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Ralf W. Grosse-Kunstleve 2021-01-12 10:28:17 -08:00
parent cfc848a137
commit e7aea026bb
2 changed files with 340 additions and 379 deletions
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346
include/pybind11/smart_holder_poc.h
View File

@ -48,216 +48,202 @@ namespace memory {
template <typename T> template <typename T>
struct guarded_builtin_delete { struct guarded_builtin_delete {
bool* flag_ptr; bool *flag_ptr;
explicit guarded_builtin_delete(bool* guard_flag_ptr) explicit guarded_builtin_delete(bool *guard_flag_ptr) : flag_ptr{guard_flag_ptr} {}
: flag_ptr{guard_flag_ptr} {} void operator()(T *raw_ptr) {
void operator()(T* raw_ptr) { if (*flag_ptr)
if (*flag_ptr) delete raw_ptr; delete raw_ptr;
} }
}; };
template <typename T, typename D> template <typename T, typename D>
struct guarded_custom_deleter { struct guarded_custom_deleter {
bool* flag_ptr; bool *flag_ptr;
explicit guarded_custom_deleter(bool* guard_flag_ptr) explicit guarded_custom_deleter(bool *guard_flag_ptr) : flag_ptr{guard_flag_ptr} {}
: flag_ptr{guard_flag_ptr} {} void operator()(T *raw_ptr) {
void operator()(T* raw_ptr) { if (*flag_ptr)
if (*flag_ptr) D()(raw_ptr); D()(raw_ptr);
} }
}; };
struct smart_holder { struct smart_holder {
const std::type_info* rtti_held; const std::type_info *rtti_held;
const std::type_info* rtti_uqp_del; const std::type_info *rtti_uqp_del;
std::shared_ptr<void> vptr; std::shared_ptr<void> vptr;
bool vptr_deleter_guard_flag; bool vptr_deleter_guard_flag;
bool vptr_is_using_noop_deleter : 1; bool vptr_is_using_noop_deleter : 1;
bool vptr_is_using_builtin_delete : 1; bool vptr_is_using_builtin_delete : 1;
bool vptr_is_external_shared_ptr : 1; bool vptr_is_external_shared_ptr : 1;
smart_holder() smart_holder()
: rtti_held{nullptr}, : rtti_held{nullptr}, rtti_uqp_del{nullptr}, vptr_deleter_guard_flag{false},
rtti_uqp_del{nullptr}, vptr_is_using_noop_deleter{false}, vptr_is_using_builtin_delete{false},
vptr_deleter_guard_flag{false}, vptr_is_external_shared_ptr{false} {}
vptr_is_using_noop_deleter{false},
vptr_is_using_builtin_delete{false},
vptr_is_external_shared_ptr{false} {}
bool has_pointee() const { return vptr.get() != nullptr; } bool has_pointee() const { return vptr.get() != nullptr; }
template <typename T> template <typename T>
void ensure_compatible_rtti_held(const char* context) const { void ensure_compatible_rtti_held(const char *context) const {
if (!rtti_held) { if (!rtti_held) {
throw std::runtime_error(std::string("Unpopulated holder (") + context + throw std::runtime_error(std::string("Unpopulated holder (") + context + ").");
")."); }
const std::type_info *rtti_requested = &typeid(T);
if (!(*rtti_requested == *rtti_held)) {
throw std::runtime_error(std::string("Incompatible type (") + context + ").");
}
} }
const std::type_info* rtti_requested = &typeid(T);
if (!(*rtti_requested == *rtti_held)) { template <typename D>
throw std::runtime_error(std::string("Incompatible type (") + context + void ensure_compatible_rtti_uqp_del(const char *context) const {
")."); if (!rtti_uqp_del) {
throw std::runtime_error(std::string("Missing unique_ptr deleter (") + context + ").");
}
const std::type_info *rtti_requested = &typeid(D);
if (!(*rtti_requested == *rtti_uqp_del)) {
throw std::runtime_error(std::string("Incompatible unique_ptr deleter (") + context
+ ").");
}
} }
}
template <typename D> void ensure_has_pointee(const char *context) const {
void ensure_compatible_rtti_uqp_del(const char* context) const { if (!has_pointee()) {
if (!rtti_uqp_del) { throw std::runtime_error(std::string("Disowned holder (") + context + ").");
throw std::runtime_error(std::string("Missing unique_ptr deleter (") + }
context + ").");
} }
const std::type_info* rtti_requested = &typeid(D);
if (!(*rtti_requested == *rtti_uqp_del)) { void ensure_vptr_is_using_builtin_delete(const char *context) const {
throw std::runtime_error( if (vptr_is_external_shared_ptr) {
std::string("Incompatible unique_ptr deleter (") + context + ")."); throw std::runtime_error(std::string("Cannot disown external shared_ptr (") + context
+ ").");
}
if (vptr_is_using_noop_deleter) {
throw std::runtime_error(std::string("Cannot disown non-owning holder (") + context
+ ").");
}
if (!vptr_is_using_builtin_delete) {
throw std::runtime_error(std::string("Cannot disown custom deleter (") + context
+ ").");
}
} }
}
void ensure_has_pointee(const char* context) const { void ensure_use_count_1(const char *context) const {
if (!has_pointee()) { if (vptr.get() == nullptr) {
throw std::runtime_error(std::string("Disowned holder (") + context + throw std::runtime_error(std::string("Cannot disown nullptr (") + context + ").");
")."); }
if (vptr.use_count() != 1) {
throw std::runtime_error(std::string("Cannot disown use_count != 1 (") + context
+ ").");
}
} }
}
void ensure_vptr_is_using_builtin_delete(const char* context) const { template <typename T>
if (vptr_is_external_shared_ptr) { static smart_holder from_raw_ptr_unowned(T *raw_ptr) {
throw std::runtime_error( smart_holder hld;
std::string("Cannot disown external shared_ptr (") + context + ")."); hld.rtti_held = &typeid(T);
hld.vptr_is_using_noop_deleter = true;
hld.vptr.reset(raw_ptr, guarded_builtin_delete<T>(&hld.vptr_deleter_guard_flag));
return hld;
} }
if (vptr_is_using_noop_deleter) {
throw std::runtime_error( template <typename T>
std::string("Cannot disown non-owning holder (") + context + ")."); T *as_raw_ptr_unowned() const {
static const char *context = "as_raw_ptr_unowned";
ensure_compatible_rtti_held<T>(context);
return static_cast<T *>(vptr.get());
} }
if (!vptr_is_using_builtin_delete) {
throw std::runtime_error(std::string("Cannot disown custom deleter (") + template <typename T>
context + ")."); T &lvalue_ref() const {
static const char *context = "lvalue_ref";
ensure_compatible_rtti_held<T>(context);
ensure_has_pointee(context);
return *static_cast<T *>(vptr.get());
} }
}
void ensure_use_count_1(const char* context) const { template <typename T>
if (vptr.get() == nullptr) { T &&rvalue_ref() const {
throw std::runtime_error(std::string("Cannot disown nullptr (") + static const char *context = "rvalue_ref";
context + ")."); ensure_compatible_rtti_held<T>(context);
ensure_has_pointee(context);
return std::move(*static_cast<T *>(vptr.get()));
} }
if (vptr.use_count() != 1) {
throw std::runtime_error(std::string("Cannot disown use_count != 1 (") + template <typename T>
context + ")."); static smart_holder from_raw_ptr_take_ownership(T *raw_ptr) {
smart_holder hld;
hld.rtti_held = &typeid(T);
hld.vptr_deleter_guard_flag = true;
hld.vptr_is_using_builtin_delete = true;
hld.vptr.reset(raw_ptr, guarded_builtin_delete<T>(&hld.vptr_deleter_guard_flag));
return hld;
} }
}
template <typename T> template <typename T>
static smart_holder from_raw_ptr_unowned(T* raw_ptr) { T *as_raw_ptr_release_ownership(const char *context = "as_raw_ptr_release_ownership") {
smart_holder hld; ensure_compatible_rtti_held<T>(context);
hld.rtti_held = &typeid(T); ensure_vptr_is_using_builtin_delete(context);
hld.vptr_is_using_noop_deleter = true; ensure_use_count_1(context);
hld.vptr.reset(raw_ptr, T *raw_ptr = static_cast<T *>(vptr.get());
guarded_builtin_delete<T>(&hld.vptr_deleter_guard_flag)); vptr_deleter_guard_flag = false;
return hld; vptr.reset();
} return raw_ptr;
}
template <typename T> template <typename T>
T* as_raw_ptr_unowned() const { static smart_holder from_unique_ptr(std::unique_ptr<T> &&unq_ptr) {
static const char* context = "as_raw_ptr_unowned"; smart_holder hld;
ensure_compatible_rtti_held<T>(context); hld.rtti_held = &typeid(T);
return static_cast<T*>(vptr.get()); hld.vptr_deleter_guard_flag = true;
} hld.vptr_is_using_builtin_delete = true;
hld.vptr.reset(unq_ptr.get(), guarded_builtin_delete<T>(&hld.vptr_deleter_guard_flag));
unq_ptr.release();
return hld;
}
template <typename T> template <typename T>
T& lvalue_ref() const { std::unique_ptr<T> as_unique_ptr() {
static const char* context = "lvalue_ref"; return std::unique_ptr<T>(as_raw_ptr_release_ownership<T>("as_unique_ptr"));
ensure_compatible_rtti_held<T>(context); }
ensure_has_pointee(context);
return *static_cast<T*>(vptr.get());
}
template <typename T> template <typename T, typename D>
T&& rvalue_ref() const { static smart_holder from_unique_ptr_with_deleter(std::unique_ptr<T, D> &&unq_ptr) {
static const char* context = "rvalue_ref"; smart_holder hld;
ensure_compatible_rtti_held<T>(context); hld.rtti_held = &typeid(T);
ensure_has_pointee(context); hld.rtti_uqp_del = &typeid(D);
return std::move(*static_cast<T*>(vptr.get())); hld.vptr_deleter_guard_flag = true;
} hld.vptr.reset(unq_ptr.get(), guarded_custom_deleter<T, D>(&hld.vptr_deleter_guard_flag));
unq_ptr.release();
return hld;
}
template <typename T> template <typename T, typename D>
static smart_holder from_raw_ptr_take_ownership(T* raw_ptr) { std::unique_ptr<T, D> as_unique_ptr_with_deleter() {
smart_holder hld; static const char *context = "as_unique_ptr_with_deleter";
hld.rtti_held = &typeid(T); ensure_compatible_rtti_held<T>(context);
hld.vptr_deleter_guard_flag = true; ensure_compatible_rtti_uqp_del<D>(context);
hld.vptr_is_using_builtin_delete = true; ensure_use_count_1(context);
hld.vptr.reset(raw_ptr, T *raw_ptr = static_cast<T *>(vptr.get());
guarded_builtin_delete<T>(&hld.vptr_deleter_guard_flag)); vptr_deleter_guard_flag = false;
return hld; vptr.reset();
} return std::unique_ptr<T, D>(raw_ptr);
}
template <typename T> template <typename T>
T* as_raw_ptr_release_ownership( static smart_holder from_shared_ptr(std::shared_ptr<T> shd_ptr) {
const char* context = "as_raw_ptr_release_ownership") { smart_holder hld;
ensure_compatible_rtti_held<T>(context); hld.rtti_held = &typeid(T);
ensure_vptr_is_using_builtin_delete(context); hld.vptr_is_external_shared_ptr = true;
ensure_use_count_1(context); hld.vptr = std::static_pointer_cast<void>(shd_ptr);
T* raw_ptr = static_cast<T*>(vptr.get()); return hld;
vptr_deleter_guard_flag = false; }
vptr.reset();
return raw_ptr;
}
template <typename T> template <typename T>
static smart_holder from_unique_ptr(std::unique_ptr<T>&& unq_ptr) { std::shared_ptr<T> as_shared_ptr() const {
smart_holder hld; static const char *context = "as_shared_ptr";
hld.rtti_held = &typeid(T); ensure_compatible_rtti_held<T>(context);
hld.vptr_deleter_guard_flag = true; return std::static_pointer_cast<T>(vptr);
hld.vptr_is_using_builtin_delete = true; }
hld.vptr.reset(unq_ptr.get(),
guarded_builtin_delete<T>(&hld.vptr_deleter_guard_flag));
unq_ptr.release();
return hld;
}
template <typename T>
std::unique_ptr<T> as_unique_ptr() {
return std::unique_ptr<T>(as_raw_ptr_release_ownership<T>("as_unique_ptr"));
}
template <typename T, typename D>
static smart_holder from_unique_ptr_with_deleter(
std::unique_ptr<T, D>&& unq_ptr) {
smart_holder hld;
hld.rtti_held = &typeid(T);
hld.rtti_uqp_del = &typeid(D);
hld.vptr_deleter_guard_flag = true;
hld.vptr.reset(unq_ptr.get(),
guarded_custom_deleter<T, D>(&hld.vptr_deleter_guard_flag));
unq_ptr.release();
return hld;
}
template <typename T, typename D>
std::unique_ptr<T, D> as_unique_ptr_with_deleter() {
static const char* context = "as_unique_ptr_with_deleter";
ensure_compatible_rtti_held<T>(context);
ensure_compatible_rtti_uqp_del<D>(context);
ensure_use_count_1(context);
T* raw_ptr = static_cast<T*>(vptr.get());
vptr_deleter_guard_flag = false;
vptr.reset();
return std::unique_ptr<T, D>(raw_ptr);
}
template <typename T>
static smart_holder from_shared_ptr(std::shared_ptr<T> shd_ptr) {
smart_holder hld;
hld.rtti_held = &typeid(T);
hld.vptr_is_external_shared_ptr = true;
hld.vptr = std::static_pointer_cast<void>(shd_ptr);
return hld;
}
template <typename T>
std::shared_ptr<T> as_shared_ptr() const {
static const char* context = "as_shared_ptr";
ensure_compatible_rtti_held<T>(context);
return std::static_pointer_cast<T>(vptr);
}
}; };
} // namespace memory } // namespace memory
} // namespace pybindit } // namespace pybindit

373
tests/core/smart_holder_poc_test.cpp
View File

@ -8,319 +8,294 @@ using pybindit::memory::smart_holder;
namespace helpers { namespace helpers {
struct movable_int { struct movable_int {
int valu; int valu;
movable_int(int v) : valu{v} {} movable_int(int v) : valu{v} {}
movable_int(movable_int&& other) { movable_int(movable_int &&other) {
valu = other.valu; valu = other.valu;
other.valu = 91; other.valu = 91;
} }
}; };
template <typename T> template <typename T>
struct functor_builtin_delete { struct functor_builtin_delete {
void operator()(T* ptr) { delete ptr; } void operator()(T *ptr) { delete ptr; }
}; };
template <typename T> template <typename T>
struct functor_other_delete : functor_builtin_delete<T> {}; struct functor_other_delete : functor_builtin_delete<T> {};
} // namespace helpers } // namespace helpers
TEST_CASE("from_raw_ptr_unowned+as_raw_ptr_unowned", "[S]") { TEST_CASE("from_raw_ptr_unowned+as_raw_ptr_unowned", "[S]") {
static int value = 19; static int value = 19;
auto hld = smart_holder::from_raw_ptr_unowned(&value); auto hld = smart_holder::from_raw_ptr_unowned(&value);
REQUIRE(*hld.as_raw_ptr_unowned<int>() == 19); REQUIRE(*hld.as_raw_ptr_unowned<int>() == 19);
} }
TEST_CASE("from_raw_ptr_unowned+lvalue_ref", "[S]") { TEST_CASE("from_raw_ptr_unowned+lvalue_ref", "[S]") {
static int value = 19; static int value = 19;
auto hld = smart_holder::from_raw_ptr_unowned(&value); auto hld = smart_holder::from_raw_ptr_unowned(&value);
REQUIRE(hld.lvalue_ref<int>() == 19); REQUIRE(hld.lvalue_ref<int>() == 19);
} }
TEST_CASE("from_raw_ptr_unowned+rvalue_ref", "[S]") { TEST_CASE("from_raw_ptr_unowned+rvalue_ref", "[S]") {
helpers::movable_int orig(19); helpers::movable_int orig(19);
{ {
auto hld = smart_holder::from_raw_ptr_unowned(&orig); auto hld = smart_holder::from_raw_ptr_unowned(&orig);
helpers::movable_int othr(hld.rvalue_ref<helpers::movable_int>()); helpers::movable_int othr(hld.rvalue_ref<helpers::movable_int>());
REQUIRE(othr.valu == 19); REQUIRE(othr.valu == 19);
REQUIRE(orig.valu == 91); REQUIRE(orig.valu == 91);
} }
} }
TEST_CASE("from_raw_ptr_unowned+as_raw_ptr_release_ownership", "[E]") { TEST_CASE("from_raw_ptr_unowned+as_raw_ptr_release_ownership", "[E]") {
static int value = 19; static int value = 19;
auto hld = smart_holder::from_raw_ptr_unowned(&value); auto hld = smart_holder::from_raw_ptr_unowned(&value);
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(hld.as_raw_ptr_release_ownership<int>(),
hld.as_raw_ptr_release_ownership<int>(), "Cannot disown non-owning holder (as_raw_ptr_release_ownership).");
"Cannot disown non-owning holder (as_raw_ptr_release_ownership).");
} }
TEST_CASE("from_raw_ptr_unowned+as_unique_ptr", "[E]") { TEST_CASE("from_raw_ptr_unowned+as_unique_ptr", "[E]") {
static int value = 19; static int value = 19;
auto hld = smart_holder::from_raw_ptr_unowned(&value); auto hld = smart_holder::from_raw_ptr_unowned(&value);
REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(),
"Cannot disown non-owning holder (as_unique_ptr)."); "Cannot disown non-owning holder (as_unique_ptr).");
} }
TEST_CASE("from_raw_ptr_unowned+as_unique_ptr_with_deleter", "[E]") { TEST_CASE("from_raw_ptr_unowned+as_unique_ptr_with_deleter", "[E]") {
static int value = 19; static int value = 19;
auto hld = smart_holder::from_raw_ptr_unowned(&value); auto hld = smart_holder::from_raw_ptr_unowned(&value);
auto condense_for_macro = [](smart_holder& hld) { auto condense_for_macro = [](smart_holder &hld) {
hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>(); hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>();
}; };
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(condense_for_macro(hld),
condense_for_macro(hld), "Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
"Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
} }
TEST_CASE("from_raw_ptr_unowned+as_shared_ptr", "[S]") { TEST_CASE("from_raw_ptr_unowned+as_shared_ptr", "[S]") {
static int value = 19; static int value = 19;
auto hld = smart_holder::from_raw_ptr_unowned(&value); auto hld = smart_holder::from_raw_ptr_unowned(&value);
REQUIRE(*hld.as_shared_ptr<int>() == 19); REQUIRE(*hld.as_shared_ptr<int>() == 19);
} }
TEST_CASE("from_raw_ptr_take_ownership+lvalue_ref", "[S]") { TEST_CASE("from_raw_ptr_take_ownership+lvalue_ref", "[S]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
REQUIRE(hld.has_pointee()); REQUIRE(hld.has_pointee());
REQUIRE(hld.lvalue_ref<int>() == 19); REQUIRE(hld.lvalue_ref<int>() == 19);
} }
TEST_CASE("from_raw_ptr_take_ownership+as_raw_ptr_release_ownership1", "[S]") { TEST_CASE("from_raw_ptr_take_ownership+as_raw_ptr_release_ownership1", "[S]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
auto new_owner = auto new_owner = std::unique_ptr<int>(hld.as_raw_ptr_release_ownership<int>());
std::unique_ptr<int>(hld.as_raw_ptr_release_ownership<int>()); REQUIRE(!hld.has_pointee());
REQUIRE(!hld.has_pointee()); REQUIRE(*new_owner == 19);
REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_raw_ptr_take_ownership+as_raw_ptr_release_ownership2", "[E]") { TEST_CASE("from_raw_ptr_take_ownership+as_raw_ptr_release_ownership2", "[E]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
auto shd_ptr = hld.as_shared_ptr<int>(); auto shd_ptr = hld.as_shared_ptr<int>();
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(hld.as_raw_ptr_release_ownership<int>(),
hld.as_raw_ptr_release_ownership<int>(), "Cannot disown use_count != 1 (as_raw_ptr_release_ownership).");
"Cannot disown use_count != 1 (as_raw_ptr_release_ownership).");
} }
TEST_CASE("from_raw_ptr_take_ownership+as_unique_ptr1", "[S]") { TEST_CASE("from_raw_ptr_take_ownership+as_unique_ptr1", "[S]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
std::unique_ptr<int> new_owner = hld.as_unique_ptr<int>(); std::unique_ptr<int> new_owner = hld.as_unique_ptr<int>();
REQUIRE(!hld.has_pointee()); REQUIRE(!hld.has_pointee());
REQUIRE(*new_owner == 19); REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_raw_ptr_take_ownership+as_unique_ptr2", "[E]") { TEST_CASE("from_raw_ptr_take_ownership+as_unique_ptr2", "[E]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
auto shd_ptr = hld.as_shared_ptr<int>(); auto shd_ptr = hld.as_shared_ptr<int>();
REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), "Cannot disown use_count != 1 (as_unique_ptr).");
"Cannot disown use_count != 1 (as_unique_ptr).");
} }
TEST_CASE("from_raw_ptr_take_ownership+as_unique_ptr_with_deleter", "[E]") { TEST_CASE("from_raw_ptr_take_ownership+as_unique_ptr_with_deleter", "[E]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
auto condense_for_macro = [](smart_holder& hld) { auto condense_for_macro = [](smart_holder &hld) {
hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>(); hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>();
}; };
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(condense_for_macro(hld),
condense_for_macro(hld), "Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
"Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
} }
TEST_CASE("from_raw_ptr_take_ownership+as_shared_ptr", "[S]") { TEST_CASE("from_raw_ptr_take_ownership+as_shared_ptr", "[S]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
std::shared_ptr<int> new_owner = hld.as_shared_ptr<int>(); std::shared_ptr<int> new_owner = hld.as_shared_ptr<int>();
REQUIRE(hld.has_pointee()); REQUIRE(hld.has_pointee());
REQUIRE(*new_owner == 19); REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_unique_ptr+lvalue_ref", "[S]") { TEST_CASE("from_unique_ptr+lvalue_ref", "[S]") {
std::unique_ptr<int> orig_owner(new int(19)); std::unique_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_unique_ptr(std::move(orig_owner)); auto hld = smart_holder::from_unique_ptr(std::move(orig_owner));
REQUIRE(orig_owner.get() == nullptr); REQUIRE(orig_owner.get() == nullptr);
REQUIRE(hld.lvalue_ref<int>() == 19); REQUIRE(hld.lvalue_ref<int>() == 19);
} }
TEST_CASE("from_unique_ptr+as_raw_ptr_release_ownership1", "[S]") { TEST_CASE("from_unique_ptr+as_raw_ptr_release_ownership1", "[S]") {
std::unique_ptr<int> orig_owner(new int(19)); std::unique_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_unique_ptr(std::move(orig_owner)); auto hld = smart_holder::from_unique_ptr(std::move(orig_owner));
REQUIRE(orig_owner.get() == nullptr); REQUIRE(orig_owner.get() == nullptr);
auto new_owner = auto new_owner = std::unique_ptr<int>(hld.as_raw_ptr_release_ownership<int>());
std::unique_ptr<int>(hld.as_raw_ptr_release_ownership<int>()); REQUIRE(!hld.has_pointee());
REQUIRE(!hld.has_pointee()); REQUIRE(*new_owner == 19);
REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_unique_ptr+as_raw_ptr_release_ownership2", "[E]") { TEST_CASE("from_unique_ptr+as_raw_ptr_release_ownership2", "[E]") {
std::unique_ptr<int> orig_owner(new int(19)); std::unique_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_unique_ptr(std::move(orig_owner)); auto hld = smart_holder::from_unique_ptr(std::move(orig_owner));
REQUIRE(orig_owner.get() == nullptr); REQUIRE(orig_owner.get() == nullptr);
auto shd_ptr = hld.as_shared_ptr<int>(); auto shd_ptr = hld.as_shared_ptr<int>();
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(hld.as_raw_ptr_release_ownership<int>(),
hld.as_raw_ptr_release_ownership<int>(), "Cannot disown use_count != 1 (as_raw_ptr_release_ownership).");
"Cannot disown use_count != 1 (as_raw_ptr_release_ownership).");
} }
TEST_CASE("from_unique_ptr+as_unique_ptr1", "[S]") { TEST_CASE("from_unique_ptr+as_unique_ptr1", "[S]") {
std::unique_ptr<int> orig_owner(new int(19)); std::unique_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_unique_ptr(std::move(orig_owner)); auto hld = smart_holder::from_unique_ptr(std::move(orig_owner));
REQUIRE(orig_owner.get() == nullptr); REQUIRE(orig_owner.get() == nullptr);
std::unique_ptr<int> new_owner = hld.as_unique_ptr<int>(); std::unique_ptr<int> new_owner = hld.as_unique_ptr<int>();
REQUIRE(!hld.has_pointee()); REQUIRE(!hld.has_pointee());
REQUIRE(*new_owner == 19); REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_unique_ptr+as_unique_ptr2", "[E]") { TEST_CASE("from_unique_ptr+as_unique_ptr2", "[E]") {
std::unique_ptr<int> orig_owner(new int(19)); std::unique_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_unique_ptr(std::move(orig_owner)); auto hld = smart_holder::from_unique_ptr(std::move(orig_owner));
REQUIRE(orig_owner.get() == nullptr); REQUIRE(orig_owner.get() == nullptr);
auto shd_ptr = hld.as_shared_ptr<int>(); auto shd_ptr = hld.as_shared_ptr<int>();
REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), "Cannot disown use_count != 1 (as_unique_ptr).");
"Cannot disown use_count != 1 (as_unique_ptr).");
} }
TEST_CASE("from_unique_ptr+as_unique_ptr_with_deleter", "[E]") { TEST_CASE("from_unique_ptr+as_unique_ptr_with_deleter", "[E]") {
std::unique_ptr<int> orig_owner(new int(19)); std::unique_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_unique_ptr(std::move(orig_owner)); auto hld = smart_holder::from_unique_ptr(std::move(orig_owner));
REQUIRE(orig_owner.get() == nullptr); REQUIRE(orig_owner.get() == nullptr);
auto condense_for_macro = [](smart_holder& hld) { auto condense_for_macro = [](smart_holder &hld) {
hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>(); hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>();
}; };
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(condense_for_macro(hld),
condense_for_macro(hld), "Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
"Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
} }
TEST_CASE("from_unique_ptr+as_shared_ptr", "[S]") { TEST_CASE("from_unique_ptr+as_shared_ptr", "[S]") {
std::unique_ptr<int> orig_owner(new int(19)); std::unique_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_unique_ptr(std::move(orig_owner)); auto hld = smart_holder::from_unique_ptr(std::move(orig_owner));
REQUIRE(orig_owner.get() == nullptr); REQUIRE(orig_owner.get() == nullptr);
std::shared_ptr<int> new_owner = hld.as_shared_ptr<int>(); std::shared_ptr<int> new_owner = hld.as_shared_ptr<int>();
REQUIRE(hld.has_pointee()); REQUIRE(hld.has_pointee());
REQUIRE(*new_owner == 19); REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_unique_ptr_with_deleter+lvalue_ref", "[S]") { TEST_CASE("from_unique_ptr_with_deleter+lvalue_ref", "[S]") {
std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner( std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner(new int(19));
new int(19)); auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner));
auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner)); REQUIRE(orig_owner.get() == nullptr);
REQUIRE(orig_owner.get() == nullptr); REQUIRE(hld.lvalue_ref<int>() == 19);
REQUIRE(hld.lvalue_ref<int>() == 19);
} }
TEST_CASE("from_unique_ptr_with_deleter+as_raw_ptr_release_ownership", "[E]") { TEST_CASE("from_unique_ptr_with_deleter+as_raw_ptr_release_ownership", "[E]") {
std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner( std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner(new int(19));
new int(19)); auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner));
auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner)); REQUIRE(orig_owner.get() == nullptr);
REQUIRE(orig_owner.get() == nullptr); REQUIRE_THROWS_WITH(hld.as_raw_ptr_release_ownership<int>(),
REQUIRE_THROWS_WITH( "Cannot disown custom deleter (as_raw_ptr_release_ownership).");
hld.as_raw_ptr_release_ownership<int>(),
"Cannot disown custom deleter (as_raw_ptr_release_ownership).");
} }
TEST_CASE("from_unique_ptr_with_deleter+as_unique_ptr", "[E]") { TEST_CASE("from_unique_ptr_with_deleter+as_unique_ptr", "[E]") {
std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner( std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner(new int(19));
new int(19)); auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner));
auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner)); REQUIRE(orig_owner.get() == nullptr);
REQUIRE(orig_owner.get() == nullptr); REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), "Cannot disown custom deleter (as_unique_ptr).");
REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(),
"Cannot disown custom deleter (as_unique_ptr).");
} }
TEST_CASE("from_unique_ptr_with_deleter+as_unique_ptr_with_deleter1", "[S]") { TEST_CASE("from_unique_ptr_with_deleter+as_unique_ptr_with_deleter1", "[S]") {
std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner( std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner(new int(19));
new int(19)); auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner));
auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner)); REQUIRE(orig_owner.get() == nullptr);
REQUIRE(orig_owner.get() == nullptr); std::unique_ptr<int, helpers::functor_builtin_delete<int>> new_owner
std::unique_ptr<int, helpers::functor_builtin_delete<int>> new_owner = = hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>();
hld.as_unique_ptr_with_deleter<int, REQUIRE(!hld.has_pointee());
helpers::functor_builtin_delete<int>>(); REQUIRE(*new_owner == 19);
REQUIRE(!hld.has_pointee());
REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_unique_ptr_with_deleter+as_unique_ptr_with_deleter2", "[E]") { TEST_CASE("from_unique_ptr_with_deleter+as_unique_ptr_with_deleter2", "[E]") {
std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner( std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner(new int(19));
new int(19)); auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner));
auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner)); REQUIRE(orig_owner.get() == nullptr);
REQUIRE(orig_owner.get() == nullptr); auto condense_for_macro = [](smart_holder &hld) {
auto condense_for_macro = [](smart_holder& hld) { hld.as_unique_ptr_with_deleter<int, helpers::functor_other_delete<int>>();
hld.as_unique_ptr_with_deleter<int, helpers::functor_other_delete<int>>(); };
}; REQUIRE_THROWS_WITH(condense_for_macro(hld),
REQUIRE_THROWS_WITH( "Incompatible unique_ptr deleter (as_unique_ptr_with_deleter).");
condense_for_macro(hld),
"Incompatible unique_ptr deleter (as_unique_ptr_with_deleter).");
} }
TEST_CASE("from_unique_ptr_with_deleter+as_shared_ptr", "[S]") { TEST_CASE("from_unique_ptr_with_deleter+as_shared_ptr", "[S]") {
std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner( std::unique_ptr<int, helpers::functor_builtin_delete<int>> orig_owner(new int(19));
new int(19)); auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner));
auto hld = smart_holder::from_unique_ptr_with_deleter(std::move(orig_owner)); REQUIRE(orig_owner.get() == nullptr);
REQUIRE(orig_owner.get() == nullptr); std::shared_ptr<int> new_owner = hld.as_shared_ptr<int>();
std::shared_ptr<int> new_owner = hld.as_shared_ptr<int>(); REQUIRE(hld.has_pointee());
REQUIRE(hld.has_pointee()); REQUIRE(*new_owner == 19);
REQUIRE(*new_owner == 19);
} }
TEST_CASE("from_shared_ptr+lvalue_ref", "[S]") { TEST_CASE("from_shared_ptr+lvalue_ref", "[S]") {
std::shared_ptr<int> orig_owner(new int(19)); std::shared_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_shared_ptr(orig_owner); auto hld = smart_holder::from_shared_ptr(orig_owner);
REQUIRE(hld.lvalue_ref<int>() == 19); REQUIRE(hld.lvalue_ref<int>() == 19);
} }
TEST_CASE("from_shared_ptr+as_raw_ptr_release_ownership", "[E]") { TEST_CASE("from_shared_ptr+as_raw_ptr_release_ownership", "[E]") {
std::shared_ptr<int> orig_owner(new int(19)); std::shared_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_shared_ptr(orig_owner); auto hld = smart_holder::from_shared_ptr(orig_owner);
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(hld.as_raw_ptr_release_ownership<int>(),
hld.as_raw_ptr_release_ownership<int>(), "Cannot disown external shared_ptr (as_raw_ptr_release_ownership).");
"Cannot disown external shared_ptr (as_raw_ptr_release_ownership).");
} }
TEST_CASE("from_shared_ptr+as_unique_ptr", "[E]") { TEST_CASE("from_shared_ptr+as_unique_ptr", "[E]") {
std::shared_ptr<int> orig_owner(new int(19)); std::shared_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_shared_ptr(orig_owner); auto hld = smart_holder::from_shared_ptr(orig_owner);
REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(),
"Cannot disown external shared_ptr (as_unique_ptr)."); "Cannot disown external shared_ptr (as_unique_ptr).");
} }
TEST_CASE("from_shared_ptr+as_unique_ptr_with_deleter", "[E]") { TEST_CASE("from_shared_ptr+as_unique_ptr_with_deleter", "[E]") {
std::shared_ptr<int> orig_owner(new int(19)); std::shared_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_shared_ptr(orig_owner); auto hld = smart_holder::from_shared_ptr(orig_owner);
auto condense_for_macro = [](smart_holder& hld) { auto condense_for_macro = [](smart_holder &hld) {
hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>(); hld.as_unique_ptr_with_deleter<int, helpers::functor_builtin_delete<int>>();
}; };
REQUIRE_THROWS_WITH( REQUIRE_THROWS_WITH(condense_for_macro(hld),
condense_for_macro(hld), "Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
"Missing unique_ptr deleter (as_unique_ptr_with_deleter).");
} }
TEST_CASE("from_shared_ptr+as_shared_ptr", "[S]") { TEST_CASE("from_shared_ptr+as_shared_ptr", "[S]") {
std::shared_ptr<int> orig_owner(new int(19)); std::shared_ptr<int> orig_owner(new int(19));
auto hld = smart_holder::from_shared_ptr(orig_owner); auto hld = smart_holder::from_shared_ptr(orig_owner);
REQUIRE(*hld.as_shared_ptr<int>() == 19); REQUIRE(*hld.as_shared_ptr<int>() == 19);
} }
TEST_CASE("error_unpopulated_holder", "[E]") { TEST_CASE("error_unpopulated_holder", "[E]") {
smart_holder hld; smart_holder hld;
REQUIRE_THROWS_WITH(hld.as_raw_ptr_unowned<int>(), REQUIRE_THROWS_WITH(hld.as_raw_ptr_unowned<int>(), "Unpopulated holder (as_raw_ptr_unowned).");
"Unpopulated holder (as_raw_ptr_unowned).");
} }
TEST_CASE("error_incompatible_type", "[E]") { TEST_CASE("error_incompatible_type", "[E]") {
static int value = 19; static int value = 19;
auto hld = smart_holder::from_raw_ptr_unowned(&value); auto hld = smart_holder::from_raw_ptr_unowned(&value);
REQUIRE_THROWS_WITH(hld.as_unique_ptr<std::string>(), REQUIRE_THROWS_WITH(hld.as_unique_ptr<std::string>(), "Incompatible type (as_unique_ptr).");
"Incompatible type (as_unique_ptr).");
} }
TEST_CASE("error_disowned_holder", "[E]") { TEST_CASE("error_disowned_holder", "[E]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
hld.as_unique_ptr<int>(); hld.as_unique_ptr<int>();
REQUIRE_THROWS_WITH(hld.lvalue_ref<int>(), "Disowned holder (lvalue_ref)."); REQUIRE_THROWS_WITH(hld.lvalue_ref<int>(), "Disowned holder (lvalue_ref).");
} }
TEST_CASE("error_cannot_disown_nullptr", "[E]") { TEST_CASE("error_cannot_disown_nullptr", "[E]") {
auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19)); auto hld = smart_holder::from_raw_ptr_take_ownership(new int(19));
hld.as_unique_ptr<int>(); hld.as_unique_ptr<int>();
REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), REQUIRE_THROWS_WITH(hld.as_unique_ptr<int>(), "Cannot disown nullptr (as_unique_ptr).");
"Cannot disown nullptr (as_unique_ptr).");
} }