name: stateref version: 0.3 stability: provisional license: PublicDomain cabal-version: >= 1.2 build-type: Simple author: James Cook maintainer: James Cook homepage: http://code.haskell.org/~mokus/stateref/ category: Data synopsis: Abstraction for things that work like IORef. description: A collection of type-classes generalizing the read\/write\/modify operations for stateful variables provided by things like IORef, TVar, &c. Note that The interface has changed a bit from the 0.2.* version. \"*Ref\" functions are now called \"*Reference\" and new \"*Ref\" function exist with simpler signatures. The new 'Ref' existential type provides a convenient monad-indexed reference type, and the HasRef class indicates monads for which there is a default reference type for every referent. tested-with: GHC Flag useSTM Description: Include instances for STM types Default: True Flag useTMVar Description: Include instances for TMVar (TMVar is not available in hugs' STM implementation). I have been unable to make this flag's value depend on whether or not you're running hugs, so if you are, you'll just have to change it manually. It'd sure be nice if there were either an explicit backtrack command in cabal or if 'buildable:false' would trigger a backtrack. Or if I could say "default: not(impl(hugs))" for this flag. Note that this is irrelevant at the moment because I broke Hugs+STM support by adding MonadIO m => ... instances. If anyone really wants me to fix it, speak up - but those instances are pretty darn convenient. Default: True Library hs-source-dirs: src extensions: CPP exposed-modules: Data.Accessor Data.StateRef Data.StateRef.Types Data.StateRef.Instances Data.MRef Data.MRef.Types Data.MRef.Instances other-modules: Data.StateRef.Instances.Undecidable if flag(useSTM) other-modules: Data.StateRef.Instances.STM Data.MRef.Instances.STM cpp-options: -DuseSTM if flag(useTMVar) cpp-options: -DuseTMVar if impl(hugs) buildable: False build-depends: base >= 3 && <5, mtl if flag(useSTM) build-depends: stm