diff options
| author |  Abseil Team <absl-team@google.com> | 2019-12-19 12:03:35 -0800 |
|---|---|---|
| committer |  CJ Johnson <johnsoncj@google.com> | 2019-12-19 15:40:56 -0500 |
| commit | ad904b6cd3906ddf79878003d92b7bc08d7786ae (patch) | |
| tree | f30a1740ab8e8b7c3ea37e6d0cb94bfd820b72e7 /absl/flags/flag.h | |
| parent | 7bd1935dcbaf08701798d17fe408c960adec2da4 (diff) | |
Export of internal Abseil changes
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24162e64040e89f174531fa78fc0ff43c3a67da4 by Abseil Team <absl-team@google.com>:
Make ABSL_RETIRED_FLAG behave consistently with ABSL_FLAG.
Before the change:
ABSL_RETIRED_FLAG does not compile when there are competing ctors in the type, even when ABSL_FLAG does.
After the change:
ABSL_RETIRED_FLAG compiles when ABSL_FLAG does.
PiperOrigin-RevId: 286437395
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870d4cb4d114813e9cefe30d26d020b0fdcdc4b4 by Tom Manshreck <shreck@google.com>:
Add docs on bind_front
PiperOrigin-RevId: 286433540
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b0c328bd9bb64e0382f942f93b85054229dafeac by Tom Manshreck <shreck@google.com>:
Specify the format for LogSeverity flags
PiperOrigin-RevId: 286402811
GitOrigin-RevId: 24162e64040e89f174531fa78fc0ff43c3a67da4
Change-Id: I89785145d049fee49c6b9cf3357893ece9a6231c
Diffstat (limited to 'absl/flags/flag.h')
| -rw-r--r-- | absl/flags/flag.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/absl/flags/flag.h b/absl/flags/flag.h index b6fbd11..f18e9f5 100644 --- a/absl/flags/flag.h +++ b/absl/flags/flag.h @@ -384,11 +384,19 @@ ABSL_NAMESPACE_END // // `default_value` is only used as a double check on the type. `explanation` is // unused. +// +// ABSL_RETIRED_FLAG support omitting the default value for default +// constructible value type, so that users can delete the code generatring this +// value. +// // TODO(rogeeff): Return an anonymous struct instead of bool, and place it into // the unnamed namespace. #define ABSL_RETIRED_FLAG(type, flagname, default_value, explanation) \ - ABSL_ATTRIBUTE_UNUSED static const bool ignored_##flagname = \ - ([] { return type(default_value); }, \ + ABSL_ATTRIBUTE_UNUSED static const bool ignored_##flagname = \ + ([] { \ + return absl::flags_internal::MakeFromDefaultValueOrEmpty<type>( \ + default_value); \ + }, \ absl::flags_internal::RetiredFlag<type>(#flagname)) #endif // ABSL_FLAGS_FLAG_H_ |