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Make changes on the make_unsigned type trait (#5136) 

Fix a typo in the static assert message in `make_unsigned`

Support more specifications for `make_unsigned`
This commit is contained in:
Henry Lee 2019-01-29 12:31:58 +11:00 committed by Wouter van Oortmerssen
parent 7d3930a2fd
commit d8210d5a83
1 changed files with 6 additions and 2 deletions
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8
include/flatbuffers/stl_emulation.h
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@ -148,11 +148,15 @@ inline void vector_emplace_back(std::vector<T> *vector, V &&data) {
template <typename T> using is_unsigned = std::tr1::is_unsigned<T>;
// Android NDK doesn't have std::make_unsigned or std::tr1::make_unsigned.
template<typename T> struct make_unsigned {
static_assert(is_unsigned<T>::value, "Specialization not impelented!");
static_assert(is_unsigned<T>::value, "Specialization not implemented!");
using type = T;
};
template<> struct make_unsigned<char> { using type = unsigned char; };
template<> struct make_unsigned<int> { using type = unsigned int; };
template<> struct make_unsigned<short> { using type = unsigned short; };
template<> struct make_unsigned<int> { using type = unsigned int; };
template<> struct make_unsigned<long> { using type = unsigned long; };
template<>
struct make_unsigned<long long> { using type = unsigned long long; };
#endif // !FLATBUFFERS_CPP98_STL
#else
// MSVC 2010 doesn't support C++11 aliases.