mirror of
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391c75447d
This udpates all the remaining tests to the new test suite code and comment styles started in #898. For the most part, the test coverage here is unchanged, with a few minor exceptions as noted below. - test_constants_and_functions: this adds more overload tests with overloads with different number of arguments for more comprehensive overload_cast testing. The test style conversion broke the overload tests under MSVC 2015, prompting the additional tests while looking for a workaround. - test_eigen: this dropped the unused functions `get_cm_corners` and `get_cm_corners_const`--these same tests were duplicates of the same things provided (and used) via ReturnTester methods. - test_opaque_types: this test had a hidden dependence on ExampleMandA which is now fixed by using the global UserType which suffices for the relevant test. - test_methods_and_attributes: this required some additions to UserType to make it usable as a replacement for the test's previous SimpleType: UserType gained a value mutator, and the `value` property is not mutable (it was previously readonly). Some overload tests were also added to better test overload_cast (as described above). - test_numpy_array: removed the untemplated mutate_data/mutate_data_t: the templated versions with an empty parameter pack expand to the same thing. - test_stl: this was already mostly in the new style; this just tweaks things a bit, localizing a class, and adding some missing `// test_whatever` comments. - test_virtual_functions: like `test_stl`, this was mostly in the new test style already, but needed some `// test_whatever` comments. This commit also moves the inherited virtual example code to the end of the file, after the main set of tests (since it is less important than the other tests, and rather length); it also got renamed to `test_inherited_virtuals` (from `test_inheriting_repeat`) because it tests both inherited virtual approaches, not just the repeat approach.
447 lines
22 KiB
C++
447 lines
22 KiB
C++
/*
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tests/test_methods_and_attributes.cpp -- constructors, deconstructors, attribute access,
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__str__, argument and return value conventions
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Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
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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_tests.h"
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#include "constructor_stats.h"
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class ExampleMandA {
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public:
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ExampleMandA() { print_default_created(this); }
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ExampleMandA(int value) : value(value) { print_created(this, value); }
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ExampleMandA(const ExampleMandA &e) : value(e.value) { print_copy_created(this); }
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ExampleMandA(ExampleMandA &&e) : value(e.value) { print_move_created(this); }
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~ExampleMandA() { print_destroyed(this); }
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std::string toString() {
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return "ExampleMandA[value=" + std::to_string(value) + "]";
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}
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void operator=(const ExampleMandA &e) { print_copy_assigned(this); value = e.value; }
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void operator=(ExampleMandA &&e) { print_move_assigned(this); value = e.value; }
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void add1(ExampleMandA other) { value += other.value; } // passing by value
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void add2(ExampleMandA &other) { value += other.value; } // passing by reference
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void add3(const ExampleMandA &other) { value += other.value; } // passing by const reference
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void add4(ExampleMandA *other) { value += other->value; } // passing by pointer
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void add5(const ExampleMandA *other) { value += other->value; } // passing by const pointer
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void add6(int other) { value += other; } // passing by value
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void add7(int &other) { value += other; } // passing by reference
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void add8(const int &other) { value += other; } // passing by const reference
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void add9(int *other) { value += *other; } // passing by pointer
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void add10(const int *other) { value += *other; } // passing by const pointer
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ExampleMandA self1() { return *this; } // return by value
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ExampleMandA &self2() { return *this; } // return by reference
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const ExampleMandA &self3() { return *this; } // return by const reference
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ExampleMandA *self4() { return this; } // return by pointer
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const ExampleMandA *self5() { return this; } // return by const pointer
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int internal1() { return value; } // return by value
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int &internal2() { return value; } // return by reference
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const int &internal3() { return value; } // return by const reference
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int *internal4() { return &value; } // return by pointer
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const int *internal5() { return &value; } // return by const pointer
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py::str overloaded() { return "()"; }
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py::str overloaded(int) { return "(int)"; }
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py::str overloaded(int, float) { return "(int, float)"; }
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py::str overloaded(float, int) { return "(float, int)"; }
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py::str overloaded(int, int) { return "(int, int)"; }
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py::str overloaded(float, float) { return "(float, float)"; }
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py::str overloaded(int) const { return "(int) const"; }
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py::str overloaded(int, float) const { return "(int, float) const"; }
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py::str overloaded(float, int) const { return "(float, int) const"; }
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py::str overloaded(int, int) const { return "(int, int) const"; }
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py::str overloaded(float, float) const { return "(float, float) const"; }
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static py::str overloaded(float) { return "static float"; }
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int value = 0;
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};
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struct TestProperties {
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int value = 1;
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static int static_value;
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int get() const { return value; }
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void set(int v) { value = v; }
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static int static_get() { return static_value; }
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static void static_set(int v) { static_value = v; }
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};
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int TestProperties::static_value = 1;
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struct TestPropertiesOverride : TestProperties {
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int value = 99;
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static int static_value;
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};
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int TestPropertiesOverride::static_value = 99;
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struct TestPropRVP {
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UserType v1{1};
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UserType v2{1};
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static UserType sv1;
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static UserType sv2;
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const UserType &get1() const { return v1; }
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const UserType &get2() const { return v2; }
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UserType get_rvalue() const { return v2; }
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void set1(int v) { v1.set(v); }
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void set2(int v) { v2.set(v); }
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};
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UserType TestPropRVP::sv1(1);
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UserType TestPropRVP::sv2(1);
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// py::arg/py::arg_v testing: these arguments just record their argument when invoked
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class ArgInspector1 { public: std::string arg = "(default arg inspector 1)"; };
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class ArgInspector2 { public: std::string arg = "(default arg inspector 2)"; };
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class ArgAlwaysConverts { };
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namespace pybind11 { namespace detail {
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template <> struct type_caster<ArgInspector1> {
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public:
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PYBIND11_TYPE_CASTER(ArgInspector1, _("ArgInspector1"));
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bool load(handle src, bool convert) {
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value.arg = "loading ArgInspector1 argument " +
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std::string(convert ? "WITH" : "WITHOUT") + " conversion allowed. "
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"Argument value = " + (std::string) str(src);
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return true;
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}
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static handle cast(const ArgInspector1 &src, return_value_policy, handle) {
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return str(src.arg).release();
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}
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};
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template <> struct type_caster<ArgInspector2> {
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public:
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PYBIND11_TYPE_CASTER(ArgInspector2, _("ArgInspector2"));
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bool load(handle src, bool convert) {
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value.arg = "loading ArgInspector2 argument " +
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std::string(convert ? "WITH" : "WITHOUT") + " conversion allowed. "
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"Argument value = " + (std::string) str(src);
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return true;
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}
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static handle cast(const ArgInspector2 &src, return_value_policy, handle) {
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return str(src.arg).release();
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}
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};
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template <> struct type_caster<ArgAlwaysConverts> {
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public:
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PYBIND11_TYPE_CASTER(ArgAlwaysConverts, _("ArgAlwaysConverts"));
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bool load(handle, bool convert) {
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return convert;
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}
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static handle cast(const ArgAlwaysConverts &, return_value_policy, handle) {
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return py::none().release();
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}
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};
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}}
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// test_custom_caster_destruction
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class DestructionTester {
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public:
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DestructionTester() { print_default_created(this); }
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~DestructionTester() { print_destroyed(this); }
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DestructionTester(const DestructionTester &) { print_copy_created(this); }
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DestructionTester(DestructionTester &&) { print_move_created(this); }
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DestructionTester &operator=(const DestructionTester &) { print_copy_assigned(this); return *this; }
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DestructionTester &operator=(DestructionTester &&) { print_move_assigned(this); return *this; }
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};
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namespace pybind11 { namespace detail {
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template <> struct type_caster<DestructionTester> {
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PYBIND11_TYPE_CASTER(DestructionTester, _("DestructionTester"));
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bool load(handle, bool) { return true; }
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static handle cast(const DestructionTester &, return_value_policy, handle) {
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return py::bool_(true).release();
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}
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};
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}}
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// Test None-allowed py::arg argument policy
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class NoneTester { public: int answer = 42; };
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int none1(const NoneTester &obj) { return obj.answer; }
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int none2(NoneTester *obj) { return obj ? obj->answer : -1; }
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int none3(std::shared_ptr<NoneTester> &obj) { return obj ? obj->answer : -1; }
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int none4(std::shared_ptr<NoneTester> *obj) { return obj && *obj ? (*obj)->answer : -1; }
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int none5(std::shared_ptr<NoneTester> obj) { return obj ? obj->answer : -1; }
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struct StrIssue {
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int val = -1;
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StrIssue() = default;
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StrIssue(int i) : val{i} {}
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};
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// Issues #854, #910: incompatible function args when member function/pointer is in unregistered base class
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class UnregisteredBase {
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public:
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void do_nothing() const {}
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void increase_value() { rw_value++; ro_value += 0.25; }
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void set_int(int v) { rw_value = v; }
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int get_int() const { return rw_value; }
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double get_double() const { return ro_value; }
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int rw_value = 42;
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double ro_value = 1.25;
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};
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class RegisteredDerived : public UnregisteredBase {
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public:
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using UnregisteredBase::UnregisteredBase;
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double sum() const { return rw_value + ro_value; }
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};
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TEST_SUBMODULE(methods_and_attributes, m) {
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// test_methods_and_attributes
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py::class_<ExampleMandA> emna(m, "ExampleMandA");
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emna.def(py::init<>())
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.def(py::init<int>())
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.def(py::init<const ExampleMandA&>())
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.def("add1", &ExampleMandA::add1)
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.def("add2", &ExampleMandA::add2)
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.def("add3", &ExampleMandA::add3)
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.def("add4", &ExampleMandA::add4)
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.def("add5", &ExampleMandA::add5)
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.def("add6", &ExampleMandA::add6)
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.def("add7", &ExampleMandA::add7)
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.def("add8", &ExampleMandA::add8)
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.def("add9", &ExampleMandA::add9)
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.def("add10", &ExampleMandA::add10)
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.def("self1", &ExampleMandA::self1)
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.def("self2", &ExampleMandA::self2)
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.def("self3", &ExampleMandA::self3)
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.def("self4", &ExampleMandA::self4)
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.def("self5", &ExampleMandA::self5)
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.def("internal1", &ExampleMandA::internal1)
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.def("internal2", &ExampleMandA::internal2)
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.def("internal3", &ExampleMandA::internal3)
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.def("internal4", &ExampleMandA::internal4)
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.def("internal5", &ExampleMandA::internal5)
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#if defined(PYBIND11_OVERLOAD_CAST)
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.def("overloaded", py::overload_cast<>(&ExampleMandA::overloaded))
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.def("overloaded", py::overload_cast<int>(&ExampleMandA::overloaded))
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.def("overloaded", py::overload_cast<int, float>(&ExampleMandA::overloaded))
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.def("overloaded", py::overload_cast<float, int>(&ExampleMandA::overloaded))
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.def("overloaded", py::overload_cast<int, int>(&ExampleMandA::overloaded))
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.def("overloaded", py::overload_cast<float, float>(&ExampleMandA::overloaded))
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.def("overloaded_float", py::overload_cast<float, float>(&ExampleMandA::overloaded))
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.def("overloaded_const", py::overload_cast<int >(&ExampleMandA::overloaded, py::const_))
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.def("overloaded_const", py::overload_cast<int, float>(&ExampleMandA::overloaded, py::const_))
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.def("overloaded_const", py::overload_cast<float, int>(&ExampleMandA::overloaded, py::const_))
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.def("overloaded_const", py::overload_cast<int, int>(&ExampleMandA::overloaded, py::const_))
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.def("overloaded_const", py::overload_cast<float, float>(&ExampleMandA::overloaded, py::const_))
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#else
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.def("overloaded", static_cast<py::str (ExampleMandA::*)()>(&ExampleMandA::overloaded))
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.def("overloaded", static_cast<py::str (ExampleMandA::*)(int)>(&ExampleMandA::overloaded))
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.def("overloaded", static_cast<py::str (ExampleMandA::*)(int, float)>(&ExampleMandA::overloaded))
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.def("overloaded", static_cast<py::str (ExampleMandA::*)(float, int)>(&ExampleMandA::overloaded))
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.def("overloaded", static_cast<py::str (ExampleMandA::*)(int, int)>(&ExampleMandA::overloaded))
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.def("overloaded", static_cast<py::str (ExampleMandA::*)(float, float)>(&ExampleMandA::overloaded))
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.def("overloaded_float", static_cast<py::str (ExampleMandA::*)(float, float)>(&ExampleMandA::overloaded))
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.def("overloaded_const", static_cast<py::str (ExampleMandA::*)(int ) const>(&ExampleMandA::overloaded))
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.def("overloaded_const", static_cast<py::str (ExampleMandA::*)(int, float) const>(&ExampleMandA::overloaded))
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.def("overloaded_const", static_cast<py::str (ExampleMandA::*)(float, int) const>(&ExampleMandA::overloaded))
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.def("overloaded_const", static_cast<py::str (ExampleMandA::*)(int, int) const>(&ExampleMandA::overloaded))
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.def("overloaded_const", static_cast<py::str (ExampleMandA::*)(float, float) const>(&ExampleMandA::overloaded))
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#endif
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// test_no_mixed_overloads
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// Raise error if trying to mix static/non-static overloads on the same name:
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.def_static("add_mixed_overloads1", []() {
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auto emna = py::reinterpret_borrow<py::class_<ExampleMandA>>(py::module::import("pybind11_tests.methods_and_attributes").attr("ExampleMandA"));
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emna.def ("overload_mixed1", static_cast<py::str (ExampleMandA::*)(int, int)>(&ExampleMandA::overloaded))
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.def_static("overload_mixed1", static_cast<py::str ( *)(float )>(&ExampleMandA::overloaded));
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})
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.def_static("add_mixed_overloads2", []() {
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auto emna = py::reinterpret_borrow<py::class_<ExampleMandA>>(py::module::import("pybind11_tests.methods_and_attributes").attr("ExampleMandA"));
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emna.def_static("overload_mixed2", static_cast<py::str ( *)(float )>(&ExampleMandA::overloaded))
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.def ("overload_mixed2", static_cast<py::str (ExampleMandA::*)(int, int)>(&ExampleMandA::overloaded));
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})
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.def("__str__", &ExampleMandA::toString)
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.def_readwrite("value", &ExampleMandA::value);
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// test_copy_method
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// Issue #443: can't call copied methods in Python 3
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emna.attr("add2b") = emna.attr("add2");
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// test_properties, test_static_properties, test_static_cls
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py::class_<TestProperties>(m, "TestProperties")
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.def(py::init<>())
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.def_readonly("def_readonly", &TestProperties::value)
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.def_readwrite("def_readwrite", &TestProperties::value)
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.def_property_readonly("def_property_readonly", &TestProperties::get)
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.def_property("def_property", &TestProperties::get, &TestProperties::set)
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.def_readonly_static("def_readonly_static", &TestProperties::static_value)
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.def_readwrite_static("def_readwrite_static", &TestProperties::static_value)
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.def_property_readonly_static("def_property_readonly_static",
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[](py::object) { return TestProperties::static_get(); })
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.def_property_static("def_property_static",
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[](py::object) { return TestProperties::static_get(); },
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[](py::object, int v) { TestProperties::static_set(v); })
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.def_property_static("static_cls",
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[](py::object cls) { return cls; },
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[](py::object cls, py::function f) { f(cls); });
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py::class_<TestPropertiesOverride, TestProperties>(m, "TestPropertiesOverride")
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.def(py::init<>())
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.def_readonly("def_readonly", &TestPropertiesOverride::value)
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.def_readonly_static("def_readonly_static", &TestPropertiesOverride::static_value);
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auto static_get1 = [](py::object) -> const UserType & { return TestPropRVP::sv1; };
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auto static_get2 = [](py::object) -> const UserType & { return TestPropRVP::sv2; };
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auto static_set1 = [](py::object, int v) { TestPropRVP::sv1.set(v); };
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auto static_set2 = [](py::object, int v) { TestPropRVP::sv2.set(v); };
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auto rvp_copy = py::return_value_policy::copy;
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// test_property_return_value_policies
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py::class_<TestPropRVP>(m, "TestPropRVP")
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.def(py::init<>())
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.def_property_readonly("ro_ref", &TestPropRVP::get1)
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.def_property_readonly("ro_copy", &TestPropRVP::get2, rvp_copy)
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.def_property_readonly("ro_func", py::cpp_function(&TestPropRVP::get2, rvp_copy))
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.def_property("rw_ref", &TestPropRVP::get1, &TestPropRVP::set1)
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.def_property("rw_copy", &TestPropRVP::get2, &TestPropRVP::set2, rvp_copy)
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.def_property("rw_func", py::cpp_function(&TestPropRVP::get2, rvp_copy), &TestPropRVP::set2)
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.def_property_readonly_static("static_ro_ref", static_get1)
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.def_property_readonly_static("static_ro_copy", static_get2, rvp_copy)
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.def_property_readonly_static("static_ro_func", py::cpp_function(static_get2, rvp_copy))
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.def_property_static("static_rw_ref", static_get1, static_set1)
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.def_property_static("static_rw_copy", static_get2, static_set2, rvp_copy)
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.def_property_static("static_rw_func", py::cpp_function(static_get2, rvp_copy), static_set2)
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// test_property_rvalue_policy
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.def_property_readonly("rvalue", &TestPropRVP::get_rvalue)
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.def_property_readonly_static("static_rvalue", [](py::object) { return UserType(1); });
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// test_metaclass_override
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struct MetaclassOverride { };
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py::class_<MetaclassOverride>(m, "MetaclassOverride", py::metaclass((PyObject *) &PyType_Type))
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.def_property_readonly_static("readonly", [](py::object) { return 1; });
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#if !defined(PYPY_VERSION)
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// test_dynamic_attributes
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class DynamicClass {
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public:
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DynamicClass() { print_default_created(this); }
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~DynamicClass() { print_destroyed(this); }
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};
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py::class_<DynamicClass>(m, "DynamicClass", py::dynamic_attr())
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.def(py::init());
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class CppDerivedDynamicClass : public DynamicClass { };
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py::class_<CppDerivedDynamicClass, DynamicClass>(m, "CppDerivedDynamicClass")
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.def(py::init());
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#endif
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// test_noconvert_args
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//
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// Test converting. The ArgAlwaysConverts is just there to make the first no-conversion pass
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// fail so that our call always ends up happening via the second dispatch (the one that allows
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// some conversion).
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class ArgInspector {
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public:
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ArgInspector1 f(ArgInspector1 a, ArgAlwaysConverts) { return a; }
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std::string g(ArgInspector1 a, const ArgInspector1 &b, int c, ArgInspector2 *d, ArgAlwaysConverts) {
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return a.arg + "\n" + b.arg + "\n" + std::to_string(c) + "\n" + d->arg;
|
|
}
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|
static ArgInspector2 h(ArgInspector2 a, ArgAlwaysConverts) { return a; }
|
|
};
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|
py::class_<ArgInspector>(m, "ArgInspector")
|
|
.def(py::init<>())
|
|
.def("f", &ArgInspector::f, py::arg(), py::arg() = ArgAlwaysConverts())
|
|
.def("g", &ArgInspector::g, "a"_a.noconvert(), "b"_a, "c"_a.noconvert()=13, "d"_a=ArgInspector2(), py::arg() = ArgAlwaysConverts())
|
|
.def_static("h", &ArgInspector::h, py::arg().noconvert(), py::arg() = ArgAlwaysConverts())
|
|
;
|
|
m.def("arg_inspect_func", [](ArgInspector2 a, ArgInspector1 b, ArgAlwaysConverts) { return a.arg + "\n" + b.arg; },
|
|
py::arg().noconvert(false), py::arg_v(nullptr, ArgInspector1()).noconvert(true), py::arg() = ArgAlwaysConverts());
|
|
|
|
m.def("floats_preferred", [](double f) { return 0.5 * f; }, py::arg("f"));
|
|
m.def("floats_only", [](double f) { return 0.5 * f; }, py::arg("f").noconvert());
|
|
m.def("ints_preferred", [](int i) { return i / 2; }, py::arg("i"));
|
|
m.def("ints_only", [](int i) { return i / 2; }, py::arg("i").noconvert());
|
|
|
|
// test_bad_arg_default
|
|
// Issue/PR #648: bad arg default debugging output
|
|
#if !defined(NDEBUG)
|
|
m.attr("debug_enabled") = true;
|
|
#else
|
|
m.attr("debug_enabled") = false;
|
|
#endif
|
|
m.def("bad_arg_def_named", []{
|
|
auto m = py::module::import("pybind11_tests");
|
|
m.def("should_fail", [](int, UnregisteredType) {}, py::arg(), py::arg("a") = UnregisteredType());
|
|
});
|
|
m.def("bad_arg_def_unnamed", []{
|
|
auto m = py::module::import("pybind11_tests");
|
|
m.def("should_fail", [](int, UnregisteredType) {}, py::arg(), py::arg() = UnregisteredType());
|
|
});
|
|
|
|
// test_accepts_none
|
|
py::class_<NoneTester, std::shared_ptr<NoneTester>>(m, "NoneTester")
|
|
.def(py::init<>());
|
|
m.def("no_none1", &none1, py::arg().none(false));
|
|
m.def("no_none2", &none2, py::arg().none(false));
|
|
m.def("no_none3", &none3, py::arg().none(false));
|
|
m.def("no_none4", &none4, py::arg().none(false));
|
|
m.def("no_none5", &none5, py::arg().none(false));
|
|
m.def("ok_none1", &none1);
|
|
m.def("ok_none2", &none2, py::arg().none(true));
|
|
m.def("ok_none3", &none3);
|
|
m.def("ok_none4", &none4, py::arg().none(true));
|
|
m.def("ok_none5", &none5);
|
|
|
|
// test_str_issue
|
|
// Issue #283: __str__ called on uninitialized instance when constructor arguments invalid
|
|
py::class_<StrIssue>(m, "StrIssue")
|
|
.def(py::init<int>())
|
|
.def(py::init<>())
|
|
.def("__str__", [](const StrIssue &si) {
|
|
return "StrIssue[" + std::to_string(si.val) + "]"; }
|
|
);
|
|
|
|
// test_unregistered_base_implementations
|
|
//
|
|
// Issues #854/910: incompatible function args when member function/pointer is in unregistered
|
|
// base class The methods and member pointers below actually resolve to members/pointers in
|
|
// UnregisteredBase; before this test/fix they would be registered via lambda with a first
|
|
// argument of an unregistered type, and thus uncallable.
|
|
py::class_<RegisteredDerived>(m, "RegisteredDerived")
|
|
.def(py::init<>())
|
|
.def("do_nothing", &RegisteredDerived::do_nothing)
|
|
.def("increase_value", &RegisteredDerived::increase_value)
|
|
.def_readwrite("rw_value", &RegisteredDerived::rw_value)
|
|
.def_readonly("ro_value", &RegisteredDerived::ro_value)
|
|
// These should trigger a static_assert if uncommented
|
|
//.def_readwrite("fails", &UserType::value) // should trigger a static_assert if uncommented
|
|
//.def_readonly("fails", &UserType::value) // should trigger a static_assert if uncommented
|
|
.def_property("rw_value_prop", &RegisteredDerived::get_int, &RegisteredDerived::set_int)
|
|
.def_property_readonly("ro_value_prop", &RegisteredDerived::get_double)
|
|
// This one is in the registered class:
|
|
.def("sum", &RegisteredDerived::sum)
|
|
;
|
|
|
|
using Adapted = decltype(py::method_adaptor<RegisteredDerived>(&RegisteredDerived::do_nothing));
|
|
static_assert(std::is_same<Adapted, void (RegisteredDerived::*)() const>::value, "");
|
|
|
|
// test_custom_caster_destruction
|
|
// Test that `take_ownership` works on types with a custom type caster when given a pointer
|
|
|
|
// default policy: don't take ownership:
|
|
m.def("custom_caster_no_destroy", []() { static auto *dt = new DestructionTester(); return dt; });
|
|
|
|
m.def("custom_caster_destroy", []() { return new DestructionTester(); },
|
|
py::return_value_policy::take_ownership); // Takes ownership: destroy when finished
|
|
m.def("custom_caster_destroy_const", []() -> const DestructionTester * { return new DestructionTester(); },
|
|
py::return_value_policy::take_ownership); // Likewise (const doesn't inhibit destruction)
|
|
m.def("destruction_tester_cstats", &ConstructorStats::get<DestructionTester>, py::return_value_policy::reference);
|
|
}
|