From 206f95d3f695ae4d5fdd9bf042fa3c9300e4e220 Mon Sep 17 00:00:00 2001
From: Gris Ge <fge@redhat.com>
Date: Mon, 10 Jul 2023 15:46:55 +0800
Subject: [PATCH] Add pub function `ErrorMessage.is_ack()`

Simplify the effort on checking whether given error message is ack or
not.

Signed-off-by: Gris Ge <fge@redhat.com>
---
 src/error.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/error.rs b/src/error.rs
index f7951f7..515a21f 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -137,6 +137,11 @@ impl<'buffer, T: AsRef<[u8]> + 'buffer> Parseable<ErrorBuffer<&'buffer T>>
 }
 
 impl ErrorMessage {
+    /// Return true if specified error message is a acknowledgment with no error.
+    pub fn is_ack(&self) -> bool {
+        self.code.is_none()
+    }
+
     /// Returns the raw error code.
     pub fn raw_code(&self) -> i32 {
         self.code.map_or(0, NonZeroI32::get)