From 1d51935d4349f153819e274631bd98fd82be1b3e Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Wed, 30 Nov 2022 17:10:43 +0100
Subject: [PATCH] Make Result able to return an error string

---
 luna/Result.h | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/luna/Result.h b/luna/Result.h
index 1aec130f..13dfd58a 100644
--- a/luna/Result.h
+++ b/luna/Result.h
@@ -2,6 +2,7 @@
 #include <Check.h>
 #include <Move.h>
 #include <PlacementNew.h>
+#include <SystemError.h>
 #include <Types.h>
 
 struct Error
@@ -92,6 +93,12 @@ template <typename T> class Result
         return {m_error};
     }
 
+    const char* error_string()
+    {
+        check(has_error());
+        return ::error_string(m_error);
+    }
+
     T value()
     {
         check(has_value());
@@ -224,6 +231,12 @@ template <> class Result<void>
         return {m_error};
     }
 
+    const char* error_string()
+    {
+        check(has_error());
+        return ::error_string(m_error);
+    }
+
     void value()
     {
         check(has_value());
@@ -242,7 +255,7 @@ template <> class Result<void>
 };
 
 // clang-format off
-#define err Error{0}
+#define err(x) Error{x}
 // clang-format on
 
 #define TRY(expr)                                                                                                      \