From: Kefu Chai <kchai@redhat.com>
Date: Fri, 31 Jan 2020 05:02:28 +0000 (+0800)
Subject: include/buffer: add operator+=() for iterators
X-Git-Tag: v15.1.1~550^2~1
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=5ab82abbbbcaa762286ed0ab8e07e58c7613d4a0;p=ceph.git

include/buffer: add operator+=() for iterators

less type than p.advance(). please note, this does not imply that
list::iterator is a RandomAccessIterator. as the parameter type of
p.adavance() is not `ptrdiff_t`, which is a signed type.

Signed-off-by: Kefu Chai <kchai@redhat.com>
---

diff --git a/src/include/buffer.h b/src/include/buffer.h
index c77da774e7e03..6bcbecc3a820a 100644
--- a/src/include/buffer.h
+++ b/src/include/buffer.h
@@ -232,6 +232,10 @@ inline namespace v14_2_0 {
 	if (pos > end_ptr)
 	  throw end_of_buffer();
       }
+      iterator_impl& operator+=(size_t len) {
+        advance(len);
+        return *this;
+      }
 
       const char *get_pos() {
 	return pos;
@@ -717,10 +721,13 @@ inline namespace v14_2_0 {
 	return p == ls->end();
 	//return off == bl->length();
       }
-
       void advance(unsigned o);
       void seek(unsigned o);
       char operator*() const;
+      iterator_impl& operator+=(unsigned o) {
+        advance(o);
+        return *this;
+      }
       iterator_impl& operator++();
       ptr get_current_ptr() const;
       bool is_pointing_same_raw(const ptr& other) const;