Safe Haskell	None
Language	GHC2021

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 TcTypeFRR)
- | 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
mkWpVisTyLam :: TyVar -> Type -> HsWrapper
mkWpEvLams :: [Var] -> HsWrapper
mkWpLet :: TcEvBinds -> HsWrapper
mkWpFun :: HsWrapper -> HsWrapper -> Scaled TcTypeFRR -> TcType -> HsWrapper
mkWpCastN :: TcCoercionN -> HsWrapper
mkWpCastR :: TcCoercionR -> HsWrapper
mkWpEta :: [Id] -> HsWrapper -> HsWrapper
collectHsWrapBinders :: HsWrapper -> ([Var], 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 EvBindInfo
- = EvBindGiven
- | EvBindWanted {
  - ebi_canonical :: Canonical
  }
data EvBind = EvBind {
- eb_lhs :: EvVar
- eb_rhs :: EvTerm
- eb_info :: EvBindInfo
}
emptyTcEvBinds :: TcEvBinds
isEmptyTcEvBinds :: TcEvBinds -> Bool
mkGivenEvBind :: EvVar -> EvTerm -> EvBind
mkWantedEvBind :: EvVar -> Canonical -> 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 FastString 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
maybeSymCo :: SwapFlag -> TcCoercion -> TcCoercion
unwrapIP :: Type -> CoercionR
wrapIP :: Type -> CoercionR
data QuoteWrapper = QuoteWrapper EvVar Type
applyQuoteWrapper :: QuoteWrapper -> HsWrapper
quoteWrapperTyVarTy :: QuoteWrapper -> Type

HsWrapper

data HsWrapper Source #

Instances

Instances details

Outputable HsWrapper Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods ppr :: HsWrapper -> SDoc Source #
Monoid HsWrapper Source #
Instance details Defined in GHC.Tc.Types.Evidence Methods mempty :: HsWrapper # mappend :: HsWrapper -> HsWrapper -> HsWrapper # mconcat :: [HsWrapper] -> HsWrapper #
Semigroup HsWrapper Source #	The Semigroup instance is a bit fishy, since `WpCompose`, as a data constructor, is "syntactic" and not associative. Concretely, if `a`, `b`, and `c` aren't `WpHole`: (a <> b) <> c ?= a <> (b <> c) > (a `WpCompose` b) `WpCompose` c /= @ a `WpCompose` (b `WpCompose` c) However these two associations are are "semantically equal" in the sense that they produce equal functions when passed to `GHC.HsToCore.Binds.dsHsWrapper`.
Instance details Defined in GHC.Tc.Types.Evidence Methods (<>) :: HsWrapper -> HsWrapper -> HsWrapper # sconcat :: NonEmpty HsWrapper -> HsWrapper # stimes :: Integral b => b -> HsWrapper -> HsWrapper #
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 # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c HsWrapper # toConstr :: HsWrapper -> Constr # dataTypeOf :: HsWrapper -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c HsWrapper) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c HsWrapper) # gmapT :: (forall b. Data b => b -> b) -> HsWrapper -> HsWrapper # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsWrapper -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsWrapper -> r # gmapQ :: (forall d. Data d => d -> u) -> HsWrapper -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsWrapper -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsWrapper -> m HsWrapper # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsWrapper -> m HsWrapper # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsWrapper -> m HsWrapper #

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

mkWpTyApps :: [Type] -> HsWrapper Source #

mkWpEvApps :: [EvTerm] -> HsWrapper Source #

mkWpEvVarApps :: [EvVar] -> HsWrapper Source #

mkWpTyLams :: [TyVar] -> HsWrapper Source #

mkWpVisTyLam :: TyVar -> Type -> HsWrapper Source #

mkWpEvLams :: [Var] -> HsWrapper Source #

mkWpLet :: TcEvBinds -> HsWrapper Source #

mkWpFun Source #

Arguments

:: HsWrapper
-> HsWrapper
-> Scaled TcTypeFRR	the "from" type of the first wrapper MUST have a fixed RuntimeRep
-> TcType	Either "from" type or "to" type of the second wrapper (used only when the second wrapper is the identity)
-> HsWrapper

Smart constructor to create a WpFun HsWrapper.

PRECONDITION: the "from" type of the first wrapper must have a syntactically fixed RuntimeRep (see Note [Fixed RuntimeRep] in GHC.Tc.Utils.Concrete).

mkWpCastN :: TcCoercionN -> HsWrapper Source #

mkWpCastR :: TcCoercionR -> HsWrapper Source #

mkWpEta :: [Id] -> HsWrapper -> HsWrapper Source #

collectHsWrapBinders :: HsWrapper -> ([Var], 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

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

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 EvBindInfo Source #

Constructors

EvBindGiven
EvBindWanted
Fields ebi_canonical :: Canonical

data EvBind Source #

Constructors

EvBind
Fields eb_lhs :: EvVar eb_rhs :: EvTerm eb_info :: EvBindInfo

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 -> Canonical -> 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

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

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 FastString RealSrcSpan EvExpr	`EvCsPushCall origin loc stk` represents a call from `origin`, occurring at `loc`, in a calling context `stk`.

Instances

Instances details

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

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

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

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

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

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

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 #
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 # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c CoercionHole # toConstr :: CoercionHole -> Constr # dataTypeOf :: CoercionHole -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c CoercionHole) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c CoercionHole) # gmapT :: (forall b. Data b => b -> b) -> CoercionHole -> CoercionHole # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> CoercionHole -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> CoercionHole -> r # gmapQ :: (forall d. Data d => d -> u) -> CoercionHole -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> CoercionHole -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> CoercionHole -> m CoercionHole # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> CoercionHole -> m CoercionHole # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> CoercionHole -> m CoercionHole #

type TcMCoercion = MCoercion Source #

type TcMCoercionN = MCoercionN Source #

type TcMCoercionR = MCoercionR Source #

data Role Source #

See Note [Roles] in GHC.Core.Coercion

Order of constructors matters: the Ord instance coincides with the *super*typing relation on roles.

Constructors

Nominal
Representational
Phantom

Instances

Instances details

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 #
Data Role Source #
Instance details Defined in Language.Haskell.Syntax.Basic Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Role -> c Role # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Role # toConstr :: Role -> Constr # dataTypeOf :: Role -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Role) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Role) # gmapT :: (forall b. Data b => b -> b) -> Role -> Role # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Role -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Role -> r # gmapQ :: (forall d. Data d => d -> u) -> Role -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Role -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Role -> m Role # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Role -> m Role # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Role -> m Role #
Eq Role Source #
Instance details Defined in Language.Haskell.Syntax.Basic Methods (==) :: Role -> Role -> Bool # (/=) :: Role -> Role -> Bool #
Ord Role Source #
Instance details Defined in Language.Haskell.Syntax.Basic 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) = EpAnnCO
type Anno (Maybe Role) Source #
Instance details Defined in GHC.Hs.Decls type Anno (Maybe Role) = EpAnnCO

data LeftOrRight Source #

Constructors

CLeft
CRight

Instances

Instances details

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

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

maybeSymCo :: SwapFlag -> TcCoercion -> TcCoercion Source #

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

unwrapIP :: Type -> CoercionR Source #

Create a Coercion that unwraps an implicit-parameter dictionary to expose the underlying value. We expect the Type to have the form `IP sym ty`, and return a Coercion `co :: IP sym ty ~ ty`

wrapIP :: Type -> CoercionR Source #

Create a Coercion 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 #

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

toConstr :: QuoteWrapper -> Constr #

dataTypeOf :: QuoteWrapper -> DataType #

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

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

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

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

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

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

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

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

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

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

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 TcTypeFRR)
WpCast TcCoercionR
WpEvLam EvVar
WpEvApp EvTerm
WpTyLam TyVar
WpTyApp KindOrType
WpLet TcEvBinds
WpMultCoercion Coercion