{-# LANGUAGE CPP #-}
{-# LANGUAGE BangPatterns #-}
{-# OPTIONS_GHC -Wno-incomplete-record-updates #-}
module GHC.Core.TyCo.Subst
(
TCvSubst(..), TvSubstEnv, CvSubstEnv,
emptyTvSubstEnv, emptyCvSubstEnv, composeTCvSubstEnv, composeTCvSubst,
emptyTCvSubst, mkEmptyTCvSubst, isEmptyTCvSubst,
mkTCvSubst, mkTvSubst, mkCvSubst,
getTvSubstEnv,
getCvSubstEnv, getTCvInScope, getTCvSubstRangeFVs,
isInScope, elemTCvSubst, notElemTCvSubst,
setTvSubstEnv, setCvSubstEnv, zapTCvSubst,
extendTCvInScope, extendTCvInScopeList, extendTCvInScopeSet,
extendTCvSubst, extendTCvSubstWithClone,
extendCvSubst, extendCvSubstWithClone,
extendTvSubst, extendTvSubstBinderAndInScope, extendTvSubstWithClone,
extendTvSubstList, extendTvSubstAndInScope,
extendTCvSubstList,
unionTCvSubst, zipTyEnv, zipCoEnv,
zipTvSubst, zipCvSubst,
zipTCvSubst,
mkTvSubstPrs,
substTyWith, substTyWithCoVars, substTysWith, substTysWithCoVars,
substCoWith,
substTy, substTyAddInScope, substScaledTy,
substTyUnchecked, substTysUnchecked, substScaledTysUnchecked, substThetaUnchecked,
substTyWithUnchecked, substScaledTyUnchecked,
substCoUnchecked, substCoWithUnchecked,
substTyWithInScope,
substTys, substScaledTys, substTheta,
lookupTyVar,
substCo, substCos, substCoVar, substCoVars, lookupCoVar,
cloneTyVarBndr, cloneTyVarBndrs,
substVarBndr, substVarBndrs,
substTyVarBndr, substTyVarBndrs,
substCoVarBndr,
substTyVar, substTyVars, substTyCoVars,
substTyCoBndr,
substForAllCoBndr,
substVarBndrUsing, substForAllCoBndrUsing,
checkValidSubst, isValidTCvSubst,
) where
#include "HsVersions.h"
import GHC.Prelude
import {-# SOURCE #-} GHC.Core.Type
( mkCastTy, mkAppTy, isCoercionTy, mkTyConApp )
import {-# SOURCE #-} GHC.Core.Coercion
( mkCoVarCo, mkKindCo, mkNthCo, mkTransCo
, mkNomReflCo, mkSubCo, mkSymCo
, mkFunCo, mkForAllCo, mkUnivCo
, mkAxiomInstCo, mkAppCo, mkGReflCo
, mkInstCo, mkLRCo, mkTyConAppCo
, mkCoercionType
, coercionKind, coercionLKind, coVarKindsTypesRole )
import {-# SOURCE #-} GHC.Core.TyCo.Ppr ( pprTyVar )
import GHC.Core.TyCo.Rep
import GHC.Core.TyCo.FVs
import GHC.Types.Var
import GHC.Types.Var.Set
import GHC.Types.Var.Env
import GHC.Data.Pair
import GHC.Utils.Misc
import GHC.Types.Unique.Supply
import GHC.Types.Unique
import GHC.Types.Unique.FM
import GHC.Types.Unique.Set
import GHC.Utils.Outputable
import GHC.Utils.Panic
import Data.List (mapAccumL)
data TCvSubst
= TCvSubst InScopeSet
TvSubstEnv
CvSubstEnv
type TvSubstEnv = TyVarEnv Type
type CvSubstEnv = CoVarEnv Coercion
emptyTvSubstEnv :: TvSubstEnv
emptyTvSubstEnv :: TvSubstEnv
emptyTvSubstEnv = TvSubstEnv
forall a. VarEnv a
emptyVarEnv
emptyCvSubstEnv :: CvSubstEnv
emptyCvSubstEnv :: CvSubstEnv
emptyCvSubstEnv = CvSubstEnv
forall a. VarEnv a
emptyVarEnv
composeTCvSubstEnv :: InScopeSet
-> (TvSubstEnv, CvSubstEnv)
-> (TvSubstEnv, CvSubstEnv)
-> (TvSubstEnv, CvSubstEnv)
composeTCvSubstEnv :: InScopeSet
-> (TvSubstEnv, CvSubstEnv)
-> (TvSubstEnv, CvSubstEnv)
-> (TvSubstEnv, CvSubstEnv)
composeTCvSubstEnv InScopeSet
in_scope (TvSubstEnv
tenv1, CvSubstEnv
cenv1) (TvSubstEnv
tenv2, CvSubstEnv
cenv2)
= ( TvSubstEnv
tenv1 TvSubstEnv -> TvSubstEnv -> TvSubstEnv
forall a. VarEnv a -> VarEnv a -> VarEnv a
`plusVarEnv` (Type -> Type) -> TvSubstEnv -> TvSubstEnv
forall a b. (a -> b) -> VarEnv a -> VarEnv b
mapVarEnv (HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy TCvSubst
subst1) TvSubstEnv
tenv2
, CvSubstEnv
cenv1 CvSubstEnv -> CvSubstEnv -> CvSubstEnv
forall a. VarEnv a -> VarEnv a -> VarEnv a
`plusVarEnv` (Coercion -> Coercion) -> CvSubstEnv -> CvSubstEnv
forall a b. (a -> b) -> VarEnv a -> VarEnv b
mapVarEnv (HasCallStack => TCvSubst -> Coercion -> Coercion
TCvSubst -> Coercion -> Coercion
substCo TCvSubst
subst1) CvSubstEnv
cenv2 )
where
subst1 :: TCvSubst
subst1 = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
tenv1 CvSubstEnv
cenv1
composeTCvSubst :: TCvSubst -> TCvSubst -> TCvSubst
composeTCvSubst :: TCvSubst -> TCvSubst -> TCvSubst
composeTCvSubst (TCvSubst InScopeSet
is1 TvSubstEnv
tenv1 CvSubstEnv
cenv1) (TCvSubst InScopeSet
is2 TvSubstEnv
tenv2 CvSubstEnv
cenv2)
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
is3 TvSubstEnv
tenv3 CvSubstEnv
cenv3
where
is3 :: InScopeSet
is3 = InScopeSet
is1 InScopeSet -> InScopeSet -> InScopeSet
`unionInScope` InScopeSet
is2
(TvSubstEnv
tenv3, CvSubstEnv
cenv3) = InScopeSet
-> (TvSubstEnv, CvSubstEnv)
-> (TvSubstEnv, CvSubstEnv)
-> (TvSubstEnv, CvSubstEnv)
composeTCvSubstEnv InScopeSet
is3 (TvSubstEnv
tenv1, CvSubstEnv
cenv1) (TvSubstEnv
tenv2, CvSubstEnv
cenv2)
emptyTCvSubst :: TCvSubst
emptyTCvSubst :: TCvSubst
emptyTCvSubst = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
emptyInScopeSet TvSubstEnv
emptyTvSubstEnv CvSubstEnv
emptyCvSubstEnv
mkEmptyTCvSubst :: InScopeSet -> TCvSubst
mkEmptyTCvSubst :: InScopeSet -> TCvSubst
mkEmptyTCvSubst InScopeSet
is = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
is TvSubstEnv
emptyTvSubstEnv CvSubstEnv
emptyCvSubstEnv
isEmptyTCvSubst :: TCvSubst -> Bool
isEmptyTCvSubst :: TCvSubst -> Bool
isEmptyTCvSubst (TCvSubst InScopeSet
_ TvSubstEnv
tenv CvSubstEnv
cenv) = TvSubstEnv -> Bool
forall a. VarEnv a -> Bool
isEmptyVarEnv TvSubstEnv
tenv Bool -> Bool -> Bool
&& CvSubstEnv -> Bool
forall a. VarEnv a -> Bool
isEmptyVarEnv CvSubstEnv
cenv
mkTCvSubst :: InScopeSet -> (TvSubstEnv, CvSubstEnv) -> TCvSubst
mkTCvSubst :: InScopeSet -> (TvSubstEnv, CvSubstEnv) -> TCvSubst
mkTCvSubst InScopeSet
in_scope (TvSubstEnv
tenv, CvSubstEnv
cenv) = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv
mkTvSubst :: InScopeSet -> TvSubstEnv -> TCvSubst
mkTvSubst :: InScopeSet -> TvSubstEnv -> TCvSubst
mkTvSubst InScopeSet
in_scope TvSubstEnv
tenv = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
emptyCvSubstEnv
mkCvSubst :: InScopeSet -> CvSubstEnv -> TCvSubst
mkCvSubst :: InScopeSet -> CvSubstEnv -> TCvSubst
mkCvSubst InScopeSet
in_scope CvSubstEnv
cenv = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
emptyTvSubstEnv CvSubstEnv
cenv
getTvSubstEnv :: TCvSubst -> TvSubstEnv
getTvSubstEnv :: TCvSubst -> TvSubstEnv
getTvSubstEnv (TCvSubst InScopeSet
_ TvSubstEnv
env CvSubstEnv
_) = TvSubstEnv
env
getCvSubstEnv :: TCvSubst -> CvSubstEnv
getCvSubstEnv :: TCvSubst -> CvSubstEnv
getCvSubstEnv (TCvSubst InScopeSet
_ TvSubstEnv
_ CvSubstEnv
env) = CvSubstEnv
env
getTCvInScope :: TCvSubst -> InScopeSet
getTCvInScope :: TCvSubst -> InScopeSet
getTCvInScope (TCvSubst InScopeSet
in_scope TvSubstEnv
_ CvSubstEnv
_) = InScopeSet
in_scope
getTCvSubstRangeFVs :: TCvSubst -> VarSet
getTCvSubstRangeFVs :: TCvSubst -> VarSet
getTCvSubstRangeFVs (TCvSubst InScopeSet
_ TvSubstEnv
tenv CvSubstEnv
cenv)
= VarSet -> VarSet -> VarSet
unionVarSet VarSet
tenvFVs VarSet
cenvFVs
where
tenvFVs :: VarSet
tenvFVs = TvSubstEnv -> VarSet
shallowTyCoVarsOfTyVarEnv TvSubstEnv
tenv
cenvFVs :: VarSet
cenvFVs = CvSubstEnv -> VarSet
shallowTyCoVarsOfCoVarEnv CvSubstEnv
cenv
isInScope :: Var -> TCvSubst -> Bool
isInScope :: Var -> TCvSubst -> Bool
isInScope Var
v (TCvSubst InScopeSet
in_scope TvSubstEnv
_ CvSubstEnv
_) = Var
v Var -> InScopeSet -> Bool
`elemInScopeSet` InScopeSet
in_scope
elemTCvSubst :: Var -> TCvSubst -> Bool
elemTCvSubst :: Var -> TCvSubst -> Bool
elemTCvSubst Var
v (TCvSubst InScopeSet
_ TvSubstEnv
tenv CvSubstEnv
cenv)
| Var -> Bool
isTyVar Var
v
= Var
v Var -> TvSubstEnv -> Bool
forall a. Var -> VarEnv a -> Bool
`elemVarEnv` TvSubstEnv
tenv
| Bool
otherwise
= Var
v Var -> CvSubstEnv -> Bool
forall a. Var -> VarEnv a -> Bool
`elemVarEnv` CvSubstEnv
cenv
notElemTCvSubst :: Var -> TCvSubst -> Bool
notElemTCvSubst :: Var -> TCvSubst -> Bool
notElemTCvSubst Var
v = Bool -> Bool
not (Bool -> Bool) -> (TCvSubst -> Bool) -> TCvSubst -> Bool
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Var -> TCvSubst -> Bool
elemTCvSubst Var
v
setTvSubstEnv :: TCvSubst -> TvSubstEnv -> TCvSubst
setTvSubstEnv :: TCvSubst -> TvSubstEnv -> TCvSubst
setTvSubstEnv (TCvSubst InScopeSet
in_scope TvSubstEnv
_ CvSubstEnv
cenv) TvSubstEnv
tenv = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv
setCvSubstEnv :: TCvSubst -> CvSubstEnv -> TCvSubst
setCvSubstEnv :: TCvSubst -> CvSubstEnv -> TCvSubst
setCvSubstEnv (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
_) CvSubstEnv
cenv = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv
zapTCvSubst :: TCvSubst -> TCvSubst
zapTCvSubst :: TCvSubst -> TCvSubst
zapTCvSubst (TCvSubst InScopeSet
in_scope TvSubstEnv
_ CvSubstEnv
_) = InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
forall a. VarEnv a
emptyVarEnv CvSubstEnv
forall a. VarEnv a
emptyVarEnv
extendTCvInScope :: TCvSubst -> Var -> TCvSubst
extendTCvInScope :: TCvSubst -> Var -> TCvSubst
extendTCvInScope (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
var
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet -> Var -> InScopeSet
extendInScopeSet InScopeSet
in_scope Var
var) TvSubstEnv
tenv CvSubstEnv
cenv
extendTCvInScopeList :: TCvSubst -> [Var] -> TCvSubst
extendTCvInScopeList :: TCvSubst -> [Var] -> TCvSubst
extendTCvInScopeList (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) [Var]
vars
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet -> [Var] -> InScopeSet
extendInScopeSetList InScopeSet
in_scope [Var]
vars) TvSubstEnv
tenv CvSubstEnv
cenv
extendTCvInScopeSet :: TCvSubst -> VarSet -> TCvSubst
extendTCvInScopeSet :: TCvSubst -> VarSet -> TCvSubst
extendTCvInScopeSet (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) VarSet
vars
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet -> VarSet -> InScopeSet
extendInScopeSetSet InScopeSet
in_scope VarSet
vars) TvSubstEnv
tenv CvSubstEnv
cenv
extendTCvSubst :: TCvSubst -> TyCoVar -> Type -> TCvSubst
extendTCvSubst :: TCvSubst -> Var -> Type -> TCvSubst
extendTCvSubst TCvSubst
subst Var
v Type
ty
| Var -> Bool
isTyVar Var
v
= TCvSubst -> Var -> Type -> TCvSubst
extendTvSubst TCvSubst
subst Var
v Type
ty
| CoercionTy Coercion
co <- Type
ty
= TCvSubst -> Var -> Coercion -> TCvSubst
extendCvSubst TCvSubst
subst Var
v Coercion
co
| Bool
otherwise
= String -> SDoc -> TCvSubst
forall a. HasCallStack => String -> SDoc -> a
pprPanic String
"extendTCvSubst" (Var -> SDoc
forall a. Outputable a => a -> SDoc
ppr Var
v SDoc -> SDoc -> SDoc
<+> String -> SDoc
text String
"|->" SDoc -> SDoc -> SDoc
<+> Type -> SDoc
forall a. Outputable a => a -> SDoc
ppr Type
ty)
extendTCvSubstWithClone :: TCvSubst -> TyCoVar -> TyCoVar -> TCvSubst
extendTCvSubstWithClone :: TCvSubst -> Var -> Var -> TCvSubst
extendTCvSubstWithClone TCvSubst
subst Var
tcv
| Var -> Bool
isTyVar Var
tcv = TCvSubst -> Var -> Var -> TCvSubst
extendTvSubstWithClone TCvSubst
subst Var
tcv
| Bool
otherwise = TCvSubst -> Var -> Var -> TCvSubst
extendCvSubstWithClone TCvSubst
subst Var
tcv
extendTvSubst :: TCvSubst -> TyVar -> Type -> TCvSubst
extendTvSubst :: TCvSubst -> Var -> Type -> TCvSubst
extendTvSubst (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
tv Type
ty
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope (TvSubstEnv -> Var -> Type -> TvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv TvSubstEnv
tenv Var
tv Type
ty) CvSubstEnv
cenv
extendTvSubstBinderAndInScope :: TCvSubst -> TyCoBinder -> Type -> TCvSubst
extendTvSubstBinderAndInScope :: TCvSubst -> TyCoBinder -> Type -> TCvSubst
extendTvSubstBinderAndInScope TCvSubst
subst (Named (Bndr Var
v ArgFlag
_)) Type
ty
= ASSERT( isTyVar v )
TCvSubst -> Var -> Type -> TCvSubst
extendTvSubstAndInScope TCvSubst
subst Var
v Type
ty
extendTvSubstBinderAndInScope TCvSubst
subst (Anon {}) Type
_
= TCvSubst
subst
extendTvSubstWithClone :: TCvSubst -> TyVar -> TyVar -> TCvSubst
extendTvSubstWithClone :: TCvSubst -> Var -> Var -> TCvSubst
extendTvSubstWithClone (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
tv Var
tv'
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet -> VarSet -> InScopeSet
extendInScopeSetSet InScopeSet
in_scope VarSet
new_in_scope)
(TvSubstEnv -> Var -> Type -> TvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv TvSubstEnv
tenv Var
tv (Var -> Type
mkTyVarTy Var
tv'))
CvSubstEnv
cenv
where
new_in_scope :: VarSet
new_in_scope = Type -> VarSet
tyCoVarsOfType (Var -> Type
tyVarKind Var
tv') VarSet -> Var -> VarSet
`extendVarSet` Var
tv'
extendCvSubst :: TCvSubst -> CoVar -> Coercion -> TCvSubst
extendCvSubst :: TCvSubst -> Var -> Coercion -> TCvSubst
extendCvSubst (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
v Coercion
co
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst InScopeSet
in_scope TvSubstEnv
tenv (CvSubstEnv -> Var -> Coercion -> CvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv CvSubstEnv
cenv Var
v Coercion
co)
extendCvSubstWithClone :: TCvSubst -> CoVar -> CoVar -> TCvSubst
extendCvSubstWithClone :: TCvSubst -> Var -> Var -> TCvSubst
extendCvSubstWithClone (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
cv Var
cv'
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet -> VarSet -> InScopeSet
extendInScopeSetSet InScopeSet
in_scope VarSet
new_in_scope)
TvSubstEnv
tenv
(CvSubstEnv -> Var -> Coercion -> CvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv CvSubstEnv
cenv Var
cv (Var -> Coercion
mkCoVarCo Var
cv'))
where
new_in_scope :: VarSet
new_in_scope = Type -> VarSet
tyCoVarsOfType (Var -> Type
varType Var
cv') VarSet -> Var -> VarSet
`extendVarSet` Var
cv'
extendTvSubstAndInScope :: TCvSubst -> TyVar -> Type -> TCvSubst
extendTvSubstAndInScope :: TCvSubst -> Var -> Type -> TCvSubst
extendTvSubstAndInScope (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
tv Type
ty
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet
in_scope InScopeSet -> VarSet -> InScopeSet
`extendInScopeSetSet` Type -> VarSet
tyCoVarsOfType Type
ty)
(TvSubstEnv -> Var -> Type -> TvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv TvSubstEnv
tenv Var
tv Type
ty)
CvSubstEnv
cenv
extendTvSubstList :: TCvSubst -> [Var] -> [Type] -> TCvSubst
extendTvSubstList :: TCvSubst -> [Var] -> [Type] -> TCvSubst
extendTvSubstList TCvSubst
subst [Var]
tvs [Type]
tys
= (TCvSubst -> Var -> Type -> TCvSubst)
-> TCvSubst -> [Var] -> [Type] -> TCvSubst
forall acc a b. (acc -> a -> b -> acc) -> acc -> [a] -> [b] -> acc
foldl2 TCvSubst -> Var -> Type -> TCvSubst
extendTvSubst TCvSubst
subst [Var]
tvs [Type]
tys
extendTCvSubstList :: TCvSubst -> [Var] -> [Type] -> TCvSubst
extendTCvSubstList :: TCvSubst -> [Var] -> [Type] -> TCvSubst
extendTCvSubstList TCvSubst
subst [Var]
tvs [Type]
tys
= (TCvSubst -> Var -> Type -> TCvSubst)
-> TCvSubst -> [Var] -> [Type] -> TCvSubst
forall acc a b. (acc -> a -> b -> acc) -> acc -> [a] -> [b] -> acc
foldl2 TCvSubst -> Var -> Type -> TCvSubst
extendTCvSubst TCvSubst
subst [Var]
tvs [Type]
tys
unionTCvSubst :: TCvSubst -> TCvSubst -> TCvSubst
unionTCvSubst :: TCvSubst -> TCvSubst -> TCvSubst
unionTCvSubst (TCvSubst InScopeSet
in_scope1 TvSubstEnv
tenv1 CvSubstEnv
cenv1) (TCvSubst InScopeSet
in_scope2 TvSubstEnv
tenv2 CvSubstEnv
cenv2)
= ASSERT( tenv1 `disjointVarEnv` tenv2
&& cenv1 `disjointVarEnv` cenv2 )
InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet
in_scope1 InScopeSet -> InScopeSet -> InScopeSet
`unionInScope` InScopeSet
in_scope2)
(TvSubstEnv
tenv1 TvSubstEnv -> TvSubstEnv -> TvSubstEnv
forall a. VarEnv a -> VarEnv a -> VarEnv a
`plusVarEnv` TvSubstEnv
tenv2)
(CvSubstEnv
cenv1 CvSubstEnv -> CvSubstEnv -> CvSubstEnv
forall a. VarEnv a -> VarEnv a -> VarEnv a
`plusVarEnv` CvSubstEnv
cenv2)
zipTvSubst :: HasDebugCallStack => [TyVar] -> [Type] -> TCvSubst
zipTvSubst :: HasDebugCallStack => [Var] -> [Type] -> TCvSubst
zipTvSubst [Var]
tvs [Type]
tys
= InScopeSet -> TvSubstEnv -> TCvSubst
mkTvSubst (VarSet -> InScopeSet
mkInScopeSet ([Type] -> VarSet
shallowTyCoVarsOfTypes [Type]
tys)) TvSubstEnv
tenv
where
tenv :: TvSubstEnv
tenv = [Var] -> [Type] -> TvSubstEnv
HasDebugCallStack => [Var] -> [Type] -> TvSubstEnv
zipTyEnv [Var]
tvs [Type]
tys
zipCvSubst :: HasDebugCallStack => [CoVar] -> [Coercion] -> TCvSubst
zipCvSubst :: HasDebugCallStack => [Var] -> [Coercion] -> TCvSubst
zipCvSubst [Var]
cvs [Coercion]
cos
= InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (VarSet -> InScopeSet
mkInScopeSet ([Coercion] -> VarSet
shallowTyCoVarsOfCos [Coercion]
cos)) TvSubstEnv
emptyTvSubstEnv CvSubstEnv
cenv
where
cenv :: CvSubstEnv
cenv = [Var] -> [Coercion] -> CvSubstEnv
HasDebugCallStack => [Var] -> [Coercion] -> CvSubstEnv
zipCoEnv [Var]
cvs [Coercion]
cos
zipTCvSubst :: HasDebugCallStack => [TyCoVar] -> [Type] -> TCvSubst
zipTCvSubst :: HasDebugCallStack => [Var] -> [Type] -> TCvSubst
zipTCvSubst [Var]
tcvs [Type]
tys
= [Var] -> [Type] -> TCvSubst -> TCvSubst
zip_tcvsubst [Var]
tcvs [Type]
tys (TCvSubst -> TCvSubst) -> TCvSubst -> TCvSubst
forall a b. (a -> b) -> a -> b
$
InScopeSet -> TCvSubst
mkEmptyTCvSubst (InScopeSet -> TCvSubst) -> InScopeSet -> TCvSubst
forall a b. (a -> b) -> a -> b
$ VarSet -> InScopeSet
mkInScopeSet (VarSet -> InScopeSet) -> VarSet -> InScopeSet
forall a b. (a -> b) -> a -> b
$ [Type] -> VarSet
shallowTyCoVarsOfTypes [Type]
tys
where zip_tcvsubst :: [TyCoVar] -> [Type] -> TCvSubst -> TCvSubst
zip_tcvsubst :: [Var] -> [Type] -> TCvSubst -> TCvSubst
zip_tcvsubst (Var
tv:[Var]
tvs) (Type
ty:[Type]
tys) TCvSubst
subst
= [Var] -> [Type] -> TCvSubst -> TCvSubst
zip_tcvsubst [Var]
tvs [Type]
tys (TCvSubst -> Var -> Type -> TCvSubst
extendTCvSubst TCvSubst
subst Var
tv Type
ty)
zip_tcvsubst [] [] TCvSubst
subst = TCvSubst
subst
zip_tcvsubst [Var]
_ [Type]
_ TCvSubst
_ = String -> SDoc -> TCvSubst
forall a. HasCallStack => String -> SDoc -> a
pprPanic String
"zipTCvSubst: length mismatch"
([Var] -> SDoc
forall a. Outputable a => a -> SDoc
ppr [Var]
tcvs SDoc -> SDoc -> SDoc
<+> [Type] -> SDoc
forall a. Outputable a => a -> SDoc
ppr [Type]
tys)
mkTvSubstPrs :: [(TyVar, Type)] -> TCvSubst
mkTvSubstPrs :: [(Var, Type)] -> TCvSubst
mkTvSubstPrs [] = TCvSubst
emptyTCvSubst
mkTvSubstPrs [(Var, Type)]
prs =
ASSERT2( onlyTyVarsAndNoCoercionTy, text "prs" <+> ppr prs )
InScopeSet -> TvSubstEnv -> TCvSubst
mkTvSubst InScopeSet
in_scope TvSubstEnv
tenv
where tenv :: TvSubstEnv
tenv = [(Var, Type)] -> TvSubstEnv
forall a. [(Var, a)] -> VarEnv a
mkVarEnv [(Var, Type)]
prs
in_scope :: InScopeSet
in_scope = VarSet -> InScopeSet
mkInScopeSet (VarSet -> InScopeSet) -> VarSet -> InScopeSet
forall a b. (a -> b) -> a -> b
$ [Type] -> VarSet
shallowTyCoVarsOfTypes ([Type] -> VarSet) -> [Type] -> VarSet
forall a b. (a -> b) -> a -> b
$ ((Var, Type) -> Type) -> [(Var, Type)] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map (Var, Type) -> Type
forall a b. (a, b) -> b
snd [(Var, Type)]
prs
onlyTyVarsAndNoCoercionTy :: Bool
onlyTyVarsAndNoCoercionTy =
[Bool] -> Bool
forall (t :: * -> *). Foldable t => t Bool -> Bool
and [ Var -> Bool
isTyVar Var
tv Bool -> Bool -> Bool
&& Bool -> Bool
not (Type -> Bool
isCoercionTy Type
ty)
| (Var
tv, Type
ty) <- [(Var, Type)]
prs ]
zipTyEnv :: HasDebugCallStack => [TyVar] -> [Type] -> TvSubstEnv
zipTyEnv :: HasDebugCallStack => [Var] -> [Type] -> TvSubstEnv
zipTyEnv [Var]
tyvars [Type]
tys
| Bool
debugIsOn
, Bool -> Bool
not ((Var -> Bool) -> [Var] -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
all Var -> Bool
isTyVar [Var]
tyvars Bool -> Bool -> Bool
&& ([Var]
tyvars [Var] -> [Type] -> Bool
forall a b. [a] -> [b] -> Bool
`equalLength` [Type]
tys))
= String -> SDoc -> TvSubstEnv
forall a. HasCallStack => String -> SDoc -> a
pprPanic String
"zipTyEnv" ([Var] -> SDoc
forall a. Outputable a => a -> SDoc
ppr [Var]
tyvars SDoc -> SDoc -> SDoc
$$ [Type] -> SDoc
forall a. Outputable a => a -> SDoc
ppr [Type]
tys)
| Bool
otherwise
= ASSERT( all (not . isCoercionTy) tys )
[Var] -> [Type] -> TvSubstEnv
forall key elt. Uniquable key => [key] -> [elt] -> UniqFM key elt
zipToUFM [Var]
tyvars [Type]
tys
zipCoEnv :: HasDebugCallStack => [CoVar] -> [Coercion] -> CvSubstEnv
zipCoEnv :: HasDebugCallStack => [Var] -> [Coercion] -> CvSubstEnv
zipCoEnv [Var]
cvs [Coercion]
cos
| Bool
debugIsOn
, Bool -> Bool
not ((Var -> Bool) -> [Var] -> Bool
forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
all Var -> Bool
isCoVar [Var]
cvs)
= String -> SDoc -> CvSubstEnv
forall a. HasCallStack => String -> SDoc -> a
pprPanic String
"zipCoEnv" ([Var] -> SDoc
forall a. Outputable a => a -> SDoc
ppr [Var]
cvs SDoc -> SDoc -> SDoc
<+> [Coercion] -> SDoc
forall a. Outputable a => a -> SDoc
ppr [Coercion]
cos)
| Bool
otherwise
= [(Var, Coercion)] -> CvSubstEnv
forall a. [(Var, a)] -> VarEnv a
mkVarEnv (String -> [Var] -> [Coercion] -> [(Var, Coercion)]
forall a b. String -> [a] -> [b] -> [(a, b)]
zipEqual String
"zipCoEnv" [Var]
cvs [Coercion]
cos)
instance Outputable TCvSubst where
ppr :: TCvSubst -> SDoc
ppr (TCvSubst InScopeSet
ins TvSubstEnv
tenv CvSubstEnv
cenv)
= SDoc -> SDoc
brackets (SDoc -> SDoc) -> SDoc -> SDoc
forall a b. (a -> b) -> a -> b
$ [SDoc] -> SDoc
sep[ String -> SDoc
text String
"TCvSubst",
Int -> SDoc -> SDoc
nest Int
2 (String -> SDoc
text String
"In scope:" SDoc -> SDoc -> SDoc
<+> InScopeSet -> SDoc
forall a. Outputable a => a -> SDoc
ppr InScopeSet
ins),
Int -> SDoc -> SDoc
nest Int
2 (String -> SDoc
text String
"Type env:" SDoc -> SDoc -> SDoc
<+> TvSubstEnv -> SDoc
forall a. Outputable a => a -> SDoc
ppr TvSubstEnv
tenv),
Int -> SDoc -> SDoc
nest Int
2 (String -> SDoc
text String
"Co env:" SDoc -> SDoc -> SDoc
<+> CvSubstEnv -> SDoc
forall a. Outputable a => a -> SDoc
ppr CvSubstEnv
cenv) ]
substTyWith :: HasCallStack => [TyVar] -> [Type] -> Type -> Type
substTyWith :: HasCallStack => [Var] -> [Type] -> Type -> Type
substTyWith [Var]
tvs [Type]
tys = {-#SCC "substTyWith" #-}
ASSERT( tvs `equalLength` tys )
HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy ([Var] -> [Type] -> TCvSubst
HasDebugCallStack => [Var] -> [Type] -> TCvSubst
zipTvSubst [Var]
tvs [Type]
tys)
substTyWithUnchecked :: [TyVar] -> [Type] -> Type -> Type
substTyWithUnchecked :: [Var] -> [Type] -> Type -> Type
substTyWithUnchecked [Var]
tvs [Type]
tys
= ASSERT( tvs `equalLength` tys )
TCvSubst -> Type -> Type
substTyUnchecked ([Var] -> [Type] -> TCvSubst
HasDebugCallStack => [Var] -> [Type] -> TCvSubst
zipTvSubst [Var]
tvs [Type]
tys)
substTyWithInScope :: InScopeSet -> [TyVar] -> [Type] -> Type -> Type
substTyWithInScope :: InScopeSet -> [Var] -> [Type] -> Type -> Type
substTyWithInScope InScopeSet
in_scope [Var]
tvs [Type]
tys Type
ty =
ASSERT( tvs `equalLength` tys )
HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy (InScopeSet -> TvSubstEnv -> TCvSubst
mkTvSubst InScopeSet
in_scope TvSubstEnv
tenv) Type
ty
where tenv :: TvSubstEnv
tenv = [Var] -> [Type] -> TvSubstEnv
HasDebugCallStack => [Var] -> [Type] -> TvSubstEnv
zipTyEnv [Var]
tvs [Type]
tys
substCoWith :: HasCallStack => [TyVar] -> [Type] -> Coercion -> Coercion
substCoWith :: HasCallStack => [Var] -> [Type] -> Coercion -> Coercion
substCoWith [Var]
tvs [Type]
tys = ASSERT( tvs `equalLength` tys )
HasCallStack => TCvSubst -> Coercion -> Coercion
TCvSubst -> Coercion -> Coercion
substCo ([Var] -> [Type] -> TCvSubst
HasDebugCallStack => [Var] -> [Type] -> TCvSubst
zipTvSubst [Var]
tvs [Type]
tys)
substCoWithUnchecked :: [TyVar] -> [Type] -> Coercion -> Coercion
substCoWithUnchecked :: [Var] -> [Type] -> Coercion -> Coercion
substCoWithUnchecked [Var]
tvs [Type]
tys
= ASSERT( tvs `equalLength` tys )
TCvSubst -> Coercion -> Coercion
substCoUnchecked ([Var] -> [Type] -> TCvSubst
HasDebugCallStack => [Var] -> [Type] -> TCvSubst
zipTvSubst [Var]
tvs [Type]
tys)
substTyWithCoVars :: [CoVar] -> [Coercion] -> Type -> Type
substTyWithCoVars :: [Var] -> [Coercion] -> Type -> Type
substTyWithCoVars [Var]
cvs [Coercion]
cos = HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy ([Var] -> [Coercion] -> TCvSubst
HasDebugCallStack => [Var] -> [Coercion] -> TCvSubst
zipCvSubst [Var]
cvs [Coercion]
cos)
substTysWith :: [TyVar] -> [Type] -> [Type] -> [Type]
substTysWith :: [Var] -> [Type] -> [Type] -> [Type]
substTysWith [Var]
tvs [Type]
tys = ASSERT( tvs `equalLength` tys )
HasCallStack => TCvSubst -> [Type] -> [Type]
TCvSubst -> [Type] -> [Type]
substTys ([Var] -> [Type] -> TCvSubst
HasDebugCallStack => [Var] -> [Type] -> TCvSubst
zipTvSubst [Var]
tvs [Type]
tys)
substTysWithCoVars :: [CoVar] -> [Coercion] -> [Type] -> [Type]
substTysWithCoVars :: [Var] -> [Coercion] -> [Type] -> [Type]
substTysWithCoVars [Var]
cvs [Coercion]
cos = ASSERT( cvs `equalLength` cos )
HasCallStack => TCvSubst -> [Type] -> [Type]
TCvSubst -> [Type] -> [Type]
substTys ([Var] -> [Coercion] -> TCvSubst
HasDebugCallStack => [Var] -> [Coercion] -> TCvSubst
zipCvSubst [Var]
cvs [Coercion]
cos)
substTyAddInScope :: TCvSubst -> Type -> Type
substTyAddInScope :: TCvSubst -> Type -> Type
substTyAddInScope TCvSubst
subst Type
ty =
HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy (TCvSubst -> VarSet -> TCvSubst
extendTCvInScopeSet TCvSubst
subst (VarSet -> TCvSubst) -> VarSet -> TCvSubst
forall a b. (a -> b) -> a -> b
$ Type -> VarSet
tyCoVarsOfType Type
ty) Type
ty
isValidTCvSubst :: TCvSubst -> Bool
isValidTCvSubst :: TCvSubst -> Bool
isValidTCvSubst (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) =
(VarSet
tenvFVs VarSet -> InScopeSet -> Bool
`varSetInScope` InScopeSet
in_scope) Bool -> Bool -> Bool
&&
(VarSet
cenvFVs VarSet -> InScopeSet -> Bool
`varSetInScope` InScopeSet
in_scope)
where
tenvFVs :: VarSet
tenvFVs = TvSubstEnv -> VarSet
shallowTyCoVarsOfTyVarEnv TvSubstEnv
tenv
cenvFVs :: VarSet
cenvFVs = CvSubstEnv -> VarSet
shallowTyCoVarsOfCoVarEnv CvSubstEnv
cenv
checkValidSubst :: HasCallStack => TCvSubst -> [Type] -> [Coercion] -> a -> a
checkValidSubst :: forall a.
HasCallStack =>
TCvSubst -> [Type] -> [Coercion] -> a -> a
checkValidSubst subst :: TCvSubst
subst@(TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) [Type]
tys [Coercion]
cos a
a
= ASSERT2( isValidTCvSubst subst,
text "in_scope" <+> ppr in_scope $$
text "tenv" <+> ppr tenv $$
text "tenvFVs" <+> ppr (shallowTyCoVarsOfTyVarEnv tenv) $$
text "cenv" <+> ppr cenv $$
text "cenvFVs" <+> ppr (shallowTyCoVarsOfCoVarEnv cenv) $$
text "tys" <+> ppr tys $$
text "cos" <+> ppr cos )
ASSERT2( tysCosFVsInScope,
text "in_scope" <+> ppr in_scope $$
text "tenv" <+> ppr tenv $$
text "cenv" <+> ppr cenv $$
text "tys" <+> ppr tys $$
text "cos" <+> ppr cos $$
text "needInScope" <+> ppr needInScope )
a
a
where
substDomain :: [Unique]
substDomain = TvSubstEnv -> [Unique]
forall key elt. UniqFM key elt -> [Unique]
nonDetKeysUFM TvSubstEnv
tenv [Unique] -> [Unique] -> [Unique]
forall a. [a] -> [a] -> [a]
++ CvSubstEnv -> [Unique]
forall key elt. UniqFM key elt -> [Unique]
nonDetKeysUFM CvSubstEnv
cenv
needInScope :: VarSet
needInScope = ([Type] -> VarSet
shallowTyCoVarsOfTypes [Type]
tys VarSet -> VarSet -> VarSet
`unionVarSet`
[Coercion] -> VarSet
shallowTyCoVarsOfCos [Coercion]
cos)
VarSet -> [Unique] -> VarSet
forall a. UniqSet a -> [Unique] -> UniqSet a
`delListFromUniqSet_Directly` [Unique]
substDomain
tysCosFVsInScope :: Bool
tysCosFVsInScope = VarSet
needInScope VarSet -> InScopeSet -> Bool
`varSetInScope` InScopeSet
in_scope
substTy :: HasCallStack => TCvSubst -> Type -> Type
substTy :: HasCallStack => TCvSubst -> Type -> Type
substTy TCvSubst
subst Type
ty
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = Type
ty
| Bool
otherwise = TCvSubst -> [Type] -> [Coercion] -> Type -> Type
forall a.
HasCallStack =>
TCvSubst -> [Type] -> [Coercion] -> a -> a
checkValidSubst TCvSubst
subst [Type
ty] [] (Type -> Type) -> Type -> Type
forall a b. (a -> b) -> a -> b
$
TCvSubst -> Type -> Type
subst_ty TCvSubst
subst Type
ty
substTyUnchecked :: TCvSubst -> Type -> Type
substTyUnchecked :: TCvSubst -> Type -> Type
substTyUnchecked TCvSubst
subst Type
ty
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = Type
ty
| Bool
otherwise = TCvSubst -> Type -> Type
subst_ty TCvSubst
subst Type
ty
substScaledTy :: HasCallStack => TCvSubst -> Scaled Type -> Scaled Type
substScaledTy :: HasCallStack => TCvSubst -> Scaled Type -> Scaled Type
substScaledTy TCvSubst
subst Scaled Type
scaled_ty = (Type -> Type) -> Scaled Type -> Scaled Type
mapScaledType (HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy TCvSubst
subst) Scaled Type
scaled_ty
substScaledTyUnchecked :: HasCallStack => TCvSubst -> Scaled Type -> Scaled Type
substScaledTyUnchecked :: HasCallStack => TCvSubst -> Scaled Type -> Scaled Type
substScaledTyUnchecked TCvSubst
subst Scaled Type
scaled_ty = (Type -> Type) -> Scaled Type -> Scaled Type
mapScaledType (TCvSubst -> Type -> Type
substTyUnchecked TCvSubst
subst) Scaled Type
scaled_ty
substTys :: HasCallStack => TCvSubst -> [Type] -> [Type]
substTys :: HasCallStack => TCvSubst -> [Type] -> [Type]
substTys TCvSubst
subst [Type]
tys
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = [Type]
tys
| Bool
otherwise = TCvSubst -> [Type] -> [Coercion] -> [Type] -> [Type]
forall a.
HasCallStack =>
TCvSubst -> [Type] -> [Coercion] -> a -> a
checkValidSubst TCvSubst
subst [Type]
tys [] ([Type] -> [Type]) -> [Type] -> [Type]
forall a b. (a -> b) -> a -> b
$ (Type -> Type) -> [Type] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map (TCvSubst -> Type -> Type
subst_ty TCvSubst
subst) [Type]
tys
substScaledTys :: HasCallStack => TCvSubst -> [Scaled Type] -> [Scaled Type]
substScaledTys :: HasCallStack => TCvSubst -> [Scaled Type] -> [Scaled Type]
substScaledTys TCvSubst
subst [Scaled Type]
scaled_tys
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = [Scaled Type]
scaled_tys
| Bool
otherwise = TCvSubst -> [Type] -> [Coercion] -> [Scaled Type] -> [Scaled Type]
forall a.
HasCallStack =>
TCvSubst -> [Type] -> [Coercion] -> a -> a
checkValidSubst TCvSubst
subst ((Scaled Type -> Type) -> [Scaled Type] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map Scaled Type -> Type
forall a. Scaled a -> Type
scaledMult [Scaled Type]
scaled_tys [Type] -> [Type] -> [Type]
forall a. [a] -> [a] -> [a]
++ (Scaled Type -> Type) -> [Scaled Type] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map Scaled Type -> Type
forall a. Scaled a -> a
scaledThing [Scaled Type]
scaled_tys) [] ([Scaled Type] -> [Scaled Type]) -> [Scaled Type] -> [Scaled Type]
forall a b. (a -> b) -> a -> b
$
(Scaled Type -> Scaled Type) -> [Scaled Type] -> [Scaled Type]
forall a b. (a -> b) -> [a] -> [b]
map ((Type -> Type) -> Scaled Type -> Scaled Type
mapScaledType (TCvSubst -> Type -> Type
subst_ty TCvSubst
subst)) [Scaled Type]
scaled_tys
substTysUnchecked :: TCvSubst -> [Type] -> [Type]
substTysUnchecked :: TCvSubst -> [Type] -> [Type]
substTysUnchecked TCvSubst
subst [Type]
tys
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = [Type]
tys
| Bool
otherwise = (Type -> Type) -> [Type] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map (TCvSubst -> Type -> Type
subst_ty TCvSubst
subst) [Type]
tys
substScaledTysUnchecked :: TCvSubst -> [Scaled Type] -> [Scaled Type]
substScaledTysUnchecked :: TCvSubst -> [Scaled Type] -> [Scaled Type]
substScaledTysUnchecked TCvSubst
subst [Scaled Type]
tys
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = [Scaled Type]
tys
| Bool
otherwise = (Scaled Type -> Scaled Type) -> [Scaled Type] -> [Scaled Type]
forall a b. (a -> b) -> [a] -> [b]
map ((Type -> Type) -> Scaled Type -> Scaled Type
mapScaledType (TCvSubst -> Type -> Type
subst_ty TCvSubst
subst)) [Scaled Type]
tys
substTheta :: HasCallStack => TCvSubst -> ThetaType -> ThetaType
substTheta :: HasCallStack => TCvSubst -> [Type] -> [Type]
substTheta = HasCallStack => TCvSubst -> [Type] -> [Type]
TCvSubst -> [Type] -> [Type]
substTys
substThetaUnchecked :: TCvSubst -> ThetaType -> ThetaType
substThetaUnchecked :: TCvSubst -> [Type] -> [Type]
substThetaUnchecked = TCvSubst -> [Type] -> [Type]
substTysUnchecked
subst_ty :: TCvSubst -> Type -> Type
subst_ty :: TCvSubst -> Type -> Type
subst_ty TCvSubst
subst Type
ty
= Type -> Type
go Type
ty
where
go :: Type -> Type
go (TyVarTy Var
tv) = TCvSubst -> Var -> Type
substTyVar TCvSubst
subst Var
tv
go (AppTy Type
fun Type
arg) = (Type -> Type -> Type
mkAppTy (Type -> Type -> Type) -> Type -> Type -> Type
forall a b. (a -> b) -> a -> b
$! (Type -> Type
go Type
fun)) (Type -> Type) -> Type -> Type
forall a b. (a -> b) -> a -> b
$! (Type -> Type
go Type
arg)
go ty :: Type
ty@(TyConApp TyCon
tc []) = TyCon
tc TyCon -> Type -> Type
`seq` Type
ty
go (TyConApp TyCon
tc [Type]
tys) = (TyCon -> [Type] -> Type
mkTyConApp (TyCon -> [Type] -> Type) -> TyCon -> [Type] -> Type
forall a b. (a -> b) -> a -> b
$! TyCon
tc) ([Type] -> Type) -> [Type] -> Type
forall a b. (a -> b) -> a -> b
$! (Type -> Type) -> [Type] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
strictMap Type -> Type
go [Type]
tys
go ty :: Type
ty@(FunTy { ft_mult :: Type -> Type
ft_mult = Type
mult, ft_arg :: Type -> Type
ft_arg = Type
arg, ft_res :: Type -> Type
ft_res = Type
res })
= let !mult' :: Type
mult' = Type -> Type
go Type
mult
!arg' :: Type
arg' = Type -> Type
go Type
arg
!res' :: Type
res' = Type -> Type
go Type
res
in Type
ty { ft_mult :: Type
ft_mult = Type
mult', ft_arg :: Type
ft_arg = Type
arg', ft_res :: Type
ft_res = Type
res' }
go (ForAllTy (Bndr Var
tv ArgFlag
vis) Type
ty)
= case TCvSubst -> Var -> (TCvSubst, Var)
substVarBndrUnchecked TCvSubst
subst Var
tv of
(TCvSubst
subst', Var
tv') ->
(VarBndr Var ArgFlag -> Type -> Type
ForAllTy (VarBndr Var ArgFlag -> Type -> Type)
-> VarBndr Var ArgFlag -> Type -> Type
forall a b. (a -> b) -> a -> b
$! ((Var -> ArgFlag -> VarBndr Var ArgFlag
forall var argf. var -> argf -> VarBndr var argf
Bndr (Var -> ArgFlag -> VarBndr Var ArgFlag)
-> Var -> ArgFlag -> VarBndr Var ArgFlag
forall a b. (a -> b) -> a -> b
$! Var
tv') ArgFlag
vis)) (Type -> Type) -> Type -> Type
forall a b. (a -> b) -> a -> b
$!
(TCvSubst -> Type -> Type
subst_ty TCvSubst
subst' Type
ty)
go (LitTy TyLit
n) = TyLit -> Type
LitTy (TyLit -> Type) -> TyLit -> Type
forall a b. (a -> b) -> a -> b
$! TyLit
n
go (CastTy Type
ty Coercion
co) = (Type -> Coercion -> Type
mkCastTy (Type -> Coercion -> Type) -> Type -> Coercion -> Type
forall a b. (a -> b) -> a -> b
$! (Type -> Type
go Type
ty)) (Coercion -> Type) -> Coercion -> Type
forall a b. (a -> b) -> a -> b
$! (TCvSubst -> Coercion -> Coercion
subst_co TCvSubst
subst Coercion
co)
go (CoercionTy Coercion
co) = Coercion -> Type
CoercionTy (Coercion -> Type) -> Coercion -> Type
forall a b. (a -> b) -> a -> b
$! (TCvSubst -> Coercion -> Coercion
subst_co TCvSubst
subst Coercion
co)
substTyVar :: TCvSubst -> TyVar -> Type
substTyVar :: TCvSubst -> Var -> Type
substTyVar (TCvSubst InScopeSet
_ TvSubstEnv
tenv CvSubstEnv
_) Var
tv
= ASSERT( isTyVar tv )
case TvSubstEnv -> Var -> Maybe Type
forall a. VarEnv a -> Var -> Maybe a
lookupVarEnv TvSubstEnv
tenv Var
tv of
Just Type
ty -> Type
ty
Maybe Type
Nothing -> Var -> Type
TyVarTy Var
tv
substTyVars :: TCvSubst -> [TyVar] -> [Type]
substTyVars :: TCvSubst -> [Var] -> [Type]
substTyVars TCvSubst
subst = (Var -> Type) -> [Var] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map ((Var -> Type) -> [Var] -> [Type])
-> (Var -> Type) -> [Var] -> [Type]
forall a b. (a -> b) -> a -> b
$ TCvSubst -> Var -> Type
substTyVar TCvSubst
subst
substTyCoVars :: TCvSubst -> [TyCoVar] -> [Type]
substTyCoVars :: TCvSubst -> [Var] -> [Type]
substTyCoVars TCvSubst
subst = (Var -> Type) -> [Var] -> [Type]
forall a b. (a -> b) -> [a] -> [b]
map ((Var -> Type) -> [Var] -> [Type])
-> (Var -> Type) -> [Var] -> [Type]
forall a b. (a -> b) -> a -> b
$ TCvSubst -> Var -> Type
substTyCoVar TCvSubst
subst
substTyCoVar :: TCvSubst -> TyCoVar -> Type
substTyCoVar :: TCvSubst -> Var -> Type
substTyCoVar TCvSubst
subst Var
tv
| Var -> Bool
isTyVar Var
tv = TCvSubst -> Var -> Type
substTyVar TCvSubst
subst Var
tv
| Bool
otherwise = Coercion -> Type
CoercionTy (Coercion -> Type) -> Coercion -> Type
forall a b. (a -> b) -> a -> b
$ TCvSubst -> Var -> Coercion
substCoVar TCvSubst
subst Var
tv
lookupTyVar :: TCvSubst -> TyVar -> Maybe Type
lookupTyVar :: TCvSubst -> Var -> Maybe Type
lookupTyVar (TCvSubst InScopeSet
_ TvSubstEnv
tenv CvSubstEnv
_) Var
tv
= ASSERT( isTyVar tv )
TvSubstEnv -> Var -> Maybe Type
forall a. VarEnv a -> Var -> Maybe a
lookupVarEnv TvSubstEnv
tenv Var
tv
substCo :: HasCallStack => TCvSubst -> Coercion -> Coercion
substCo :: HasCallStack => TCvSubst -> Coercion -> Coercion
substCo TCvSubst
subst Coercion
co
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = Coercion
co
| Bool
otherwise = TCvSubst -> [Type] -> [Coercion] -> Coercion -> Coercion
forall a.
HasCallStack =>
TCvSubst -> [Type] -> [Coercion] -> a -> a
checkValidSubst TCvSubst
subst [] [Coercion
co] (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$ TCvSubst -> Coercion -> Coercion
subst_co TCvSubst
subst Coercion
co
substCoUnchecked :: TCvSubst -> Coercion -> Coercion
substCoUnchecked :: TCvSubst -> Coercion -> Coercion
substCoUnchecked TCvSubst
subst Coercion
co
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = Coercion
co
| Bool
otherwise = TCvSubst -> Coercion -> Coercion
subst_co TCvSubst
subst Coercion
co
substCos :: HasCallStack => TCvSubst -> [Coercion] -> [Coercion]
substCos :: HasCallStack => TCvSubst -> [Coercion] -> [Coercion]
substCos TCvSubst
subst [Coercion]
cos
| TCvSubst -> Bool
isEmptyTCvSubst TCvSubst
subst = [Coercion]
cos
| Bool
otherwise = TCvSubst -> [Type] -> [Coercion] -> [Coercion] -> [Coercion]
forall a.
HasCallStack =>
TCvSubst -> [Type] -> [Coercion] -> a -> a
checkValidSubst TCvSubst
subst [] [Coercion]
cos ([Coercion] -> [Coercion]) -> [Coercion] -> [Coercion]
forall a b. (a -> b) -> a -> b
$ (Coercion -> Coercion) -> [Coercion] -> [Coercion]
forall a b. (a -> b) -> [a] -> [b]
map (TCvSubst -> Coercion -> Coercion
subst_co TCvSubst
subst) [Coercion]
cos
subst_co :: TCvSubst -> Coercion -> Coercion
subst_co :: TCvSubst -> Coercion -> Coercion
subst_co TCvSubst
subst Coercion
co
= Coercion -> Coercion
go Coercion
co
where
go_ty :: Type -> Type
go_ty :: Type -> Type
go_ty = TCvSubst -> Type -> Type
subst_ty TCvSubst
subst
go_mco :: MCoercion -> MCoercion
go_mco :: MCoercion -> MCoercion
go_mco MCoercion
MRefl = MCoercion
MRefl
go_mco (MCo Coercion
co) = Coercion -> MCoercion
MCo (Coercion -> Coercion
go Coercion
co)
go :: Coercion -> Coercion
go :: Coercion -> Coercion
go (Refl Type
ty) = Type -> Coercion
mkNomReflCo (Type -> Coercion) -> Type -> Coercion
forall a b. (a -> b) -> a -> b
$! (Type -> Type
go_ty Type
ty)
go (GRefl Role
r Type
ty MCoercion
mco) = (Role -> Type -> MCoercion -> Coercion
mkGReflCo Role
r (Type -> MCoercion -> Coercion) -> Type -> MCoercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Type -> Type
go_ty Type
ty)) (MCoercion -> Coercion) -> MCoercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (MCoercion -> MCoercion
go_mco MCoercion
mco)
go (TyConAppCo Role
r TyCon
tc [Coercion]
args)= let args' :: [Coercion]
args' = (Coercion -> Coercion) -> [Coercion] -> [Coercion]
forall a b. (a -> b) -> [a] -> [b]
map Coercion -> Coercion
go [Coercion]
args
in [Coercion]
args' [Coercion] -> Coercion -> Coercion
forall a b. [a] -> b -> b
`seqList` HasDebugCallStack => Role -> TyCon -> [Coercion] -> Coercion
Role -> TyCon -> [Coercion] -> Coercion
mkTyConAppCo Role
r TyCon
tc [Coercion]
args'
go (AppCo Coercion
co Coercion
arg) = (Coercion -> Coercion -> Coercion
mkAppCo (Coercion -> Coercion -> Coercion)
-> Coercion -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Coercion -> Coercion
go Coercion
co) (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Coercion -> Coercion
go Coercion
arg
go (ForAllCo Var
tv Coercion
kind_co Coercion
co)
= case TCvSubst -> Var -> Coercion -> (TCvSubst, Var, Coercion)
substForAllCoBndrUnchecked TCvSubst
subst Var
tv Coercion
kind_co of
(TCvSubst
subst', Var
tv', Coercion
kind_co') ->
((Var -> Coercion -> Coercion -> Coercion
mkForAllCo (Var -> Coercion -> Coercion -> Coercion)
-> Var -> Coercion -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Var
tv') (Coercion -> Coercion -> Coercion)
-> Coercion -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Coercion
kind_co') (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! TCvSubst -> Coercion -> Coercion
subst_co TCvSubst
subst' Coercion
co
go (FunCo Role
r Coercion
w Coercion
co1 Coercion
co2) = ((Role -> Coercion -> Coercion -> Coercion -> Coercion
mkFunCo Role
r (Coercion -> Coercion -> Coercion -> Coercion)
-> Coercion -> Coercion -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Coercion -> Coercion
go Coercion
w) (Coercion -> Coercion -> Coercion)
-> Coercion -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Coercion -> Coercion
go Coercion
co1) (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Coercion -> Coercion
go Coercion
co2
go (CoVarCo Var
cv) = TCvSubst -> Var -> Coercion
substCoVar TCvSubst
subst Var
cv
go (AxiomInstCo CoAxiom Branched
con Int
ind [Coercion]
cos) = CoAxiom Branched -> Int -> [Coercion] -> Coercion
mkAxiomInstCo CoAxiom Branched
con Int
ind ([Coercion] -> Coercion) -> [Coercion] -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion) -> [Coercion] -> [Coercion]
forall a b. (a -> b) -> [a] -> [b]
map Coercion -> Coercion
go [Coercion]
cos
go (UnivCo UnivCoProvenance
p Role
r Type
t1 Type
t2) = (((UnivCoProvenance -> Role -> Type -> Type -> Coercion
mkUnivCo (UnivCoProvenance -> Role -> Type -> Type -> Coercion)
-> UnivCoProvenance -> Role -> Type -> Type -> Coercion
forall a b. (a -> b) -> a -> b
$! UnivCoProvenance -> UnivCoProvenance
go_prov UnivCoProvenance
p) (Role -> Type -> Type -> Coercion)
-> Role -> Type -> Type -> Coercion
forall a b. (a -> b) -> a -> b
$! Role
r) (Type -> Type -> Coercion) -> Type -> Type -> Coercion
forall a b. (a -> b) -> a -> b
$!
(Type -> Type
go_ty Type
t1)) (Type -> Coercion) -> Type -> Coercion
forall a b. (a -> b) -> a -> b
$! (Type -> Type
go_ty Type
t2)
go (SymCo Coercion
co) = Coercion -> Coercion
mkSymCo (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co)
go (TransCo Coercion
co1 Coercion
co2) = (Coercion -> Coercion -> Coercion
mkTransCo (Coercion -> Coercion -> Coercion)
-> Coercion -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co1)) (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co2)
go (NthCo Role
r Int
d Coercion
co) = HasDebugCallStack => Role -> Int -> Coercion -> Coercion
Role -> Int -> Coercion -> Coercion
mkNthCo Role
r Int
d (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co)
go (LRCo LeftOrRight
lr Coercion
co) = LeftOrRight -> Coercion -> Coercion
mkLRCo LeftOrRight
lr (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co)
go (InstCo Coercion
co Coercion
arg) = (Coercion -> Coercion -> Coercion
mkInstCo (Coercion -> Coercion -> Coercion)
-> Coercion -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co)) (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! Coercion -> Coercion
go Coercion
arg
go (KindCo Coercion
co) = Coercion -> Coercion
mkKindCo (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co)
go (SubCo Coercion
co) = HasDebugCallStack => Coercion -> Coercion
Coercion -> Coercion
mkSubCo (Coercion -> Coercion) -> Coercion -> Coercion
forall a b. (a -> b) -> a -> b
$! (Coercion -> Coercion
go Coercion
co)
go (AxiomRuleCo CoAxiomRule
c [Coercion]
cs) = let cs1 :: [Coercion]
cs1 = (Coercion -> Coercion) -> [Coercion] -> [Coercion]
forall a b. (a -> b) -> [a] -> [b]
map Coercion -> Coercion
go [Coercion]
cs
in [Coercion]
cs1 [Coercion] -> Coercion -> Coercion
forall a b. [a] -> b -> b
`seqList` CoAxiomRule -> [Coercion] -> Coercion
AxiomRuleCo CoAxiomRule
c [Coercion]
cs1
go (HoleCo CoercionHole
h) = CoercionHole -> Coercion
HoleCo (CoercionHole -> Coercion) -> CoercionHole -> Coercion
forall a b. (a -> b) -> a -> b
$! CoercionHole -> CoercionHole
go_hole CoercionHole
h
go_prov :: UnivCoProvenance -> UnivCoProvenance
go_prov (PhantomProv Coercion
kco) = Coercion -> UnivCoProvenance
PhantomProv (Coercion -> Coercion
go Coercion
kco)
go_prov (ProofIrrelProv Coercion
kco) = Coercion -> UnivCoProvenance
ProofIrrelProv (Coercion -> Coercion
go Coercion
kco)
go_prov p :: UnivCoProvenance
p@(PluginProv String
_) = UnivCoProvenance
p
go_prov p :: UnivCoProvenance
p@UnivCoProvenance
CorePrepProv = UnivCoProvenance
p
go_hole :: CoercionHole -> CoercionHole
go_hole h :: CoercionHole
h@(CoercionHole { ch_co_var :: CoercionHole -> Var
ch_co_var = Var
cv })
= CoercionHole
h { ch_co_var :: Var
ch_co_var = (Type -> Type) -> Var -> Var
updateVarType Type -> Type
go_ty Var
cv }
substForAllCoBndr :: TCvSubst -> TyCoVar -> KindCoercion
-> (TCvSubst, TyCoVar, Coercion)
substForAllCoBndr :: TCvSubst -> Var -> Coercion -> (TCvSubst, Var, Coercion)
substForAllCoBndr TCvSubst
subst
= Bool
-> (Coercion -> Coercion)
-> TCvSubst
-> Var
-> Coercion
-> (TCvSubst, Var, Coercion)
substForAllCoBndrUsing Bool
False (HasCallStack => TCvSubst -> Coercion -> Coercion
TCvSubst -> Coercion -> Coercion
substCo TCvSubst
subst) TCvSubst
subst
substForAllCoBndrUnchecked :: TCvSubst -> TyCoVar -> KindCoercion
-> (TCvSubst, TyCoVar, Coercion)
substForAllCoBndrUnchecked :: TCvSubst -> Var -> Coercion -> (TCvSubst, Var, Coercion)
substForAllCoBndrUnchecked TCvSubst
subst
= Bool
-> (Coercion -> Coercion)
-> TCvSubst
-> Var
-> Coercion
-> (TCvSubst, Var, Coercion)
substForAllCoBndrUsing Bool
False (TCvSubst -> Coercion -> Coercion
substCoUnchecked TCvSubst
subst) TCvSubst
subst
substForAllCoBndrUsing :: Bool
-> (Coercion -> Coercion)
-> TCvSubst -> TyCoVar -> KindCoercion
-> (TCvSubst, TyCoVar, KindCoercion)
substForAllCoBndrUsing :: Bool
-> (Coercion -> Coercion)
-> TCvSubst
-> Var
-> Coercion
-> (TCvSubst, Var, Coercion)
substForAllCoBndrUsing Bool
sym Coercion -> Coercion
sco TCvSubst
subst Var
old_var
| Var -> Bool
isTyVar Var
old_var = Bool
-> (Coercion -> Coercion)
-> TCvSubst
-> Var
-> Coercion
-> (TCvSubst, Var, Coercion)
substForAllCoTyVarBndrUsing Bool
sym Coercion -> Coercion
sco TCvSubst
subst Var
old_var
| Bool
otherwise = Bool
-> (Coercion -> Coercion)
-> TCvSubst
-> Var
-> Coercion
-> (TCvSubst, Var, Coercion)
substForAllCoCoVarBndrUsing Bool
sym Coercion -> Coercion
sco TCvSubst
subst Var
old_var
substForAllCoTyVarBndrUsing :: Bool
-> (Coercion -> Coercion)
-> TCvSubst -> TyVar -> KindCoercion
-> (TCvSubst, TyVar, KindCoercion)
substForAllCoTyVarBndrUsing :: Bool
-> (Coercion -> Coercion)
-> TCvSubst
-> Var
-> Coercion
-> (TCvSubst, Var, Coercion)
substForAllCoTyVarBndrUsing Bool
sym Coercion -> Coercion
sco (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
old_var Coercion
old_kind_co
= ASSERT( isTyVar old_var )
( InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet
in_scope InScopeSet -> Var -> InScopeSet
`extendInScopeSet` Var
new_var) TvSubstEnv
new_env CvSubstEnv
cenv
, Var
new_var, Coercion
new_kind_co )
where
new_env :: TvSubstEnv
new_env | Bool
no_change Bool -> Bool -> Bool
&& Bool -> Bool
not Bool
sym = TvSubstEnv -> Var -> TvSubstEnv
forall a. VarEnv a -> Var -> VarEnv a
delVarEnv TvSubstEnv
tenv Var
old_var
| Bool
sym = TvSubstEnv -> Var -> Type -> TvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv TvSubstEnv
tenv Var
old_var (Type -> TvSubstEnv) -> Type -> TvSubstEnv
forall a b. (a -> b) -> a -> b
$
Var -> Type
TyVarTy Var
new_var Type -> Coercion -> Type
`CastTy` Coercion
new_kind_co
| Bool
otherwise = TvSubstEnv -> Var -> Type -> TvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv TvSubstEnv
tenv Var
old_var (Var -> Type
TyVarTy Var
new_var)
no_kind_change :: Bool
no_kind_change = Coercion -> Bool
noFreeVarsOfCo Coercion
old_kind_co
no_change :: Bool
no_change = Bool
no_kind_change Bool -> Bool -> Bool
&& (Var
new_var Var -> Var -> Bool
forall a. Eq a => a -> a -> Bool
== Var
old_var)
new_kind_co :: Coercion
new_kind_co | Bool
no_kind_change = Coercion
old_kind_co
| Bool
otherwise = Coercion -> Coercion
sco Coercion
old_kind_co
new_ki1 :: Type
new_ki1 = Coercion -> Type
coercionLKind Coercion
new_kind_co
new_var :: Var
new_var = InScopeSet -> Var -> Var
uniqAway InScopeSet
in_scope (Var -> Type -> Var
setTyVarKind Var
old_var Type
new_ki1)
substForAllCoCoVarBndrUsing :: Bool
-> (Coercion -> Coercion)
-> TCvSubst -> CoVar -> KindCoercion
-> (TCvSubst, CoVar, KindCoercion)
substForAllCoCoVarBndrUsing :: Bool
-> (Coercion -> Coercion)
-> TCvSubst
-> Var
-> Coercion
-> (TCvSubst, Var, Coercion)
substForAllCoCoVarBndrUsing Bool
sym Coercion -> Coercion
sco (TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv)
Var
old_var Coercion
old_kind_co
= ASSERT( isCoVar old_var )
( InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet
in_scope InScopeSet -> Var -> InScopeSet
`extendInScopeSet` Var
new_var) TvSubstEnv
tenv CvSubstEnv
new_cenv
, Var
new_var, Coercion
new_kind_co )
where
new_cenv :: CvSubstEnv
new_cenv | Bool
no_change Bool -> Bool -> Bool
&& Bool -> Bool
not Bool
sym = CvSubstEnv -> Var -> CvSubstEnv
forall a. VarEnv a -> Var -> VarEnv a
delVarEnv CvSubstEnv
cenv Var
old_var
| Bool
otherwise = CvSubstEnv -> Var -> Coercion -> CvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv CvSubstEnv
cenv Var
old_var (Var -> Coercion
mkCoVarCo Var
new_var)
no_kind_change :: Bool
no_kind_change = Coercion -> Bool
noFreeVarsOfCo Coercion
old_kind_co
no_change :: Bool
no_change = Bool
no_kind_change Bool -> Bool -> Bool
&& (Var
new_var Var -> Var -> Bool
forall a. Eq a => a -> a -> Bool
== Var
old_var)
new_kind_co :: Coercion
new_kind_co | Bool
no_kind_change = Coercion
old_kind_co
| Bool
otherwise = Coercion -> Coercion
sco Coercion
old_kind_co
Pair Type
h1 Type
h2 = Coercion -> Pair Type
coercionKind Coercion
new_kind_co
new_var :: Var
new_var = InScopeSet -> Var -> Var
uniqAway InScopeSet
in_scope (Var -> Var) -> Var -> Var
forall a b. (a -> b) -> a -> b
$ Name -> Type -> Var
mkCoVar (Var -> Name
varName Var
old_var) Type
new_var_type
new_var_type :: Type
new_var_type | Bool
sym = Type
h2
| Bool
otherwise = Type
h1
substCoVar :: TCvSubst -> CoVar -> Coercion
substCoVar :: TCvSubst -> Var -> Coercion
substCoVar (TCvSubst InScopeSet
_ TvSubstEnv
_ CvSubstEnv
cenv) Var
cv
= case CvSubstEnv -> Var -> Maybe Coercion
forall a. VarEnv a -> Var -> Maybe a
lookupVarEnv CvSubstEnv
cenv Var
cv of
Just Coercion
co -> Coercion
co
Maybe Coercion
Nothing -> Var -> Coercion
CoVarCo Var
cv
substCoVars :: TCvSubst -> [CoVar] -> [Coercion]
substCoVars :: TCvSubst -> [Var] -> [Coercion]
substCoVars TCvSubst
subst [Var]
cvs = (Var -> Coercion) -> [Var] -> [Coercion]
forall a b. (a -> b) -> [a] -> [b]
map (TCvSubst -> Var -> Coercion
substCoVar TCvSubst
subst) [Var]
cvs
lookupCoVar :: TCvSubst -> Var -> Maybe Coercion
lookupCoVar :: TCvSubst -> Var -> Maybe Coercion
lookupCoVar (TCvSubst InScopeSet
_ TvSubstEnv
_ CvSubstEnv
cenv) Var
v = CvSubstEnv -> Var -> Maybe Coercion
forall a. VarEnv a -> Var -> Maybe a
lookupVarEnv CvSubstEnv
cenv Var
v
substTyVarBndr :: HasCallStack => TCvSubst -> TyVar -> (TCvSubst, TyVar)
substTyVarBndr :: HasCallStack => TCvSubst -> Var -> (TCvSubst, Var)
substTyVarBndr = (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substTyVarBndrUsing HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy
substTyVarBndrs :: HasCallStack => TCvSubst -> [TyVar] -> (TCvSubst, [TyVar])
substTyVarBndrs :: HasCallStack => TCvSubst -> [Var] -> (TCvSubst, [Var])
substTyVarBndrs = (TCvSubst -> Var -> (TCvSubst, Var))
-> TCvSubst -> [Var] -> (TCvSubst, [Var])
forall (t :: * -> *) s a b.
Traversable t =>
(s -> a -> (s, b)) -> s -> t a -> (s, t b)
mapAccumL HasCallStack => TCvSubst -> Var -> (TCvSubst, Var)
TCvSubst -> Var -> (TCvSubst, Var)
substTyVarBndr
substVarBndr :: HasCallStack => TCvSubst -> TyCoVar -> (TCvSubst, TyCoVar)
substVarBndr :: HasCallStack => TCvSubst -> Var -> (TCvSubst, Var)
substVarBndr = (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substVarBndrUsing HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy
substVarBndrs :: HasCallStack => TCvSubst -> [TyCoVar] -> (TCvSubst, [TyCoVar])
substVarBndrs :: HasCallStack => TCvSubst -> [Var] -> (TCvSubst, [Var])
substVarBndrs = (TCvSubst -> Var -> (TCvSubst, Var))
-> TCvSubst -> [Var] -> (TCvSubst, [Var])
forall (t :: * -> *) s a b.
Traversable t =>
(s -> a -> (s, b)) -> s -> t a -> (s, t b)
mapAccumL HasCallStack => TCvSubst -> Var -> (TCvSubst, Var)
TCvSubst -> Var -> (TCvSubst, Var)
substVarBndr
substCoVarBndr :: HasCallStack => TCvSubst -> CoVar -> (TCvSubst, CoVar)
substCoVarBndr :: HasCallStack => TCvSubst -> Var -> (TCvSubst, Var)
substCoVarBndr = (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substCoVarBndrUsing HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy
substVarBndrUnchecked :: TCvSubst -> TyCoVar -> (TCvSubst, TyCoVar)
substVarBndrUnchecked :: TCvSubst -> Var -> (TCvSubst, Var)
substVarBndrUnchecked = (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substVarBndrUsing TCvSubst -> Type -> Type
substTyUnchecked
substVarBndrUsing :: (TCvSubst -> Type -> Type)
-> TCvSubst -> TyCoVar -> (TCvSubst, TyCoVar)
substVarBndrUsing :: (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substVarBndrUsing TCvSubst -> Type -> Type
subst_fn TCvSubst
subst Var
v
| Var -> Bool
isTyVar Var
v = (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substTyVarBndrUsing TCvSubst -> Type -> Type
subst_fn TCvSubst
subst Var
v
| Bool
otherwise = (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substCoVarBndrUsing TCvSubst -> Type -> Type
subst_fn TCvSubst
subst Var
v
substTyVarBndrUsing
:: (TCvSubst -> Type -> Type)
-> TCvSubst -> TyVar -> (TCvSubst, TyVar)
substTyVarBndrUsing :: (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substTyVarBndrUsing TCvSubst -> Type -> Type
subst_fn subst :: TCvSubst
subst@(TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
old_var
= ASSERT2( _no_capture, pprTyVar old_var $$ pprTyVar new_var $$ ppr subst )
ASSERT( isTyVar old_var )
(InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet
in_scope InScopeSet -> Var -> InScopeSet
`extendInScopeSet` Var
new_var) TvSubstEnv
new_env CvSubstEnv
cenv, Var
new_var)
where
new_env :: TvSubstEnv
new_env | Bool
no_change = TvSubstEnv -> Var -> TvSubstEnv
forall a. VarEnv a -> Var -> VarEnv a
delVarEnv TvSubstEnv
tenv Var
old_var
| Bool
otherwise = TvSubstEnv -> Var -> Type -> TvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv TvSubstEnv
tenv Var
old_var (Var -> Type
TyVarTy Var
new_var)
_no_capture :: Bool
_no_capture = Bool -> Bool
not (Var
new_var Var -> VarSet -> Bool
`elemVarSet` TvSubstEnv -> VarSet
shallowTyCoVarsOfTyVarEnv TvSubstEnv
tenv)
old_ki :: Type
old_ki = Var -> Type
tyVarKind Var
old_var
no_kind_change :: Bool
no_kind_change = Type -> Bool
noFreeVarsOfType Type
old_ki
no_change :: Bool
no_change = Bool
no_kind_change Bool -> Bool -> Bool
&& (Var
new_var Var -> Var -> Bool
forall a. Eq a => a -> a -> Bool
== Var
old_var)
new_var :: Var
new_var | Bool
no_kind_change = InScopeSet -> Var -> Var
uniqAway InScopeSet
in_scope Var
old_var
| Bool
otherwise = InScopeSet -> Var -> Var
uniqAway InScopeSet
in_scope (Var -> Var) -> Var -> Var
forall a b. (a -> b) -> a -> b
$
Var -> Type -> Var
setTyVarKind Var
old_var (TCvSubst -> Type -> Type
subst_fn TCvSubst
subst Type
old_ki)
substCoVarBndrUsing
:: (TCvSubst -> Type -> Type)
-> TCvSubst -> CoVar -> (TCvSubst, CoVar)
substCoVarBndrUsing :: (TCvSubst -> Type -> Type) -> TCvSubst -> Var -> (TCvSubst, Var)
substCoVarBndrUsing TCvSubst -> Type -> Type
subst_fn subst :: TCvSubst
subst@(TCvSubst InScopeSet
in_scope TvSubstEnv
tenv CvSubstEnv
cenv) Var
old_var
= ASSERT( isCoVar old_var )
(InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet
in_scope InScopeSet -> Var -> InScopeSet
`extendInScopeSet` Var
new_var) TvSubstEnv
tenv CvSubstEnv
new_cenv, Var
new_var)
where
new_co :: Coercion
new_co = Var -> Coercion
mkCoVarCo Var
new_var
no_kind_change :: Bool
no_kind_change = [Type] -> Bool
noFreeVarsOfTypes [Type
t1, Type
t2]
no_change :: Bool
no_change = Var
new_var Var -> Var -> Bool
forall a. Eq a => a -> a -> Bool
== Var
old_var Bool -> Bool -> Bool
&& Bool
no_kind_change
new_cenv :: CvSubstEnv
new_cenv | Bool
no_change = CvSubstEnv -> Var -> CvSubstEnv
forall a. VarEnv a -> Var -> VarEnv a
delVarEnv CvSubstEnv
cenv Var
old_var
| Bool
otherwise = CvSubstEnv -> Var -> Coercion -> CvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv CvSubstEnv
cenv Var
old_var Coercion
new_co
new_var :: Var
new_var = InScopeSet -> Var -> Var
uniqAway InScopeSet
in_scope Var
subst_old_var
subst_old_var :: Var
subst_old_var = Name -> Type -> Var
mkCoVar (Var -> Name
varName Var
old_var) Type
new_var_type
(Type
_, Type
_, Type
t1, Type
t2, Role
role) = HasDebugCallStack => Var -> (Type, Type, Type, Type, Role)
Var -> (Type, Type, Type, Type, Role)
coVarKindsTypesRole Var
old_var
t1' :: Type
t1' = TCvSubst -> Type -> Type
subst_fn TCvSubst
subst Type
t1
t2' :: Type
t2' = TCvSubst -> Type -> Type
subst_fn TCvSubst
subst Type
t2
new_var_type :: Type
new_var_type = Role -> Type -> Type -> Type
mkCoercionType Role
role Type
t1' Type
t2'
cloneTyVarBndr :: TCvSubst -> TyVar -> Unique -> (TCvSubst, TyVar)
cloneTyVarBndr :: TCvSubst -> Var -> Unique -> (TCvSubst, Var)
cloneTyVarBndr subst :: TCvSubst
subst@(TCvSubst InScopeSet
in_scope TvSubstEnv
tv_env CvSubstEnv
cv_env) Var
tv Unique
uniq
= ASSERT2( isTyVar tv, ppr tv )
(InScopeSet -> TvSubstEnv -> CvSubstEnv -> TCvSubst
TCvSubst (InScopeSet -> Var -> InScopeSet
extendInScopeSet InScopeSet
in_scope Var
tv')
(TvSubstEnv -> Var -> Type -> TvSubstEnv
forall a. VarEnv a -> Var -> a -> VarEnv a
extendVarEnv TvSubstEnv
tv_env Var
tv (Var -> Type
mkTyVarTy Var
tv')) CvSubstEnv
cv_env, Var
tv')
where
old_ki :: Type
old_ki = Var -> Type
tyVarKind Var
tv
no_kind_change :: Bool
no_kind_change = Type -> Bool
noFreeVarsOfType Type
old_ki
tv1 :: Var
tv1 | Bool
no_kind_change = Var
tv
| Bool
otherwise = Var -> Type -> Var
setTyVarKind Var
tv (HasCallStack => TCvSubst -> Type -> Type
TCvSubst -> Type -> Type
substTy TCvSubst
subst Type
old_ki)
tv' :: Var
tv' = Var -> Unique -> Var
setVarUnique Var
tv1 Unique
uniq
cloneTyVarBndrs :: TCvSubst -> [TyVar] -> UniqSupply -> (TCvSubst, [TyVar])
cloneTyVarBndrs :: TCvSubst -> [Var] -> UniqSupply -> (TCvSubst, [Var])
cloneTyVarBndrs TCvSubst
subst [] UniqSupply
_usupply = (TCvSubst
subst, [])
cloneTyVarBndrs TCvSubst
subst (Var
t:[Var]
ts) UniqSupply
usupply = (TCvSubst
subst'', Var
tvVar -> [Var] -> [Var]
forall a. a -> [a] -> [a]
:[Var]
tvs)
where
(Unique
uniq, UniqSupply
usupply') = UniqSupply -> (Unique, UniqSupply)
takeUniqFromSupply UniqSupply
usupply
(TCvSubst
subst' , Var
tv ) = TCvSubst -> Var -> Unique -> (TCvSubst, Var)
cloneTyVarBndr TCvSubst
subst Var
t Unique
uniq
(TCvSubst
subst'', [Var]
tvs) = TCvSubst -> [Var] -> UniqSupply -> (TCvSubst, [Var])
cloneTyVarBndrs TCvSubst
subst' [Var]
ts UniqSupply
usupply'
substTyCoBndr :: TCvSubst -> TyCoBinder -> (TCvSubst, TyCoBinder)
substTyCoBndr :: TCvSubst -> TyCoBinder -> (TCvSubst, TyCoBinder)
substTyCoBndr TCvSubst
subst (Anon AnonArgFlag
af Scaled Type
ty) = (TCvSubst
subst, AnonArgFlag -> Scaled Type -> TyCoBinder
Anon AnonArgFlag
af (HasCallStack => TCvSubst -> Scaled Type -> Scaled Type
TCvSubst -> Scaled Type -> Scaled Type
substScaledTy TCvSubst
subst Scaled Type
ty))
substTyCoBndr TCvSubst
subst (Named (Bndr Var
tv ArgFlag
vis)) = (TCvSubst
subst', VarBndr Var ArgFlag -> TyCoBinder
Named (Var -> ArgFlag -> VarBndr Var ArgFlag
forall var argf. var -> argf -> VarBndr var argf
Bndr Var
tv' ArgFlag
vis))
where
(TCvSubst
subst', Var
tv') = HasCallStack => TCvSubst -> Var -> (TCvSubst, Var)
TCvSubst -> Var -> (TCvSubst, Var)
substVarBndr TCvSubst
subst Var
tv