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Core/Algorithm: Replace UnpackTuple by Apply 

Former-commit-id: dccf9a102e4287035184053e1d60abc0edaf1a1d
This commit is contained in:
Lynix 2015-08-20 13:35:51 +02:00
parent 4d5cea8afe
commit 481a191693
3 changed files with 13 additions and 26 deletions
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2
include/Nazara/Core/Algorithm.hpp
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@ -11,8 +11,8 @@
#include <functional>
#include <tuple>
template<typename F, typename Tuple> auto NzApply(F&& fn, Tuple&& t);
template<typename T> void NzHashCombine(std::size_t& seed, const T& v);
template<typename F, typename... ArgsT> void NzUnpackTuple(F func, const std::tuple<ArgsT...>& t);
#include <Nazara/Core/Algorithm.inl>

31
include/Nazara/Core/Algorithm.inl
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@ -8,27 +8,20 @@
#include <Nazara/Core/Debug.hpp>
///TODO: Améliorer l'implémentation de UnpackTuple
template<unsigned int N>
struct NzImplTupleUnpack
// http://www.cppsamples.com/common-tasks/apply-tuple-to-function.html
template<typename F, typename Tuple, size_t ...S >
auto NzApplyImpl(F&& fn, Tuple&& t, std::index_sequence<S...>)
{
template <typename F, typename... ArgsT, typename... Args>
void operator()(F func, const std::tuple<ArgsT...>& t, Args&... args)
{
NzImplTupleUnpack<N-1>()(func, t, std::get<N-1>(t), args...);
return std::forward<F>(fn)(std::get<S>(std::forward<Tuple>(t))...);
}
};
template<>
struct NzImplTupleUnpack<0>
template<typename F, typename Tuple>
auto NzApply(F&& fn, Tuple&& t)
{
template <typename F, typename... ArgsT, typename... Args>
void operator()(F func, const std::tuple<ArgsT...>&, Args&... args)
{
func(args...);
std::size_t constexpr tSize = std::tuple_size<typename std::remove_reference<Tuple>::type>::value;
return NzApplyImpl(std::forward<F>(fn), std::forward<Tuple>(t), std::make_index_sequence<tSize>());
}
};
// Algorithme venant de CityHash par Google
// http://stackoverflow.com/questions/8513911/how-to-create-a-good-hash-combine-with-64-bit-output-inspired-by-boosthash-co
@ -47,10 +40,4 @@ void NzHashCombine(std::size_t& seed, const T& v)
seed = static_cast<std::size_t>(b * kMul);
}
template<typename F, typename... ArgsT>
void NzUnpackTuple(F func, const std::tuple<ArgsT...>& t)
{
NzImplTupleUnpack<sizeof...(ArgsT)>()(func, t);
}
#include <Nazara/Core/DebugOff.hpp>

2
include/Nazara/Core/Functor.inl
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@ -26,7 +26,7 @@ m_args(std::forward<Args>(args)...)
template<typename F, typename... Args>
void NzFunctorWithArgs<F, Args...>::Run()
{
NzUnpackTuple(m_func, m_args);
NzApply(m_func, m_args);
}