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