1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// Copyright (c) 2020-2024 The Pybind Development Team.
// All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#pragma once
#include "pybind11/detail/struct_smart_holder.h"
PYBIND11_NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
PYBIND11_NAMESPACE_BEGIN(memory)
PYBIND11_NAMESPACE_BEGIN(smart_holder_poc) // Proof-of-Concept implementations.
// NOLINTNEXTLINE(bugprone-incorrect-enable-shared-from-this)
struct PrivateESFT : private std::enable_shared_from_this<PrivateESFT> {};
static_assert(!type_has_shared_from_this(static_cast<PrivateESFT *>(nullptr)),
"should detect inaccessible base");
template <typename T>
T &as_lvalue_ref(const smart_holder &hld) {
static const char *context = "as_lvalue_ref";
hld.ensure_is_populated(context);
hld.ensure_has_pointee(context);
return *hld.as_raw_ptr_unowned<T>();
}
template <typename T>
T &&as_rvalue_ref(const smart_holder &hld) {
static const char *context = "as_rvalue_ref";
hld.ensure_is_populated(context);
hld.ensure_has_pointee(context);
return std::move(*hld.as_raw_ptr_unowned<T>());
}
template <typename T>
T *as_raw_ptr_release_ownership(smart_holder &hld,
const char *context = "as_raw_ptr_release_ownership") {
hld.ensure_can_release_ownership(context);
T *raw_ptr = hld.as_raw_ptr_unowned<T>();
hld.release_ownership(get_guarded_delete);
return raw_ptr;
}
template <typename T, typename D = std::default_delete<T>>
std::unique_ptr<T, D> as_unique_ptr(smart_holder &hld) {
static const char *context = "as_unique_ptr";
hld.ensure_compatible_uqp_del<T, D>(context);
hld.ensure_use_count_1(context);
T *raw_ptr = hld.as_raw_ptr_unowned<T>();
hld.release_ownership(get_guarded_delete);
// KNOWN DEFECT (see PR #4850): Does not copy the deleter.
return std::unique_ptr<T, D>(raw_ptr);
}
PYBIND11_NAMESPACE_END(smart_holder_poc)
PYBIND11_NAMESPACE_END(memory)
PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
|
