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Low-level elixir library to read, write, hash, and sign XDR primitive constructs used in the Stellar network.

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stellar_base lib xdr base optional_uint32.ex
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lib/xdr/base/optional_uint32.ex 

defmodule StellarBase.XDR.OptionalUInt32 do

  @moduledoc """

  Representation of Stellar `OptionalUInt32` type.

  """

  alias StellarBase.XDR.UInt32



  @behaviour XDR.Declaration



  @optional_spec XDR.Optional.new(UInt32)



  @type datum :: UInt32.t() | nil



  @type t :: %__MODULE__{datum: datum()}



  defstruct [:datum]



  @spec new(datum :: datum()) :: t()

  def new(datum \\ nil), do: %__MODULE__{datum: datum}



  @impl true

  def encode_xdr(%__MODULE__{datum: datum}) do

    datum

    |> XDR.Optional.new()

    |> XDR.Optional.encode_xdr()

  end



  @impl true

  def encode_xdr!(%__MODULE__{datum: datum}) do

    datum

    |> XDR.Optional.new()

    |> XDR.Optional.encode_xdr!()

  end



  @impl true

  def decode_xdr(bytes, optional_spec \\ @optional_spec)



  def decode_xdr(bytes, optional_spec) do

    case XDR.Optional.decode_xdr(bytes, optional_spec) do

      {:ok, {%XDR.Optional{type: datum}, rest}} ->

        {:ok, {new(datum), rest}}



      {:ok, {nil, rest}} ->

        {:ok, {new(), rest}}



      error ->

        error

    end

  end



  @impl true

  def decode_xdr!(bytes, optional_spec \\ @optional_spec)



  def decode_xdr!(bytes, optional_spec) do

    case XDR.Optional.decode_xdr!(bytes, optional_spec) do

      {%XDR.Optional{type: datum}, rest} -> {new(datum), rest}

      {nil, rest} -> {new(), rest}

    end

  end

end