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// Copyright (c) 2018-2025 Jean-Louis Leroy
// 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)
#include <iostream>
#include <type_traits>
#define BOOST_TEST_MODULE core
#include <boost/test/unit_test.hpp>
#include <boost/openmethod/preamble.hpp>
using namespace boost::openmethod;
using namespace boost::openmethod::detail;
namespace mp11 = boost::mp11;
#include <boost/openmethod.hpp>
#include <boost/openmethod/inplace_vptr.hpp>
#include <boost/openmethod/interop/std_shared_ptr.hpp>
#include "test_util.hpp"
namespace test_virtual {
struct base {
virtual ~base() {
}
};
struct a : base {};
struct b : base {};
struct c : base {};
struct d : base {};
struct e : base {};
struct f : base {};
static_assert(std::is_same_v<
virtual_traits<base&, default_registry>::virtual_type, base>);
static_assert(
std::is_same_v<
virtual_traits<const base&, default_registry>::virtual_type, base>);
static_assert(std::is_same_v<
virtual_traits<base&&, default_registry>::virtual_type, base>);
static_assert(std::is_same_v<
mp11::mp_filter<
is_virtual, mp11::mp_list<virtual_<a&>, b, virtual_<c&>>>,
mp11::mp_list<virtual_<a&>, virtual_<c&>>>);
static_assert(std::is_same_v<remove_virtual_<virtual_<a&>>, a&>);
static_assert(std::is_same_v<virtual_type<a&, default_registry>, a>);
static_assert(
std::is_same_v<
virtual_types<mp11::mp_list<
virtual_<std::shared_ptr<a>>, b, virtual_<std::shared_ptr<c>>>>,
mp11::mp_list<std::shared_ptr<a>, std::shared_ptr<c>>>);
static_assert(std::is_same_v<
overrider_virtual_types<
mp11::mp_list<virtual_<a&>, b, virtual_<c&>>,
mp11::mp_list<d&, e, f&>, default_registry>,
mp11::mp_list<d, f>>);
static_assert(
std::is_same_v<virtual_type<std::shared_ptr<a>, default_registry>, a>);
static_assert(
std::is_same_v<
virtual_traits<virtual_ptr<a>, default_registry>::virtual_type, a>);
static_assert(std::is_same_v<
select_overrider_virtual_type_aux<
virtual_ptr<base>, virtual_ptr<a>, default_registry>::type,
a>);
static_assert(
std::is_same_v<
overrider_virtual_types<
mp11::mp_list<virtual_ptr<a>, b, virtual_ptr<c>>,
mp11::mp_list<virtual_ptr<d>, e, virtual_ptr<f>>, default_registry>,
mp11::mp_list<d, f>>);
static_assert(
std::is_same_v<
overrider_virtual_types<
mp11::mp_list<
const virtual_ptr<base>&, b, const virtual_ptr<base>&>,
mp11::mp_list<const virtual_ptr<d>&, e, const virtual_ptr<f>&>,
default_registry>,
mp11::mp_list<d, f>>);
static_assert(
std::is_same_v<
overrider_virtual_types<
mp11::mp_list<
virtual_<std::shared_ptr<a>>, b, virtual_<std::shared_ptr<c>>>,
mp11::mp_list<std::shared_ptr<d>, e, std::shared_ptr<f>>,
default_registry>,
mp11::mp_list<d, f>>);
static_assert(std::is_same_v<
mp11::mp_transform<
remove_virtual_, mp11::mp_list<virtual_<a&>, virtual_<c&>>>,
mp11::mp_list<a&, c&>>);
static_assert(
std::is_same_v<
mp11::mp_transform_q<
mp11::mp_bind_back<virtual_type, default_registry>,
mp11::mp_transform<
remove_virtual_, mp11::mp_list<virtual_<a&>, virtual_<c&>>>>,
mp11::mp_list<a, c>>);
static_assert(
std::is_same_v<
mp11::mp_transform_q<
mp11::mp_bind_back<virtual_type, default_registry>,
mp11::mp_transform<
remove_virtual_,
mp11::mp_filter<
is_virtual, mp11::mp_list<virtual_<a&>, b, virtual_<c&>>>>>,
mp11::mp_list<a, c>>);
struct registry1 : default_registry::with<unique<registry1>> {};
struct registry2 : default_registry::with<unique<registry2>> {};
struct non_polymorphic_inplace_vptr {};
auto boost_openmethod_vptr(const non_polymorphic_inplace_vptr&, void*)
-> vptr_type;
// clang-format on
static_assert(std::is_same_v<
virtual_types<mp11::mp_list<virtual_<a&>, b, virtual_<c&>>>,
mp11::mp_list<a&, c&>>);
static_assert(detail::is_registry<default_registry>);
struct not_a_policy {};
static_assert(!detail::is_registry<not_a_policy>);
BOOST_AUTO_TEST_CASE(test_init_type_ids) {
type_id ids[2];
auto last = init_type_ids<default_registry, mp11::mp_list<a&, b&>>::fn(ids);
BOOST_TEST_REQUIRE(last - ids == 2);
BOOST_TEST_REQUIRE(ids[0] == type_id(&typeid(a)));
BOOST_TEST_REQUIRE(ids[1] == type_id(&typeid(b)));
}
} // namespace test_virtual
namespace test_macros {
// Check that macros can handle commas in parameter and return types.
struct Animal {
virtual ~Animal() = default;
};
BOOST_OPENMETHOD(poke, (virtual_<Animal&>), std::tuple<int, int>);
} // namespace test_macros
namespace casts {
struct Animal {
virtual ~Animal() {
}
int a{1};
};
struct Mammal : virtual Animal {
int m{2};
};
struct Carnivore : virtual Animal {
int c{3};
};
struct Dog : Mammal, Carnivore {
int d{4};
};
auto mammal_this(const Mammal& obj) -> const void* {
return &obj;
}
auto carnivore_this(const Carnivore& obj) -> const void* {
return &obj;
}
auto dog_this(const Dog& obj) -> const void* {
return &obj;
}
BOOST_AUTO_TEST_CASE(casts) {
Dog dog;
const Animal& animal = dog;
const Mammal& mammal = dog;
const Carnivore& carnivore = dog;
BOOST_TEST(
(&virtual_traits<const Animal&, default_registry>::cast<const Mammal&>(
animal)
.m) == &dog.m);
BOOST_TEST(
(&virtual_traits<const Animal&, default_registry>::cast<
const Carnivore&>(animal)
.c) == &dog.c);
BOOST_TEST(
(&virtual_traits<const Animal&, default_registry>::cast<const Mammal&>(
animal)
.m) == &dog.m);
BOOST_TEST(
(&virtual_traits<const Animal&, default_registry>::cast<const Dog&>(
animal)
.d) == &dog.d);
BOOST_TEST(
(&virtual_traits<const Mammal&, default_registry>::cast<const Dog&>(
mammal)
.d) == &dog.d);
BOOST_TEST(
(&virtual_traits<const Carnivore&, default_registry>::cast<const Dog&>(
carnivore)
.c) == &dog.c);
using virtual_animal_t = virtual_type<const Animal&, default_registry>;
static_assert(std::is_same_v<virtual_animal_t, Animal>, "animal");
using virtual_mammal_t = virtual_type<const Mammal&, default_registry>;
static_assert(std::is_same_v<virtual_mammal_t, Mammal>, "mammal");
}
} // namespace casts
namespace test_use_classes {
struct Animal {};
struct Dog : public Animal {};
struct Bulldog : public Dog {};
struct Cat : public Animal {};
struct Dolphin : public Animal {};
static_assert(
std::is_same_v<
inheritance_map<Animal, Dog, Bulldog, Cat, Dolphin>,
mp11::mp_list<
mp11::mp_list<Animal, Animal>, mp11::mp_list<Dog, Animal, Dog>,
mp11::mp_list<Bulldog, Animal, Dog, Bulldog>,
mp11::mp_list<Cat, Animal, Cat>,
mp11::mp_list<Dolphin, Animal, Dolphin>>>);
static_assert(
std::is_same_v<
detail::use_classes_tuple_type<Animal, Dog, Bulldog, Cat, Dolphin>,
std::tuple<
use_class_aux<default_registry, mp11::mp_list<Animal, Animal>>,
use_class_aux<default_registry, mp11::mp_list<Dog, Animal, Dog>>,
use_class_aux<
default_registry, mp11::mp_list<Bulldog, Animal, Dog, Bulldog>>,
use_class_aux<default_registry, mp11::mp_list<Cat, Animal, Cat>>,
use_class_aux<
default_registry, mp11::mp_list<Dolphin, Animal, Dolphin>>>>);
} // namespace test_use_classes
namespace TEST_NS {
struct Animal {
friend auto boost_openmethod_vptr(const Animal&, void*) -> vptr_type;
};
static_assert(detail::has_vptr_fn<Animal, default_registry>);
} // namespace TEST_NS
namespace TEST_NS {
using test_registry = test_registry_<__COUNTER__>;
const detail::word value;
struct Animal {
friend auto boost_openmethod_vptr(const Animal&, test_registry*) {
return &value;
}
};
static_assert(detail::has_vptr_fn<Animal, test_registry>);
static_assert(!detail::has_vptr_fn<Animal, default_registry>);
BOOST_AUTO_TEST_CASE(vptr_from_function) {
initialize<test_registry>();
BOOST_TEST(detail::acquire_vptr<test_registry>(Animal{}) == &value);
}
} // namespace TEST_NS
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