ghc-9.8.0.20230929: The GHC API
Safe HaskellNone
LanguageHaskell2010

GHC.Data.FastString.Env

Description

 
Synopsis

FastString environments (maps)

type FastStringEnv a = UniqFM FastString a Source #

A non-deterministic set of FastStrings. See Note [Deterministic UniqFM] in GHC.Types.Unique.DFM for explanation why it's not deterministic and why it matters. Use DFastStringEnv if the set eventually gets converted into a list or folded over in a way where the order changes the generated code.

Manipulating these environments

extendFsEnv_C :: (a -> a -> a) -> FastStringEnv a -> FastString -> a -> FastStringEnv a Source #

extendFsEnv_Acc :: (a -> b -> b) -> (a -> b) -> FastStringEnv b -> FastString -> a -> FastStringEnv b Source #

extendFsEnvList_C :: (a -> a -> a) -> FastStringEnv a -> [(FastString, a)] -> FastStringEnv a Source #

mapFsEnv :: (elt1 -> elt2) -> FastStringEnv elt1 -> FastStringEnv elt2 Source #

mapMaybeFsEnv :: (elt1 -> Maybe elt2) -> FastStringEnv elt1 -> FastStringEnv elt2 Source #

nonDetFoldFsEnv :: (a -> b -> b) -> b -> FastStringEnv a -> b Source #

Fold over a FastStringEnv.

Non-deterministic, unless the folding function is commutative (i.e. a1 f ( a2 f b ) == a2 f ( a1 f b ) for all a1, a2, b).

Deterministic FastString environments (maps)

Manipulating these environments