defmodule Formular.DefaultFunctions do
  @moduledoc false

  @supported [
    !: 1,
    !=: 2,
    !==: 2,
    &&: 2,
    *: 2,
    +: 1,
    +: 2,
    ++: 2,
    -: 1,
    -: 2,
    --: 2,
    ..: 2,
    "..//": 3,
    /: 2,
    <: 2,
    <=: 2,
    <>: 2,
    ==: 2,
    =~: 2,
    >: 2,
    >=: 2,
    abs: 1,
    and: 2,
    ceil: 1,
    div: 2,
    floor: 1,
    get_and_update_in: 2,
    get_and_update_in: 3,
    get_in: 2,
    hd: 1,
    if: 2,
    in: 2,
    inspect: 2,
    is_atom: 1,
    is_binary: 1,
    is_bitstring: 1,
    is_boolean: 1,
    is_exception: 1,
    is_exception: 2,
    is_float: 1,
    is_function: 1,
    is_integer: 1,
    is_list: 1,
    is_map: 1,
    is_map_key: 2,
    is_nil: 1,
    is_number: 1,
    is_pid: 1,
    is_port: 1,
    is_reference: 1,
    is_struct: 1,
    is_struct: 2,
    is_tuple: 1,
    length: 1,
    map_size: 1,
    max: 2,
    min: 2,
    not: 1,
    or: 2,
    pop_in: 1,
    pop_in: 2,
    put_elem: 3,
    put_in: 2,
    put_in: 3,
    rem: 2,
    round: 1,
    sigil_C: 2,
    sigil_D: 2,
    sigil_N: 2,
    sigil_R: 2,
    sigil_S: 2,
    sigil_T: 2,
    sigil_U: 2,
    sigil_W: 2,
    sigil_c: 2,
    sigil_r: 2,
    sigil_s: 2,
    sigil_w: 2,
    struct: 2,
    struct!: 2,
    tap: 2,
    then: 2,
    tl: 1,
    to_charlist: 1,
    to_string: 1,
    trunc: 1,
    tuple_size: 1,
    unless: 2,
    |>: 2,
    ||: 2
  ]

  def kernel_functions do
    @supported
    |> Enum.filter(fn {f, arity} ->
      function_exported?(Kernel, f, arity)
    end)
    |> Enum.sort()
  end

  def kernel_macros do
    @supported
    |> Enum.filter(fn {f, arity} ->
      macro_exported?(Kernel, f, arity)
    end)
    |> Enum.sort()
  end
end