ghc-9.10.3: The GHC API

Safe Haskell | None
Language | GHC2021

GHC.Types.Avail

Synopsis

- type Avails = [AvailInfo]
- data AvailInfo
  - = Avail Name
  - | AvailTC Name [Name]
- availsToNameSet :: [AvailInfo] -> NameSet
- availsToNameEnv :: [AvailInfo] -> NameEnv AvailInfo
- availExportsDecl :: AvailInfo -> Bool
- availName :: AvailInfo -> Name
- availNames :: AvailInfo -> [Name]
- availSubordinateNames :: AvailInfo -> [Name]
- stableAvailCmp :: AvailInfo -> AvailInfo -> Ordering
- plusAvail :: AvailInfo -> AvailInfo -> AvailInfo
- trimAvail :: AvailInfo -> Name -> AvailInfo
- filterAvail :: (Name -> Bool) -> AvailInfo -> [AvailInfo] -> [AvailInfo]
- filterAvails :: (Name -> Bool) -> [AvailInfo] -> [AvailInfo]
- nubAvails :: [AvailInfo] -> [AvailInfo]

# Documentation

type Avails = [AvailInfo] Source #

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

data AvailInfo Source #

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

Constructors

Avail Name | An ordinary identifier in scope, or a field label without a parent type (see Note [Representing pattern synonym fields in AvailInfo]).

AvailTC

A type or class in scope

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, ==, \/=]

Fields

- Name

  The name of the type or class

- [Name]

  The available pieces of type or class

#### Instances

Instances details

NFData AvailInfo Source # |
Instance details Defined in GHC.Types.Avail Methods rnf :: AvailInfo -> () Source #
Binary AvailInfo Source # |
Instance details Defined in GHC.Types.Avail Methods put_ :: BinHandle -> AvailInfo -> IO () Source # put :: BinHandle -> AvailInfo -> IO (Bin AvailInfo) Source # get :: BinHandle -> IO AvailInfo Source #
Outputable AvailInfo Source # |
Instance details Defined in GHC.Types.Avail Methods ppr :: AvailInfo -> SDoc Source #
Data AvailInfo Source # |

Instance details

Defined in GHC.Types.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 :: forall r r'. (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 #

availsToNameSet :: [AvailInfo] -> NameSet Source #

availsToNameEnv :: [AvailInfo] -> NameEnv AvailInfo Source #

availExportsDecl :: AvailInfo -> Bool Source #

Does this `AvailInfo` export the parent decl? This depends on the invariant that the parent is first if it appears at all.

availName :: AvailInfo -> Name Source #

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

availNames :: AvailInfo -> [Name] Source #

Names and fields made available by the availability information.

availSubordinateNames :: AvailInfo -> [Name] Source #

Names and fields made available by the availability information, other than the main decl itself.

stableAvailCmp :: AvailInfo -> AvailInfo -> Ordering Source #

Compare lexicographically

plusAvail :: AvailInfo -> AvailInfo -> AvailInfo Source #

trimAvail :: AvailInfo -> Name -> AvailInfo Source #

trims an `AvailInfo` to keep only a single name

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

filters an `AvailInfo` by the given predicate

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

filters `AvailInfo`s by the given predicate

nubAvails :: [AvailInfo] -> [AvailInfo] Source #

Combines `AvailInfo`s 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; plusAvail does that