commit 014d85c8610ffc06a19181c2286761d28aab0696
author Kevin Schoedel <67607049+kpschoedel@users.noreply.github.com> Wed Oct 27 09:25:05 2021 -0400
committer GitHub <noreply@github.com> Wed Oct 27 09:25:05 2021 -0400
tree 7dc18b10ae5a51591b774d911efb3e912b9d24bb
parent 58508b22972b6e29922fb7c40a833966a6d33e46

Convert Inet::InterfaceId to a class (#10979)

* Convert Inet::InterfaceId to a class

#### Problem

The current `#if`+`typedef` requires the actual definition to be visible
at every appearance, rather than merely an opaque forward class declaration,
which is an obstace to #7715 _Virtualize System and Inet interfaces_.

#### Change overview

Convert `InterfaceId` to a class. Some free functions become class methods,
and `INET_NULL_INTERFACEID` is replaced by a default-constructed
`InterfaceId`.

#### Testing

CI; no changes to functionality intended.

* add InterfaceId::Null()

* replace strcpy()

src/inet/tests/TestInetLayerCommon.cpp

diff --git a/src/inet/tests/TestInetLayerCommon.cpp b/src/inet/tests/TestInetLayerCommon.cpp
index fdbbfec..609acf9 100644
--- a/src/inet/tests/TestInetLayerCommon.cpp
+++ b/src/inet/tests/TestInetLayerCommon.cpp
@@ -85,7 +85,7 @@
 
 const char * gInterfaceName = nullptr;
 
-InterfaceId gInterfaceId = INET_NULL_INTERFACEID;
+InterfaceId gInterfaceId = InterfaceId::Null();
 
 uint16_t gSendSize = 59;