/*

    tests/test_constants_and_functions.cpp -- global constants and functions, enumerations, raw byte strings

    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"

enum MyEnum { EFirstEntry = 1, ESecondEntry };

std::string test_function1() {

    return "test_function()";

}

std::string test_function2(MyEnum k) {

    return "test_function(enum=" + std::to_string(k) + ")";

}

std::string test_function3(int i) {

    return "test_function(" + std::to_string(i) + ")";

}

py::str test_function4()           { return "test_function()"; }

py::str test_function4(char *)     { return "test_function(char *)"; }

py::str test_function4(int, float) { return "test_function(int, float)"; }

py::str test_function4(float, int) { return "test_function(float, int)"; }

py::bytes return_bytes() {

    const char *data = "\x01\x00\x02\x00";

    return std::string(data, 4);

}

std::string print_bytes(py::bytes bytes) {

    std::string ret = "bytes[";

    const auto value = static_cast<std::string>(bytes);

    for (size_t i = 0; i < value.length(); ++i) {

        ret += std::to_string(static_cast<int>(value[i])) + " ";

    }

    ret.back() = ']';

    return ret;

}

// Test that we properly handle C++17 exception specifiers (which are part of the function signature

// in C++17).  These should all still work before C++17, but don't affect the function signature.

namespace test_exc_sp {

int f1(int x) noexcept { return x+1; }

int f2(int x) noexcept(true) { return x+2; }

int f3(int x) noexcept(false) { return x+3; }

#if defined(__GNUG__)

#  pragma GCC diagnostic push

#  pragma GCC diagnostic ignored "-Wdeprecated"

#endif

int f4(int x) throw() { return x+4; } // Deprecated equivalent to noexcept(true)

#if defined(__GNUG__)

#  pragma GCC diagnostic pop

#endif

struct C {

    int m1(int x) noexcept { return x-1; }

    int m2(int x) const noexcept { return x-2; }

    int m3(int x) noexcept(true) { return x-3; }

    int m4(int x) const noexcept(true) { return x-4; }

    int m5(int x) noexcept(false) { return x-5; }

    int m6(int x) const noexcept(false) { return x-6; }

#if defined(__GNUG__)

#  pragma GCC diagnostic push

#  pragma GCC diagnostic ignored "-Wdeprecated"

#endif

    int m7(int x) throw() { return x-7; }

    int m8(int x) const throw() { return x-8; }

#if defined(__GNUG__)

#  pragma GCC diagnostic pop

#endif

};

}

TEST_SUBMODULE(constants_and_functions, m) {

    // test_constants

    m.attr("some_constant") = py::int_(14);

    // test_function_overloading

    m.def("test_function", &test_function1);

    m.def("test_function", &test_function2);

    m.def("test_function", &test_function3);

#if defined(PYBIND11_OVERLOAD_CAST)

    m.def("test_function", py::overload_cast<>(&test_function4));

    m.def("test_function", py::overload_cast<char *>(&test_function4));

    m.def("test_function", py::overload_cast<int, float>(&test_function4));

    m.def("test_function", py::overload_cast<float, int>(&test_function4));

#else

    m.def("test_function", static_cast<py::str (*)()>(&test_function4));

    m.def("test_function", static_cast<py::str (*)(char *)>(&test_function4));

    m.def("test_function", static_cast<py::str (*)(int, float)>(&test_function4));

    m.def("test_function", static_cast<py::str (*)(float, int)>(&test_function4));

#endif

    py::enum_<MyEnum>(m, "MyEnum")

        .value("EFirstEntry", EFirstEntry)

        .value("ESecondEntry", ESecondEntry)

        .export_values();

    // test_bytes

    m.def("return_bytes", &return_bytes);

    m.def("print_bytes", &print_bytes);

    // test_exception_specifiers

    using namespace test_exc_sp;

    py::class_<C>(m, "C")

        .def(py::init<>())

        .def("m1", &C::m1)

        .def("m2", &C::m2)

        .def("m3", &C::m3)

        .def("m4", &C::m4)

        .def("m5", &C::m5)

        .def("m6", &C::m6)

        .def("m7", &C::m7)

        .def("m8", &C::m8)

        ;

    m.def("f1", f1);

    m.def("f2", f2);

    m.def("f3", f3);

    m.def("f4", f4);

}