b
Left (Name -> Name -> Bool -> HsigShapeMismatchReason
HsigShapeNotUnifiable Name
n1 Name
n2 (Name -> Bool
isHoleName Name
n1 Bool -> Bool -> Bool
|| Name -> Bool
isHoleName Name
n2))
where
isFlexi :: Name -> Bool
isFlexi Name
n = Name -> Bool
isHoleName Name
n Bool -> Bool -> Bool
&& Module -> ModuleName
forall unit. GenModule unit -> ModuleName
moduleName (HasDebugCallStack => Name -> Module
Name -> Module
nameModule Name
n) ModuleName -> ModuleName -> Bool
forall a. Eq a => a -> a -> Bool
== ModuleName
flexi
uHoleName :: ModuleName -> ShNameSubst -> Name -> Name
-> Either HsigShapeMismatchReason ShNameSubst
uHoleName :: ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uHoleName ModuleName
flexi ShNameSubst
subst Name
h Name
n =
Bool
-> Either HsigShapeMismatchReason ShNameSubst
-> Either HsigShapeMismatchReason ShNameSubst
forall a. HasCallStack => Bool -> a -> a
assert (Name -> Bool
isHoleName Name
h) (Either HsigShapeMismatchReason ShNameSubst
-> Either HsigShapeMismatchReason ShNameSubst)
-> Either HsigShapeMismatchReason ShNameSubst
-> Either HsigShapeMismatchReason ShNameSubst
forall a b. (a -> b) -> a -> b
$
case ShNameSubst -> Name -> Maybe Name
forall a. NameEnv a -> Name -> Maybe a
lookupNameEnv ShNameSubst
subst Name
h of
Just Name
n' -> ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uName ModuleName
flexi ShNameSubst
subst Name
n' Name
n
Maybe Name
Nothing | Just Name
n' <- ShNameSubst -> Name -> Maybe Name
forall a. NameEnv a -> Name -> Maybe a
lookupNameEnv ShNameSubst
subst Name
n ->
Bool
-> Either HsigShapeMismatchReason ShNameSubst
-> Either HsigShapeMismatchReason ShNameSubst
forall a. HasCallStack => Bool -> a -> a
assert (Name -> Bool
isHoleName Name
n) (Either HsigShapeMismatchReason ShNameSubst
-> Either HsigShapeMismatchReason ShNameSubst)
-> Either HsigShapeMismatchReason ShNameSubst
-> Either HsigShapeMismatchReason ShNameSubst
forall a b. (a -> b) -> a -> b
$ ModuleName
-> ShNameSubst
-> Name
-> Name
-> Either HsigShapeMismatchReason ShNameSubst
uName ModuleName
flexi ShNameSubst
subst Name
h Name
n'
| Bool
otherwise ->
ShNameSubst -> Either HsigShapeMismatchReason ShNameSubst
forall a b. b -> Either a b
Right (ShNameSubst -> Name -> Name -> ShNameSubst
forall a. NameEnv a -> Name -> a -> NameEnv a
extendNameEnv ShNameSubst
subst Name
h Name
n)