General Purpose library for Freestanding C++ and POSIX systems
Du kan inte välja fler än 25 ämnen Ämnen måste starta med en bokstav eller siffra, kan innehålla bindestreck ('-') och vara max 35 tecken långa.
 
 

77 rader
2.0 KiB

#pragma once
#include "gp/algorithm/tmp_manip.hpp"
#include "gp/range.hpp"
namespace gp{
template<typename T>
typename gp::remove_reference<T>::type&& move(T&& value)
{
return (typename gp::remove_reference<T>::type&&)value;
}
template<typename T>
constexpr T&& forward(typename gp::remove_reference<T>::type& t) noexcept
{
return static_cast<T&&>(t);
}
template<typename T>
constexpr T&& forward(typename gp::remove_reference<T>::type&& t) noexcept
{
static_assert(!std::is_lvalue_reference_v<T>,"bad forward of rvalue as lvalue");
return static_cast<T&&>(t);
}
template<typename T>
constexpr void swap(
T& lhs,
T& rhs
)
{
auto tmp = lhs;
lhs = rhs;
rhs = tmp;
}
template<typename T>
constexpr void swap(
T&& lhs,
T&& rhs
)
{
auto tmp = lhs;
lhs = rhs;
rhs = tmp;
}
template<typename range_in, typename range_out>
nameless_range<typename range_out::associated_iterator> move(range_in src, range_out dest)
{
if(src.size()>dest.size())
return nameless_range<typename range_out::associated_iterator>(dest.begin(), dest.end());
auto in = src.begin();
auto in_close = src.end();
auto out = dest.begin();
while(in != in_close)
{
*(out++) = gp::move(*(in++));
}
return nameless_range<typename range_out::associated_iterator>{out, dest.end()};
}
template<typename range_in, typename range_out>
nameless_range<typename gp::remove_reference<range_out>::type::associated_iterator> move_uninitialized(range_in&& src, range_out&& dest)
{
using T = typename gp::remove_reference<decltype(*dest.begin())>::type;
if(src.size()>dest.size())
return nameless_range<typename gp::remove_reference<range_out>::type::associated_iterator>(dest.begin(), dest.end());
auto in = src.begin();
auto in_close = src.end();
auto out = dest.begin();
while(in != in_close)
{
new(&*(out++)) T{gp::move(*(in++))};
}
return nameless_range<typename gp::remove_reference<range_out>::type::associated_iterator>{out, dest.end()};
}
}