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exmatch

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This library is meant to provide an ergonomic way to match, compare and bind data in complex types such as maps and structs.

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exmatch lib options.ex
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lib/options.ex 

defmodule ExMatch.Options do

  defstruct [:opts]



  def parse({:%{}, meta, opts_fields}, parse_ast) do

    opts_fields =

      Enum.map(opts_fields, fn {struct, struct_opts} ->

        {[], map} = parse_ast.(struct_opts, %{})

        {struct, map}

      end)



    opts = {:%{}, meta, opts_fields}



    quote do

      %ExMatch.Options{opts: unquote(opts)}

    end

  end



  def parse(other, _parse_ast) do

    cond do

      Macro.quoted_literal?(other) ->

        raise "options must be a map or an expression returning a map"



      true ->

        other

    end

  end

end