diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/mbgl/util/traits.hpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/mbgl/util/traits.hpp b/include/mbgl/util/traits.hpp index 9d6f947cd2..5b9401aad7 100644 --- a/include/mbgl/util/traits.hpp +++ b/include/mbgl/util/traits.hpp @@ -1,5 +1,6 @@ #pragma once +#include <cstdint> #include <type_traits> namespace mbgl { @@ -9,4 +10,19 @@ constexpr auto underlying_type(T t) -> typename std::underlying_type_t<T> { return typename std::underlying_type_t<T>(t); } +template <typename T> struct is_utf16char_like: std::false_type {}; +template <typename T> struct is_utf16char_like<const T>: is_utf16char_like<T> {}; +template <> struct is_utf16char_like<char16_t>: std::true_type {}; +template <> struct is_utf16char_like<wchar_t>: std::true_type {}; +template <> struct is_utf16char_like<uint16_t>: std::true_type {}; + +template <typename T> using is_utf16char_like_pointer = std::integral_constant<bool, std::is_pointer<T>::value + && is_utf16char_like<typename std::remove_pointer<T>::type>::value>; + +template <class OutPointer, class InChar> +typename std::enable_if<is_utf16char_like<InChar>::value && is_utf16char_like_pointer<OutPointer>::value, OutPointer>::type utf16char_cast(InChar *in) +{ + return reinterpret_cast<OutPointer>(in); +} + } // namespace mbgl |