Title: [201258] trunk/Source/WTF
- Revision
- 201258
- Author
- m...@apple.com
- Date
- 2016-05-22 15:19:33 -0700 (Sun, 22 May 2016)
Log Message
Additional fixes for non-C++14 Apple projects that use WTF.
* wtf/StdLibExtras.h:
(std::make_unique):
(std::move):
Modified Paths
Diff
Modified: trunk/Source/WTF/ChangeLog (201257 => 201258)
--- trunk/Source/WTF/ChangeLog 2016-05-22 22:04:10 UTC (rev 201257)
+++ trunk/Source/WTF/ChangeLog 2016-05-22 22:19:33 UTC (rev 201258)
@@ -1,5 +1,13 @@
2016-05-22 Dan Bernstein <m...@apple.com>
+ Additional fixes for non-C++14 Apple projects that use WTF.
+
+ * wtf/StdLibExtras.h:
+ (std::make_unique):
+ (std::move):
+
+2016-05-22 Dan Bernstein <m...@apple.com>
+
Correct the previous build fix attempt.
* wtf/StdLibExtras.h:
Modified: trunk/Source/WTF/wtf/StdLibExtras.h (201257 => 201258)
--- trunk/Source/WTF/wtf/StdLibExtras.h 2016-05-22 22:04:10 UTC (rev 201257)
+++ trunk/Source/WTF/wtf/StdLibExtras.h 2016-05-22 22:19:33 UTC (rev 201258)
@@ -320,7 +320,36 @@
// This adds various C++14 features for versions of the STL that may not yet have them.
namespace std {
+#if __cplusplus < 201400L
+template<class T> struct _Unique_if {
+ typedef unique_ptr<T> _Single_object;
+};
+template<class T> struct _Unique_if<T[]> {
+ typedef unique_ptr<T[]> _Unknown_bound;
+};
+
+template<class T, size_t N> struct _Unique_if<T[N]> {
+ typedef void _Known_bound;
+};
+
+template<class T, class... Args> inline typename _Unique_if<T>::_Single_object
+make_unique(Args&&... args)
+{
+ return unique_ptr<T>(new T(std::forward<Args>(args)...));
+}
+
+template<class T> inline typename _Unique_if<T>::_Unknown_bound
+make_unique(size_t n)
+{
+ typedef typename remove_extent<T>::type U;
+ return unique_ptr<T>(new U[n]());
+}
+
+template<class T, class... Args> typename _Unique_if<T>::_Known_bound
+make_unique(Args&&...) = delete;
+#endif
+
template<WTF::CheckMoveParameterTag, typename T>
ALWAYS_INLINE constexpr typename remove_reference<T>::type&& move(T&& value)
{
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