diff options
Diffstat (limited to 'support/ToolchainSupport.h')
| -rw-r--r-- | support/ToolchainSupport.h | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/support/ToolchainSupport.h b/support/ToolchainSupport.h index 56cbce8cc4..cb156f39c7 100644 --- a/support/ToolchainSupport.h +++ b/support/ToolchainSupport.h @@ -339,24 +339,37 @@ inline bool isfinite(half_float::half value) namespace cpp14 { /** make_unique is missing in CPP11. Re-implement it according to the standard proposal. */ + +/**<Template for single object */ template <class T> struct _Unique_if { - typedef std::unique_ptr<T> _Single_object; + typedef std::unique_ptr<T> _Single_object; /**< Single object type */ }; +/** Template for array */ template <class T> struct _Unique_if<T[]> { - typedef std::unique_ptr<T[]> _Unknown_bound; + typedef std::unique_ptr<T[]> _Unknown_bound; /**< Array type */ }; +/** Template for array with known bounds (to throw an error). + * + * @note this is intended to never be hit. + */ template <class T, size_t N> struct _Unique_if<T[N]> { - typedef void _Known_bound; + typedef void _Known_bound; /**< Should never be used */ }; +/** Construct a single object and return a unique pointer to it. + * + * @param[in] args Constructor arguments. + * + * @return a unique pointer to the new object. + */ template <class T, class... Args> typename _Unique_if<T>::_Single_object make_unique(Args &&... args) @@ -364,6 +377,12 @@ make_unique(Args &&... args) return std::unique_ptr<T>(new T(std::forward<Args>(args)...)); } +/** Construct an array of objects and return a unique pointer to it. + * + * @param[in] n Array size + * + * @return a unique pointer to the new array. + */ template <class T> typename _Unique_if<T>::_Unknown_bound make_unique(size_t n) @@ -372,6 +391,7 @@ make_unique(size_t n) return std::unique_ptr<T>(new U[n]()); } +/** It is invalid to attempt to make_unique an array with known bounds. */ template <class T, class... Args> typename _Unique_if<T>::_Known_bound make_unique(Args &&...) = delete; |