WIP: base::Bind for rvalue references.

base/template_util.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_TEMPLATE_UTIL_H_
 #define BASE_TEMPLATE_UTIL_H_
 
 #include <cstddef>  // For size_t.
+#include <type_traits>
 
 #include "build/build_config.h"
 
 namespace base {
 
 // template definitions from tr1
 
 template<class T, T v>
 struct integral_constant {
   static const T value = v;
@@ skipping 30 matching lines @@
 template <class T> struct is_non_const_reference : false_type {};
 template <class T> struct is_non_const_reference<T&> : true_type {};
 template <class T> struct is_non_const_reference<const T&> : false_type {};
 
 template <class T> struct is_const : false_type {};
 template <class T> struct is_const<const T> : true_type {};
 
 template <class T> struct is_void : false_type {};
 template <> struct is_void<void> : true_type {};
 
+template <typename T>
+struct is_move_constructible : public std::is_constructible<T, T&&> {};
+
+template <typename T>
+struct is_copy_constructible : public std::is_constructible<T, const T&> {};
+
+template <typename T>
+struct is_move_only
+    : public std::conditional<!is_copy_constructible<T>::value,
+                              typename is_move_constructible<T>::type,
+                              std::false_type>::type {};
+
 namespace internal {
 
 // Types YesType and NoType are guaranteed such that sizeof(YesType) <
 // sizeof(NoType).
 typedef char YesType;
 
 struct NoType {
   YesType dummy[2];
 };
 
@@ skipping 50 matching lines @@
 
 template<bool B, class T = void>
 struct enable_if {};
 
 template<class T>
 struct enable_if<true, T> { typedef T type; };
 
 }  // namespace base
 
 #endif  // BASE_TEMPLATE_UTIL_H_