Moved the maskable instance definitions within their corresponding modules.

[hath.git] / src / IPv4Address.hs

diff --git a/src/IPv4Address.hs b/src/IPv4Address.hs
index 31ad7bd43965a56f7d243ab932ddbb4dc79dac33..ca6f3d331c243948e4e0567a5f57900fa76b2396 100644 (file)
--- a/src/IPv4Address.hs
+++ b/src/IPv4Address.hs
@@ -1,5 +1,6 @@
 module IPv4Address
 ( ipv4address_from_octets,
+  ipv4address_tests,
   IPv4Address(None),
   max_octet1,
   max_octet2,
@@ -14,10 +15,13 @@ module IPv4Address
   octet2,
   octet3,
   octet4
-)
-  where
+) where
+
+import Test.HUnit
+import Test.QuickCheck
 
 import qualified Bit as B
+import Maskable
 import Maskbits
 import Octet
 
@@ -41,6 +45,62 @@ instance Show IPv4Address where
           oct4 = (octet4 addr)
 
 
+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)
+
+
 -- We don't export our constructor so this function is the only
 -- way to construct an address from octets. As a result, we can
 -- return IPv4Address.None in response to being passed one of more
@@ -339,3 +399,30 @@ most_sig_bit_different addr1 addr2
     oct2b = (octet2 addr2)
     oct3b = (octet3 addr2)
     oct4b = (octet4 addr2)
+
+
+
+-- HUnit Tests
+mk_testaddr :: Int -> Int -> Int -> Int -> IPv4Address
+mk_testaddr a b c d =
+    IPv4Address oct1 oct2 oct3 oct4
+    where
+      oct1 = octet_from_int a
+      oct2 = octet_from_int b
+      oct3 = octet_from_int c
+      oct4 = octet_from_int d
+
+
+test_most_sig_bit_different1 :: Test
+test_most_sig_bit_different1 =
+    TestCase $ assertEqual "10.1.1.0 and 10.1.0.0 differ in bit 24" TwentyFour (most_sig_bit_different (mk_testaddr 10 1 1 0) (mk_testaddr 10 1 0 0))
+
+
+test_most_sig_bit_different2 :: Test
+test_most_sig_bit_different2 =
+    TestCase $ assertEqual "10.1.2.0 and 10.1.1.0 differ in bit 23" TwentyThree (most_sig_bit_different (mk_testaddr 10 1 2 0) (mk_testaddr 10 1 1 0))
+
+
+ipv4address_tests :: [Test]
+ipv4address_tests = [ test_most_sig_bit_different1,
+                      test_most_sig_bit_different2 ]