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unifex

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Tool for generating interfaces between native C code and Elixir

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unifex lib unifex specs_parser.ex
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lib/unifex/specs_parser.ex 

defmodule Unifex.SpecsParser do

  @moduledoc """

  Module that handles parsing Unifex specs for native boilerplate code generation.



  For information on how to create such specs, see `Unifex.Specs` module.

  """



  @type parsed_specs_t :: [{:module, module()} | {:fun_specs, tuple()}]



  @doc """

  Parses Unifex specs of native functions.

  """

  @spec parse_specs(specs :: Macro.t()) :: parsed_specs_t()

  def parse_specs(specs) do

    {_res, binds} = Code.eval_string(specs, [{:unifex_config__, []}], make_env())

    binds |> Keyword.fetch!(:unifex_config__) |> Enum.reverse()

  end



  # Returns clear __ENV__ with proper functions/macros imported. Useful for invoking

  # user code without possibly misleading macros and aliases from the current scope,

  # while providing needed functions/macros.

  defp make_env() do

    {env, _binds} =

      Code.eval_quoted(

        quote do

          import Unifex.Specs

          __ENV__

        end

      )



    env

  end

end