Safe Haskell	Safe-Inferred
Language	Haskell2010

GHC.Tc.Types.Evidence

Contents

HsWrapper
Evidence bindings
EvTerm (already a CoreExpr)
HoleExprRef
TcCoercion
QuoteWrapper

Synopsis

data HsWrapper
- = WpHole
- | WpCompose HsWrapper HsWrapper
- | WpFun HsWrapper HsWrapper (Scaled TcType) SDoc
- | WpCast TcCoercionR
- | WpEvLam EvVar
- | WpEvApp EvTerm
- | WpTyLam TyVar
- | WpTyApp KindOrType
- | WpLet TcEvBinds
- | WpMultCoercion Coercion
(<.>) :: HsWrapper -> HsWrapper -> HsWrapper
mkWpTyApps :: [Type] -> HsWrapper
mkWpEvApps :: [EvTerm] -> HsWrapper
mkWpEvVarApps :: [EvVar] -> HsWrapper
mkWpTyLams :: [TyVar] -> HsWrapper
mkWpLams :: [Var] -> HsWrapper
mkWpLet :: TcEvBinds -> HsWrapper
mkWpCastN :: TcCoercionN -> HsWrapper
mkWpCastR :: TcCoercionR -> HsWrapper
collectHsWrapBinders :: HsWrapper -> ([Var], HsWrapper)
mkWpFun :: HsWrapper -> HsWrapper -> Scaled TcType -> TcType -> SDoc -> HsWrapper
idHsWrapper :: HsWrapper
isIdHsWrapper :: HsWrapper -> Bool
pprHsWrapper :: HsWrapper -> (Bool -> SDoc) -> SDoc
hsWrapDictBinders :: HsWrapper -> Bag DictId
data TcEvBinds
- = TcEvBinds EvBindsVar
- | EvBinds (Bag EvBind)
data EvBindsVar
- = EvBindsVar {
  - ebv_uniq :: Unique
  - ebv_binds :: IORef EvBindMap
  - ebv_tcvs :: IORef CoVarSet
  }
- | CoEvBindsVar {
  - ebv_uniq :: Unique
  - ebv_tcvs :: IORef CoVarSet
  }
newtype EvBindMap = EvBindMap {
- ev_bind_varenv :: DVarEnv EvBind
}
emptyEvBindMap :: EvBindMap
extendEvBinds :: EvBindMap -> EvBind -> EvBindMap
lookupEvBind :: EvBindMap -> EvVar -> Maybe EvBind
evBindMapBinds :: EvBindMap -> Bag EvBind
foldEvBindMap :: (EvBind -> a -> a) -> a -> EvBindMap -> a
nonDetStrictFoldEvBindMap :: (EvBind -> a -> a) -> a -> EvBindMap -> a
filterEvBindMap :: (EvBind -> Bool) -> EvBindMap -> EvBindMap
isEmptyEvBindMap :: EvBindMap -> Bool
evBindMapToVarSet :: EvBindMap -> VarSet
varSetMinusEvBindMap :: VarSet -> EvBindMap -> VarSet
data EvBind = EvBind {
- eb_lhs :: EvVar
- eb_rhs :: EvTerm
- eb_is_given :: Bool
}
emptyTcEvBinds :: TcEvBinds
isEmptyTcEvBinds :: TcEvBinds -> Bool
mkGivenEvBind :: EvVar -> EvTerm -> EvBind
mkWantedEvBind :: EvVar -> EvTerm -> EvBind
evBindVar :: EvBind -> EvVar
isCoEvBindsVar :: EvBindsVar -> Bool
data EvTerm
- = EvExpr EvExpr
- | EvTypeable Type EvTypeable
- | EvFun {
  - et_tvs :: [TyVar]
  - et_given :: [EvVar]
  - et_binds :: TcEvBinds
  - et_body :: EvVar
  }
type EvExpr = CoreExpr
evId :: EvId -> EvExpr
evCoercion :: TcCoercion -> EvTerm
evCast :: EvExpr -> TcCoercion -> EvTerm
evDFunApp :: DFunId -> [Type] -> [EvExpr] -> EvTerm
evDataConApp :: DataCon -> [Type] -> [EvExpr] -> EvTerm
evSelector :: Id -> [Type] -> [EvExpr] -> EvExpr
mkEvCast :: EvExpr -> TcCoercion -> EvTerm
evVarsOfTerm :: EvTerm -> VarSet
mkEvScSelectors :: Class -> [TcType] -> [(TcPredType, EvExpr)]
evTypeable :: Type -> EvTypeable -> EvTerm
findNeededEvVars :: EvBindMap -> VarSet -> VarSet
evTermCoercion :: EvTerm -> TcCoercion
evTermCoercion_maybe :: EvTerm -> Maybe TcCoercion
data EvCallStack
- = EvCsEmpty
- | EvCsPushCall Name RealSrcSpan EvExpr
data EvTypeable
- = EvTypeableTyCon TyCon [EvTerm]
- | EvTypeableTyApp EvTerm EvTerm
- | EvTypeableTrFun EvTerm EvTerm EvTerm
- | EvTypeableTyLit EvTerm
data HoleExprRef = HER (IORef EvTerm) TcType Unique
type TcCoercion = Coercion
type TcCoercionR = CoercionR
type TcCoercionN = CoercionN
type TcCoercionP = CoercionP
data CoercionHole
type TcMCoercion = MCoercion
type TcMCoercionN = MCoercionN
type TcMCoercionR = MCoercionR
data Role
- = Nominal
- | Representational
- | Phantom
data LeftOrRight
- = CLeft
- | CRight
pickLR :: LeftOrRight -> (a, a) -> a
mkTcReflCo :: Role -> TcType -> TcCoercion
mkTcNomReflCo :: TcType -> TcCoercionN
mkTcRepReflCo :: TcType -> TcCoercionR
mkTcTyConAppCo :: Role -> TyCon -> [TcCoercion] -> TcCoercion
mkTcAppCo :: TcCoercion -> TcCoercionN -> TcCoercion
mkTcFunCo :: Role -> TcCoercion -> TcCoercion -> TcCoercion -> TcCoercion
mkTcAxInstCo :: Role -> CoAxiom br -> BranchIndex -> [TcType] -> [TcCoercion] -> TcCoercion
mkTcUnbranchedAxInstCo :: CoAxiom Unbranched -> [TcType] -> [TcCoercion] -> TcCoercionR
mkTcForAllCo :: TyVar -> TcCoercionN -> TcCoercion -> TcCoercion
mkTcForAllCos :: [(TyVar, TcCoercionN)] -> TcCoercion -> TcCoercion
mkTcSymCo :: TcCoercion -> TcCoercion
mkTcSymMCo :: TcMCoercion -> TcMCoercion
mkTcTransCo :: TcCoercion -> TcCoercion -> TcCoercion
mkTcNthCo :: Role -> Int -> TcCoercion -> TcCoercion
mkTcLRCo :: LeftOrRight -> TcCoercion -> TcCoercion
mkTcSubCo :: HasDebugCallStack => TcCoercionN -> TcCoercionR
maybeTcSymCo :: SwapFlag -> TcCoercion -> TcCoercion
maybeTcSubCo :: HasDebugCallStack => EqRel -> TcCoercionN -> TcCoercion
tcDowngradeRole :: Role -> Role -> TcCoercion -> TcCoercion
mkTcAxiomRuleCo :: CoAxiomRule -> [TcCoercion] -> TcCoercionR
mkTcGReflRightCo :: Role -> TcType -> TcCoercionN -> TcCoercion
mkTcGReflRightMCo :: Role -> TcType -> TcMCoercionN -> TcCoercion
mkTcGReflLeftCo :: Role -> TcType -> TcCoercionN -> TcCoercion
mkTcGReflLeftMCo :: Role -> TcType -> TcMCoercionN -> TcCoercion
mkTcPhantomCo :: TcCoercionN -> TcType -> TcType -> TcCoercionP
mkTcCoherenceLeftCo :: Role -> TcType -> TcCoercionN -> TcCoercion -> TcCoercion
mkTcCoherenceRightCo :: Role -> TcType -> TcCoercionN -> TcCoercion -> TcCoercion
mkTcKindCo :: TcCoercion -> TcCoercionN
tcCoercionKind :: TcCoercion -> Pair TcType
mkTcCoVarCo :: CoVar -> TcCoercion
mkTcFamilyTyConAppCo :: TyCon -> [TcCoercionN] -> TcCoercionN
isTcReflCo :: TcCoercion -> Bool
isTcReflexiveCo :: TcCoercion -> Bool
tcCoercionRole :: TcCoercion -> Role
unwrapIP :: Type -> CoercionR
wrapIP :: Type -> CoercionR
data QuoteWrapper = QuoteWrapper EvVar Type
applyQuoteWrapper :: QuoteWrapper -> HsWrapper
quoteWrapperTyVarTy :: QuoteWrapper -> Type

HsWrapper

data HsWrapper Source #

Instances

Instances details

Data HsWrapper Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> HsWrapper -> c HsWrapper Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c HsWrapper Source # toConstr :: HsWrapper -> Constr Source # dataTypeOf :: HsWrapper -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c HsWrapper) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c HsWrapper) Source # gmapT :: (forall b. Data b => b -> b) -> HsWrapper -> HsWrapper Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsWrapper -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsWrapper -> r Source # gmapQ :: (forall d. Data d => d -> u) -> HsWrapper -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsWrapper -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsWrapper -> m HsWrapper Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsWrapper -> m HsWrapper Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsWrapper -> m HsWrapper Source #
Outputable HsWrapper Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: HsWrapper -> SDoc Source #

(<.>) :: HsWrapper -> HsWrapper -> HsWrapper Source #

mkWpTyApps :: [Type] -> HsWrapper Source #

mkWpEvApps :: [EvTerm] -> HsWrapper Source #

mkWpEvVarApps :: [EvVar] -> HsWrapper Source #

mkWpTyLams :: [TyVar] -> HsWrapper Source #

mkWpLams :: [Var] -> HsWrapper Source #

mkWpLet :: TcEvBinds -> HsWrapper Source #

mkWpCastN :: TcCoercionN -> HsWrapper Source #

mkWpCastR :: TcCoercionR -> HsWrapper Source #

collectHsWrapBinders :: HsWrapper -> ([Var], HsWrapper) Source #

mkWpFun :: HsWrapper -> HsWrapper -> Scaled TcType -> TcType -> SDoc -> HsWrapper Source #

idHsWrapper :: HsWrapper Source #

isIdHsWrapper :: HsWrapper -> Bool Source #

pprHsWrapper :: HsWrapper -> (Bool -> SDoc) -> SDoc Source #

hsWrapDictBinders :: HsWrapper -> Bag DictId Source #

Identifies the lambda-bound dictionaries of an HsWrapper. This is used (only) to allow the pattern-match overlap checker to know what Given dictionaries are in scope.

We specifically do not collect dictionaries bound in a WpLet. These are either superclasses of lambda-bound ones, or (extremely numerous) results of binding Wanted dictionaries. We definitely don't want all those cluttering up the Given dictionaries for pattern-match overlap checking!

Evidence bindings

data TcEvBinds Source #

Constructors

TcEvBinds EvBindsVar
EvBinds (Bag EvBind)

Instances

Instances details

Data TcEvBinds Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> TcEvBinds -> c TcEvBinds Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c TcEvBinds Source # toConstr :: TcEvBinds -> Constr Source # dataTypeOf :: TcEvBinds -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c TcEvBinds) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c TcEvBinds) Source # gmapT :: (forall b. Data b => b -> b) -> TcEvBinds -> TcEvBinds Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> TcEvBinds -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> TcEvBinds -> r Source # gmapQ :: (forall d. Data d => d -> u) -> TcEvBinds -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> TcEvBinds -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> TcEvBinds -> m TcEvBinds Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> TcEvBinds -> m TcEvBinds Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> TcEvBinds -> m TcEvBinds Source #
Outputable TcEvBinds Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: TcEvBinds -> SDoc Source #

data EvBindsVar Source #

Constructors

EvBindsVar
Fields ebv_uniq :: Unique ebv_binds :: IORef EvBindMap ebv_tcvs :: IORef CoVarSet
CoEvBindsVar
Fields ebv_uniq :: Unique ebv_tcvs :: IORef CoVarSet

Instances

Instances details

Uniquable EvBindsVar Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods getUnique :: EvBindsVar -> Unique Source #
Outputable EvBindsVar Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: EvBindsVar -> SDoc Source #

newtype EvBindMap Source #

Constructors

EvBindMap
Fields ev_bind_varenv :: DVarEnv EvBind

Instances

Instances details

Outputable EvBindMap Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: EvBindMap -> SDoc Source #

emptyEvBindMap :: EvBindMap Source #

extendEvBinds :: EvBindMap -> EvBind -> EvBindMap Source #

lookupEvBind :: EvBindMap -> EvVar -> Maybe EvBind Source #

evBindMapBinds :: EvBindMap -> Bag EvBind Source #

foldEvBindMap :: (EvBind -> a -> a) -> a -> EvBindMap -> a Source #

nonDetStrictFoldEvBindMap :: (EvBind -> a -> a) -> a -> EvBindMap -> a Source #

filterEvBindMap :: (EvBind -> Bool) -> EvBindMap -> EvBindMap Source #

isEmptyEvBindMap :: EvBindMap -> Bool Source #

evBindMapToVarSet :: EvBindMap -> VarSet Source #

varSetMinusEvBindMap :: VarSet -> EvBindMap -> VarSet Source #

data EvBind Source #

Constructors

EvBind
Fields eb_lhs :: EvVar eb_rhs :: EvTerm eb_is_given :: Bool

Instances

Instances details

Outputable EvBind Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: EvBind -> SDoc Source #

emptyTcEvBinds :: TcEvBinds Source #

isEmptyTcEvBinds :: TcEvBinds -> Bool Source #

mkGivenEvBind :: EvVar -> EvTerm -> EvBind Source #

mkWantedEvBind :: EvVar -> EvTerm -> EvBind Source #

evBindVar :: EvBind -> EvVar Source #

isCoEvBindsVar :: EvBindsVar -> Bool Source #

EvTerm (already a CoreExpr)

data EvTerm Source #

Constructors

EvExpr EvExpr
EvTypeable Type EvTypeable
EvFun
Fields et_tvs :: [TyVar] et_given :: [EvVar] et_binds :: TcEvBinds et_body :: EvVar

Instances

Instances details

Data EvTerm Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> EvTerm -> c EvTerm Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c EvTerm Source # toConstr :: EvTerm -> Constr Source # dataTypeOf :: EvTerm -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c EvTerm) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c EvTerm) Source # gmapT :: (forall b. Data b => b -> b) -> EvTerm -> EvTerm Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> EvTerm -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> EvTerm -> r Source # gmapQ :: (forall d. Data d => d -> u) -> EvTerm -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> EvTerm -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> EvTerm -> m EvTerm Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> EvTerm -> m EvTerm Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> EvTerm -> m EvTerm Source #
Outputable EvTerm Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: EvTerm -> SDoc Source #

type EvExpr = CoreExpr Source #

evId :: EvId -> EvExpr Source #

Any sort of evidence Id, including coercions

evCoercion :: TcCoercion -> EvTerm Source #

evCast :: EvExpr -> TcCoercion -> EvTerm Source #

d |> co

evDFunApp :: DFunId -> [Type] -> [EvExpr] -> EvTerm Source #

evDataConApp :: DataCon -> [Type] -> [EvExpr] -> EvTerm Source #

evSelector :: Id -> [Type] -> [EvExpr] -> EvExpr Source #

mkEvCast :: EvExpr -> TcCoercion -> EvTerm Source #

evVarsOfTerm :: EvTerm -> VarSet Source #

mkEvScSelectors :: Class -> [TcType] -> [(TcPredType, EvExpr)] Source #

evTypeable :: Type -> EvTypeable -> EvTerm Source #

findNeededEvVars :: EvBindMap -> VarSet -> VarSet Source #

evTermCoercion :: EvTerm -> TcCoercion Source #

evTermCoercion_maybe :: EvTerm -> Maybe TcCoercion Source #

data EvCallStack Source #

Evidence for CallStack implicit parameters.

Constructors

EvCsEmpty
EvCsPushCall Name RealSrcSpan EvExpr	`EvCsPushCall name loc stk` represents a call to `name`, occurring at `loc`, in a calling context `stk`.

Instances

Instances details

Data EvCallStack Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> EvCallStack -> c EvCallStack Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c EvCallStack Source # toConstr :: EvCallStack -> Constr Source # dataTypeOf :: EvCallStack -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c EvCallStack) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c EvCallStack) Source # gmapT :: (forall b. Data b => b -> b) -> EvCallStack -> EvCallStack Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> EvCallStack -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> EvCallStack -> r Source # gmapQ :: (forall d. Data d => d -> u) -> EvCallStack -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> EvCallStack -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> EvCallStack -> m EvCallStack Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> EvCallStack -> m EvCallStack Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> EvCallStack -> m EvCallStack Source #
Outputable EvCallStack Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: EvCallStack -> SDoc Source #

data EvTypeable Source #

Instructions on how to make a Typeable dictionary. See Note [Typeable evidence terms]

Constructors

EvTypeableTyCon TyCon [EvTerm]	Dictionary for `Typeable T` where `T` is a type constructor with all of its kind variables saturated. The `[EvTerm]` is `Typeable` evidence for the applied kinds..
EvTypeableTyApp EvTerm EvTerm	Dictionary for `Typeable (s t)`, given a dictionaries for `s` and `t`.
EvTypeableTrFun EvTerm EvTerm EvTerm	Dictionary for `Typeable (s # w -> t)`, given a dictionaries for `w`, `s`, and `t`.
EvTypeableTyLit EvTerm	Dictionary for a type literal, e.g. `Typeable "foo"` or `Typeable 3` The `EvTerm` is evidence of, e.g., `KnownNat 3` (see #10348)

Instances

Instances details

Data EvTypeable Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> EvTypeable -> c EvTypeable Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c EvTypeable Source # toConstr :: EvTypeable -> Constr Source # dataTypeOf :: EvTypeable -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c EvTypeable) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c EvTypeable) Source # gmapT :: (forall b. Data b => b -> b) -> EvTypeable -> EvTypeable Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> EvTypeable -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> EvTypeable -> r Source # gmapQ :: (forall d. Data d => d -> u) -> EvTypeable -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> EvTypeable -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> EvTypeable -> m EvTypeable Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> EvTypeable -> m EvTypeable Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> EvTypeable -> m EvTypeable Source #
Outputable EvTypeable Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: EvTypeable -> SDoc Source #

HoleExprRef

data HoleExprRef Source #

Where to store evidence for expression holes See Note [Holes] in GHC.Tc.Types.Constraint

Constructors

HER
Fields (IORef EvTerm) where to write the erroring expression TcType expected type of that expression Unique for debug output only

Instances

Instances details

Data HoleExprRef Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> HoleExprRef -> c HoleExprRef Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c HoleExprRef Source # toConstr :: HoleExprRef -> Constr Source # dataTypeOf :: HoleExprRef -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c HoleExprRef) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c HoleExprRef) Source # gmapT :: (forall b. Data b => b -> b) -> HoleExprRef -> HoleExprRef Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HoleExprRef -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HoleExprRef -> r Source # gmapQ :: (forall d. Data d => d -> u) -> HoleExprRef -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> HoleExprRef -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HoleExprRef -> m HoleExprRef Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HoleExprRef -> m HoleExprRef Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HoleExprRef -> m HoleExprRef Source #
Outputable HoleExprRef Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: HoleExprRef -> SDoc Source #

TcCoercion

type TcCoercion = Coercion Source #

type TcCoercionR = CoercionR Source #

type TcCoercionN = CoercionN Source #

type TcCoercionP = CoercionP Source #

data CoercionHole Source #

A coercion to be filled in by the type-checker. See Note [Coercion holes]

Instances

Instances details

Data CoercionHole Source #
Instance details Defined in GHC.Core.TyCo.Rep Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> CoercionHole -> c CoercionHole Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c CoercionHole Source # toConstr :: CoercionHole -> Constr Source # dataTypeOf :: CoercionHole -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c CoercionHole) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c CoercionHole) Source # gmapT :: (forall b. Data b => b -> b) -> CoercionHole -> CoercionHole Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> CoercionHole -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> CoercionHole -> r Source # gmapQ :: (forall d. Data d => d -> u) -> CoercionHole -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> CoercionHole -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> CoercionHole -> m CoercionHole Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> CoercionHole -> m CoercionHole Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> CoercionHole -> m CoercionHole Source #
Uniquable CoercionHole Source #
Instance details Defined in GHC.Core.TyCo.Rep Methods getUnique :: CoercionHole -> Unique Source #
Outputable CoercionHole Source #
Instance details Defined in GHC.Core.TyCo.Rep Methods ppr :: CoercionHole -> SDoc Source #

type TcMCoercion = MCoercion Source #

type TcMCoercionN = MCoercionN Source #

type TcMCoercionR = MCoercionR Source #

data Role Source #

Constructors

Nominal
Representational
Phantom

Instances

Instances details

Data Role Source #
Instance details Defined in GHC.Core.Coercion.Axiom Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Role -> c Role Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Role Source # toConstr :: Role -> Constr Source # dataTypeOf :: Role -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Role) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Role) Source # gmapT :: (forall b. Data b => b -> b) -> Role -> Role Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Role -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Role -> r Source # gmapQ :: (forall d. Data d => d -> u) -> Role -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> Role -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Role -> m Role Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Role -> m Role Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Role -> m Role Source #
Binary Role Source #
Instance details Defined in GHC.Core.Coercion.Axiom Methods put_ :: BinHandle -> Role -> IO () Source # put :: BinHandle -> Role -> IO (Bin Role) Source # get :: BinHandle -> IO Role Source #
Outputable Role Source #
Instance details Defined in GHC.Core.Coercion.Axiom Methods ppr :: Role -> SDoc Source #
Eq Role Source #
Instance details Defined in GHC.Core.Coercion.Axiom Methods (==) :: Role -> Role -> Bool # (/=) :: Role -> Role -> Bool #
Ord Role Source #
Instance details Defined in GHC.Core.Coercion.Axiom Methods compare :: Role -> Role -> Ordering # (<) :: Role -> Role -> Bool # (<=) :: Role -> Role -> Bool # (>) :: Role -> Role -> Bool # (>=) :: Role -> Role -> Bool # max :: Role -> Role -> Role # min :: Role -> Role -> Role #
type Anno (Maybe Role) Source #
Instance details Defined in GHC.Hs.Decls type Anno (Maybe Role) = SrcSpan
type Anno (Maybe Role) Source #
Instance details Defined in GHC.Hs.Decls type Anno (Maybe Role) = SrcSpan

data LeftOrRight Source #

Constructors

CLeft
CRight

Instances

Instances details

Data LeftOrRight Source #
Instance details Defined in GHC.Types.Basic Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> LeftOrRight -> c LeftOrRight Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c LeftOrRight Source # toConstr :: LeftOrRight -> Constr Source # dataTypeOf :: LeftOrRight -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c LeftOrRight) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c LeftOrRight) Source # gmapT :: (forall b. Data b => b -> b) -> LeftOrRight -> LeftOrRight Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> LeftOrRight -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> LeftOrRight -> r Source # gmapQ :: (forall d. Data d => d -> u) -> LeftOrRight -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> LeftOrRight -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> LeftOrRight -> m LeftOrRight Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> LeftOrRight -> m LeftOrRight Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> LeftOrRight -> m LeftOrRight Source #
Binary LeftOrRight Source #
Instance details Defined in GHC.Types.Basic Methods put_ :: BinHandle -> LeftOrRight -> IO () Source # put :: BinHandle -> LeftOrRight -> IO (Bin LeftOrRight) Source # get :: BinHandle -> IO LeftOrRight Source #
Outputable LeftOrRight Source #
Instance details Defined in GHC.Types.Basic Methods ppr :: LeftOrRight -> SDoc Source #
Eq LeftOrRight Source #
Instance details Defined in GHC.Types.Basic Methods (==) :: LeftOrRight -> LeftOrRight -> Bool # (/=) :: LeftOrRight -> LeftOrRight -> Bool #

pickLR :: LeftOrRight -> (a, a) -> a Source #

mkTcReflCo :: Role -> TcType -> TcCoercion Source #

mkTcNomReflCo :: TcType -> TcCoercionN Source #

mkTcRepReflCo :: TcType -> TcCoercionR Source #

mkTcTyConAppCo :: Role -> TyCon -> [TcCoercion] -> TcCoercion Source #

mkTcAppCo :: TcCoercion -> TcCoercionN -> TcCoercion Source #

mkTcFunCo :: Role -> TcCoercion -> TcCoercion -> TcCoercion -> TcCoercion Source #

mkTcAxInstCo :: Role -> CoAxiom br -> BranchIndex -> [TcType] -> [TcCoercion] -> TcCoercion Source #

mkTcUnbranchedAxInstCo :: CoAxiom Unbranched -> [TcType] -> [TcCoercion] -> TcCoercionR Source #

mkTcForAllCo :: TyVar -> TcCoercionN -> TcCoercion -> TcCoercion Source #

mkTcForAllCos :: [(TyVar, TcCoercionN)] -> TcCoercion -> TcCoercion Source #

mkTcSymCo :: TcCoercion -> TcCoercion Source #

mkTcSymMCo :: TcMCoercion -> TcMCoercion Source #

mkTcTransCo :: TcCoercion -> TcCoercion -> TcCoercion Source #

mkTcNthCo :: Role -> Int -> TcCoercion -> TcCoercion Source #

mkTcLRCo :: LeftOrRight -> TcCoercion -> TcCoercion Source #

mkTcSubCo :: HasDebugCallStack => TcCoercionN -> TcCoercionR Source #

maybeTcSymCo :: SwapFlag -> TcCoercion -> TcCoercion Source #

If a SwapFlag is IsSwapped, flip the orientation of a coercion

maybeTcSubCo :: HasDebugCallStack => EqRel -> TcCoercionN -> TcCoercion Source #

If the EqRel is ReprEq, makes a SubCo; otherwise, does nothing. Note that the input coercion should always be nominal.

tcDowngradeRole :: Role -> Role -> TcCoercion -> TcCoercion Source #

mkTcAxiomRuleCo :: CoAxiomRule -> [TcCoercion] -> TcCoercionR Source #

mkTcGReflRightCo :: Role -> TcType -> TcCoercionN -> TcCoercion Source #

mkTcGReflRightMCo :: Role -> TcType -> TcMCoercionN -> TcCoercion Source #

mkTcGReflLeftCo :: Role -> TcType -> TcCoercionN -> TcCoercion Source #

mkTcGReflLeftMCo :: Role -> TcType -> TcMCoercionN -> TcCoercion Source #

mkTcPhantomCo :: TcCoercionN -> TcType -> TcType -> TcCoercionP Source #

mkTcCoherenceLeftCo :: Role -> TcType -> TcCoercionN -> TcCoercion -> TcCoercion Source #

mkTcCoherenceRightCo :: Role -> TcType -> TcCoercionN -> TcCoercion -> TcCoercion Source #

mkTcKindCo :: TcCoercion -> TcCoercionN Source #

tcCoercionKind :: TcCoercion -> Pair TcType Source #

mkTcCoVarCo :: CoVar -> TcCoercion Source #

mkTcFamilyTyConAppCo :: TyCon -> [TcCoercionN] -> TcCoercionN Source #

isTcReflCo :: TcCoercion -> Bool Source #

isTcReflexiveCo :: TcCoercion -> Bool Source #

This version does a slow check, calculating the related types and seeing if they are equal.

tcCoercionRole :: TcCoercion -> Role Source #

unwrapIP :: Type -> CoercionR Source #

Create a Expr that unwraps an implicit-parameter or overloaded-label dictionary to expose the underlying value. We expect the Expr to have the form `IP sym ty` or `IsLabel sym ty`, and return a Expr `co :: IP sym ty ~ ty` or `co :: IsLabel sym ty ~ ty`. See also Note [Type-checking overloaded labels] in GHC.Tc.Gen.Expr.

wrapIP :: Type -> CoercionR Source #

Create a Expr that wraps a value in an implicit-parameter dictionary. See unwrapIP.

QuoteWrapper

data QuoteWrapper Source #

Constructors

QuoteWrapper EvVar Type

Instances

Instances details

Data QuoteWrapper Source #

Instance details

Defined in GHC.Tc.Types.Evidence

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> QuoteWrapper -> c QuoteWrapper Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c QuoteWrapper Source #

toConstr :: QuoteWrapper -> Constr Source #

dataTypeOf :: QuoteWrapper -> DataType Source #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c QuoteWrapper) Source #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c QuoteWrapper) Source #

gmapT :: (forall b. Data b => b -> b) -> QuoteWrapper -> QuoteWrapper Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> QuoteWrapper -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> QuoteWrapper -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> QuoteWrapper -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> QuoteWrapper -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> QuoteWrapper -> m QuoteWrapper Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> QuoteWrapper -> m QuoteWrapper Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> QuoteWrapper -> m QuoteWrapper Source #

applyQuoteWrapper :: QuoteWrapper -> HsWrapper Source #

Convert the QuoteWrapper into a normal HsWrapper which can be used to apply its contents.

quoteWrapperTyVarTy :: QuoteWrapper -> Type Source #

WpHole
WpCompose HsWrapper HsWrapper
WpFun HsWrapper HsWrapper (Scaled TcType) SDoc
WpCast TcCoercionR
WpEvLam EvVar
WpEvApp EvTerm
WpTyLam TyVar
WpTyApp KindOrType
WpLet TcEvBinds
WpMultCoercion Coercion