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A pure Elixir implementation of Google Protobuf.

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protobuf lib protobuf json json_library.ex
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lib/protobuf/json/json_library.ex 

defmodule Protobuf.JSON.JSONLibrary do

  @moduledoc false

  # Uses `JSON` for Elixir >= 1.18, Jason if Elixir < 1.18 and Jason available,

  # or returns error otherwise



  cond do

    Code.ensure_loaded?(JSON) ->

      def encode_to_iodata(encodable) do

        try do

          {:ok, JSON.encode_to_iodata!(encodable)}

        rescue

          exception ->

            {:error, exception}

        end

      end



      def decode(data) do

        case JSON.decode(data) do

          {:ok, decoded} -> {:ok, decoded}

          {:error, error} -> {:error, Protobuf.JSON.DecodeError.new(error)}

        end

      end



    Code.ensure_loaded?(Jason) ->

      def encode_to_iodata(encodable), do: Jason.encode_to_iodata(encodable)

      def decode(data), do: Jason.decode(data)



    true ->

      def encode_to_iodata(_), do: {:error, EncodeError.new(:no_json_lib)}

      def decode(_), do: {:error, EncodeError.new(:no_json_lib)}

  end

end