string file = __FILE__ considered harmful (and solution)

[Steven Schveighoffer]

On 5/31/18 7:14 AM, bauss wrote:
> Instead of these hack keywords.
> 
> Perhaps a __traits() in the compiler with the information would be 
> better suited like:
> 
> 
> void foo()
> {
>      enum caller = __traits(getCaller);
> 
>      ....
> }
> 
> getCaller would return a compile-time struct with additional information 
> about the current module and the module/function it was called from.

How can this be possible? When inside the function, you have no idea 
where you were called from.

-Steve