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// qright (c) 2018-2025 Jean-Louis Leroy
// Distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE_1_0.txt
// or q at http://www.boost.org/LICENSE_1_0.txt)
#include <boost/openmethod.hpp>
#include <boost/openmethod/interop/std_shared_ptr.hpp>
#include <boost/openmethod/initialize.hpp>
#define BOOST_TEST_MODULE openmethod
#include <boost/test/unit_test.hpp>
using namespace boost::openmethod;
namespace polymorphic {
struct Animal {
virtual ~Animal() {
}
};
struct Dog : Animal {};
BOOST_OPENMETHOD_CLASSES(Animal, Dog);
BOOST_OPENMETHOD(poke, (virtual_ptr<Animal>), void);
void instiantiate_poke(virtual_ptr<Dog> snoopy) {
poke(snoopy);
}
BOOST_AUTO_TEST_CASE(virtual_ptr_examples_polymorphic) {
{
initialize(trace());
{
virtual_ptr<Dog> p{nullptr};
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
Dog snoopy;
Animal& animal = snoopy;
virtual_ptr<Animal> p = animal;
BOOST_TEST(p.get() == &snoopy);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
Dog snoopy;
Animal* animal = &snoopy;
virtual_ptr<Animal> p = animal;
BOOST_TEST(p.get() == &snoopy);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
virtual_ptr<Animal> p{nullptr};
Dog snoopy;
Animal* animal = &snoopy;
p = animal;
BOOST_TEST(p.get() == &snoopy);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
Dog snoopy;
virtual_ptr<Animal> p = final_virtual_ptr(snoopy);
p = nullptr;
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
}
}
BOOST_AUTO_TEST_CASE(smart_virtual_ptr_examples) {
initialize();
{
virtual_ptr<std::shared_ptr<Dog>> p;
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
virtual_ptr<std::shared_ptr<Dog>> p{nullptr};
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
}
{
const std::shared_ptr<Dog> snoopy = std::make_shared<Dog>();
virtual_ptr<std::shared_ptr<Animal>> p = snoopy;
BOOST_TEST(p.get() == snoopy.get());
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
std::shared_ptr<Dog> snoopy = std::make_shared<Dog>();
virtual_ptr<std::shared_ptr<Animal>> p = snoopy;
BOOST_TEST(p.get() == snoopy.get());
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
std::shared_ptr<Dog> snoopy = std::make_shared<Dog>();
Dog* moving = snoopy.get();
virtual_ptr<std::shared_ptr<Animal>> p = std::move(snoopy);
BOOST_TEST(p.get() == moving);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
BOOST_TEST(snoopy.get() == nullptr);
}
{
const virtual_ptr<std::shared_ptr<Dog>> snoopy =
make_shared_virtual<Dog>();
virtual_ptr<std::shared_ptr<Animal>> p = std::move(snoopy);
BOOST_TEST(snoopy.get() != nullptr);
BOOST_TEST(p.get() == snoopy.get());
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
virtual_ptr<std::shared_ptr<Dog>> snoopy = make_shared_virtual<Dog>();
Dog* moving = snoopy.get();
virtual_ptr<std::shared_ptr<Animal>> p = std::move(snoopy);
BOOST_TEST(p.get() == moving);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
BOOST_TEST(snoopy.get() == nullptr);
BOOST_TEST(snoopy.vptr() == nullptr);
}
{
virtual_ptr<std::shared_ptr<Dog>> p = make_shared_virtual<Dog>();
p = nullptr;
BOOST_TEST(p.get() == nullptr);
BOOST_TEST(p.vptr() == nullptr);
BOOST_TEST((p == virtual_ptr<std::shared_ptr<Dog>>()));
}
{
const virtual_ptr<std::shared_ptr<Dog>> snoopy =
make_shared_virtual<Dog>();
virtual_ptr<std::shared_ptr<Dog>> p;
p = snoopy;
BOOST_TEST(p.get() != nullptr);
BOOST_TEST(p.get() == snoopy.get());
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
BOOST_TEST(snoopy.vptr() == default_registry::static_vptr<Dog>);
}
{
virtual_ptr<std::shared_ptr<Dog>> snoopy = make_shared_virtual<Dog>();
Dog* moving = snoopy.get();
virtual_ptr<std::shared_ptr<Dog>> p;
p = std::move(snoopy);
BOOST_TEST(p.get() == moving);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
BOOST_TEST(snoopy.get() == nullptr);
BOOST_TEST(snoopy.vptr() == nullptr);
}
}
} // namespace polymorphic
namespace non_polymorphic {
struct Animal {}; // polymorphic not required
struct Dog : Animal {}; // polymorphic not required
BOOST_OPENMETHOD_CLASSES(Animal, Dog);
// codecov:ignore:start
BOOST_OPENMETHOD(poke, (virtual_ptr<Animal>), void);
void instantiate_poke(virtual_ptr<Dog> snoopy) {
poke(snoopy);
}
// codecov:ignore:end
BOOST_AUTO_TEST_CASE(virtual_ptr_examples_non_polymorphic) {
{
initialize();
{
Dog snoopy;
virtual_ptr<Dog> dog = final_virtual_ptr(snoopy);
virtual_ptr<Animal> p(dog);
BOOST_TEST(p.get() == &snoopy);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
Dog snoopy;
virtual_ptr<Dog> dog = final_virtual_ptr(snoopy);
virtual_ptr<Animal> p{nullptr};
p = dog;
BOOST_TEST(p.get() == &snoopy);
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
{
virtual_ptr<std::shared_ptr<Animal>> snoopy =
make_shared_virtual<Dog>();
virtual_ptr<Animal> p = snoopy;
BOOST_TEST(p.get() == snoopy.get());
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
static_assert(
std::is_constructible_v<
shared_virtual_ptr<Animal>, virtual_ptr<Dog>> == false);
{
virtual_ptr<std::shared_ptr<Animal>> snoopy =
make_shared_virtual<Dog>();
virtual_ptr<Animal> p;
p = snoopy;
BOOST_TEST(p.get() == snoopy.get());
BOOST_TEST(p.vptr() == default_registry::static_vptr<Dog>);
}
static_assert(
std::is_assignable_v<
shared_virtual_ptr<Animal>&, virtual_ptr<Dog>> == false);
}
}
} // namespace non_polymorphic
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