tree 0f39138cd6afc9d154e8211da7ecdcc6bece9166
parent d4260beae8c08c77390c9ca632523bb0466f24fd
author Wyatt Hepler <hepler@google.com> 1663287682 +0000
committer CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com> 1663287682 +0000

pw_protobuf: Distinguish between string and bytes fields

Use a MessageField bit to indicate that the field is a string field, as
opposed to a bytes field. Dedicating a bit to one specific type is an
inefficient use of the field_info_ bits, but there were bits to spare
and this was the simplest way to do this. If more field_info_ bits are
needed in the future, a few of the existing fields could be consolidated
into a single 4-bit field_type that specifies that precise type (e.g.
int32, fixed64, message, etc.).

It is necessary to distinguish between string and bytes in order to
switch from using pw::Vector<char> to pw::InlineString<> for string
fields.

This change also updates C++ codegen to include /*attr_name=*/ comments
for bool arguments to improve readability.

Change-Id: I31a918e8716f330eefddcf22b844d693d382b688
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/110231
Pigweed-Auto-Submit: Wyatt Hepler <hepler@google.com>
Reviewed-by: Armando Montanez <amontanez@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>