1 /*
2 tests/test_constants_and_functions.cpp -- global constants and functions, enumerations, raw byte strings
3
4 Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
5
6 All rights reserved. Use of this source code is governed by a
7 BSD-style license that can be found in the LICENSE file.
8 */
9
10 #include "pybind11_tests.h"
11
12 enum MyEnum { EFirstEntry = 1, ESecondEntry };
13
test_function1()14 std::string test_function1() {
15 return "test_function()";
16 }
17
test_function2(MyEnum k)18 std::string test_function2(MyEnum k) {
19 return "test_function(enum=" + std::to_string(k) + ")";
20 }
21
test_function3(int i)22 std::string test_function3(int i) {
23 return "test_function(" + std::to_string(i) + ")";
24 }
25
test_function4()26 py::str test_function4() { return "test_function()"; }
test_function4(char *)27 py::str test_function4(char *) { return "test_function(char *)"; }
test_function4(int,float)28 py::str test_function4(int, float) { return "test_function(int, float)"; }
test_function4(float,int)29 py::str test_function4(float, int) { return "test_function(float, int)"; }
30
return_bytes()31 py::bytes return_bytes() {
32 const char *data = "\x01\x00\x02\x00";
33 return std::string(data, 4);
34 }
35
print_bytes(py::bytes bytes)36 std::string print_bytes(py::bytes bytes) {
37 std::string ret = "bytes[";
38 const auto value = static_cast<std::string>(bytes);
39 for (size_t i = 0; i < value.length(); ++i) {
40 ret += std::to_string(static_cast<int>(value[i])) + " ";
41 }
42 ret.back() = ']';
43 return ret;
44 }
45
46 // Test that we properly handle C++17 exception specifiers (which are part of the function signature
47 // in C++17). These should all still work before C++17, but don't affect the function signature.
48 namespace test_exc_sp {
f1(int x)49 int f1(int x) noexcept { return x+1; }
f2(int x)50 int f2(int x) noexcept(true) { return x+2; }
f3(int x)51 int f3(int x) noexcept(false) { return x+3; }
52 #if defined(__GNUG__)
53 # pragma GCC diagnostic push
54 # pragma GCC diagnostic ignored "-Wdeprecated"
55 #endif
f4(int x)56 int f4(int x) throw() { return x+4; } // Deprecated equivalent to noexcept(true)
57 #if defined(__GNUG__)
58 # pragma GCC diagnostic pop
59 #endif
60 struct C {
m1test_exc_sp::C61 int m1(int x) noexcept { return x-1; }
m2test_exc_sp::C62 int m2(int x) const noexcept { return x-2; }
m3test_exc_sp::C63 int m3(int x) noexcept(true) { return x-3; }
m4test_exc_sp::C64 int m4(int x) const noexcept(true) { return x-4; }
m5test_exc_sp::C65 int m5(int x) noexcept(false) { return x-5; }
m6test_exc_sp::C66 int m6(int x) const noexcept(false) { return x-6; }
67 #if defined(__GNUG__)
68 # pragma GCC diagnostic push
69 # pragma GCC diagnostic ignored "-Wdeprecated"
70 #endif
m7test_exc_sp::C71 int m7(int x) throw() { return x-7; }
m8test_exc_sp::C72 int m8(int x) const throw() { return x-8; }
73 #if defined(__GNUG__)
74 # pragma GCC diagnostic pop
75 #endif
76 };
77 }
78
79
TEST_SUBMODULE(constants_and_functions,m)80 TEST_SUBMODULE(constants_and_functions, m) {
81 // test_constants
82 m.attr("some_constant") = py::int_(14);
83
84 // test_function_overloading
85 m.def("test_function", &test_function1);
86 m.def("test_function", &test_function2);
87 m.def("test_function", &test_function3);
88
89 #if defined(PYBIND11_OVERLOAD_CAST)
90 m.def("test_function", py::overload_cast<>(&test_function4));
91 m.def("test_function", py::overload_cast<char *>(&test_function4));
92 m.def("test_function", py::overload_cast<int, float>(&test_function4));
93 m.def("test_function", py::overload_cast<float, int>(&test_function4));
94 #else
95 m.def("test_function", static_cast<py::str (*)()>(&test_function4));
96 m.def("test_function", static_cast<py::str (*)(char *)>(&test_function4));
97 m.def("test_function", static_cast<py::str (*)(int, float)>(&test_function4));
98 m.def("test_function", static_cast<py::str (*)(float, int)>(&test_function4));
99 #endif
100
101 py::enum_<MyEnum>(m, "MyEnum")
102 .value("EFirstEntry", EFirstEntry)
103 .value("ESecondEntry", ESecondEntry)
104 .export_values();
105
106 // test_bytes
107 m.def("return_bytes", &return_bytes);
108 m.def("print_bytes", &print_bytes);
109
110 // test_exception_specifiers
111 using namespace test_exc_sp;
112 py::class_<C>(m, "C")
113 .def(py::init<>())
114 .def("m1", &C::m1)
115 .def("m2", &C::m2)
116 .def("m3", &C::m3)
117 .def("m4", &C::m4)
118 .def("m5", &C::m5)
119 .def("m6", &C::m6)
120 .def("m7", &C::m7)
121 .def("m8", &C::m8)
122 ;
123 m.def("f1", f1);
124 m.def("f2", f2);
125 m.def("f3", f3);
126 m.def("f4", f4);
127 }
128