traverse JSON::Any Object

walk_method

  def walk(prefix : Array(String))
    @item = @j if prefix.size == 0
    if @item.nil?
      puts "walk: #{prefix.join(".")} is Nil THIS SHOULD NOT HAPPEN"
      return
    end
    case @item.class
    when Hash
      @item.as_h.keys.each do |k|
        puts "walk: #{prefix + [k]} ia a Hash"
        walk(prefix + [k])
      end # each
    when Array
      puts "walk: #{prefix.join(".")} is an Array"
      puts "["
      @item.as_a.each_with_index do |v, i|
        walk(prefix + [i.to_s])
      end # each_with_index
      puts "]"
    else
      puts "walk: #{prefix.join(".")} is a #{@item.class}"
    end # case
  end # def walk