class OpenFastStruct

# File lib/ofstruct.rb, line 4
def initialize(args = {})
  @members = {}
  update(args)
end

# File lib/ofstruct.rb, line 44
def ==(other)
  other.is_a?(self.class) && to_h == other.to_h
end

# File lib/ofstruct.rb, line 9
def delete_field(key)
  assign(key, self.class.new)
end

# File lib/ofstruct.rb, line 13
def each_pair
  @members.each_pair
end

# File lib/ofstruct.rb, line 35
def inspect
  "#<#{self.class}#{@members.map { |key, value| " :#{key}=#{value.inspect}" }.join}>"
end

# File lib/ofstruct.rb, line 40
def to_ary
  nil
end

# File lib/ofstruct.rb, line 22
def to_h
  @members.merge(@members) do |_, value|
    case value
    when Array
      value.map(&:to_h)
    when self.class
      value.to_h
    else
      value
    end
  end
end

# File lib/ofstruct.rb, line 17
def update(args)
  ensure_hash!(args)
  args.each { |key, value| assign(key, value) }
end

# File lib/ofstruct.rb, line 64
def assign(key, value)
  @members[key.to_sym] = process(value)
end

# File lib/ofstruct.rb, line 50
def ensure_hash!(args)
  raise ArgumentError unless args.is_a?(Hash)
end

# File lib/ofstruct.rb, line 54
def method_missing(name, *args)
  @members.fetch(name) do
    if name[-1] == "="
      assign(name[0..-2], args.first)
    else
      delete_field(name)
    end
  end
end

# File lib/ofstruct.rb, line 68
def process(data)
  case data
  when Hash
    self.class.new(data)
  when Array
    data.map { |element| process(element) }
  else
    data
  end
end