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Lua/LuaInstance: Fix LuaImplQueryArg for flags enums

This commit is contained in:
Lynix 2016-11-27 14:07:18 +01:00
parent 936a2df676
commit 649001b696
1 changed files with 14 additions and 4 deletions
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18
include/Nazara/Lua/LuaInstance.inl
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@ -116,15 +116,25 @@ namespace Nz
template<typename T> template<typename T>
std::enable_if_t<std::is_enum<T>::value && EnableFlagsOperators<T>::value, unsigned int> LuaImplQueryArg(const LuaInstance& instance, int index, T* arg, TypeTag<T>) std::enable_if_t<std::is_enum<T>::value && EnableFlagsOperators<T>::value, unsigned int> LuaImplQueryArg(const LuaInstance& instance, int index, T* arg, TypeTag<T>)
{ {
Flags<T> flags; using UnderlyingT = std::underlying_type_t<T>;
return LuaImplQueryArg(instance, index, &flags, TypeTag<decltype(flags)>());
UnderlyingT pot2Val;
unsigned int ret = LuaImplQueryArg(instance, index, &pot2Val, TypeTag<UnderlyingT>());
*arg = static_cast<T>(IntegralLog2Pot(pot2Val));
return 1;
} }
template<typename T> template<typename T>
std::enable_if_t<std::is_enum<T>::value && EnableFlagsOperators<T>::value, unsigned int> LuaImplQueryArg(const LuaInstance& instance, int index, T* arg, T defValue, TypeTag<T>) std::enable_if_t<std::is_enum<T>::value && EnableFlagsOperators<T>::value, unsigned int> LuaImplQueryArg(const LuaInstance& instance, int index, T* arg, T defValue, TypeTag<T>)
{ {
Flags<T> flags; using UnderlyingT = std::underlying_type_t<T>;
return LuaImplQueryArg(instance, index, &flags, Flags<T>(defValue), TypeTag<decltype(flags)>());
UnderlyingT pot2Val;
unsigned int ret = LuaImplQueryArg(instance, index, &pot2Val, 1U << static_cast<UnderlyingT>(defValue), TypeTag<UnderlyingT>());
*arg = static_cast<T>(IntegralLog2Pot(pot2Val));
return 1;
} }
template<typename E> template<typename E>