cabal-version:      3.0
name:               dupIO
version:            0.1.0
synopsis:           Duplicate any closure
description:        This is a revival of the old @ghc-dup@ package, and provides
                    a way to make shallow copies of closures.
license:            BSD-3-Clause
license-file:       LICENSE
author:             Edsko de Vries
                    Joachim Breitner
                    Douglas Wilson
maintainer:         edsko@well-typed.com
copyright:          Well-Typed LLP
category:           Development
build-type:         Simple
extra-doc-files:    CHANGELOG.md
tested-with:        GHC ==8.6.5  ||
                        ==8.8.4  ||
                        ==8.10.7 ||
                        ==9.0.2  ||
                        ==9.2.8  ||
                        ==9.4.7  ||
                        ==9.6.2

source-repository head
  type:     git
  location: https://github.com/well-typed/dupIO

common lang
  ghc-options:
      -Wall
  build-depends:
      base >= 4.12 && < 4.19
  default-language:
      Haskell2010
  default-extensions:
      BangPatterns
      DeriveAnyClass
      DerivingStrategies
      EmptyCase
      GeneralizedNewtypeDeriving
      KindSignatures
      LambdaCase
      NamedFieldPuns
      NumericUnderscores
      ScopedTypeVariables
      TypeApplications

--------------------------------------------------------------------------------
-- Main library
--------------------------------------------------------------------------------

library
  import:
      lang
  exposed-modules:
      Data.Dup
  other-modules:
      Data.Dup.Internal
  hs-source-dirs:
      src
  c-sources:
      cbits/dup-prim.cmm
      cbits/dup.c
  build-depends:
      ghc-prim >= 0.5 && < 0.11

--------------------------------------------------------------------------------
-- Testing
--------------------------------------------------------------------------------

flag use-debug-RTS
  manual:  True
  default: False

test-suite test-dupIO
  import:
      lang
  type:
      exitcode-stdio-1.0
  hs-source-dirs:
      test
  main-is:
      Main.hs
  other-modules:
      Test.Average
      Test.Dup.Conduit.Closed
      Test.Dup.Conduit.Sink
      Test.Dup.Conduit.Source
      Test.DupIO.Conduit.Closed
      Test.DupIO.Conduit.Sink
      Test.DupIO.Conduit.Source
      Test.DupIO.Conduit.Source.Bidirectional
      Test.DupIO.Conduit.Source.IO
      Test.DupIO.UnsafeInterleaveIO
      Test.DupIO.UnsafePerformIO
      Test.Sanity.TestSetup
      Test.Util
      Test.Util.Conduit.Bidirectional
      Test.Util.Conduit.Closed
      Test.Util.Conduit.Sink
      Test.Util.Conduit.Source
      Test.Util.Conduit.Source.Bidirectional
      Test.Util.Conduit.Source.IO
      Test.Util.TestSetup
  build-depends:
    , dupIO
    , ghc-prim
    , tasty
    , tasty-hunit
  default-extensions:
      UnboxedTuples
      MagicHash
  ghc-options:
      -with-rtsopts "-T"
      -fno-full-laziness
      -fno-state-hack
      -threaded
      -rtsopts

  if flag(use-debug-RTS)
    ghc-options:
      -with-rtsopts "-T -DS"
      -debug

  if impl(ghc >= 9.2.0)
    ghc-options:
      -fdistinct-constructor-tables
      -finfo-table-map

--------------------------------------------------------------------------------
-- Demos
--
-- NOTE: HLS seems to get confused when @hs-source-dirs@ is defined in a common
-- stanza, so we repeat it for each demo.
--------------------------------------------------------------------------------

flag build-demos
  manual:  True
  default: False

common demo
  import:        lang
  build-depends: dupIO
  if !flag(build-demos)
    buildable: False

executable demo-averageIO
  import:         demo
  hs-source-dirs: demo
  main-is:        AverageIO.hs

executable demo-averageST
  import:         demo
  hs-source-dirs: demo
  main-is:        AverageST.hs

executable demo-conduit
  import:         demo
  hs-source-dirs: demo
  main-is:        Conduit.hs

executable demo-conduit-ref
  import:         demo
  hs-source-dirs: demo
  main-is:        ConduitRef.hs

executable demo-leak-in-io
  import:         demo
  hs-source-dirs: demo
  main-is:        LeakInIO.hs

executable demo-gc
  import:         demo
  hs-source-dirs: demo
  main-is:        GC.hs
  ghc-options:    -rtsopts