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Hardcopy of pybind11 instead of using git submodules (#552)
* removed pybind as submodule * added hardcopy of pybind11 2.10.0 * rename pybind11 folder to avoid conflicts when changing branch Co-authored-by: Dhanya Thattil <dhanya.thattil@psi.ch>
This commit is contained in:
Erik Fröjdh
295
libs/pybind/tests/test_copy_move.cpp
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295
libs/pybind/tests/test_copy_move.cpp
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/*
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tests/test_copy_move_policies.cpp -- 'copy' and 'move' return value policies
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and related tests
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Copyright (c) 2016 Ben North <ben@redfrontdoor.org>
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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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*/
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#include <pybind11/stl.h>
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#include "constructor_stats.h"
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#include "pybind11_tests.h"
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template <typename derived>
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struct empty {
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static const derived &get_one() { return instance_; }
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static derived instance_;
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};
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struct lacking_copy_ctor : public empty<lacking_copy_ctor> {
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lacking_copy_ctor() = default;
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lacking_copy_ctor(const lacking_copy_ctor &other) = delete;
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};
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template <>
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lacking_copy_ctor empty<lacking_copy_ctor>::instance_ = {};
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struct lacking_move_ctor : public empty<lacking_move_ctor> {
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lacking_move_ctor() = default;
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lacking_move_ctor(const lacking_move_ctor &other) = delete;
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lacking_move_ctor(lacking_move_ctor &&other) = delete;
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};
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template <>
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lacking_move_ctor empty<lacking_move_ctor>::instance_ = {};
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/* Custom type caster move/copy test classes */
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class MoveOnlyInt {
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public:
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MoveOnlyInt() { print_default_created(this); }
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explicit MoveOnlyInt(int v) : value{v} { print_created(this, value); }
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MoveOnlyInt(MoveOnlyInt &&m) noexcept {
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print_move_created(this, m.value);
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std::swap(value, m.value);
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}
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MoveOnlyInt &operator=(MoveOnlyInt &&m) noexcept {
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print_move_assigned(this, m.value);
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std::swap(value, m.value);
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return *this;
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}
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MoveOnlyInt(const MoveOnlyInt &) = delete;
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MoveOnlyInt &operator=(const MoveOnlyInt &) = delete;
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~MoveOnlyInt() { print_destroyed(this); }
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int value;
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};
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class MoveOrCopyInt {
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public:
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MoveOrCopyInt() { print_default_created(this); }
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explicit MoveOrCopyInt(int v) : value{v} { print_created(this, value); }
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MoveOrCopyInt(MoveOrCopyInt &&m) noexcept {
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print_move_created(this, m.value);
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std::swap(value, m.value);
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}
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MoveOrCopyInt &operator=(MoveOrCopyInt &&m) noexcept {
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print_move_assigned(this, m.value);
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std::swap(value, m.value);
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return *this;
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}
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MoveOrCopyInt(const MoveOrCopyInt &c) {
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print_copy_created(this, c.value);
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// NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer)
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value = c.value;
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}
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MoveOrCopyInt &operator=(const MoveOrCopyInt &c) {
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print_copy_assigned(this, c.value);
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value = c.value;
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return *this;
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}
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~MoveOrCopyInt() { print_destroyed(this); }
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int value;
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};
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class CopyOnlyInt {
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public:
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CopyOnlyInt() { print_default_created(this); }
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explicit CopyOnlyInt(int v) : value{v} { print_created(this, value); }
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CopyOnlyInt(const CopyOnlyInt &c) {
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print_copy_created(this, c.value);
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// NOLINTNEXTLINE(cppcoreguidelines-prefer-member-initializer)
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value = c.value;
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}
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CopyOnlyInt &operator=(const CopyOnlyInt &c) {
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print_copy_assigned(this, c.value);
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value = c.value;
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return *this;
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}
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~CopyOnlyInt() { print_destroyed(this); }
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int value;
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};
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PYBIND11_NAMESPACE_BEGIN(pybind11)
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PYBIND11_NAMESPACE_BEGIN(detail)
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template <>
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struct type_caster<MoveOnlyInt> {
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PYBIND11_TYPE_CASTER(MoveOnlyInt, const_name("MoveOnlyInt"));
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bool load(handle src, bool) {
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value = MoveOnlyInt(src.cast<int>());
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return true;
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}
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static handle cast(const MoveOnlyInt &m, return_value_policy r, handle p) {
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return pybind11::cast(m.value, r, p);
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}
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};
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template <>
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struct type_caster<MoveOrCopyInt> {
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PYBIND11_TYPE_CASTER(MoveOrCopyInt, const_name("MoveOrCopyInt"));
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bool load(handle src, bool) {
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value = MoveOrCopyInt(src.cast<int>());
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return true;
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}
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static handle cast(const MoveOrCopyInt &m, return_value_policy r, handle p) {
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return pybind11::cast(m.value, r, p);
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}
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};
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template <>
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struct type_caster<CopyOnlyInt> {
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protected:
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CopyOnlyInt value;
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public:
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static constexpr auto name = const_name("CopyOnlyInt");
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bool load(handle src, bool) {
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value = CopyOnlyInt(src.cast<int>());
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return true;
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}
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static handle cast(const CopyOnlyInt &m, return_value_policy r, handle p) {
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return pybind11::cast(m.value, r, p);
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}
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static handle cast(const CopyOnlyInt *src, return_value_policy policy, handle parent) {
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if (!src) {
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return none().release();
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}
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return cast(*src, policy, parent);
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}
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explicit operator CopyOnlyInt *() { return &value; }
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explicit operator CopyOnlyInt &() { return value; }
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template <typename T>
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using cast_op_type = pybind11::detail::cast_op_type<T>;
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};
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PYBIND11_NAMESPACE_END(detail)
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PYBIND11_NAMESPACE_END(pybind11)
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TEST_SUBMODULE(copy_move_policies, m) {
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// test_lacking_copy_ctor
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py::class_<lacking_copy_ctor>(m, "lacking_copy_ctor")
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.def_static("get_one", &lacking_copy_ctor::get_one, py::return_value_policy::copy);
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// test_lacking_move_ctor
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py::class_<lacking_move_ctor>(m, "lacking_move_ctor")
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.def_static("get_one", &lacking_move_ctor::get_one, py::return_value_policy::move);
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// test_move_and_copy_casts
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// NOLINTNEXTLINE(performance-unnecessary-value-param)
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m.def("move_and_copy_casts", [](const py::object &o) {
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int r = 0;
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r += py::cast<MoveOrCopyInt>(o).value; /* moves */
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r += py::cast<MoveOnlyInt>(o).value; /* moves */
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r += py::cast<CopyOnlyInt>(o).value; /* copies */
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auto m1(py::cast<MoveOrCopyInt>(o)); /* moves */
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auto m2(py::cast<MoveOnlyInt>(o)); /* moves */
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auto m3(py::cast<CopyOnlyInt>(o)); /* copies */
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r += m1.value + m2.value + m3.value;
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return r;
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});
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// test_move_and_copy_loads
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m.def("move_only", [](MoveOnlyInt m) { return m.value; });
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// Changing this breaks the existing test: needs careful review.
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// NOLINTNEXTLINE(performance-unnecessary-value-param)
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m.def("move_or_copy", [](MoveOrCopyInt m) { return m.value; });
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// Changing this breaks the existing test: needs careful review.
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// NOLINTNEXTLINE(performance-unnecessary-value-param)
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m.def("copy_only", [](CopyOnlyInt m) { return m.value; });
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m.def("move_pair",
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[](std::pair<MoveOnlyInt, MoveOrCopyInt> p) { return p.first.value + p.second.value; });
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m.def("move_tuple", [](std::tuple<MoveOnlyInt, MoveOrCopyInt, MoveOnlyInt> t) {
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return std::get<0>(t).value + std::get<1>(t).value + std::get<2>(t).value;
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});
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m.def("copy_tuple", [](std::tuple<CopyOnlyInt, CopyOnlyInt> t) {
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return std::get<0>(t).value + std::get<1>(t).value;
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});
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m.def("move_copy_nested",
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[](std::pair<MoveOnlyInt,
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std::pair<std::tuple<MoveOrCopyInt, CopyOnlyInt, std::tuple<MoveOnlyInt>>,
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MoveOrCopyInt>> x) {
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return x.first.value + std::get<0>(x.second.first).value
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+ std::get<1>(x.second.first).value
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+ std::get<0>(std::get<2>(x.second.first)).value + x.second.second.value;
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});
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m.def("move_and_copy_cstats", []() {
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ConstructorStats::gc();
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// Reset counts to 0 so that previous tests don't affect later ones:
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auto &mc = ConstructorStats::get<MoveOrCopyInt>();
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mc.move_assignments = mc.move_constructions = mc.copy_assignments = mc.copy_constructions
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= 0;
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auto &mo = ConstructorStats::get<MoveOnlyInt>();
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mo.move_assignments = mo.move_constructions = mo.copy_assignments = mo.copy_constructions
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= 0;
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auto &co = ConstructorStats::get<CopyOnlyInt>();
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co.move_assignments = co.move_constructions = co.copy_assignments = co.copy_constructions
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= 0;
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py::dict d;
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d["MoveOrCopyInt"] = py::cast(mc, py::return_value_policy::reference);
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d["MoveOnlyInt"] = py::cast(mo, py::return_value_policy::reference);
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d["CopyOnlyInt"] = py::cast(co, py::return_value_policy::reference);
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return d;
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});
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#ifdef PYBIND11_HAS_OPTIONAL
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// test_move_and_copy_load_optional
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m.attr("has_optional") = true;
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m.def("move_optional", [](std::optional<MoveOnlyInt> o) { return o->value; });
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m.def("move_or_copy_optional", [](std::optional<MoveOrCopyInt> o) { return o->value; });
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m.def("copy_optional", [](std::optional<CopyOnlyInt> o) { return o->value; });
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m.def("move_optional_tuple",
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[](std::optional<std::tuple<MoveOrCopyInt, MoveOnlyInt, CopyOnlyInt>> x) {
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return std::get<0>(*x).value + std::get<1>(*x).value + std::get<2>(*x).value;
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});
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#else
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m.attr("has_optional") = false;
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#endif
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// #70 compilation issue if operator new is not public - simple body added
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// but not needed on most compilers; MSVC and nvcc don't like a local
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// struct not having a method defined when declared, since it can not be
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// added later.
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struct PrivateOpNew {
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int value = 1;
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private:
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void *operator new(size_t bytes) {
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void *ptr = std::malloc(bytes);
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if (ptr) {
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return ptr;
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}
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throw std::bad_alloc{};
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}
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};
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py::class_<PrivateOpNew>(m, "PrivateOpNew").def_readonly("value", &PrivateOpNew::value);
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m.def("private_op_new_value", []() { return PrivateOpNew(); });
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m.def(
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"private_op_new_reference",
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[]() -> const PrivateOpNew & {
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static PrivateOpNew x{};
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return x;
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},
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py::return_value_policy::reference);
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// test_move_fallback
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// #389: rvp::move should fall-through to copy on non-movable objects
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struct MoveIssue1 {
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int v;
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explicit MoveIssue1(int v) : v{v} {}
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MoveIssue1(const MoveIssue1 &c) = default;
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MoveIssue1(MoveIssue1 &&) = delete;
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};
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py::class_<MoveIssue1>(m, "MoveIssue1")
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.def(py::init<int>())
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.def_readwrite("value", &MoveIssue1::v);
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struct MoveIssue2 {
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int v;
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explicit MoveIssue2(int v) : v{v} {}
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MoveIssue2(MoveIssue2 &&) = default;
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};
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py::class_<MoveIssue2>(m, "MoveIssue2")
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.def(py::init<int>())
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.def_readwrite("value", &MoveIssue2::v);
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// #2742: Don't expect ownership of raw pointer to `new`ed object to be transferred with
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// `py::return_value_policy::move`
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m.def(
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"get_moveissue1",
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[](int i) { return std::unique_ptr<MoveIssue1>(new MoveIssue1(i)); },
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py::return_value_policy::move);
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m.def(
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"get_moveissue2", [](int i) { return MoveIssue2(i); }, py::return_value_policy::move);
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// Make sure that cast from pytype rvalue to other pytype works
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m.def("get_pytype_rvalue_castissue", [](double i) { return py::float_(i).cast<py::int_>(); });
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}
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