[enum_parser] generate ToStringBuf specialization

IGNIETFERRO-1350

ref:bb9bb1755b6abfc5a27639daf049b8a7cd748fe4

1 files changed, 8 insertions, 0 deletions

diff --git a/util/generic/serialized_enum.h b/util/generic/serialized_enum.h
index 79df2bac22..8188c43eed 100644
--- a/util/generic/serialized_enum.h
+++ b/util/generic/serialized_enum.h
@@ -81,6 +81,14 @@ namespace NEnumSerializationRuntime {
      */
     template <typename EnumT>
     const TVector<TString>& GetEnumAllCppNamesImpl();
+
+    /**
+     * Converts @c e to a string. Works like @c ToString(e) function, but returns @c TStringBuf instead of @c TString.
+     * Thus works slightly faster and usually avoids any dynamic memory allocation.
+     * @throw yexception is case of unknown enum value
+     */
+    template <typename EnumT>
+    TStringBuf ToStringBuf(EnumT e);
 }
 
 /**