name:                hashabler
version:             1.1
x-revision: 2
synopsis:            Principled, portable & extensible hashing of data and types, including an implementation of the FNV-1a and SipHash algorithms.
description:         
    This package is a rewrite of the @hashable@ library by Milan Straka and
    Johan Tibell, having the following goals:
    .
    - Extensibility; it should be easy to implement a new hashing algorithm on
      any @Hashable@ type; in this package we provide SipHash and FNV-1a.
    .
    - Honest hashing of values, and principled hashing of algebraic data types
      (see e.g. hashable issues #74 and #30)
    .
    - Cross-platform consistent hash values, with a versioning guarantee. Where
      possible we ensure morally identical data hashes to indentical values
      regardless of processor word size and endianness.
    .
    - Make implementing identical hash routines in other languages as painless
      as possible. In addition to SipHash, we provide an implementation of a
      simple hashing algorithm (FNV-1a) and make an effort to define Hashable
      instances in a way that is well-documented and sensible, so that e.g. one
      can easily implement a string hashing routine in JavaScript that will
      match the way we hash strings here.
    .
    /Versioning/: Except for instances where we specifically note that we make
    no promise of consistency, changes to hash values (and consequently changes
    to @StableHashable@ values, where applicable) entail a major version number
    bump.


homepage:            https://github.com/jberryman/hashabler
license:             BSD3
license-file:        LICENSE
author:              Brandon Simmons
maintainer:          brandon.m.simmons@gmail.com
-- copyright:           
category:            Data
build-type:          Simple
cabal-version:       >=1.18

-- For tests:
extra-source-files:  tests/Vectors/generated/*.in
                   , tests/Vectors/generated/*.out.FNV32
                   -- cabal's wildcards are strange and sucky:
                   , tests/Vectors/generated/*.ByteString.out.FNV32
                   , tests/Vectors/generated/P.ByteArray.out.FNV32
                   , tests/Vectors/generated/*.Text.out.FNV32
                   , CHANGELOG.markdown

source-repository head
  type:     git
  location: https://github.com/jberryman/hashabler.git

-- I guess we depend on impl(ghc) at this point, but maybe we can fix that
Flag integer-gmp
  Description: Are we using integer-gmp to provide fast Integer instances?
  Default: True

Flag dev
  Description: To build tests, executables and benchmarks do `configure -fdev --enable-tests` and run the built executables by hand (i.e. not with `cabal test` etc.; we put all our different executables in test-suite sections in order to hide their dependencies from hackage)
  Default: False
  -- TODO did this solve our issues with having executable sections and hackage deps?:
  Manual: True

library
  if flag(dev)
      CPP-Options:     -DEXPORT_INTERNALS

  exposed-modules:     Data.Hashabler
  other-modules:       MachDeps, Data.Hashabler.Internal, Data.Hashabler.SipHash

  build-depends:       base >=4.6 && <4.10
                     , array >= 0.4
                     , bytestring
                     , text >= 1.1.1.3
                     , primitive
                     , ghc-prim
                     -- For endianness test:
                     , template-haskell
  if impl(ghc < 7.9)
    -- for Data.Functor.Identity
    build-depends:     transformers

  if flag(integer-gmp)
      Build-depends:   integer-gmp >= 0.2

  hs-source-dirs:      src
  default-language:    Haskell2010
  ghc-options: -Wall -fwarn-tabs -O2 -funbox-strict-fields


-- I'm not sure how to make this test-suite and still be able to get
-- conditional export list in library:
test-suite tests
  type: exitcode-stdio-1.0
  default-language:    Haskell2010
  hs-source-dirs:      tests
  main-is:             Main.hs
  other-modules:       Consistency
                     , Vectors.FNV
                     , Vectors.SipHash

  ghc-options:         -Wall -O2 -threaded -funbox-strict-fields -fno-ignore-asserts
  if flag(dev)
      buildable: True
      build-depends:       base
                         , hashabler
                         , directory
                         , bytestring
                         , text
                         , primitive
                         , random
                         , QuickCheck
      if flag(integer-gmp)
          Build-depends:   integer-gmp >= 0.2
  else 
      buildable: False


benchmark bench
  type: exitcode-stdio-1.0
  default-language:    Haskell2010
  main-is:             Main.hs
  ghc-options:         -Wall -O2 -threaded -funbox-strict-fields
  hs-source-dirs:      benchmarks
  if flag(dev)
      buildable: True
      build-depends:   base
                     , array
                     , bytestring
                     , text
                     , primitive

                     , hashabler
                     , hashable
                     , criterion
                     , deepseq
  else 
      buildable: False


-- Some code to visualize distributions of hashes.
benchmark viz
  type: exitcode-stdio-1.0
  default-language:    Haskell2010
  main-is:             Main.hs
  ghc-options:         -Wall -O2 -threaded -funbox-strict-fields
  hs-source-dirs:      viz
  if flag(dev)
      buildable: True
      build-depends:   base
                     , array
                     , bytestring
                     , text
                     , primitive
                     , JuicyPixels
                     , mwc-random
                     , vector
                     
                     , hashabler
                     , hashable
  else 
      buildable: False


-- For dumping core
benchmark core
  type: exitcode-stdio-1.0
 -- find dist/build/core/core-tmp -name '*dump-simpl'
  if flag(dev)
      buildable: True
      build-depends:       
           base
         , hashabler
  else 
      buildable: False

  if flag(dev)
      ghc-options: -ddump-to-file -ddump-simpl -dsuppress-module-prefixes -dsuppress-uniques -ddump-core-stats -ddump-inlinings
      ghc-options: -O2  -rtsopts  
 
  -- Either do threaded for eventlogging and simple timing...
  --ghc-options: -threaded -eventlog
  -- and run e.g. with +RTS -N -l

  -- ...or do non-threaded runtime
  --ghc-prof-options: -fprof-auto
  --Relevant profiling RTS settings:  -xt
  -- TODO also check out +RTS -A10m, and look at output of -sstderr

  -- hs-source-dirs: core-example
  main-is: core.hs
  default-language:    Haskell2010


-- Testing bit-independence and avalanche properties of straight FNV-1a, as
-- well as experiments to validate the idea of using multiple parallel running
-- hashes to get more hash bits.