class FFI::StructGenerator

def generate_layout
  buf = ""
  @fields.each_with_index do |field, i|
    if buf.empty?
      buf << "layout :#{field.name}, :#{field.type}, #{field.offset}"
    else
      buf << "       :#{field.name}, :#{field.type}, #{field.offset}"
    end
    if i < @fields.length - 1
      buf << ",\n"
    end
  end
  buf
end