mirror of
https://github.com/RYDE-WORK/pybind11.git
synced 2026-01-19 21:23:26 +08:00
7331d381af
* Raise codec errors when casting to std::string Allow the codec's exception to be raised instead of RuntimeError when casting from py::str to std::string. PY2 allows ucs surrogates in UTF-8 conversion Signed-off-by: Shane Loretz <sloretz@openrobotics.org> Signed-off-by: Shane Loretz <sloretz@osrfoundation.org> * Attempt to fix py2 error * Revert all unicode literals * Fixed Co-authored-by: Aaron Gokaslan <skylion.aaron@gmail.com>
438 lines
15 KiB
C++
438 lines
15 KiB
C++
/*
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tests/test_pytypes.cpp -- Python type casters
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Copyright (c) 2017 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 <utility>
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#include "pybind11_tests.h"
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TEST_SUBMODULE(pytypes, m) {
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// test_int
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m.def("get_int", []{return py::int_(0);});
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// test_iterator
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m.def("get_iterator", []{return py::iterator();});
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// test_iterable
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m.def("get_iterable", []{return py::iterable();});
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// test_list
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m.def("get_list", []() {
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py::list list;
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list.append("value");
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py::print("Entry at position 0:", list[0]);
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list[0] = py::str("overwritten");
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list.insert(0, "inserted-0");
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list.insert(2, "inserted-2");
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return list;
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});
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m.def("print_list", [](const py::list &list) {
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int index = 0;
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for (auto item : list)
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py::print("list item {}: {}"_s.format(index++, item));
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});
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// test_none
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m.def("get_none", []{return py::none();});
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m.def("print_none", [](const py::none &none) { py::print("none: {}"_s.format(none)); });
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// test_set
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m.def("get_set", []() {
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py::set set;
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set.add(py::str("key1"));
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set.add("key2");
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set.add(std::string("key3"));
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return set;
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});
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m.def("print_set", [](const py::set &set) {
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for (auto item : set)
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py::print("key:", item);
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});
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m.def("set_contains",
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[](const py::set &set, const py::object &key) { return set.contains(key); });
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m.def("set_contains", [](const py::set &set, const char *key) { return set.contains(key); });
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// test_dict
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m.def("get_dict", []() { return py::dict("key"_a="value"); });
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m.def("print_dict", [](const py::dict &dict) {
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for (auto item : dict)
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py::print("key: {}, value={}"_s.format(item.first, item.second));
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});
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m.def("dict_keyword_constructor", []() {
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auto d1 = py::dict("x"_a=1, "y"_a=2);
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auto d2 = py::dict("z"_a=3, **d1);
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return d2;
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});
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m.def("dict_contains",
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[](const py::dict &dict, py::object val) { return dict.contains(val); });
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m.def("dict_contains",
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[](const py::dict &dict, const char *val) { return dict.contains(val); });
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// test_str
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m.def("str_from_string", []() { return py::str(std::string("baz")); });
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m.def("str_from_bytes", []() { return py::str(py::bytes("boo", 3)); });
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m.def("str_from_object", [](const py::object& obj) { return py::str(obj); });
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m.def("repr_from_object", [](const py::object& obj) { return py::repr(obj); });
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m.def("str_from_handle", [](py::handle h) { return py::str(h); });
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m.def("str_from_string_from_str", [](const py::str& obj) {
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return py::str(static_cast<std::string>(obj));
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});
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m.def("str_format", []() {
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auto s1 = "{} + {} = {}"_s.format(1, 2, 3);
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auto s2 = "{a} + {b} = {c}"_s.format("a"_a=1, "b"_a=2, "c"_a=3);
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return py::make_tuple(s1, s2);
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});
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// test_bytes
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m.def("bytes_from_string", []() { return py::bytes(std::string("foo")); });
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m.def("bytes_from_str", []() { return py::bytes(py::str("bar", 3)); });
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// test bytearray
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m.def("bytearray_from_string", []() { return py::bytearray(std::string("foo")); });
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m.def("bytearray_size", []() { return py::bytearray("foo").size(); });
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// test_capsule
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m.def("return_capsule_with_destructor", []() {
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py::print("creating capsule");
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return py::capsule([]() {
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py::print("destructing capsule");
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});
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});
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m.def("return_capsule_with_destructor_2", []() {
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py::print("creating capsule");
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return py::capsule((void *) 1234, [](void *ptr) {
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py::print("destructing capsule: {}"_s.format((size_t) ptr));
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});
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});
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m.def("return_capsule_with_name_and_destructor", []() {
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auto capsule = py::capsule((void *) 12345, "pointer type description", [](PyObject *ptr) {
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if (ptr) {
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auto name = PyCapsule_GetName(ptr);
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py::print("destructing capsule ({}, '{}')"_s.format(
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(size_t) PyCapsule_GetPointer(ptr, name), name
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));
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}
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});
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capsule.set_pointer((void *) 1234);
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// Using get_pointer<T>()
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void* contents1 = static_cast<void*>(capsule);
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void* contents2 = capsule.get_pointer();
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void* contents3 = capsule.get_pointer<void>();
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auto result1 = reinterpret_cast<size_t>(contents1);
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auto result2 = reinterpret_cast<size_t>(contents2);
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auto result3 = reinterpret_cast<size_t>(contents3);
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py::print("created capsule ({}, '{}')"_s.format(result1 & result2 & result3, capsule.name()));
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return capsule;
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});
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// test_accessors
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m.def("accessor_api", [](const py::object &o) {
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auto d = py::dict();
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d["basic_attr"] = o.attr("basic_attr");
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auto l = py::list();
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for (auto item : o.attr("begin_end")) {
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l.append(item);
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}
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d["begin_end"] = l;
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d["operator[object]"] = o.attr("d")["operator[object]"_s];
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d["operator[char *]"] = o.attr("d")["operator[char *]"];
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d["attr(object)"] = o.attr("sub").attr("attr_obj");
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d["attr(char *)"] = o.attr("sub").attr("attr_char");
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try {
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o.attr("sub").attr("missing").ptr();
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} catch (const py::error_already_set &) {
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d["missing_attr_ptr"] = "raised"_s;
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}
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try {
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o.attr("missing").attr("doesn't matter");
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} catch (const py::error_already_set &) {
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d["missing_attr_chain"] = "raised"_s;
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}
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d["is_none"] = o.attr("basic_attr").is_none();
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d["operator()"] = o.attr("func")(1);
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d["operator*"] = o.attr("func")(*o.attr("begin_end"));
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// Test implicit conversion
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py::list implicit_list = o.attr("begin_end");
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d["implicit_list"] = implicit_list;
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py::dict implicit_dict = o.attr("__dict__");
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d["implicit_dict"] = implicit_dict;
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return d;
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});
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m.def("tuple_accessor", [](const py::tuple &existing_t) {
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try {
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existing_t[0] = 1;
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} catch (const py::error_already_set &) {
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// --> Python system error
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// Only new tuples (refcount == 1) are mutable
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auto new_t = py::tuple(3);
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for (size_t i = 0; i < new_t.size(); ++i) {
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new_t[i] = i;
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}
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return new_t;
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}
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return py::tuple();
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});
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m.def("accessor_assignment", []() {
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auto l = py::list(1);
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l[0] = 0;
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auto d = py::dict();
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d["get"] = l[0];
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auto var = l[0];
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d["deferred_get"] = var;
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l[0] = 1;
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d["set"] = l[0];
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var = 99; // this assignment should not overwrite l[0]
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d["deferred_set"] = l[0];
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d["var"] = var;
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return d;
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});
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// test_constructors
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m.def("default_constructors", []() {
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return py::dict(
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"bytes"_a=py::bytes(),
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"bytearray"_a=py::bytearray(),
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"str"_a=py::str(),
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"bool"_a=py::bool_(),
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"int"_a=py::int_(),
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"float"_a=py::float_(),
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"tuple"_a=py::tuple(),
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"list"_a=py::list(),
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"dict"_a=py::dict(),
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"set"_a=py::set()
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);
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});
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m.def("converting_constructors", [](const py::dict &d) {
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return py::dict(
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"bytes"_a=py::bytes(d["bytes"]),
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"bytearray"_a=py::bytearray(d["bytearray"]),
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"str"_a=py::str(d["str"]),
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"bool"_a=py::bool_(d["bool"]),
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"int"_a=py::int_(d["int"]),
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"float"_a=py::float_(d["float"]),
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"tuple"_a=py::tuple(d["tuple"]),
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"list"_a=py::list(d["list"]),
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"dict"_a=py::dict(d["dict"]),
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"set"_a=py::set(d["set"]),
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"memoryview"_a=py::memoryview(d["memoryview"])
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);
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});
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m.def("cast_functions", [](const py::dict &d) {
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// When converting between Python types, obj.cast<T>() should be the same as T(obj)
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return py::dict(
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"bytes"_a=d["bytes"].cast<py::bytes>(),
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"bytearray"_a=d["bytearray"].cast<py::bytearray>(),
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"str"_a=d["str"].cast<py::str>(),
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"bool"_a=d["bool"].cast<py::bool_>(),
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"int"_a=d["int"].cast<py::int_>(),
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"float"_a=d["float"].cast<py::float_>(),
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"tuple"_a=d["tuple"].cast<py::tuple>(),
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"list"_a=d["list"].cast<py::list>(),
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"dict"_a=d["dict"].cast<py::dict>(),
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"set"_a=d["set"].cast<py::set>(),
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"memoryview"_a=d["memoryview"].cast<py::memoryview>()
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);
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});
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m.def("convert_to_pybind11_str", [](const py::object &o) { return py::str(o); });
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m.def("nonconverting_constructor",
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[](const std::string &type, py::object value, bool move) -> py::object {
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if (type == "bytes") {
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return move ? py::bytes(std::move(value)) : py::bytes(value);
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}
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if (type == "none") {
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return move ? py::none(std::move(value)) : py::none(value);
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}
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if (type == "ellipsis") {
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return move ? py::ellipsis(std::move(value)) : py::ellipsis(value);
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}
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if (type == "type") {
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return move ? py::type(std::move(value)) : py::type(value);
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}
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throw std::runtime_error("Invalid type");
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});
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m.def("get_implicit_casting", []() {
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py::dict d;
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d["char*_i1"] = "abc";
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const char *c2 = "abc";
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d["char*_i2"] = c2;
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d["char*_e"] = py::cast(c2);
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d["char*_p"] = py::str(c2);
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d["int_i1"] = 42;
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int i = 42;
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d["int_i2"] = i;
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i++;
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d["int_e"] = py::cast(i);
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i++;
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d["int_p"] = py::int_(i);
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d["str_i1"] = std::string("str");
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std::string s2("str1");
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d["str_i2"] = s2;
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s2[3] = '2';
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d["str_e"] = py::cast(s2);
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s2[3] = '3';
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d["str_p"] = py::str(s2);
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py::list l(2);
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l[0] = 3;
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l[1] = py::cast(6);
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l.append(9);
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l.append(py::cast(12));
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l.append(py::int_(15));
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return py::dict(
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"d"_a=d,
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"l"_a=l
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);
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});
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// test_print
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m.def("print_function", []() {
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py::print("Hello, World!");
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py::print(1, 2.0, "three", true, std::string("-- multiple args"));
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auto args = py::make_tuple("and", "a", "custom", "separator");
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py::print("*args", *args, "sep"_a="-");
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py::print("no new line here", "end"_a=" -- ");
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py::print("next print");
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auto py_stderr = py::module_::import("sys").attr("stderr");
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py::print("this goes to stderr", "file"_a=py_stderr);
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py::print("flush", "flush"_a=true);
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py::print("{a} + {b} = {c}"_s.format("a"_a="py::print", "b"_a="str.format", "c"_a="this"));
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});
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m.def("print_failure", []() { py::print(42, UnregisteredType()); });
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m.def("hash_function", [](py::object obj) { return py::hash(std::move(obj)); });
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m.def("test_number_protocol", [](const py::object &a, const py::object &b) {
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py::list l;
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l.append(a.equal(b));
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l.append(a.not_equal(b));
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l.append(a < b);
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l.append(a <= b);
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l.append(a > b);
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l.append(a >= b);
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l.append(a + b);
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l.append(a - b);
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l.append(a * b);
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l.append(a / b);
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l.append(a | b);
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l.append(a & b);
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l.append(a ^ b);
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l.append(a >> b);
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l.append(a << b);
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return l;
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});
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m.def("test_list_slicing", [](const py::list &a) { return a[py::slice(0, -1, 2)]; });
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// See #2361
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m.def("issue2361_str_implicit_copy_none", []() {
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py::str is_this_none = py::none();
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return is_this_none;
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});
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m.def("issue2361_dict_implicit_copy_none", []() {
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py::dict is_this_none = py::none();
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return is_this_none;
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});
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m.def("test_memoryview_object", [](const py::buffer &b) { return py::memoryview(b); });
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m.def("test_memoryview_buffer_info",
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[](const py::buffer &b) { return py::memoryview(b.request()); });
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m.def("test_memoryview_from_buffer", [](bool is_unsigned) {
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static const int16_t si16[] = { 3, 1, 4, 1, 5 };
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static const uint16_t ui16[] = { 2, 7, 1, 8 };
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if (is_unsigned)
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return py::memoryview::from_buffer(
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ui16, { 4 }, { sizeof(uint16_t) });
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return py::memoryview::from_buffer(si16, {5}, {sizeof(int16_t)});
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});
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m.def("test_memoryview_from_buffer_nativeformat", []() {
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static const char* format = "@i";
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static const int32_t arr[] = { 4, 7, 5 };
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return py::memoryview::from_buffer(
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arr, sizeof(int32_t), format, { 3 }, { sizeof(int32_t) });
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});
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m.def("test_memoryview_from_buffer_empty_shape", []() {
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static const char* buf = "";
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return py::memoryview::from_buffer(buf, 1, "B", { }, { });
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});
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m.def("test_memoryview_from_buffer_invalid_strides", []() {
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static const char* buf = "\x02\x03\x04";
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return py::memoryview::from_buffer(buf, 1, "B", { 3 }, { });
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});
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m.def("test_memoryview_from_buffer_nullptr", []() {
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return py::memoryview::from_buffer(
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static_cast<void*>(nullptr), 1, "B", { }, { });
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});
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#if PY_MAJOR_VERSION >= 3
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m.def("test_memoryview_from_memory", []() {
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const char* buf = "\xff\xe1\xab\x37";
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return py::memoryview::from_memory(
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buf, static_cast<py::ssize_t>(strlen(buf)));
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});
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#endif
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// test_builtin_functions
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m.def("get_len", [](py::handle h) { return py::len(h); });
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#ifdef PYBIND11_STR_LEGACY_PERMISSIVE
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m.attr("PYBIND11_STR_LEGACY_PERMISSIVE") = true;
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#endif
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m.def("isinstance_pybind11_bytes",
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[](py::object o) { return py::isinstance<py::bytes>(std::move(o)); });
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m.def("isinstance_pybind11_str",
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[](py::object o) { return py::isinstance<py::str>(std::move(o)); });
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m.def("pass_to_pybind11_bytes", [](py::bytes b) { return py::len(std::move(b)); });
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m.def("pass_to_pybind11_str", [](py::str s) { return py::len(std::move(s)); });
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m.def("pass_to_std_string", [](const std::string &s) { return s.size(); });
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// test_weakref
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m.def("weakref_from_handle",
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[](py::handle h) { return py::weakref(h); });
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m.def("weakref_from_handle_and_function",
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[](py::handle h, py::function f) { return py::weakref(h, std::move(f)); });
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m.def("weakref_from_object", [](const py::object &o) { return py::weakref(o); });
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m.def("weakref_from_object_and_function",
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[](py::object o, py::function f) { return py::weakref(std::move(o), std::move(f)); });
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}
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