From 4db8a3c200345d67ef178308a11d253a112d6304 Mon Sep 17 00:00:00 2001
From: Ben Bridle <ben@derelict.engineering>
Date: Mon, 3 Feb 2025 09:34:56 +1300
Subject: Implement a fatal log level

The error log level now reports recoverable errors, with the fatal log
level being reserved for unrecoverable errors where the program should
immediately terminate.
---
 src/log_level.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'src/log_level.rs')

diff --git a/src/log_level.rs b/src/log_level.rs
index 6c84cb0..9293efc 100644
--- a/src/log_level.rs
+++ b/src/log_level.rs
@@ -7,8 +7,10 @@ pub enum LogLevel {
     Info,
     /// Report recoverable issues.
     Warn,
-    /// Report unrecoverable errors and quit.
+    /// Report recoverable process errors.
     Error,
+    /// Report unrecoverable application errors and quit.
+    Fatal,
 }
 
 impl PartialOrd for LogLevel {
@@ -24,14 +26,22 @@ impl Ord for LogLevel {
             (Info , Info ) => Ordering::Equal,
             (Info , Warn ) => Ordering::Less,
             (Info , Error) => Ordering::Less,
+            (Info , Fatal) => Ordering::Less,
 
             (Warn , Info ) => Ordering::Greater,
             (Warn , Warn ) => Ordering::Equal,
             (Warn , Error) => Ordering::Less,
+            (Warn , Fatal) => Ordering::Less,
 
             (Error , Info ) => Ordering::Greater,
             (Error , Warn ) => Ordering::Greater,
             (Error , Error) => Ordering::Equal,
+            (Error , Fatal) => Ordering::Less,
+
+            (Fatal , Info ) => Ordering::Greater,
+            (Fatal , Warn ) => Ordering::Greater,
+            (Fatal , Error) => Ordering::Greater,
+            (Fatal , Fatal) => Ordering::Equal,
         }
     }
 }
-- 
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