From: Adam Kupczyk <akupczyk@redhat.com>
Date: Wed, 29 Jun 2022 08:28:37 +0000 (+0200)
Subject: common/interval_set: Add operator-- to iterator
X-Git-Tag: v16.2.11~414^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=122fa7eafec286d5126cc2955fd1436471dd23a3;p=ceph.git

common/interval_set: Add operator-- to iterator

Only ++ was allowed. Extend iterator manipulation to -- too.

Signed-off-by: Adam Kupczyk <akupczyk@redhat.com>
(cherry picked from commit 58860ce3f60489d258aaa10fd783e68083261937)
---

diff --git a/src/include/interval_set.h b/src/include/interval_set.h
index f1a21e5f96e1..dfb2a306ca21 100644
--- a/src/include/interval_set.h
+++ b/src/include/interval_set.h
@@ -106,6 +106,21 @@ class interval_set {
           return prev;
         }
 
+        // Predecrement
+        iterator& operator--()
+        {
+          --_iter;
+          return *this;
+        }
+
+        // Postdecrement
+        iterator operator--(int)
+        {
+          iterator prev(_iter);
+          --_iter;
+          return prev;
+        }
+
     friend class interval_set::const_iterator;
 
     protected:
@@ -174,6 +189,21 @@ class interval_set {
           return prev;
         }
 
+        // Predecrement
+        iterator& operator--()
+        {
+          --_iter;
+          return *this;
+        }
+
+        // Postdecrement
+        iterator operator--(int)
+        {
+          iterator prev(_iter);
+          --_iter;
+          return prev;
+        }
+
     protected:
         typename Map::const_iterator _iter;
   };