class Treetop::Compiler::SequenceElementAccessorModule

def compile(idx, builder, rule)
  super
  builder.module_declaration(module_name) do
    elements_by_name = sequence_elements.inject({}){|h,e| (h[e.label_name.to_s] ||= []) << e; h}
    sequence_elements.each_with_index do |element, index|
      if element.label_name
        repetitions = elements_by_name[element.label_name.to_s]
        label_name = element.label_name + (repetitions.size > 1 ? (repetitions.index(element)+1).to_s : "")
        builder.method_declaration(label_name) do
          builder << "elements[#{index}]"
        end
        builder.newline unless index == sequence_elements.size - 1
      end
    end
  end
end

def initialize(sequence_elements)
  @sequence_elements = sequence_elements
end