std::experimental::source_location::function_name
From cppreference.com
constexpr const char* function_name() const noexcept; |
(library fundamentals TS v2) | |
Returns the name of the function associated with the position represented by this object, if any.
Parameters
(none)
Return value
If this object represents a position in a body of a function, returns an implementation-defined null-terminated byte string corresponding to the name of the function.
Otherwise, an empty string is returned.
Example
The following example shows how it is possible to use the std::source_location::function_name() to print a name of a function, constructor, destructor, or overloaded operator().
Run this code
#include <experimental/source_location>
#include <iostream>
#include <string_view>
inline void function_name(
const std::string_view signature = "()",
const std::experimental::source_location& location
= std::experimental::source_location::current())
{
std::cout
<< location.function_name() // <- name of the caller!
<< signature
<< '\n';
}
void foo() { function_name(); }
struct S {
S() { function_name(); }
S(int) { function_name("(int)"); }
S& operator=(S const&) { function_name("(const S&)"); return *this; }
S& operator=(S&&) { function_name("(S&&)"); return *this; }
~S() { function_name(); }
};
int main()
{
foo();
S p;
S q{42};
p = q;
p = std::move(q);
}
Possible output:
foo()
S()
S(int)
operator=(const S&)
operator=(S&&)
~S()
~S()
See also
| return the line number represented by this object (public member function) | |
| return the column number represented by this object (public member function) | |
| return the file name represented by this object (public member function) | |
C++ documentation for Filename and line information
| |