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Reify implementation of node_handle's swap

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This commit is contained in:
Christian Mazakas
2023-02-19 21:14:08 -08:00
parent 34ed463bea
commit 343e344582
1 changed files with 21 additions and 24 deletions
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45
include/boost/unordered/detail/foa/node_handle.hpp
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@ -160,33 +160,30 @@ struct node_handle_base
boost::allocator_is_always_equal<Allocator>::type::value||
boost::allocator_propagate_on_container_swap<Allocator>::type::value)
{
using std::swap;
if(this!=&nh){
if(empty()){
if(nh.empty()) {
/* nothing to do here */
} else {
emplace(nh.p_, nh.al());
nh.reset();
}
}else{
if(nh.empty()){
nh.emplace(p_,al());
reset();
}else{
bool const pocs=
boost::allocator_propagate_on_container_swap<
Allocator>::type::value;
bool const pocs=
boost::allocator_propagate_on_container_swap<Allocator>::type::value;
BOOST_ASSERT(pocs || al()==nh.al());
if (!empty()&&!nh.empty()){
BOOST_ASSERT(pocs || al()==nh.al());
node_value_type *p=p_;
p_=nh.p_;
nh.p_=p;
if(pocs){
swap(al(),nh.al());
using std::swap;
swap(p_,nh.p_);
if(pocs)swap(al(),nh.al());
}
}
return;
}
if (empty()&&nh.empty()){return;}
if (empty()){
emplace(nh.p_,nh.al());
nh.clear();
}else{
nh.emplace(p_,al());
clear();
}
}