Safe Haskell	None
Language	GHC2021

GHC.Hs.Pat

Contents

Orphan instances

Synopsis

data Pat p
- = WildPat (XWildPat p)
- | VarPat (XVarPat p) (LIdP p)
- | LazyPat (XLazyPat p) (LPat p)
- | AsPat (XAsPat p) (LIdP p) (LPat p)
- | ParPat (XParPat p) (LPat p)
- | BangPat (XBangPat p) (LPat p)
- | ListPat (XListPat p) [LPat p]
- | TuplePat (XTuplePat p) [LPat p] Boxity
- | OrPat (XOrPat p) (NonEmpty (LPat p))
- | SumPat (XSumPat p) (LPat p) ConTag SumWidth
- | ConPat {
  - pat_con_ext :: XConPat p
  - pat_con :: XRec p (ConLikeP p)
  - pat_args :: HsConPatDetails p
  }
- | ViewPat (XViewPat p) (LHsExpr p) (LPat p)
- | SplicePat (XSplicePat p) (HsUntypedSplice p)
- | LitPat (XLitPat p) (HsLit p)
- | NPat (XNPat p) (XRec p (HsOverLit p)) (Maybe (SyntaxExpr p)) (SyntaxExpr p)
- | NPlusKPat (XNPlusKPat p) (LIdP p) (XRec p (HsOverLit p)) (HsOverLit p) (SyntaxExpr p) (SyntaxExpr p)
- | SigPat (XSigPat p) (LPat p) (HsPatSigType (NoGhcTc p))
- | EmbTyPat (XEmbTyPat p) (HsTyPat (NoGhcTc p))
- | InvisPat (XInvisPat p) (HsTyPat (NoGhcTc p))
- | XPat !(XXPat p)
type LPat p = XRec p (Pat p)
isInvisArgPat :: Pat p -> Bool
isVisArgPat :: Pat p -> Bool
data EpAnnSumPat = EpAnnSumPat {
- sumPatParens :: [AddEpAnn]
- sumPatVbarsBefore :: [EpaLocation]
- sumPatVbarsAfter :: [EpaLocation]
}
data ConPatTc = ConPatTc {
- cpt_arg_tys :: [Type]
- cpt_tvs :: [TyVar]
- cpt_dicts :: [EvVar]
- cpt_binds :: TcEvBinds
- cpt_wrap :: HsWrapper
}
type family ConLikeP x
data HsPatExpansion a b = HsPatExpanded a b
data XXPatGhcTc
- = CoPat {
  - co_cpt_wrap :: HsWrapper
  - co_pat_inner :: Pat GhcTc
  - co_pat_ty :: Type
  }
- | ExpansionPat (Pat GhcRn) (Pat GhcTc)
type HsConPatDetails p = HsConDetails (HsConPatTyArg (NoGhcTc p)) (LPat p) (HsRecFields p (LPat p))
hsConPatArgs :: UnXRec p => HsConPatDetails p -> [LPat p]
hsConPatTyArgs :: HsConPatDetails p -> [HsConPatTyArg (NoGhcTc p)]
data HsConPatTyArg p = HsConPatTyArg !(XConPatTyArg p) (HsTyPat p)
data HsRecFields p arg = HsRecFields {
- rec_ext :: !(XHsRecFields p)
- rec_flds :: [LHsRecField p arg]
- rec_dotdot :: Maybe (XRec p RecFieldsDotDot)
}
data HsFieldBind lhs rhs = HsFieldBind {
- hfbAnn :: XHsFieldBind lhs
- hfbLHS :: lhs
- hfbRHS :: rhs
- hfbPun :: Bool
}
type LHsFieldBind p id arg = XRec p (HsFieldBind id arg)
type HsRecField p arg = HsFieldBind (LFieldOcc p) arg
type LHsRecField p arg = XRec p (HsRecField p arg)
type HsRecUpdField p q = HsFieldBind (LAmbiguousFieldOcc p) (LHsExpr q)
type LHsRecUpdField p q = XRec p (HsRecUpdField p q)
newtype RecFieldsDotDot = RecFieldsDotDot {
- unRecFieldsDotDot :: Int
}
hsRecFields :: UnXRec p => HsRecFields p arg -> [XCFieldOcc p]
hsRecFieldSel :: UnXRec p => HsRecField p arg -> XCFieldOcc p
hsRecFieldId :: HsRecField GhcTc arg -> Id
hsRecFieldsArgs :: UnXRec p => HsRecFields p arg -> [arg]
hsRecUpdFieldId :: HsFieldBind (LAmbiguousFieldOcc GhcTc) arg -> Located Id
hsRecUpdFieldOcc :: HsFieldBind (LAmbiguousFieldOcc GhcTc) arg -> LFieldOcc GhcTc
hsRecUpdFieldRdr :: forall (p :: Pass) q. HsRecUpdField (GhcPass p) q -> Located RdrName
mkPrefixConPat :: DataCon -> [LPat GhcTc] -> [Type] -> LPat GhcTc
mkCharLitPat :: SourceText -> Char -> LPat GhcTc
mkNilPat :: Type -> LPat GhcTc
isSimplePat :: forall (x :: Pass). LPat (GhcPass x) -> Maybe (IdP (GhcPass x))
isPatSyn :: LPat GhcTc -> Bool
looksLazyPatBind :: HsBind GhcTc -> Bool
isBangedLPat :: forall (p :: Pass). LPat (GhcPass p) -> Bool
gParPat :: forall (p :: Pass). IsPass p => LPat (GhcPass p) -> Pat (GhcPass p)
patNeedsParens :: forall (p :: Pass). IsPass p => PprPrec -> Pat (GhcPass p) -> Bool
parenthesizePat :: forall (p :: Pass). IsPass p => PprPrec -> LPat (GhcPass p) -> LPat (GhcPass p)
isIrrefutableHsPat :: forall (p :: Pass). IsPass p => Bool -> (ConLikeP (GhcPass p) -> Bool) -> LPat (GhcPass p) -> Bool
isBoringHsPat :: forall (p :: Pass). OutputableBndrId p => LPat (GhcPass p) -> Bool
collectEvVarsPat :: Pat GhcTc -> Bag EvVar
collectEvVarsPats :: [Pat GhcTc] -> Bag EvVar
pprParendLPat :: forall (p :: Pass). OutputableBndrId p => PprPrec -> LPat (GhcPass p) -> SDoc
pprConArgs :: forall (p :: Pass). (OutputableBndrId p, Outputable (Anno (IdGhcP p))) => HsConPatDetails (GhcPass p) -> SDoc
pprLPat :: forall (p :: Pass). OutputableBndrId p => LPat (GhcPass p) -> SDoc

Documentation

data Pat p Source #

Pattern

Constructors

WildPat (XWildPat p)	Wildcard Pattern, i.e. `_`
VarPat (XVarPat p) (LIdP p)	Variable Pattern, e.g. `x`
LazyPat (XLazyPat p) (LPat p)	Lazy Pattern, e.g. `~x` exactprint: the location of `~` is captured using `AnnKeywordId` : `AnnTilde`
AsPat (XAsPat p) (LIdP p) (LPat p)	As pattern, e.g. `x@pat` exactprint: the location of `@` is captured using `EpToken` `"@"`
ParPat (XParPat p) (LPat p)	Parenthesised pattern, e.g. `(x)` exactprint: the location of parentheses is captured using `EpToken` `"("` and `EpToken` `")"`
BangPat (XBangPat p) (LPat p)	Bang pattern, e.g. `!x` exactprint: the location of `!` is captured using `AnnKeywordId` : `AnnBang`
ListPat (XListPat p) [LPat p]	Syntactic List, e.g. `[x]` or `[x,y]`. Note that `[]` and `(x:xs)` patterns are both represented using `ConPat`. exactprint: the location of brackets is captured using `AnnKeywordId` : `AnnOpenS` and `AnnCloseS` respectively.
TuplePat	Tuple pattern, e.g. `(x, y)` (boxed tuples) or `(# x, y #)` (requires `-XUnboxedTuples`) exactprint: the location of parens is captured using `AnnKeywordId` : `AnnOpenP` and `AnnCloseP` in case of boxed tuples or `AnnOpenPH` and `AnnClosePH` in case of unboxed tuples.
Fields (XTuplePat p) After typechecking, holds the types of the tuple components [LPat p] Tuple sub-patterns Boxity
OrPat (XOrPat p) (NonEmpty (LPat p))	Or Pattern, e.g. `(pat_1; ...; pat_n)`. Used by `-XOrPatterns` Since: ghc-9.12.1
SumPat (XSumPat p) (LPat p) ConTag SumWidth	Anonymous sum pattern, e.g. `(# x \| #)`. Used by `-XUnboxedSums` exactprint: the location of `(#` and `#)` is captured using `AnnKeywordId` : `AnnOpenPH` and `AnnClosePH` respectively.
ConPat	Constructor Pattern, e.g. `()`, `[]` or `Nothing`
Fields pat_con_ext :: XConPat p pat_con :: XRec p (ConLikeP p) pat_args :: HsConPatDetails p
ViewPat (XViewPat p) (LHsExpr p) (LPat p)	View Pattern, e.g. `someFun -> pat`. Used by `-XViewPatterns` exactprint: the location of `->` is captured using `AnnKeywordId` : `AnnRarrow`
SplicePat (XSplicePat p) (HsUntypedSplice p)	Splice Pattern, e.g. `$(pat)`
LitPat (XLitPat p) (HsLit p)	Literal Pattern Used for non-overloaded literal patterns: Int#, Char#, Int, Char, String, etc.
NPat (XNPat p) (XRec p (HsOverLit p)) (Maybe (SyntaxExpr p)) (SyntaxExpr p)	Natural Pattern, used for all overloaded literals, including overloaded Strings with `-XOverloadedStrings` exactprint: the location of `-` (for negative literals) is captured using `AnnKeywordId` : `AnnMinus`
NPlusKPat (XNPlusKPat p) (LIdP p) (XRec p (HsOverLit p)) (HsOverLit p) (SyntaxExpr p) (SyntaxExpr p)	n+k pattern, e.g. `n+1`, used by `-XNPlusKPatterns`
SigPat (XSigPat p) (LPat p) (HsPatSigType (NoGhcTc p))	Pattern with a type signature, e.g. `x :: Int` exactprint: the location of `::` is captured using `AnnKeywordId` : `AnnDcolon`
EmbTyPat (XEmbTyPat p) (HsTyPat (NoGhcTc p))	Embed the syntax of types into patterns, e.g. `fn (type t) = rhs`. Enabled by `-XExplicitNamespaces` in conjunction with `-XRequiredTypeArguments`. exactprint: the location of the `type` keyword is captured using `EpToken` `"type"`
InvisPat (XInvisPat p) (HsTyPat (NoGhcTc p))	Type abstraction which brings into scope type variables associated with invisible forall. E.g. `fn @t ... = rhs`. Used by `-XTypeAbstractions`. exactprint: the location of `@` is captured by `EpToken` `"@"`
XPat !(XXPat p)	TTG Extension point; see Note [Trees That Grow] in Language.Haskell.Syntax.Extension

Instances

Instances details

OutputableBndrId p => Outputable (Pat (GhcPass p)) Source #
Instance details Defined in GHC.Hs.Pat Methods ppr :: Pat (GhcPass p) -> SDoc Source #
Data (Pat GhcPs) Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Pat GhcPs -> c (Pat GhcPs) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Pat GhcPs) # toConstr :: Pat GhcPs -> Constr # dataTypeOf :: Pat GhcPs -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Pat GhcPs)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Pat GhcPs)) # gmapT :: (forall b. Data b => b -> b) -> Pat GhcPs -> Pat GhcPs # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Pat GhcPs -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Pat GhcPs -> r # gmapQ :: (forall d. Data d => d -> u) -> Pat GhcPs -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Pat GhcPs -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Pat GhcPs -> m (Pat GhcPs) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Pat GhcPs -> m (Pat GhcPs) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Pat GhcPs -> m (Pat GhcPs) #
Data (Pat GhcRn) Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Pat GhcRn -> c (Pat GhcRn) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Pat GhcRn) # toConstr :: Pat GhcRn -> Constr # dataTypeOf :: Pat GhcRn -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Pat GhcRn)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Pat GhcRn)) # gmapT :: (forall b. Data b => b -> b) -> Pat GhcRn -> Pat GhcRn # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Pat GhcRn -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Pat GhcRn -> r # gmapQ :: (forall d. Data d => d -> u) -> Pat GhcRn -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Pat GhcRn -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Pat GhcRn -> m (Pat GhcRn) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Pat GhcRn -> m (Pat GhcRn) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Pat GhcRn -> m (Pat GhcRn) #
Data (Pat GhcTc) Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Pat GhcTc -> c (Pat GhcTc) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Pat GhcTc) # toConstr :: Pat GhcTc -> Constr # dataTypeOf :: Pat GhcTc -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Pat GhcTc)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Pat GhcTc)) # gmapT :: (forall b. Data b => b -> b) -> Pat GhcTc -> Pat GhcTc # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Pat GhcTc -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Pat GhcTc -> r # gmapQ :: (forall d. Data d => d -> u) -> Pat GhcTc -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Pat GhcTc -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Pat GhcTc -> m (Pat GhcTc) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Pat GhcTc -> m (Pat GhcTc) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Pat GhcTc -> m (Pat GhcTc) #
type Anno (Pat (GhcPass p)) Source #
Instance details Defined in GHC.Hs.Pat type Anno (Pat (GhcPass p)) = SrcSpanAnnA
type Anno [LocatedA (Pat (GhcPass p))] Source #
Instance details Defined in GHC.Hs.Expr type Anno [LocatedA (Pat (GhcPass p))] = EpaLocation

type LPat p = XRec p (Pat p) Source #

isInvisArgPat :: Pat p -> Bool Source #

isVisArgPat :: Pat p -> Bool Source #

data EpAnnSumPat Source #

Constructors

EpAnnSumPat
Fields sumPatParens :: [AddEpAnn] sumPatVbarsBefore :: [EpaLocation] sumPatVbarsAfter :: [EpaLocation]

Instances

Instances details

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

data ConPatTc Source #

This is the extension field for ConPat, added after typechecking It adds quite a few extra fields, to support elaboration of pattern matching.

Constructors

ConPatTc

Fields

cpt_arg_tys :: [Type]
The universal arg types 1-1 with the universal tyvars of the constructor/pattern synonym Use (conLikeResTy pat_con cpt_arg_tys) to get the type of the pattern
cpt_tvs :: [TyVar]
Existentially bound type variables in correctly-scoped order e.g. [k:* x:k]
cpt_dicts :: [EvVar]
Ditto *coercion variables* and *dictionaries* One reason for putting coercion variable here I think is to ensure their kinds are zonked
cpt_binds :: TcEvBinds
Bindings involving those dictionaries
cpt_wrap :: HsWrapper
Extra wrapper to pass to the matcher Only relevant for pattern-synonyms; ignored for data cons

Instances

Instances details

Data ConPatTc Source #

Instance details

Defined in GHC.Hs.Instances

Methods

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

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

toConstr :: ConPatTc -> Constr #

dataTypeOf :: ConPatTc -> DataType #

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

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

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

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

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

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

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

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

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

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

type family ConLikeP x Source #

Instances

Instances details

type ConLikeP GhcPs Source #
Instance details Defined in GHC.Hs.Pat type ConLikeP GhcPs = RdrName
type ConLikeP GhcRn Source #
Instance details Defined in GHC.Hs.Pat type ConLikeP GhcRn = Name
type ConLikeP GhcTc Source #
Instance details Defined in GHC.Hs.Pat type ConLikeP GhcTc = ConLike

data HsPatExpansion a b Source #

Constructors

HsPatExpanded a b

Instances

Instances details

(Outputable a, Outputable b) => Outputable (HsPatExpansion a b) Source #
Instance details Defined in GHC.Hs.Pat Methods ppr :: HsPatExpansion a b -> SDoc Source #
(Data a, Data b) => Data (HsPatExpansion a b) Source #
Instance details Defined in GHC.Hs.Pat Methods gfoldl :: (forall d b0. Data d => c (d -> b0) -> d -> c b0) -> (forall g. g -> c g) -> HsPatExpansion a b -> c (HsPatExpansion a b) # gunfold :: (forall b0 r. Data b0 => c (b0 -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (HsPatExpansion a b) # toConstr :: HsPatExpansion a b -> Constr # dataTypeOf :: HsPatExpansion a b -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (HsPatExpansion a b)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (HsPatExpansion a b)) # gmapT :: (forall b0. Data b0 => b0 -> b0) -> HsPatExpansion a b -> HsPatExpansion a b # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsPatExpansion a b -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsPatExpansion a b -> r # gmapQ :: (forall d. Data d => d -> u) -> HsPatExpansion a b -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsPatExpansion a b -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsPatExpansion a b -> m (HsPatExpansion a b) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsPatExpansion a b -> m (HsPatExpansion a b) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsPatExpansion a b -> m (HsPatExpansion a b) #

data XXPatGhcTc Source #

Extension constructor for Pat, added after typechecking.

Constructors

CoPat

Coercion Pattern (translation only)

During desugaring a (CoPat co pat) turns into a cast with co on the scrutinee, followed by a match on pat.

Fields

co_cpt_wrap :: HsWrapper
Coercion Pattern If co :: t1 ~ t2, p :: t2, then (CoPat co p) :: t1
co_pat_inner :: Pat GhcTc
Why not LPat? Ans: existing locn will do
co_pat_ty :: Type
Type of whole pattern, t1

ExpansionPat (Pat GhcRn) (Pat GhcTc)

Pattern expansion: original pattern, and desugared pattern, for RebindableSyntax and other overloaded syntax such as OverloadedLists. See Note [Rebindable syntax and XXExprGhcRn].

Instances

Instances details

Data XXPatGhcTc Source #

Instance details

Defined in GHC.Hs.Instances

Methods

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

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

toConstr :: XXPatGhcTc -> Constr #

dataTypeOf :: XXPatGhcTc -> DataType #

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

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

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

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

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

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

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

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

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

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

type HsConPatDetails p = HsConDetails (HsConPatTyArg (NoGhcTc p)) (LPat p) (HsRecFields p (LPat p)) Source #

Haskell Constructor Pattern Details

hsConPatArgs :: UnXRec p => HsConPatDetails p -> [LPat p] Source #

hsConPatTyArgs :: HsConPatDetails p -> [HsConPatTyArg (NoGhcTc p)] Source #

data HsConPatTyArg p Source #

Type argument in a data constructor pattern, e.g. the @a in f (Just @a x) = ....

Constructors

HsConPatTyArg !(XConPatTyArg p) (HsTyPat p)

Instances

Instances details

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

data HsRecFields p arg Source #

Haskell Record Fields

HsRecFields is used only for patterns and expressions (not data type declarations)

Constructors

HsRecFields
Fields rec_ext :: !(XHsRecFields p) rec_flds :: [LHsRecField p arg] rec_dotdot :: Maybe (XRec p RecFieldsDotDot)

Instances

Instances details

(Outputable arg, Outputable (XRec p (HsRecField p arg)), XRec p RecFieldsDotDot ~ LocatedE RecFieldsDotDot) => Outputable (HsRecFields p arg) Source #
Instance details Defined in GHC.Hs.Pat Methods ppr :: HsRecFields p arg -> SDoc Source #
Data body => Data (HsRecFields GhcPs body) Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> HsRecFields GhcPs body -> c (HsRecFields GhcPs body) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (HsRecFields GhcPs body) # toConstr :: HsRecFields GhcPs body -> Constr # dataTypeOf :: HsRecFields GhcPs body -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (HsRecFields GhcPs body)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (HsRecFields GhcPs body)) # gmapT :: (forall b. Data b => b -> b) -> HsRecFields GhcPs body -> HsRecFields GhcPs body # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsRecFields GhcPs body -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsRecFields GhcPs body -> r # gmapQ :: (forall d. Data d => d -> u) -> HsRecFields GhcPs body -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsRecFields GhcPs body -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsRecFields GhcPs body -> m (HsRecFields GhcPs body) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsRecFields GhcPs body -> m (HsRecFields GhcPs body) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsRecFields GhcPs body -> m (HsRecFields GhcPs body) #
Data body => Data (HsRecFields GhcRn body) Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> HsRecFields GhcRn body -> c (HsRecFields GhcRn body) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (HsRecFields GhcRn body) # toConstr :: HsRecFields GhcRn body -> Constr # dataTypeOf :: HsRecFields GhcRn body -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (HsRecFields GhcRn body)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (HsRecFields GhcRn body)) # gmapT :: (forall b. Data b => b -> b) -> HsRecFields GhcRn body -> HsRecFields GhcRn body # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsRecFields GhcRn body -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsRecFields GhcRn body -> r # gmapQ :: (forall d. Data d => d -> u) -> HsRecFields GhcRn body -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsRecFields GhcRn body -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsRecFields GhcRn body -> m (HsRecFields GhcRn body) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsRecFields GhcRn body -> m (HsRecFields GhcRn body) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsRecFields GhcRn body -> m (HsRecFields GhcRn body) #
Data body => Data (HsRecFields GhcTc body) Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> HsRecFields GhcTc body -> c (HsRecFields GhcTc body) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (HsRecFields GhcTc body) # toConstr :: HsRecFields GhcTc body -> Constr # dataTypeOf :: HsRecFields GhcTc body -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (HsRecFields GhcTc body)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (HsRecFields GhcTc body)) # gmapT :: (forall b. Data b => b -> b) -> HsRecFields GhcTc body -> HsRecFields GhcTc body # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsRecFields GhcTc body -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsRecFields GhcTc body -> r # gmapQ :: (forall d. Data d => d -> u) -> HsRecFields GhcTc body -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsRecFields GhcTc body -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsRecFields GhcTc body -> m (HsRecFields GhcTc body) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsRecFields GhcTc body -> m (HsRecFields GhcTc body) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsRecFields GhcTc body -> m (HsRecFields GhcTc body) #

data HsFieldBind lhs rhs Source #

Haskell Field Binding

AnnKeywordId : AnnEqual

For details on above see Note [exact print annotations] in GHC.Parser.Annotation

Constructors

HsFieldBind
Fields hfbAnn :: XHsFieldBind lhs hfbLHS :: lhs hfbRHS :: rhs Filled in by renamer when punning hfbPun :: Bool Note [Punning]

Instances

Instances details

Functor (HsFieldBind lhs) Source #
Instance details Defined in Language.Haskell.Syntax.Pat Methods fmap :: (a -> b) -> HsFieldBind lhs a -> HsFieldBind lhs b # (<$) :: a -> HsFieldBind lhs b -> HsFieldBind lhs a #
Foldable (HsFieldBind lhs) Source #
Instance details Defined in Language.Haskell.Syntax.Pat Methods fold :: Monoid m => HsFieldBind lhs m -> m # foldMap :: Monoid m => (a -> m) -> HsFieldBind lhs a -> m # foldMap' :: Monoid m => (a -> m) -> HsFieldBind lhs a -> m # foldr :: (a -> b -> b) -> b -> HsFieldBind lhs a -> b # foldr' :: (a -> b -> b) -> b -> HsFieldBind lhs a -> b # foldl :: (b -> a -> b) -> b -> HsFieldBind lhs a -> b # foldl' :: (b -> a -> b) -> b -> HsFieldBind lhs a -> b # foldr1 :: (a -> a -> a) -> HsFieldBind lhs a -> a # foldl1 :: (a -> a -> a) -> HsFieldBind lhs a -> a # toList :: HsFieldBind lhs a -> [a] # null :: HsFieldBind lhs a -> Bool # length :: HsFieldBind lhs a -> Int # elem :: Eq a => a -> HsFieldBind lhs a -> Bool # maximum :: Ord a => HsFieldBind lhs a -> a # minimum :: Ord a => HsFieldBind lhs a -> a # sum :: Num a => HsFieldBind lhs a -> a # product :: Num a => HsFieldBind lhs a -> a #
Traversable (HsFieldBind lhs) Source #
Instance details Defined in Language.Haskell.Syntax.Pat Methods traverse :: Applicative f => (a -> f b) -> HsFieldBind lhs a -> f (HsFieldBind lhs b) # sequenceA :: Applicative f => HsFieldBind lhs (f a) -> f (HsFieldBind lhs a) # mapM :: Monad m => (a -> m b) -> HsFieldBind lhs a -> m (HsFieldBind lhs b) # sequence :: Monad m => HsFieldBind lhs (m a) -> m (HsFieldBind lhs a) #
(Outputable p, OutputableBndr p, Outputable arg) => Outputable (HsFieldBind p arg) Source #
Instance details Defined in GHC.Hs.Pat Methods ppr :: HsFieldBind p arg -> SDoc Source #
(Data a, Data b) => Data (HsFieldBind a b) Source #
Instance details Defined in GHC.Hs.Instances Methods gfoldl :: (forall d b0. Data d => c (d -> b0) -> d -> c b0) -> (forall g. g -> c g) -> HsFieldBind a b -> c (HsFieldBind a b) # gunfold :: (forall b0 r. Data b0 => c (b0 -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (HsFieldBind a b) # toConstr :: HsFieldBind a b -> Constr # dataTypeOf :: HsFieldBind a b -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (HsFieldBind a b)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (HsFieldBind a b)) # gmapT :: (forall b0. Data b0 => b0 -> b0) -> HsFieldBind a b -> HsFieldBind a b # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> HsFieldBind a b -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> HsFieldBind a b -> r # gmapQ :: (forall d. Data d => d -> u) -> HsFieldBind a b -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> HsFieldBind a b -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> HsFieldBind a b -> m (HsFieldBind a b) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> HsFieldBind a b -> m (HsFieldBind a b) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> HsFieldBind a b -> m (HsFieldBind a b) #
type Anno (HsFieldBind lhs rhs) Source #
Instance details Defined in GHC.Hs.Pat type Anno (HsFieldBind lhs rhs) = SrcSpanAnnA

type LHsFieldBind p id arg = XRec p (HsFieldBind id arg) Source #

Located Haskell Record Field

type HsRecField p arg = HsFieldBind (LFieldOcc p) arg Source #

Haskell Record Field

type LHsRecField p arg = XRec p (HsRecField p arg) Source #

Located Haskell Record Field

type HsRecUpdField p q = HsFieldBind (LAmbiguousFieldOcc p) (LHsExpr q) Source #

Haskell Record Update Field

type LHsRecUpdField p q = XRec p (HsRecUpdField p q) Source #

Located Haskell Record Update Field

newtype RecFieldsDotDot Source #

Newtype to be able to have a specific XRec instance for the Int in rec_dotdot

Constructors

RecFieldsDotDot
Fields unRecFieldsDotDot :: Int

Instances

Instances details

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

hsRecFields :: UnXRec p => HsRecFields p arg -> [XCFieldOcc p] Source #

hsRecFieldSel :: UnXRec p => HsRecField p arg -> XCFieldOcc p Source #

hsRecFieldId :: HsRecField GhcTc arg -> Id Source #

hsRecFieldsArgs :: UnXRec p => HsRecFields p arg -> [arg] Source #

hsRecUpdFieldId :: HsFieldBind (LAmbiguousFieldOcc GhcTc) arg -> Located Id Source #

hsRecUpdFieldOcc :: HsFieldBind (LAmbiguousFieldOcc GhcTc) arg -> LFieldOcc GhcTc Source #

hsRecUpdFieldRdr :: forall (p :: Pass) q. HsRecUpdField (GhcPass p) q -> Located RdrName Source #

mkPrefixConPat :: DataCon -> [LPat GhcTc] -> [Type] -> LPat GhcTc Source #

mkCharLitPat :: SourceText -> Char -> LPat GhcTc Source #

mkNilPat :: Type -> LPat GhcTc Source #

isSimplePat :: forall (x :: Pass). LPat (GhcPass x) -> Maybe (IdP (GhcPass x)) Source #

Is the pattern any of combination of:

(pat)
pat :: Type
~pat
!pat
x (variable)

isPatSyn :: LPat GhcTc -> Bool Source #

looksLazyPatBind :: HsBind GhcTc -> Bool Source #

isBangedLPat :: forall (p :: Pass). LPat (GhcPass p) -> Bool Source #

gParPat :: forall (p :: Pass). IsPass p => LPat (GhcPass p) -> Pat (GhcPass p) Source #

Parenthesize a pattern without token information

patNeedsParens :: forall (p :: Pass). IsPass p => PprPrec -> Pat (GhcPass p) -> Bool Source #

patNeedsParens p pat returns True if the pattern pat needs parentheses under precedence p.

parenthesizePat :: forall (p :: Pass). IsPass p => PprPrec -> LPat (GhcPass p) -> LPat (GhcPass p) Source #

parenthesizePat p pat checks if patNeedsParens p pat is true, and if so, surrounds pat with a ParPat. Otherwise, it simply returns pat.

isIrrefutableHsPat Source #

Arguments

:: forall (p :: Pass). IsPass p
=> Bool	Are we in a `-XStrict` context? See Note [-XStrict and irrefutability]
-> (ConLikeP (GhcPass p) -> Bool)	How to check whether the `ConLike` in a `ConPat` pattern is irrefutable
-> LPat (GhcPass p)	The (located) pattern to check
-> Bool

isIrrefutableHsPat p is true if matching against p cannot fail in the sense of falling through to the next pattern. (NB: this is not quite the same as the (silly) defn in 3.17.2 of the Haskell 98 report.)

If isIrrefutableHsPat returns True, the pattern is definitely irrefutable.

However, isIrrefutableHsPat returns False if it's in doubt. It's a best effort guess with the information we have available:

we sometimes call isIrrefutableHsPat from the renamer, in which case we don't have type information to hand. This means we can't properly handle GADTs, nor the result TyCon of COMPLETE pragmas.
even when calling isIrrefutableHsPat in the typechecker, we don't keep track of any long distance information like the pattern-match checker does.

isBoringHsPat :: forall (p :: Pass). OutputableBndrId p => LPat (GhcPass p) -> Bool Source #

Is this pattern boring from the perspective of pattern-match checking, i.e. introduces no new pieces of long-distance information which could influence pattern-match checking?

See Note [Boring patterns].

collectEvVarsPat :: Pat GhcTc -> Bag EvVar Source #

collectEvVarsPats :: [Pat GhcTc] -> Bag EvVar Source #

pprParendLPat :: forall (p :: Pass). OutputableBndrId p => PprPrec -> LPat (GhcPass p) -> SDoc Source #

pprConArgs :: forall (p :: Pass). (OutputableBndrId p, Outputable (Anno (IdGhcP p))) => HsConPatDetails (GhcPass p) -> SDoc Source #

pprLPat :: forall (p :: Pass). OutputableBndrId p => LPat (GhcPass p) -> SDoc Source #

Orphan instances

Outputable (HsTyPat p) => Outputable (HsConPatTyArg p) Source #
Instance details Methods ppr :: HsConPatTyArg p -> SDoc Source #
OutputableBndrId p => Outputable (Pat (GhcPass p)) Source #
Instance details Methods ppr :: Pat (GhcPass p) -> SDoc Source #
(Outputable p, OutputableBndr p, Outputable arg) => Outputable (HsFieldBind p arg) Source #
Instance details Methods ppr :: HsFieldBind p arg -> SDoc Source #
(Outputable arg, Outputable (XRec p (HsRecField p arg)), XRec p RecFieldsDotDot ~ LocatedE RecFieldsDotDot) => Outputable (HsRecFields p arg) Source #
Instance details Methods ppr :: HsRecFields p arg -> SDoc Source #