kicad/thirdparty/pybind11/tests/test_enum.cpp

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/*
tests/test_enums.cpp -- enumerations
Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#include "pybind11_tests.h"
TEST_SUBMODULE(enums, m) {
// test_unscoped_enum
enum UnscopedEnum { EOne = 1, ETwo, EThree };
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py::enum_<UnscopedEnum>(m, "UnscopedEnum", py::arithmetic(), "An unscoped enumeration")
.value("EOne", EOne, "Docstring for EOne")
.value("ETwo", ETwo, "Docstring for ETwo")
.value("EThree", EThree, "Docstring for EThree")
.export_values();
// test_scoped_enum
enum class ScopedEnum { Two = 2, Three };
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py::enum_<ScopedEnum>(m, "ScopedEnum", py::arithmetic())
.value("Two", ScopedEnum::Two)
.value("Three", ScopedEnum::Three);
m.def("test_scoped_enum", [](ScopedEnum z) {
return "ScopedEnum::" + std::string(z == ScopedEnum::Two ? "Two" : "Three");
});
// test_binary_operators
enum Flags { Read = 4, Write = 2, Execute = 1 };
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py::enum_<Flags>(m, "Flags", py::arithmetic())
.value("Read", Flags::Read)
.value("Write", Flags::Write)
.value("Execute", Flags::Execute)
.export_values();
// test_implicit_conversion
class ClassWithUnscopedEnum {
public:
enum EMode { EFirstMode = 1, ESecondMode };
static EMode test_function(EMode mode) { return mode; }
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};
py::class_<ClassWithUnscopedEnum> exenum_class(m, "ClassWithUnscopedEnum");
exenum_class.def_static("test_function", &ClassWithUnscopedEnum::test_function);
py::enum_<ClassWithUnscopedEnum::EMode>(exenum_class, "EMode")
.value("EFirstMode", ClassWithUnscopedEnum::EFirstMode)
.value("ESecondMode", ClassWithUnscopedEnum::ESecondMode)
.export_values();
// test_enum_to_int
m.def("test_enum_to_int", [](int) {});
m.def("test_enum_to_uint", [](uint32_t) {});
m.def("test_enum_to_long_long", [](long long) {});
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// test_duplicate_enum_name
enum SimpleEnum { ONE, TWO, THREE };
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m.def("register_bad_enum", [m]() {
py::enum_<SimpleEnum>(m, "SimpleEnum")
.value("ONE", SimpleEnum::ONE) // NOTE: all value function calls are called with the
// same first parameter value
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.value("ONE", SimpleEnum::TWO)
.value("ONE", SimpleEnum::THREE)
.export_values();
});
// test_enum_scalar
enum UnscopedUCharEnum : unsigned char {};
enum class ScopedShortEnum : short {};
enum class ScopedLongEnum : long {};
enum UnscopedUInt64Enum : std::uint64_t {};
static_assert(
py::detail::all_of<
std::is_same<py::enum_<UnscopedUCharEnum>::Scalar, unsigned char>,
std::is_same<py::enum_<ScopedShortEnum>::Scalar, short>,
std::is_same<py::enum_<ScopedLongEnum>::Scalar, long>,
std::is_same<py::enum_<UnscopedUInt64Enum>::Scalar, std::uint64_t>>::value,
"Error during the deduction of enum's scalar type with normal integer underlying");
// test_enum_scalar_with_char_underlying
enum class ScopedCharEnum : char { Zero, Positive };
enum class ScopedWCharEnum : wchar_t { Zero, Positive };
enum class ScopedChar32Enum : char32_t { Zero, Positive };
enum class ScopedChar16Enum : char16_t { Zero, Positive };
// test the scalar of char type enums according to chapter 'Character types'
// from https://en.cppreference.com/w/cpp/language/types
static_assert(
py::detail::any_of<
std::is_same<py::enum_<ScopedCharEnum>::Scalar, signed char>, // e.g. gcc on x86
std::is_same<py::enum_<ScopedCharEnum>::Scalar, unsigned char> // e.g. arm linux
>::value,
"char should be cast to either signed char or unsigned char");
static_assert(sizeof(py::enum_<ScopedWCharEnum>::Scalar) == 2
|| sizeof(py::enum_<ScopedWCharEnum>::Scalar) == 4,
"wchar_t should be either 16 bits (Windows) or 32 (everywhere else)");
static_assert(
py::detail::all_of<
std::is_same<py::enum_<ScopedChar32Enum>::Scalar, std::uint_least32_t>,
std::is_same<py::enum_<ScopedChar16Enum>::Scalar, std::uint_least16_t>>::value,
"char32_t, char16_t (and char8_t)'s size, signedness, and alignment is determined");
#if defined(PYBIND11_HAS_U8STRING)
enum class ScopedChar8Enum : char8_t { Zero, Positive };
static_assert(std::is_same<py::enum_<ScopedChar8Enum>::Scalar, unsigned char>::value);
#endif
// test_char_underlying_enum
py::enum_<ScopedCharEnum>(m, "ScopedCharEnum")
.value("Zero", ScopedCharEnum::Zero)
.value("Positive", ScopedCharEnum::Positive);
py::enum_<ScopedWCharEnum>(m, "ScopedWCharEnum")
.value("Zero", ScopedWCharEnum::Zero)
.value("Positive", ScopedWCharEnum::Positive);
py::enum_<ScopedChar32Enum>(m, "ScopedChar32Enum")
.value("Zero", ScopedChar32Enum::Zero)
.value("Positive", ScopedChar32Enum::Positive);
py::enum_<ScopedChar16Enum>(m, "ScopedChar16Enum")
.value("Zero", ScopedChar16Enum::Zero)
.value("Positive", ScopedChar16Enum::Positive);
// test_bool_underlying_enum
enum class ScopedBoolEnum : bool { FALSE, TRUE };
// bool is unsigned (std::is_signed returns false) and 1-byte long, so represented with u8
static_assert(std::is_same<py::enum_<ScopedBoolEnum>::Scalar, std::uint8_t>::value, "");
py::enum_<ScopedBoolEnum>(m, "ScopedBoolEnum")
.value("FALSE", ScopedBoolEnum::FALSE)
.value("TRUE", ScopedBoolEnum::TRUE);
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}