require 'bit_struct/field'

module BitStruct

  class NestedField < Field

    def initialize( name, nested_class, description = nil )
      super name, nil, description
      @nested_class = nested_class
      @nested = nested_class.new
    end

    def length
      @nested_class.length
    end

    def read( slicer )
      bytes = slicer.get_bytes
      @nested.set_data bytes
      @nested
    end

    def write( slicer, new_value )
      # TODO: What should be allowed here?
      # TODO: new_value.is_a? String
      # TODO: new_value.is_a? Array
      # TODO: new_value.is_a? StructBase
      raise "NYI"
    end

  end

end