[ip6] rename methods fully initializing an Ip6::Address/Prefix (#13169)

This commit renames several methods in `Ip6::Address`,
`Ip6::InterfaceIdentifier`, `Ip6::Prefix`, and `Ip4::Address` that
fully initialize the object from `Set...()` to `Init...()`.

This creates a clear semantic distinction in the API:
- `Init...()`: Fully (re-)initializing the object.
- `Set...()`: Modifies a specific property or a sub-component of
   the object (e.g., `SetPrefix()`,  `SetLocator()`,
   `SetSubnetId()`).

Some examples of renames include:
- `SetFromExtAddress()` -> `InitFromExtAddress()`
- `SetToLocator()` -> `InitAsLocator()`
- `SetToLinkLocalAddress()` -> `InitAsLinkLocalAddress()`
- `SetToRoutingLocator()` -> `InitAsRoutingLocator()`
- `SetToAnycastLocator()` -> `InitAsAnycastLocator()`
- `SetToIp4Mapped()` -> `InitAsIp4Mapped()`

All calls to these methods across the codebase have been updated
to reflect the new names.

tests/unit/test_child.cpp

@@ -109,7 +109,7 @@ void TestChildIp6Address(void)
     const uint8_t            meshLocalIidArray[] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88};
     Ip6::InterfaceIdentifier meshLocalIid;
 
-    meshLocalIid.SetBytes(meshLocalIidArray);
+    meshLocalIid.InitFrom(meshLocalIidArray);
 
     sInstance = testInitInstance();
     VerifyOrQuit(sInstance != nullptr);

tests/unit/test_ip_address.cpp

@@ -406,7 +406,7 @@ void TestIp6AddressSetPrefix(void)
         for (size_t prefixLength = 0; prefixLength <= sizeof(Ip6::Address) * kBitsPerByte; prefixLength++)
         {
             ip6Prefix.Clear();
-            ip6Prefix.Set(prefix, prefixLength);
+            ip6Prefix.InitFrom(prefix, prefixLength);
 
             address = allZeroAddress;
             address.SetPrefix(ip6Prefix);
@@ -442,7 +442,7 @@ Ip6::Prefix PrefixFrom(const char *aAddressString, uint8_t aPrefixLength)
     Ip6::Address address;
 
     SuccessOrQuit(address.FromString(aAddressString));
-    prefix.Set(address.GetBytes(), aPrefixLength);
+    prefix.InitFrom(address.GetBytes(), aPrefixLength);
 
     return prefix;
 }
@@ -466,7 +466,7 @@ void TestIp6Prefix(void)
 
         for (uint8_t prefixLength = 1; prefixLength <= Ip6::Prefix::kMaxLength; prefixLength++)
         {
-            prefix.Set(prefixBytes, prefixLength);
+            prefix.InitFrom(prefixBytes, prefixLength);
 
             printf("Prefix %s\n", prefix.ToString().AsCString());
 
@@ -484,7 +484,7 @@ void TestIp6Prefix(void)
             {
                 Ip6::Prefix subPrefix;
 
-                subPrefix.Set(prefixBytes, subPrefixLength);
+                subPrefix.InitFrom(prefixBytes, subPrefixLength);
 
                 VerifyOrQuit(prefix.ContainsPrefix(subPrefix));
 
@@ -740,7 +740,7 @@ void TestIp6PrefixTidy(void)
             Ip6::Prefix prefix, answer;
 
             SuccessOrQuit(answer.FromString(test.prefixStringAfterTidy[i]));
-            prefix.Set(test.originalPrefix, i);
+            prefix.InitFrom(test.originalPrefix, i);
             prefix.Tidy();
 
             {
@@ -774,10 +774,10 @@ void TestIp4MappedIp6Address(void)
 
     printf("\nTestIp4MappedIp6Address()\n");
 
-    expectedIp4Address.SetBytes(kIp4Address);
+    expectedIp4Address.InitFrom(kIp4Address);
 
     SuccessOrQuit(expectedIp6Address.FromString("::ffff:192.0.2.33"));
-    ip6Address.SetToIp4Mapped(expectedIp4Address);
+    ip6Address.InitAsIp4Mapped(expectedIp4Address);
 
     printf("IPv4-mapped IPv6 address: %s\n", ip6Address.ToString().AsCString());
 
@@ -823,7 +823,7 @@ void TestIp4Ip6Translation(void)
 
     printf("\nTestIp4Ip6Translation()\n");
 
-    ip4Address.SetBytes(kIp4Address);
+    ip4Address.InitFrom(kIp4Address);
 
     for (const TestCase &testCase : kTestCases)
     {
@@ -832,7 +832,7 @@ void TestIp4Ip6Translation(void)
         Ip6::Address expectedAddress;
 
         SuccessOrQuit(address.FromString(testCase.mPrefix));
-        prefix.Set(address.GetBytes(), testCase.mLength);
+        prefix.InitFrom(address.GetBytes(), testCase.mLength);
 
         SuccessOrQuit(expectedAddress.FromString(testCase.mIp6Address));
 

tests/unit/test_link_metrics_manager.cpp

@@ -161,7 +161,7 @@ void UnitTester::TestLinkMetricsManager(void)
     }
 
     // subject1 received a response with a success status code
-    linkLocalAddr.SetToLinkLocalAddress(AsCoreType(&mTestChildList[0].mExtAddress));
+    linkLocalAddr.InitAsLinkLocalAddress(AsCoreType(&mTestChildList[0].mExtAddress));
     linkMetricsMgr->HandleMgmtResponse(&linkLocalAddr, MapEnum(LinkMetrics::Status::kStatusSuccess));
     VerifyOrQuit(subject1->mState == LinkMetricsManager::SubjectState::kActive);
 

tests/unit/test_mdns.cpp

@@ -2271,7 +2271,7 @@ void TestLocalHost(void)
 
     SuccessOrQuit(ip4Address.FromString("200.1.5.6"));
     SuccessOrQuit(localHost.mIp4Addrs.PushBack(ip4Address));
-    ip6Address.SetToIp4Mapped(ip4Address);
+    ip6Address.InitAsIp4Mapped(ip4Address);
     otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ true, kInfraIfIndex);
 
     AdvanceTime(4);
@@ -2436,17 +2436,17 @@ void TestLocalHost(void)
 
     SuccessOrQuit(ip4Address.FromString("200.1.5.7"));
     SuccessOrQuit(localHost.mIp4Addrs.PushBack(ip4Address));
-    ip6Address.SetToIp4Mapped(ip4Address);
+    ip6Address.InitAsIp4Mapped(ip4Address);
     otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ true, kInfraIfIndex);
 
     SuccessOrQuit(ip4Address.FromString("200.1.2.100"));
     SuccessOrQuit(localHost.mIp4Addrs.PushBack(ip4Address));
-    ip6Address.SetToIp4Mapped(ip4Address);
+    ip6Address.InitAsIp4Mapped(ip4Address);
     otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ true, kInfraIfIndex);
 
     SuccessOrQuit(ip4Address.FromString("200.1.4.0"));
     SuccessOrQuit(localHost.mIp4Addrs.PushBack(ip4Address));
-    ip6Address.SetToIp4Mapped(ip4Address);
+    ip6Address.InitAsIp4Mapped(ip4Address);
     otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ true, kInfraIfIndex);
 
     Log("Validate the announcements");
@@ -2481,7 +2481,7 @@ void TestLocalHost(void)
 
     for (Ip4::Address &ip4Addr : localHost.mIp4Addrs)
     {
-        ip6Address.SetToIp4Mapped(ip4Addr);
+        ip6Address.InitAsIp4Mapped(ip4Addr);
         otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ true, kInfraIfIndex);
     }
 
@@ -2510,7 +2510,7 @@ void TestLocalHost(void)
 
     for (Ip4::Address &ip4Addr : localHost.mIp4Addrs)
     {
-        ip6Address.SetToIp4Mapped(ip4Addr);
+        ip6Address.InitAsIp4Mapped(ip4Addr);
         otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ true, kInfraIfIndex);
     }
 
@@ -2562,7 +2562,7 @@ void TestLocalHost(void)
 
     for (Ip4::Address &ip4Addr : localHost.mIp4Addrs)
     {
-        ip6Address.SetToIp4Mapped(ip4Addr);
+        ip6Address.InitAsIp4Mapped(ip4Addr);
         otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ true, kInfraIfIndex);
     }
 
@@ -2589,7 +2589,7 @@ void TestLocalHost(void)
 
     for (const Ip4::Address &ip4Addr : localHost.mIp4Addrs)
     {
-        ip6Address.SetToIp4Mapped(ip4Addr);
+        ip6Address.InitAsIp4Mapped(ip4Addr);
         otPlatMdnsHandleHostAddressEvent(sInstance, &ip6Address, /* aAdded */ false, kInfraIfIndex);
     }
 

tests/unit/test_routing_manager.cpp

@@ -4997,7 +4997,7 @@ void TestDhcp6Pd(void)
 
     prefix = PrefixFromString("2001:db8:cafe:0::", 64);
 
-    shortPrefix.Set(prefix.GetBytes(), 48);
+    shortPrefix.InitFrom(prefix.GetBytes(), 48);
     ReportPdPrefixesAsRa({Pio(shortPrefix, kValidLitime, kPreferredLifetime)});
 
     sExpectedRios.Add(prefix);