fix: use different syntax for opening namespace for custom formatters

VowpalWabbit · Feb 1, 2022 · 57e8ff2 · 57e8ff2
1 parent d5b709d
commit 57e8ff2
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Showing 3 changed files with 15 additions and 6 deletions.
diff --git a/vowpalwabbit/automl.h b/vowpalwabbit/automl.h
@@ -188,8 +188,10 @@ size_t write_model_field(io_buf&, const VW::automl::interaction_config_manager&,
 }  // namespace model_utils
 }  // namespace VW
 
+namespace fmt
+{
 template <>
-struct fmt::formatter<VW::automl::automl_state> : formatter<std::string>
+struct formatter<VW::automl::automl_state> : formatter<std::string>
 {
   auto format(VW::automl::automl_state c, format_context& ctx) -> decltype(ctx.out())
   {
@@ -198,10 +200,11 @@ struct fmt::formatter<VW::automl::automl_state> : formatter<std::string>
 };
 
 template <>
-struct fmt::formatter<VW::automl::config_state> : formatter<std::string>
+struct formatter<VW::automl::config_state> : formatter<std::string>
 {
   auto format(VW::automl::config_state c, format_context& ctx) -> decltype(ctx.out())
   {
     return formatter<std::string>::format(std::string{VW::to_string(c)}, ctx);
   }
-};
+};
+}  // namespace fmt
diff --git a/vowpalwabbit/ccb_label.h b/vowpalwabbit/ccb_label.h
@@ -125,11 +125,14 @@ size_t write_model_field(io_buf&, const CCB::label&, const std::string&, bool);
 }  // namespace model_utils
 }  // namespace VW
 
+namespace fmt
+{
 template <>
-struct fmt::formatter<CCB::example_type> : formatter<std::string>
+struct formatter<CCB::example_type> : formatter<std::string>
 {
   auto format(CCB::example_type c, format_context& ctx) -> decltype(ctx.out())
   {
     return formatter<std::string>::format(std::string{VW::to_string(c)}, ctx);
   }
 };
+}  // namespace fmt
diff --git a/vowpalwabbit/slates_label.h b/vowpalwabbit/slates_label.h
@@ -72,11 +72,14 @@ size_t write_model_field(io_buf&, const VW::slates::label&, const std::string&,
 }  // namespace model_utils
 }  // namespace VW
 
+namespace fmt
+{
 template <>
-struct fmt::formatter<VW::slates::example_type> : formatter<std::string>
+struct formatter<VW::slates::example_type> : formatter<std::string>
 {
   auto format(VW::slates::example_type c, format_context& ctx) -> decltype(ctx.out())
   {
     return formatter<std::string>::format(std::string{VW::to_string(c)}, ctx);
   }
-};
+};
+}  // namespace fmt