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/*
Copyright 2019 Glen Joseph Fernandes
(glenjofe@gmail.com)
Distributed under the Boost Software License, Version 1.0.
(http://www.boost.org/LICENSE_1_0.txt)
*/
#include <boost/config.hpp>
#if !defined(BOOST_NO_CXX11_SMART_PTR) && !defined(BOOST_NO_CXX11_ALLOCATOR)
#include <boost/smart_ptr/allocate_unique.hpp>
#include <boost/core/lightweight_test.hpp>
struct allow { };
template<class T = void>
struct creator {
typedef T value_type;
template<class U>
struct rebind {
typedef creator<U> other;
};
creator() { }
template<class U>
creator(const creator<U>&) { }
T* allocate(std::size_t size) {
return static_cast<T*>(::operator new(sizeof(T) * size));
}
void deallocate(T* ptr, std::size_t) {
::operator delete(ptr);
}
template<class U>
void construct(U* ptr) {
::new(static_cast<void*>(ptr)) U(allow());
}
template<class U>
void destroy(U* ptr) {
ptr->~U();
}
};
template<class T, class U>
inline bool
operator==(const creator<T>&, const creator<U>&)
{
return true;
}
template<class T, class U>
inline bool
operator!=(const creator<T>&, const creator<U>&)
{
return false;
}
class type {
public:
static unsigned instances;
explicit type(allow) {
++instances;
}
~type() {
--instances;
}
private:
type(const type&);
type& operator=(const type&);
};
unsigned type::instances = 0;
int main()
{
{
std::unique_ptr<type,
boost::alloc_deleter<type, creator<type> > > result =
boost::allocate_unique<type>(creator<type>());
BOOST_TEST(result.get() != 0);
BOOST_TEST(type::instances == 1);
result.reset();
BOOST_TEST(type::instances == 0);
}
{
std::unique_ptr<const type,
boost::alloc_deleter<const type, creator<> > > result =
boost::allocate_unique<const type>(creator<>());
BOOST_TEST(result.get() != 0);
BOOST_TEST(type::instances == 1);
result.reset();
BOOST_TEST(type::instances == 0);
}
return boost::report_errors();
}
#else
int main()
{
return 0;
}
#endif
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