class Liquid::Comment

def blank?
  true
end

def parse_body(body, tokenizer)
  if parse_context.depth >= MAX_DEPTH
    raise StackLevelError, "Nesting too deep"
  end
  parse_context.depth += 1
  comment_tag_depth = 1
  begin
    # Consume tokens without creating child nodes.
    # The children tag doesn't require to be a valid Liquid except the comment and raw tag.
    # The child comment and raw tag must be closed.
    while (token = tokenizer.send(:shift))
      tag_name = if tokenizer.for_liquid_tag
        next if token.empty? || token.match?(BlockBody::WhitespaceOrNothing)
        tag_name_match = BlockBody::LiquidTagToken.match(token)
        next if tag_name_match.nil?
        tag_name_match[1]
      else
        token =~ BlockBody::FullToken
        Regexp.last_match(2)
      end
      case tag_name
      when "raw"
        parse_raw_tag_body(tokenizer)
      when "comment"
        comment_tag_depth += 1
      when "endcomment"
        comment_tag_depth -= 1
      end
      if comment_tag_depth.zero?
        parse_context.trim_whitespace = (token[-3] == WhitespaceControl) unless tokenizer.for_liquid_tag
        return false
      end
    end
    raise_tag_never_closed(block_name)
  ensure
    parse_context.depth -= 1
  end
  false
end

def parse_raw_tag_body(tokenizer)
  while (token = tokenizer.send(:shift))
    return if token =~ BlockBody::FullTokenPossiblyInvalid && "endraw" == Regexp.last_match(2)
  end
  raise_tag_never_closed("raw")
end

def render_to_output_buffer(_context, output)
  output
end

def unknown_tag(_tag, _markup, _tokens)
end