commit 3909c65a11f7209b85c7b621fd87dd7ba62a6854
author Christopher Kohlhoff <chris@kohlhoff.com> Sat Aug 27 16:36:05 2016 +1000
committer Christopher Kohlhoff <chris@kohlhoff.com> Sun Aug 28 10:02:41 2016 +1000
tree 8bdd893152e7556274690a12736d711763d70292
parent c65f3bd163744c230ed44aa342bb0529d808dd93

Add operator+= to const_buffer and mutable_buffer.

asio/include/asio/buffer.hpp

diff --git a/asio/include/asio/buffer.hpp b/asio/include/asio/buffer.hpp
index 5d028fb..e238c72 100644
--- a/asio/include/asio/buffer.hpp
+++ b/asio/include/asio/buffer.hpp
@@ -134,6 +134,15 @@
     return size_;
   }
 
+  /// Move the start of the buffer by the specified number of bytes.
+  mutable_buffer& operator+=(std::size_t n) ASIO_NOEXCEPT
+  {
+    std::size_t offset = n < size_ ? n : size_;
+    data_ = static_cast<char*>(data_) + offset;
+    size_ -= offset;
+    return *this;
+  }
+
 private:
   void* data_;
   std::size_t size_;
@@ -269,6 +278,15 @@
     return size_;
   }
 
+  /// Move the start of the buffer by the specified number of bytes.
+  const_buffer& operator+=(std::size_t n) ASIO_NOEXCEPT
+  {
+    std::size_t offset = n < size_ ? n : size_;
+    data_ = static_cast<const char*>(data_) + offset;
+    size_ -= offset;
+    return *this;
+  }
+
 private:
   const void* data_;
   std::size_t size_;

asio/src/tests/unit/buffer.cpp

diff --git a/asio/src/tests/unit/buffer.cpp b/asio/src/tests/unit/buffer.cpp
index fa6ba79..af749de 100644
--- a/asio/src/tests/unit/buffer.cpp
+++ b/asio/src/tests/unit/buffer.cpp
@@ -78,6 +78,7 @@
 
     // mutable_buffer operators.
 
+    mb1 += 128;
     mb1 = mb2 + 128;
     mb1 = 128 + mb2;
 
@@ -114,6 +115,7 @@
 
     // const_buffer operators.
 
+    cb1 += 128;
     cb1 = cb2 + 128;
     cb1 = 128 + cb2;