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-rw-r--r--include/mbgl/util/traits.hpp16
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