Artem Titov 533a9fec55 Clean BUILD.gn files: remove extra :memory
Use //third_party/abseil-cpp/absl/memory instead of
//third_party/abseil-cpp/absl/memory:memory in BUILD.gn files.

Bug: None
Change-Id: I47c915f0847b102b37c5b38009c91b315cd3a1b8
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/128615
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27222}
2019-03-21 12:09:50 +00:00
..
2019-03-14 12:06:40 +00:00
2019-03-08 00:35:05 +00:00
2019-03-18 17:28:02 +00:00
2019-01-25 20:29:58 +00:00
2019-02-01 13:24:47 +00:00

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.