roll: third_party/pigweed pw_channel: Rework inheritance to avoid SiblingCast
Change pw_channel to a new inheritance pattern that places AnyChannel in
the middle of the hierarchy. The various Channel API classes are private
empty bases of AnyChannel. This ensures conversions between compatible
Channel variants are valid, since all channel implementations have all
channel variants as bases. Channel implementations extend a ChannelImpl
with properties specified in template parameters, and unsupported
functions are automatically disabled.
This change also refactors and simplifies the channel.h header.
Properties and code for checking them are moved to a properties.h
header. Also, the macros to generate ChannelImpl specializations are
greatly simplified.
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/247732
Original-Revision: 0422de1761e52ad5d1fad821880025fc27facf1c
Rolled-Repo: https://pigweed.googlesource.com/pigweed/pigweed
Rolled-Commits: c521eeca9d3860..0422de1761e52a
Roll-Count: 1
Roller-URL: https://cr-buildbucket.appspot.com/build/8731489287627470897
GitWatcher: ignore
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I9a5ac1d4db76eb434ae07a9445fd419f35635571
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/248099
Bot-Commit: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Pigweed Roller <pigweed-roller@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index c521eec..0422de1 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit c521eeca9d38601a8d13ae542a1e59e363d7fbc8
+Subproject commit 0422de1761e52ad5d1fad821880025fc27facf1c
