class Regexp::Expression::CharacterSet::Range

# File lib/regexp_parser/expression/classes/character_set/range.rb, line 10
def <<(exp)
  complete? and raise Regexp::Parser::Error,
    "Can't add more than 2 expressions to a Range"
  super
end

# File lib/regexp_parser/expression/classes/character_set/range.rb, line 16
def complete?
  count == 2
end

# File lib/regexp_parser/expression/classes/character_set/range.rb, line 6
def ts
  (head = expressions.first) ? head.ts : @ts
end