52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
// Copyright (c) 2020-2024 The Pybind Development Team.
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// All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#pragma once
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#include "pybind11/detail/struct_smart_holder.h"
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namespace pybindit {
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namespace memory {
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namespace smart_holder_poc { // Proof-of-Concept implementations.
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template <typename T>
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T &as_lvalue_ref(const smart_holder &hld) {
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static const char *context = "as_lvalue_ref";
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hld.ensure_is_populated(context);
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hld.ensure_has_pointee(context);
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return *hld.as_raw_ptr_unowned<T>();
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}
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template <typename T>
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T &&as_rvalue_ref(const smart_holder &hld) {
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static const char *context = "as_rvalue_ref";
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hld.ensure_is_populated(context);
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hld.ensure_has_pointee(context);
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return std::move(*hld.as_raw_ptr_unowned<T>());
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}
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template <typename T>
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T *as_raw_ptr_release_ownership(smart_holder &hld,
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const char *context = "as_raw_ptr_release_ownership") {
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hld.ensure_can_release_ownership(context);
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T *raw_ptr = hld.as_raw_ptr_unowned<T>();
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hld.release_ownership();
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return raw_ptr;
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}
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template <typename T, typename D = std::default_delete<T>>
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std::unique_ptr<T, D> as_unique_ptr(smart_holder &hld) {
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static const char *context = "as_unique_ptr";
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hld.ensure_compatible_rtti_uqp_del<T, D>(context);
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hld.ensure_use_count_1(context);
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T *raw_ptr = hld.as_raw_ptr_unowned<T>();
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hld.release_ownership();
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// KNOWN DEFECT (see PR #4850): Does not copy the deleter.
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return std::unique_ptr<T, D>(raw_ptr);
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}
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} // namespace smart_holder_poc
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} // namespace memory
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} // namespace pybindit
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