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elixir_script

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ElixirScript: compiles Elixir code to JavaScript

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elixir_script lib elixir_script passes java_script_code.ex
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lib/elixir_script/passes/java_script_code.ex 

defmodule ElixirScript.Passes.JavaScriptCode do

  @moduledoc false

  alias ESTree.Tools.{ Builder, Generator }



  def execute(compiler_data, _) do

    parent = self



    data = Enum.map(compiler_data.data, fn({module_name, module_data}) ->



      spawn_link fn ->

        module_data = compile(module_data)

        result = {module_name, module_data}

        send parent, {self, result }

      end



    end)

    |> Enum.map(fn pid ->

      receive do

        {^pid, result} ->

          result

      end

    end)



    %{ compiler_data | data: data }

  end



  defp compile(%{load_only: true} = module_data) do

    module_data

  end





  defp compile(module_data) do

    js_ast = Builder.program(module_data.javascript_ast)



    js_code = js_ast

    |> prepare_js_ast

    |> Generator.generate



    Map.put(module_data, :javascript_code, js_code)

  end



  defp prepare_js_ast(js_ast) do

    case js_ast do

      modules when is_list(modules) ->

        modules

        |> Enum.reduce([], &(&2 ++ &1.body))

        |> Builder.program

      %ElixirScript.Translator.Group{ body: body } ->

        Builder.program(body)

      %ElixirScript.Translator.Empty{ } ->

        Builder.program([])

      _ ->

        js_ast

    end

  end

end