174 lines
6.2 KiB
C++
174 lines
6.2 KiB
C++
// nameof example
|
|
//
|
|
// Licensed under the MIT License <http://opensource.org/licenses/MIT>.
|
|
// Copyright (c) 2018 Daniil Goncharov <neargye@gmail.com>.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
#include <nameof.hpp>
|
|
|
|
#include <iostream>
|
|
#include <string>
|
|
#include <stdexcept>
|
|
#include <typeinfo>
|
|
|
|
constexpr long double operator"" _deg(long double deg) {
|
|
return deg * 3.141592 / 180.0;
|
|
}
|
|
|
|
std::string operator"" _string(const char* str, std::size_t) {
|
|
return std::string{str};
|
|
}
|
|
|
|
struct SomeStruct {
|
|
int somefield = 0;
|
|
|
|
void SomeMethod1(const int i) { somefield = i; }
|
|
|
|
int SomeMethod2() const { return somefield; }
|
|
};
|
|
|
|
void SomeMethod3() {
|
|
std::cout << NAMEOF(SomeMethod3) << " no called!" << std::endl;
|
|
}
|
|
|
|
template <typename T>
|
|
T SomeMethod4() {
|
|
return T{};
|
|
}
|
|
|
|
template <typename T>
|
|
class SomeClass {
|
|
public:
|
|
void SomeMethod5() const {}
|
|
|
|
template <typename C>
|
|
C SomeMethod6() const { return C{}; }
|
|
};
|
|
|
|
struct Long {
|
|
struct LL {
|
|
int field = 0;
|
|
};
|
|
LL ll;
|
|
};
|
|
|
|
enum class Color { RED, GREEN, BLUE };
|
|
|
|
SomeStruct somevar;
|
|
Long othervar;
|
|
SomeStruct& refvar = somevar;
|
|
SomeStruct* ptrvar = &somevar;
|
|
|
|
int main() {
|
|
std::cout << typeid(std::string).name() << std::endl;
|
|
// constexpr
|
|
constexpr auto constexpr_work_fine = NAMEOF(somevar);
|
|
std::cout << constexpr_work_fine << std::endl; // somevar
|
|
|
|
// enum
|
|
std::cout << NAMEOF(Color::RED) << std::endl; // RED
|
|
|
|
// variable
|
|
std::cout << NAMEOF(somevar) << std::endl; // somevar
|
|
std::cout << NAMEOF(::somevar) << std::endl; // somevar
|
|
|
|
// member
|
|
std::cout << NAMEOF(somevar.somefield) << std::endl; // somefield
|
|
std::cout << NAMEOF((&somevar)->somefield) << std::endl; // somefield
|
|
std::cout << NAMEOF(othervar.ll.field) << std::endl; // field
|
|
|
|
// function
|
|
std::cout << NAMEOF(&SomeStruct::SomeMethod1) << std::endl; // SomeMethod1
|
|
std::cout << NAMEOF(&SomeStruct::SomeMethod2) << std::endl; // SomeMethod2
|
|
std::cout << NAMEOF(SomeMethod3) << std::endl; // SomeMethod3
|
|
std::cout << NAMEOF(SomeMethod4<int>) << std::endl; // SomeMethod4
|
|
std::cout << NAMEOF(&SomeClass<int>::SomeMethod5) << std::endl; // SomeMethod5
|
|
std::cout << NAMEOF(&SomeClass<int>::SomeMethod6<long int>) << std::endl; // SomeMethod6
|
|
|
|
// function with template prefix
|
|
std::cout << NAMEOF_T(SomeMethod4<int>) << std::endl; // SomeMethod4<int>
|
|
std::cout << NAMEOF_T(&SomeClass<int>::SomeMethod6<long int>) << std::endl; // SomeMethod6<long int>
|
|
|
|
// type
|
|
std::cout << NAMEOF_TYPE(std::string{}) << std::endl; // basic_string
|
|
std::cout << NAMEOF_TYPE(somevar) << std::endl; // SomeStruct
|
|
std::cout << NAMEOF_TYPE(refvar) << std::endl; // SomeStruct&
|
|
std::cout << NAMEOF_TYPE(ptrvar) << std::endl; // SomeStruct*
|
|
std::cout << NAMEOF_TYPE(Color::RED) << std::endl; // Color
|
|
|
|
std::cout << NAMEOF_RAW(int[]) << std::endl; // int[]
|
|
std::cout << NAMEOF_RAW(SomeStruct) << std::endl; // SomeStruct
|
|
std::cout << NAMEOF_RAW(Long::LL) << std::endl; // Long::LL
|
|
std::cout << NAMEOF_RAW(volatile const int) << std::endl; // volatile const int
|
|
|
|
// macros
|
|
std::cout << NAMEOF_RAW(__LINE__) << std::endl; // __LINE__
|
|
std::cout << NAMEOF_RAW(__FILE__) << std::endl; // __FILE__
|
|
|
|
// full name
|
|
std::cout << NAMEOF_RAW(somevar.somefield) << std::endl; // somevar.somefield
|
|
std::cout << NAMEOF_RAW(&SomeClass<int>::SomeMethod6<long int>) << std::endl; // &SomeClass<int>::SomeMethod6<long int>
|
|
std::cout << NAMEOF_RAW(Long::LL) << std::endl; // Long::LL
|
|
|
|
const auto div = [](int x, int y) -> int {
|
|
if (y == 0) {
|
|
throw std::invalid_argument(std::string(NAMEOF(y)).append(" should not be zero!"));
|
|
}
|
|
return x / y;
|
|
};
|
|
|
|
try {
|
|
const int z = div(10, 0);
|
|
std::cout << z << std::endl;
|
|
} catch (const std::exception& e) {
|
|
std::cout << e.what() << std::endl; // y should not be zero!
|
|
}
|
|
|
|
/* Remarks */
|
|
|
|
// Spaces and Tabs ignored
|
|
std::cout << NAMEOF( somevar ) << std::endl; // somevar
|
|
std::cout << NAMEOF( somevar ) << std::endl; // somevar
|
|
|
|
#if 0
|
|
// This expression does not have a name.
|
|
std::cout << NAMEOF("Bad case") << std::endl; // '"Bad case"'
|
|
std::cout << NAMEOF("Bad case"_string) << std::endl; // '"Bad case"_string'
|
|
std::cout << NAMEOF("somevar.somefield") << std::endl; // 'somefield"'
|
|
std::cout << NAMEOF(42.0) << std::endl; // '0'
|
|
std::cout << NAMEOF(42.f) << std::endl; // 'f'
|
|
std::cout << NAMEOF(42) << std::endl; // '42'
|
|
std::cout << NAMEOF(42.0_deg) << std::endl; // '0_deg'
|
|
std::cout << NAMEOF(std::string()) << std::endl; // 'string()'
|
|
std::cout << NAMEOF(std::string{}) << std::endl; // "string{}'
|
|
std::cout << NAMEOF(std::string{"test"}) << std::endl; // 'string{"test"}'
|
|
std::cout << NAMEOF(SomeMethod4<int>()) << std::endl; // '()'
|
|
std::cout << NAMEOF(std::basic_string<char>) << std::endl; // ''
|
|
std::cout << NAMEOF(ptrvar[0]) << std::endl; // 'ptrvar[0]'
|
|
std::cout << NAMEOF(intvar + intvar) << std::endl; // ' intvar'
|
|
std::cout << NAMEOF(NAMEOF(intvar)) << std::endl; // 'NAMEOF(intvar)'
|
|
std::cout << NAMEOF(std::cout << intvar << std::endl) << std::endl; // 'endl'
|
|
std::cout << NAMEOF(decltype(intvar)) << std::endl; // 'decltype(intvar)'
|
|
std::cout << NAMEOF(typeid(intvar)) << std::endl; // 'typeid(intvar)'
|
|
std::cout << NAMEOF((intvar)) << std::endl; // '(intvar)'
|
|
#endif
|
|
|
|
return 0;
|
|
}
|