std::experimental::reflect::get_source_line

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Defined in header <experimental/reflect>
template< Object T >
struct get_source_line;
 (reflection TS)

Provides the member constant value equal to the presumed line number of the declaration of the entity or typedef-name reflected by T.

Helper variable template

template < class T >
constexpr auto get_source_line_v = get_source_line<T> :: value ;
(reflection TS)

Inherited from std::integral_constant

Member constants

value
[static]
 the presumed line number of the declaration of the entity or typedef-name reflected by T
(public static member constant)

Member functions

operator std::uint_least32_t
 converts the object to std::uint_least32_t, returns value
(public member function)
operator()
(C++14)
 returns value
(public member function)

Member types

Type Definition
value_type std::uint_least32_t
type std::integral_constant < std::uint_least32_t, value>

Example

The following code shows the source code line of an object or a class.

Run this code
#include<experimental/reflect>
#include<iostream>
 
using refl = std::experimental::reflect;
 
float f;
struct P{};
 
int main()
{
    std::cout << refl::get_source_line_v<reflexpr(f)> << '\n';
    std::cout << refl::get_source_line_v<reflexpr(P)> << '\n';
}

Output: 

6
7

See also

 return the line number represented by this object
(public member function of std::source_location)
gets the line number that lexically relates the evaluation represented by the stacktrace_entry
(public member function of std::stacktrace_entry)
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