Artem Titov 3f87250a4f Revert "Remove RTC_DISALLOW_COPY_AND_ASSIGN usages completely"
This reverts commit 5f0eb93d2a44cec2102fc8c3757d5bb814bd145f.

Reason for revert: Breaks downstream project. I'm going to fix that one and create a reland of this CL after.

Original change's description:
> Remove RTC_DISALLOW_COPY_AND_ASSIGN usages completely
>
> Bug: webrtc:13555, webrtc:13082
> Change-Id: Iff2cda6f516739419e97e975e03f77a98f74be03
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249260
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Reviewed-by: Artem Titov <titovartem@webrtc.org>
> Commit-Queue: (Daniel.L) Byoungchan Lee <daniel.l@hpcnt.com>
> Cr-Commit-Position: refs/heads/main@{#35805}

TBR=hta@webrtc.org,titovartem@webrtc.org,daniel.l@hpcnt.com,webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I33d497f1132adfe6d151023195a388d9b7d548f9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:13555, webrtc:13082
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/249364
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Owners-Override: Artem Titov <titovartem@webrtc.org>
Reviewed-by: Andrey Logvin <landrey@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35807}
2022-01-26 14:56:14 +00:00
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How to write code in the api/ directory

Mostly, just follow the regular style guide, but:

  • Note that api/ code is not exempt from the “.h and .cc files come in pairs” rule, so if you declare something in api/path/to/foo.h, it should be defined in api/path/to/foo.cc.
  • Headers in api/ should, if possible, not #include headers outside api/. Its not always possible to avoid this, but be aware that it adds to a small mountain of technical debt that were trying to shrink.
  • .cc files in api/, on the other hand, are free to #include headers outside api/.

That is, the preferred way for api/ code to access non-api/ code is to call it from a .cc file, so that users of our API headers wont transitively #include non-public headers.

For headers in api/ that need to refer to non-public types, forward declarations are often a lesser evil than including non-public header files. The usual rules still apply, though.

.cc files in api/ should preferably be kept reasonably small. If a substantial implementation is needed, consider putting it with our non-public code, and just call it from the api/ .cc file.