From b22493ce7eba38f0bf5bdbaf5ab1b245d072683c Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Thu, 24 Apr 2014 07:30:39 -0700
Subject: [PATCH] Add a move ctor to Array.

---
 format.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/format.h b/format.h
index 8e428567..8c3d8da5 100644
--- a/format.h
+++ b/format.h
@@ -73,6 +73,12 @@
        (FMT_GCC_VERSION >= 404 && __cplusplus >= 201103) || _MSC_VER >= 1800)
 #endif
 
+#ifndef FMT_USE_RVALUE_REFERENCES
+# define FMT_USE_RVALUE_REFERENCES \
+   (FMT_HAS_FEATURE(cxx_rvalue_references) || \
+       (FMT_GCC_VERSION >= 403 && __cplusplus >= 201103) || _MSC_VER >= 1600)
+#endif
+
 // Define FMT_USE_NOEXCEPT to make format use noexcept (C++11 feature).
 #if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \
   (FMT_GCC_VERSION >= 408 && __cplusplus >= 201103)
@@ -137,6 +143,20 @@ class Array {
     if (ptr_ != data_) delete [] ptr_;
   }
 
+#if FMT_USE_RVALUE_REFERENCES
+  Array(Array &&other)
+  : size_(other.size_),
+    capacity_(other.capacity_) {
+    if (other.ptr_ == other.data_) {
+      ptr_ = data_;
+      std::copy(other.data_, other.data_ + size_, CheckPtr(data_, capacity_));
+    } else {
+      ptr_ = other.ptr_;
+      other.ptr_ = 0;
+    }
+  }
+#endif
+
   // Returns the size of this array.
   std::size_t size() const { return size_; }