Avail

Documentation

type Avails = [AvailInfo]

A collection of AvailInfo - several things that are "available"

data AvailInfo

Records what things are "available", i.e. in scope

Constructors

Avail Name

An ordinary identifier in scope

AvailTC Name [Name] [FieldLabel]

A type or class in scope. Parameters:

1) The name of the type or class 2) The available pieces of type or class, excluding field selectors. 3) The record fields of the type (see Note [Representing fields in AvailInfo]).

The AvailTC Invariant: * If the type or class is itself to be in scope, it must be *first* in this list. Thus, typically: AvailTC Eq [Eq, ==, /=]

Instances

Eq AvailInfo

Defined in Avail

Methods

(==) :: AvailInfo -> AvailInfo -> Bool

(/=) :: AvailInfo -> AvailInfo -> Bool

Data AvailInfo

Defined in Avail

Methods

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

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

toConstr :: AvailInfo -> Constr

dataTypeOf :: AvailInfo -> DataType

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

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

gmapT :: (forall b. Data b => b -> b) -> AvailInfo -> AvailInfo

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

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

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

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

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

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

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

Outputable AvailInfo

Defined in Avail

Methods

ppr :: AvailInfo -> SDoc

pprPrec :: Rational -> AvailInfo -> SDoc

Binary AvailInfo

Defined in Avail

Methods

put_ :: BinHandle -> AvailInfo -> IO ()

put :: BinHandle -> AvailInfo -> IO (Bin AvailInfo)

get :: BinHandle -> IO AvailInfo

avail :: Name -> AvailInfo

availsToNameSet :: [AvailInfo] -> NameSet

availsToNameSetWithSelectors :: [AvailInfo] -> NameSet

availsToNameEnv :: [AvailInfo] -> NameEnv AvailInfo

availName :: AvailInfo -> Name

Just the main name made available, i.e. not the available pieces of type or class brought into scope by the GenAvailInfo

availNames :: AvailInfo -> [Name]

All names made available by the availability information (excluding overloaded selectors)

availNonFldNames :: AvailInfo -> [Name]

Names for non-fields made available by the availability information

availNamesWithSelectors :: AvailInfo -> [Name]

All names made available by the availability information (including overloaded selectors)

availFlds :: AvailInfo -> [FieldLabel]

Fields made available by the availability information

availsNamesWithOccs :: [AvailInfo] -> [(Name, OccName)]

availNamesWithOccs :: AvailInfo -> [(Name, OccName)]

Names made available by the availability information, paired with the OccName used to refer to each one.

When DuplicateRecordFields is in use, the Name may be the mangled name of a record selector (e.g. $sel:foo:MkT) while the OccName will be the label of the field (e.g. foo).

See Note [Representing fields in AvailInfo].

stableAvailCmp :: AvailInfo -> AvailInfo -> Ordering

Compare lexicographically

plusAvail :: AvailInfo -> AvailInfo -> AvailInfo

trimAvail :: AvailInfo -> Name -> AvailInfo

trims an AvailInfo to keep only a single name

filterAvail :: (Name -> Bool) -> AvailInfo -> [AvailInfo] -> [AvailInfo]

filters an AvailInfo by the given predicate

filterAvails :: (Name -> Bool) -> [AvailInfo] -> [AvailInfo]

filters AvailInfos by the given predicate

nubAvails :: [AvailInfo] -> [AvailInfo]

Combines AvailInfos from the same family avails may have several items with the same availName E.g import Ix( Ix(..), index ) will give Ix(Ix,index,range) and Ix(index) We want to combine these; addAvail does that