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fix: better exception and error handling for capsules (#3825) 

* Make capsule errors better match python
This commit is contained in:
Aaron Gokaslan 2022-03-25 10:55:13 -04:00 committed by GitHub
parent 47079b9e7b
commit 146695a904
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 21 additions and 14 deletions
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3
include/pybind11/numpy.h
View File

@ -1288,7 +1288,8 @@ public:
static pybind11::dtype dtype() {
list shape;
array_info<T>::append_extents(shape);
return pybind11::dtype::from_args(pybind11::make_tuple(base_descr::dtype(), shape));
return pybind11::dtype::from_args(
pybind11::make_tuple(base_descr::dtype(), std::move(shape)));
}
};

32
include/pybind11/pytypes.h
View File

@ -1574,7 +1574,7 @@ public:
void (*destructor)(PyObject *) = nullptr)
: object(PyCapsule_New(const_cast<void *>(value), name, destructor), stolen_t{}) {
if (!m_ptr) {
pybind11_fail("Could not allocate capsule object!");
throw error_already_set();
}
}
@ -1582,34 +1582,42 @@ public:
capsule(const void *value, void (*destruct)(PyObject *))
: object(PyCapsule_New(const_cast<void *>(value), nullptr, destruct), stolen_t{}) {
if (!m_ptr) {
pybind11_fail("Could not allocate capsule object!");
throw error_already_set();
}
}
capsule(const void *value, void (*destructor)(void *)) {
m_ptr = PyCapsule_New(const_cast<void *>(value), nullptr, [](PyObject *o) {
auto destructor = reinterpret_cast<void (*)(void *)>(PyCapsule_GetContext(o));
if (destructor == nullptr) {
if (PyErr_Occurred()) {
throw error_already_set();
}
pybind11_fail("Unable to get capsule context");
}
void *ptr = PyCapsule_GetPointer(o, nullptr);
if (ptr == nullptr) {
throw error_already_set();
}
destructor(ptr);
});
if (!m_ptr) {
pybind11_fail("Could not allocate capsule object!");
}
if (PyCapsule_SetContext(m_ptr, (void *) destructor) != 0) {
pybind11_fail("Could not set capsule context!");
if (!m_ptr || PyCapsule_SetContext(m_ptr, (void *) destructor) != 0) {
throw error_already_set();
}
}
explicit capsule(void (*destructor)()) {
m_ptr = PyCapsule_New(reinterpret_cast<void *>(destructor), nullptr, [](PyObject *o) {
auto destructor = reinterpret_cast<void (*)()>(PyCapsule_GetPointer(o, nullptr));
if (destructor == nullptr) {
throw error_already_set();
}
destructor();
});
if (!m_ptr) {
pybind11_fail("Could not allocate capsule object!");
throw error_already_set();
}
}
@ -1624,8 +1632,7 @@ public:
const auto *name = this->name();
T *result = static_cast<T *>(PyCapsule_GetPointer(m_ptr, name));
if (!result) {
PyErr_Clear();
pybind11_fail("Unable to extract capsule contents!");
throw error_already_set();
}
return result;
}
@ -1633,8 +1640,7 @@ public:
/// Replaces a capsule's pointer *without* calling the destructor on the existing one.
void set_pointer(const void *value) {
if (PyCapsule_SetPointer(m_ptr, const_cast<void *>(value)) != 0) {
PyErr_Clear();
pybind11_fail("Could not set capsule pointer");
throw error_already_set();
}
}