c++ - Capture __LINE__ and __FILE__ without #define

Question

Trying to determine a "modern" implementation for the following C-style code:

#define logError(...) log(__FILE__, __LINE__, __VA_ARGS__)

Is is possible to capture this using variadic templates or something similar that does not rely on a #define ?

Desired use case:

logError( "Oh no! An error occurred!" );

Where __FILE__, and __LINE__ are captured under the hood, but reflect the file name and line number of where logError was called from.

Answer 1

Macros are indeed your only choice, at least until std::source_location makes it into the standard and fulfills your wish.