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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)
#ifndef TEST_VIRTUAL_PTR_VALUE_SEMANTICS_HPP
#define TEST_VIRTUAL_PTR_VALUE_SEMANTICS_HPP
#include <boost/openmethod.hpp>
#include <boost/openmethod/policies/vptr_map.hpp>
#include <boost/openmethod/initialize.hpp>
#include <boost/openmethod/interop/std_unique_ptr.hpp>
#include "test_util.hpp"
#include <utility>
using namespace boost::openmethod;
using namespace policies;
using namespace detail;
struct Animal {
virtual ~Animal() {
}
Animal() = default;
Animal(const Animal&) = delete;
};
struct Cat : virtual Animal {};
struct Dog : Animal {};
template<class Left, class Right>
constexpr bool construct_assign_ok =
std::is_constructible_v<Left, Right> && std::is_assignable_v<Left, Right>;
struct NonPolymorphic {};
template<class Registry>
void init_test() {
BOOST_OPENMETHOD_REGISTER(use_classes<Animal, Cat, Dog, Registry>);
struct id;
// without following line, no methods, no v-tables
(void)&method<id, auto(virtual_ptr<Animal, Registry>)->void, Registry>::fn;
initialize<Registry>();
}
struct direct_vector : test_registry_<__COUNTER__> {};
struct indirect_vector : test_registry_<__COUNTER__>::with<indirect_vptr> {};
struct direct_map
: test_registry_<__COUNTER__>::with<vptr_map<>>::without<type_hash> {};
struct indirect_map : direct_map::with<indirect_vptr> {};
using test_policies = boost::mp11::mp_list<
direct_vector, indirect_vector, direct_map, indirect_map>;
using test_classes = boost::mp11::mp_list<Dog, Cat>;
template<
template<class... Class> class smart_ptr,
template<class... Class> class other_smart_ptr, class Registry>
struct check_illegal_smart_ops {
// a virtual_ptr cannot be constructed from a smart_ptr to a different class
static_assert(!std::is_constructible_v<
virtual_ptr<smart_ptr<Cat>, Registry>, smart_ptr<Dog>>);
// a virtual_ptr cannot be constructed from const smart_ptr
static_assert(
!std::is_constructible_v<
virtual_ptr<smart_ptr<Animal>, Registry>, smart_ptr<const Animal>>);
// a smart virtual_ptr cannot be constructed from a plain reference or
// pointer
static_assert(!std::is_constructible_v<
virtual_ptr<smart_ptr<Animal>, Registry>, Animal&>);
static_assert(!std::is_constructible_v<
virtual_ptr<smart_ptr<Animal>, Registry>, Animal*>);
static_assert(!std::is_constructible_v<
smart_ptr<Animal>, const other_smart_ptr<Animal>&>);
// smart_ptr<Animal> p{other_smart_ptr<Animal>()};
static_assert(!std::is_constructible_v<
virtual_ptr<smart_ptr<Animal>, Registry>,
virtual_ptr<Animal, Registry>>);
// ---------------------
// test other properties
static_assert(IsSmartPtr<smart_ptr<Animal>, Registry>);
static_assert(IsSmartPtr<smart_ptr<const Animal>, Registry>);
static_assert(
std::is_same_v<
typename virtual_ptr<smart_ptr<Animal>, Registry>::element_type,
Animal>);
static_assert(
std::is_same_v<
decltype(std::declval<virtual_ptr<smart_ptr<Animal>, Registry>>()
.get()),
Animal*>);
static_assert(
std::is_same_v<
decltype(*std::declval<virtual_ptr<smart_ptr<Animal>, Registry>>()),
Animal&>);
static_assert(
std::is_same_v<
decltype(std::declval<virtual_ptr<smart_ptr<Animal>, Registry>>()
.pointer()),
const smart_ptr<Animal>&>);
static_assert(
std::is_same_v<
decltype(*std::declval<virtual_ptr<smart_ptr<Animal>, Registry>>()),
Animal&>);
};
#endif // TEST_VIRTUAL_PTR_VALUE_SEMANTICS_HPP
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