module CategoricalArrays

export CategoricalPool, CategoricalValue

export AbstractCategoricalArray, AbstractCategoricalVector, AbstractCategoricalMatrix,

CategoricalArray, CategoricalVector, CategoricalMatrix

export LevelsException

export categorical, compress, decompress, droplevels!, levels, levels!, levelcode,

isordered, ordered!

export cut, recode, recode!

import DataAPI: unwrap

export unwrap

using DataAPI

using Missings

using Printf

import Compat

# JuliaLang/julia#36810

if VERSION < v"1.5.2"

Base.OrderStyle(::Type{Union{}}) = Base.Ordered()

end

include("typedefs.jl")

include("pool.jl")

include("value.jl")

include("array.jl")

include("missingarray.jl")

include("subarray.jl")

include("extras.jl")

include("recode.jl")

include("deprecated.jl")

if !isdefined(Base, :get_extension)

using Requires: @require

end

@static if !isdefined(Base, :get_extension)

function __init__()

@require JSON="682c06a0-de6a-54ab-a142-c8b1cf79cde6" include("../ext/CategoricalArraysJSONExt.jl")

@require RecipesBase="3cdcf5f2-1ef4-517c-9805-6587b60abb01" include("../ext/CategoricalArraysRecipesBaseExt.jl")

@require SentinelArrays="91c51154-3ec4-41a3-a24f-3f23e20d615c" include("../ext/CategoricalArraysSentinelArraysExt.jl")

@require StructTypes="856f2bd8-1eba-4b0a-8007-ebc267875bd4" include("../ext/CategoricalArraysStructTypesExt.jl")

end

end

end