diff options
Diffstat (limited to 'absl/flags/flag.h')
| -rw-r--r-- | absl/flags/flag.h | 48 |
1 files changed, 19 insertions, 29 deletions
diff --git a/absl/flags/flag.h b/absl/flags/flag.h index f18e9f56a5cc..326fb8ee6894 100644 --- a/absl/flags/flag.h +++ b/absl/flags/flag.h @@ -94,14 +94,14 @@ class Flag { // Visual Studio 2015 still requires the constructor for class to be // constexpr initializable. #if _MSC_VER <= 1900 - constexpr Flag(const char* name, const flags_internal::HelpGenFunc help_gen, - const char* filename, + constexpr Flag(const char* name, const char* filename, const flags_internal::FlagMarshallingOpFn marshalling_op, + const flags_internal::HelpGenFunc help_gen, const flags_internal::FlagDfltGenFunc default_value_gen) : name_(name), - help_gen_(help_gen), filename_(filename), marshalling_op_(marshalling_op), + help_gen_(help_gen), default_value_gen_(default_value_gen), inited_(false), impl_(nullptr) {} @@ -116,10 +116,10 @@ class Flag { } impl_ = new flags_internal::Flag<T>( - name_, + name_, filename_, marshalling_op_, {flags_internal::FlagHelpSrc(help_gen_), flags_internal::FlagHelpSrcKind::kGenFunc}, - filename_, marshalling_op_, default_value_gen_); + default_value_gen_); inited_.store(true, std::memory_order_release); } @@ -155,9 +155,9 @@ class Flag { // The data members are logically private, but they need to be public for // this to be an aggregate type. const char* name_; - const flags_internal::HelpGenFunc help_gen_; const char* filename_; const flags_internal::FlagMarshallingOpFn marshalling_op_; + const flags_internal::HelpGenFunc help_gen_; const flags_internal::FlagDfltGenFunc default_value_gen_; mutable std::atomic<bool> inited_; @@ -342,26 +342,24 @@ ABSL_NAMESPACE_END ABSL_FLAG_IMPL_DECLARE_DEF_VAL_WRAPPER(name, Type, default_value) \ ABSL_FLAG_IMPL_DECLARE_HELP_WRAPPER(name, help); \ ABSL_CONST_INIT absl::Flag<Type> FLAGS_##name{ \ - ABSL_FLAG_IMPL_FLAGNAME(#name), \ - absl::flags_internal::HelpArg<AbslFlagHelpGenFor##name>(0), \ - ABSL_FLAG_IMPL_FILENAME(), \ + ABSL_FLAG_IMPL_FLAGNAME(#name), ABSL_FLAG_IMPL_FILENAME(), \ &absl::flags_internal::FlagMarshallingOps<Type>, \ + absl::flags_internal::HelpArg<AbslFlagHelpGenFor##name>(0), \ &AbslFlagsInitFlag##name}; \ extern bool FLAGS_no##name; \ bool FLAGS_no##name = ABSL_FLAG_IMPL_REGISTRAR(Type, FLAGS_##name) #else // MSVC version uses aggregate initialization. We also do not try to // optimize away help wrapper. -#define ABSL_FLAG_IMPL(Type, name, default_value, help) \ - namespace absl /* block flags in namespaces */ {} \ - ABSL_FLAG_IMPL_DECLARE_DEF_VAL_WRAPPER(name, Type, default_value) \ - ABSL_FLAG_IMPL_DECLARE_HELP_WRAPPER(name, help); \ - ABSL_CONST_INIT absl::Flag<Type> FLAGS_##name{ \ - ABSL_FLAG_IMPL_FLAGNAME(#name), &AbslFlagHelpGenFor##name::NonConst, \ - ABSL_FLAG_IMPL_FILENAME(), \ - &absl::flags_internal::FlagMarshallingOps<Type>, \ - &AbslFlagsInitFlag##name}; \ - extern bool FLAGS_no##name; \ +#define ABSL_FLAG_IMPL(Type, name, default_value, help) \ + namespace absl /* block flags in namespaces */ {} \ + ABSL_FLAG_IMPL_DECLARE_DEF_VAL_WRAPPER(name, Type, default_value) \ + ABSL_FLAG_IMPL_DECLARE_HELP_WRAPPER(name, help); \ + ABSL_CONST_INIT absl::Flag<Type> FLAGS_##name{ \ + ABSL_FLAG_IMPL_FLAGNAME(#name), ABSL_FLAG_IMPL_FILENAME(), \ + &absl::flags_internal::FlagMarshallingOps<Type>, \ + &AbslFlagHelpGenFor##name::NonConst, &AbslFlagsInitFlag##name}; \ + extern bool FLAGS_no##name; \ bool FLAGS_no##name = ABSL_FLAG_IMPL_REGISTRAR(Type, FLAGS_##name) #endif @@ -384,19 +382,11 @@ 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 absl::flags_internal::MakeFromDefaultValueOrEmpty<type>( \ - default_value); \ - }, \ + ABSL_ATTRIBUTE_UNUSED static const bool ignored_##flagname = \ + ([] { return type(default_value); }, \ absl::flags_internal::RetiredFlag<type>(#flagname)) #endif // ABSL_FLAGS_FLAG_H_ |