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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2006-2013
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
//[doc_auto_unlink_code
#include <boost/intrusive/list.hpp>
#include <cassert>
using namespace boost::intrusive;
typedef list_base_hook<link_mode<auto_unlink> > auto_unlink_hook;
class MyClass : public auto_unlink_hook
//This hook removes the node in the destructor
{
int int_;
public:
MyClass(int i = 0) : int_(i) {}
int get_int() { return int_; }
void unlink() { auto_unlink_hook::unlink(); }
bool is_linked() { return auto_unlink_hook::is_linked(); }
};
//Define a list that will store values using the base hook
//The list can't have constant-time size!
typedef list< MyClass, constant_time_size<false> > List;
int main()
{
//Create the list
List l;
{
//Create myclass and check it's linked
MyClass myclass;
assert(myclass.is_linked() == false);
//Insert the object
l.push_back(myclass);
//Check that we have inserted the object
assert(l.empty() == false);
assert(&l.front() == &myclass);
assert(myclass.is_linked() == true);
//Now myclass' destructor will unlink it
//automatically
}
//Check auto-unlink has been executed
assert(l.empty() == true);
{
//Now test the unlink() function
//Create myclass and check it's linked
MyClass myclass;
assert(myclass.is_linked() == false);
//Insert the object
l.push_back(myclass);
//Check that we have inserted the object
assert(l.empty() == false);
assert(&l.front() == &myclass);
assert(myclass.is_linked() == true);
//Now unlink the node
myclass.unlink();
//Check auto-unlink has been executed
assert(l.empty() == true);
}
return 0;
}
//]
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