cabal-version:       2.2
name:                tree-traversals
version:             0.1.1.0
synopsis:            Functions and newtype wrappers for traversing Trees
description:         
  The tree-traversals package defines
  <https://en.wikipedia.org/wiki/Tree_traversal#Types in-order, pre-order, post-order, level-order, and reversed level-order traversals>
  for tree-like types:
  .
  > inorder, preorder, postorder, levelorder, rlevelorder
  >   :: (TreeLike tree, Applicative f) => (a -> f b) -> tree a -> f (tree b) 
  .
  The package also provides newtype wrappers for the various traversals so they
  may be used with @traverse@, i.e.
  .
  > traverse f (InOrder tree) = inorder f tree
  > traverse f (PreOrder tree) = preorder f tree
  > traverse f (PostOrder tree) = postorder f tree
  > traverse f (LevelOrder tree) = levelorder f tree
  > traverse f (RLevelOrder tree) = rlevelorder f tree
  .
  To implement the various orders, the tree-traversals package provides the
  'Control.Applicative.Phases.Phases' applicative transformer for organizing effects
  into distinct phases.
  .
  Instances of 'Data.Traversable.TreeLike.TreeLike' are provided for
  rose trees ('Data.Tree.Tree'), 
  binary trees ('Data.BinaryTree.BinaryTree'),
  forests ('Data.Traversable.TreeLike.Forest'),
  and algebraic combinations of trees (@'Data.Functor.Compose.Compose' outerTree innerTree@,
  @'Data.Functor.Product' fstTree sndTree@, @'Data.Functor.Sum' leftTree rightTree@).

homepage:            https://github.com/rampion/tree-traversals
license:             CC0-1.0
license-file:        LICENSE
author:              Noah Luck Easterly
maintainer:          noah.easterly@gmail.com
category:            Data
build-type:          Simple
extra-source-files:  ChangeLog.md
                  ,  README.md

source-repository head
  type: git
  location: git://github.com/rampion/tree-traversals.git

source-repository this
  type: git
  location: git://github.com/rampion/tree-traversals.git
  tag: v0.1.0.0

flag Development
  description: Enable all warnings and upgrade warnings to errors
  default: False
  manual: True

library
  exposed-modules: Control.Applicative.Phases
                 , Data.BinaryTree
                 , Data.Monoid.TreeDiagram
                 , Data.Traversable.TreeLike
  -- other-extensions:    
  build-depends:       base >=4.10 && <4.13
               ,       containers
  hs-source-dirs:      src
  default-language:    Haskell2010
  if flag(development)
    ghc-options: -Wall -Wextra -Werror

test-suite doctests
  type: exitcode-stdio-1.0
  main-is: doctests.hs
  build-depends: base >=4.10 && <4.13
               , doctest >=0.13
               , containers
               , mtl >=2.2.1
  default-language: Haskell2010
  if flag(development)
    ghc-options: -Wall -Wextra -Werror