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bin_struct

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BinStruct is a library which provides you rich set of tools for parsing/encoding binaries

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bin_struct lib bin_struct macro structs fields_map.ex
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lib/bin_struct/macro/structs/fields_map.ex 

defmodule BinStruct.Macro.Structs.FieldsMap do



  @moduledoc false



  alias BinStruct.Macro.Structs.FieldsMap

  alias BinStruct.Macro.Structs.Field

  alias BinStruct.Macro.Structs.VirtualField



  defstruct [

    :fields_map

  ]



  def new(fields, env) do

    %FieldsMap{

      fields_map: fields_make_map(fields, env)

    }

  end



  def get_field_by_name(self, field_name) do



    %{ fields_map: fields_map } = self



    case fields_map do

      %{ ^field_name => field } -> field

      _ -> raise "Field name: #{inspect(field_name)} was requested, but not exists"

    end



  end



  defp fields_make_map(fields, _env) do



    Enum.map(

      fields,

      fn field ->



        case field do



          %Field{} = field ->



            %Field{name: name} = field



            { name, field }



          %VirtualField{} = virtual_field ->



            %VirtualField{ name: name } = virtual_field



            { name, virtual_field }



        end



      end

    ) |> Enum.into(%{})



  end





end