AK: Implement Formatter for ErrorOr<>

As the Formatter for Error already exists, this apparently was just accidentally omitted.
Author: https://github.com/BenWiederhake Commit: https://github.com/SerenityOS/serenity/commit/dbd60f9ff40 Pull-request: https://github.com/SerenityOS/serenity/pull/11113 Reviewed-by: https://github.com/BertalanD Reviewed-by: https://github.com/IdanHo Reviewed-by: https://github.com/creator1creeper1
2021-11-26 22:33:04 +01:00 · 2021-11-26 22:33:04 +01:00 · dbd60f9ff4 · 2024-07-17 23:08:03 +09:00
commit dbd60f9ff4
parent cf315635a8
1 changed files with 10 additions and 0 deletions
--- a/AK/Format.h
+++ b/AK/Format.h
@ -624,6 +624,16 @@ struct Formatter<Error> : Formatter<FormatString> {
    }
 };

+template<typename T, typename ErrorType>
+struct Formatter<ErrorOr<T, ErrorType>> : Formatter<FormatString> {
+    ErrorOr<void> format(FormatBuilder& builder, ErrorOr<T, ErrorType> const& error_or)
+    {
+        if (error_or.is_error())
+            return Formatter<FormatString>::format(builder, "{}", error_or.error());
+        return Formatter<FormatString>::format(builder, "{{{}}}", error_or.value());
+    }
+};
+
 } // namespace AK

 #ifdef KERNEL