+instance Arbitrary IPv4Address where
+ arbitrary = do
+ oct1 <- arbitrary :: Gen Octet
+ oct2 <- arbitrary :: Gen Octet
+ oct3 <- arbitrary :: Gen Octet
+ oct4 <- arbitrary :: Gen Octet
+ return (IPv4Address oct1 oct2 oct3 oct4)
+
+ coarbitrary _ = variant 0
+
+
+
+instance Maskable IPv4Address where
+ apply_mask _ Maskbits.None = IPv4Address.None
+ apply_mask addr mask
+ | mask == ThirtyTwo = ipv4address_from_octets oct1 oct2 oct3 oct4
+ | mask == ThirtyOne = ipv4address_from_octets oct1 oct2 oct3 (apply_mask oct4 Seven)
+ | mask == Thirty = ipv4address_from_octets oct1 oct2 oct3 (apply_mask oct4 Six)
+ | mask == TwentyNine = ipv4address_from_octets oct1 oct2 oct3 (apply_mask oct4 Five)
+ | mask == TwentyEight = ipv4address_from_octets oct1 oct2 oct3 (apply_mask oct4 Four)
+ | mask == TwentySeven = ipv4address_from_octets oct1 oct2 oct3 (apply_mask oct4 Three)
+ | mask == TwentySix = ipv4address_from_octets oct1 oct2 oct3 (apply_mask oct4 Two)
+ | mask == TwentyFive = ipv4address_from_octets oct1 oct2 oct3 (apply_mask oct4 One)
+ | mask == TwentyFour = ipv4address_from_octets oct1 oct2 oct3 (min_octet)
+ | mask == TwentyThree = ipv4address_from_octets oct1 oct2 (apply_mask oct3 Seven) (min_octet)
+ | mask == TwentyTwo = ipv4address_from_octets oct1 oct2 (apply_mask oct3 Six) (min_octet)
+ | mask == TwentyOne = ipv4address_from_octets oct1 oct2 (apply_mask oct3 Five) (min_octet)
+ | mask == Twenty = ipv4address_from_octets oct1 oct2 (apply_mask oct3 Four) (min_octet)
+ | mask == Nineteen = ipv4address_from_octets oct1 oct2 (apply_mask oct3 Three) (min_octet)
+ | mask == Eighteen = ipv4address_from_octets oct1 oct2 (apply_mask oct3 Two) (min_octet)
+ | mask == Seventeen = ipv4address_from_octets oct1 oct2 (apply_mask oct3 One) (min_octet)
+ | mask == Sixteen = ipv4address_from_octets oct1 oct2 (min_octet) (min_octet)
+ | mask == Fifteen = ipv4address_from_octets oct1 (apply_mask oct2 Seven) (min_octet) (min_octet)
+ | mask == Fourteen = ipv4address_from_octets oct1 (apply_mask oct2 Six) (min_octet) (min_octet)
+ | mask == Thirteen = ipv4address_from_octets oct1 (apply_mask oct2 Five) (min_octet) (min_octet)
+ | mask == Twelve = ipv4address_from_octets oct1 (apply_mask oct2 Four) (min_octet) (min_octet)
+ | mask == Eleven = ipv4address_from_octets oct1 (apply_mask oct2 Three) (min_octet) (min_octet)
+ | mask == Ten = ipv4address_from_octets oct1 (apply_mask oct2 Two) (min_octet) (min_octet)
+ | mask == Nine = ipv4address_from_octets oct1 (apply_mask oct2 One) (min_octet) (min_octet)
+ | mask == Eight = ipv4address_from_octets oct1 (min_octet) (min_octet) (min_octet)
+ | mask == Seven = ipv4address_from_octets (apply_mask oct1 Seven) (min_octet) (min_octet) (min_octet)
+ | mask == Six = ipv4address_from_octets (apply_mask oct1 Six) (min_octet) (min_octet) (min_octet)
+ | mask == Five = ipv4address_from_octets (apply_mask oct1 Five) (min_octet) (min_octet) (min_octet)
+ | mask == Four = ipv4address_from_octets (apply_mask oct1 Four) (min_octet) (min_octet) (min_octet)
+ | mask == Three = ipv4address_from_octets (apply_mask oct1 Three) (min_octet) (min_octet) (min_octet)
+ | mask == Two = ipv4address_from_octets (apply_mask oct1 Two) (min_octet) (min_octet) (min_octet)
+ | mask == One = ipv4address_from_octets (apply_mask oct1 One) (min_octet) (min_octet) (min_octet)
+ | mask == Zero = ipv4address_from_octets (min_octet) (min_octet) (min_octet) (min_octet)
+ | otherwise = IPv4Address.None
+ where
+ oct1 = (octet1 addr)
+ oct2 = (octet2 addr)
+ oct3 = (octet3 addr)
+ oct4 = (octet4 addr)
+
+