diff options
author | 2020-05-08 10:36:00 -0700 | |
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committer | 2020-05-08 15:22:38 -0400 | |
commit | c45d1c09d517e145d722e00deea9be6c8be8dd57 (patch) | |
tree | 6db7d9f18aeb714064b25fd11ade71f3d2fbe3ae /absl/flags/internal/flag.h | |
parent | a35ef8a62ce7cded2f131ccbd2b5c4a81d622507 (diff) |
Export of internal Abseil changes
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47f13ea42ae272c995b1cd5073a45e046fa325eb by Matthew Brown <matthewbr@google.com>:
absl::StrFormat: Centralize FormatConversionCharSet vs FormatConversionSpec checking
- Move it into a central location, rather than requiring individual overloads to
validate.
PiperOrigin-RevId: 310583805
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a567c8fc8032031d551d6b457755851f442e65ad by Gennadiy Rozental <rogeeff@google.com>:
Internal change
PiperOrigin-RevId: 310427635
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49848f7fab9b0f528d33f60cbccf688e2ea68afa by Gennadiy Rozental <rogeeff@google.com>:
Make Get/Set private methods of absl::Flag<T>.
PiperOrigin-RevId: 310413908
GitOrigin-RevId: 47f13ea42ae272c995b1cd5073a45e046fa325eb
Change-Id: I6530c754731c1a9463877561fa61786460ed60af
Diffstat (limited to 'absl/flags/internal/flag.h')
-rw-r--r-- | absl/flags/internal/flag.h | 64 |
1 files changed, 50 insertions, 14 deletions
diff --git a/absl/flags/internal/flag.h b/absl/flags/internal/flag.h index f53f484f..b060199e 100644 --- a/absl/flags/internal/flag.h +++ b/absl/flags/internal/flag.h @@ -40,6 +40,30 @@ namespace absl { ABSL_NAMESPACE_BEGIN + +// Forward declaration of absl::Flag<T> public API. +namespace flags_internal { +template <typename T> +class Flag; +} // namespace flags_internal + +#if defined(_MSC_VER) && !defined(__clang__) +template <typename T> +class Flag; +#else +template <typename T> +using Flag = flags_internal::Flag<T>; +#endif + +template <typename T> +ABSL_MUST_USE_RESULT T GetFlag(const absl::Flag<T>& flag); + +template <typename T> +void SetFlag(absl::Flag<T>* flag, const T& v); + +template <typename T, typename V> +void SetFlag(absl::Flag<T>* flag, const V& v); + namespace flags_internal { /////////////////////////////////////////////////////////////////////////////// @@ -596,6 +620,32 @@ class Flag { flags_internal::StorageKind<T>(), default_arg), value_() {} + // CommandLineFlag interface + absl::string_view Name() const { return impl_.Name(); } + std::string Filename() const { return impl_.Filename(); } + std::string Help() const { return impl_.Help(); } + bool IsSpecifiedOnCommandLine() const { + return impl_.IsSpecifiedOnCommandLine(); + } + std::string DefaultValue() const { return impl_.DefaultValue(); } + std::string CurrentValue() const { return impl_.CurrentValue(); } + + private: + template <typename U, bool do_register> + friend class FlagRegistrar; + +#if !defined(_MSC_VER) || defined(__clang__) + template <typename U> + friend U absl::GetFlag(const flags_internal::Flag<U>& flag); + template <typename U> + friend void absl::SetFlag(flags_internal::Flag<U>* flag, const U& v); + template <typename U, typename V> + friend void absl::SetFlag(flags_internal::Flag<U>* flag, const V& v); +#else + template <typename U> + friend class absl::Flag; +#endif + T Get() const { // See implementation notes in CommandLineFlag::Get(). union U { @@ -617,20 +667,6 @@ class Flag { impl_.Write(&v); } - // CommandLineFlag interface - absl::string_view Name() const { return impl_.Name(); } - std::string Filename() const { return impl_.Filename(); } - std::string Help() const { return impl_.Help(); } - bool IsSpecifiedOnCommandLine() const { - return impl_.IsSpecifiedOnCommandLine(); - } - std::string DefaultValue() const { return impl_.DefaultValue(); } - std::string CurrentValue() const { return impl_.CurrentValue(); } - - private: - template <typename U, bool do_register> - friend class FlagRegistrar; - // Flag's data // The implementation depends on value_ field to be placed exactly after the // impl_ field, so that impl_ can figure out the offset to the value and |