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A JSON Schema Validator with complete support for the latest specifications.

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jsv lib jsv format_validator default optional uuid.ex
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lib/jsv/format_validator/default/optional/uuid.ex 

# credo:disable-for-this-file Credo.Check.Refactor.CyclomaticComplexity



defmodule JSV.FormatValidator.Default.Optional.UUID do

  @moduledoc false

  defguard is_hex(n) when n in ?0..?9 or n in ?a..?f or n in ?A..?F



  @doc false

  @spec parse_uuid(binary) :: {:ok, binary} | {:error, :invalid_uuid_format}

  def parse_uuid(

        <<a1, a2, a3, a4, a5, a6, a7, a8, ?-, b1, b2, b3, b4, ?-, c1, c2, c3, c4, ?-, d1, d2, d3, d4, ?-, e1, e2, e3,

          e4, e5, e6, e7, e8, e9, e10, e11, e12>> = data

      )

      when is_hex(a1) and

             is_hex(a2) and

             is_hex(a3) and

             is_hex(a4) and

             is_hex(a5) and

             is_hex(a6) and

             is_hex(a7) and

             is_hex(a8) and

             is_hex(b1) and

             is_hex(b2) and

             is_hex(b3) and

             is_hex(b4) and

             is_hex(c1) and

             is_hex(c2) and

             is_hex(c3) and

             is_hex(c4) and

             is_hex(d1) and

             is_hex(d2) and

             is_hex(d3) and

             is_hex(d4) and

             is_hex(e1) and

             is_hex(e2) and

             is_hex(e3) and

             is_hex(e4) and

             is_hex(e5) and

             is_hex(e6) and

             is_hex(e7) and

             is_hex(e8) and

             is_hex(e9) and

             is_hex(e10) and

             is_hex(e11) and

             is_hex(e12) do

    {:ok, data}

  end



  #

  def parse_uuid(_) do

    {:error, :invalid_uuid_format}

  end

end