class Sass::Tree::RuleNode

def ==(other)
  self.class == other.class && rule == other.rule && super
end

def add_rules(node)
  @rule = Sass::Util.strip_string_array(
    Sass::Util.merge_adjacent_strings(@rule + ["\n"] + node.rule))
  try_to_parse_non_interpolated_rules
end

def continued?
  last = @rule.last
  last.is_a?(String) && last[-1] == ?,
end

def debug_info
  {:filename => filename && ("file://" + Sass::Util.escape_uri(File.expand_path(filename))),
   :line => line}
end

def filename=(filename)
  @parsed_rules.filename = filename if @parsed_rules
  super
end

def initialize(rule, selector_source_range = nil)
  if rule.is_a?(Sass::Selector::CommaSequence)
    @rule = [rule.to_s]
    @parsed_rules = rule
  else
    merged = Sass::Util.merge_adjacent_strings(rule)
    @rule = Sass::Util.strip_string_array(merged)
    try_to_parse_non_interpolated_rules
  end
  @selector_source_range = selector_source_range
  @tabs = 0
  super()
end

def invisible?
  resolved_rules.members.all? {|seq| seq.has_placeholder?}
end

def line=(line)
  @parsed_rules.line = line if @parsed_rules
  super
end

def try_to_parse_non_interpolated_rules
  if @rule.all? {|t| t.kind_of?(String)}
    # We don't use real filename/line info because we don't have it yet.
    # When we get it, we'll set it on the parsed rules if possible.
    parser = Sass::SCSS::StaticParser.new(@rule.join.strip, nil, nil, 1)
    # rubocop:disable RescueModifier
    @parsed_rules = parser.parse_selector rescue nil
    # rubocop:enable RescueModifier
  end
end