Contents

require 'ipv4address'

grammar IPv6Address
  include IPv4Address

  # A 128-bit IPv6 address is divided into eight 16-bit pieces. Each
  # piece is represented numerically in case-insensitive hexadecimal,
  # using one to four hexadecimal digits (leading zeroes are permitted).
  # The eight encoded pieces are given most-significant first, separated
  # by colon characters. Optionally, the least-significant two pieces
  # may instead be represented in IPv4 address textual format. A
  # sequence of one or more consecutive zero-valued 16-bit pieces within
  # the address may be elided, omitting all their digits and leaving
  # exactly two consecutive colons in their place to mark the elision.
  rule IPv6address
    (                         (h16 ":")6*6 ls32
    |                    "::" (h16 ":")5*5 ls32
    |  h16             ? "::" (h16 ":")4*4 ls32
    | (h16 (":" h16)*1)? "::" (h16 ":")3*3 ls32
    | (h16 (":" h16)*2)? "::" (h16 ":")2*2 ls32
    | (h16 (":" h16)*3)? "::"  h16 ":"     ls32
    | (h16 (":" h16)*4)? "::"              ls32
    | (h16 (":" h16)*5)? "::"              h16
    | (h16 (":" h16)*6)? "::"
    ) {
      def version; 6 end
    }
  end

  # 16-bit address represented in hexadecimal.
  rule h16
    HEXDIG 1*4
  end

  # Least-significant 32 bits of address.
  rule ls32
    (h16 ":" h16) | IPv4address
  end

  rule HEXDIG
    DIGIT | [a-fA-F] # Hexadecimal should be case-insensitive.
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
citrus-2.3.7	examples/ipv6address.citrus
citrus-2.3.6	examples/ipv6address.citrus
citrus-2.3.5	examples/ipv6address.citrus
citrus-2.3.4	examples/ipv6address.citrus
citrus-2.3.3	examples/ipv6address.citrus