caller trouble

[Timon Gehr]

On 07/14/2012 08:53 AM, captaindet wrote:
> i need a discreet handle on the calling/instantiating source file
> (module). using __FILE__, it is surprisingly easy for functions (via
> argument) and templated functions (via template parameter) but i cannot
> get it working for templated classes. how can i make them aware of the
> calling module?
>
> thx, det
>
>
> module other;
>
> string fun(string infile = __FILE__){ return infile; }
> string tfun(string infile = __FILE__)(){ return infile; }
> class tclass(string infile = __FILE__){ string from = infile; }
>
> //...//
>
> module main;
> import other;
>
> void main(){
>      auto _fun = fun();            //_fun == "main.d"
>      auto _tfun = tfun();        //_tfun == "main.d"
>      auto _tclass = new tclass!();    //_tclass.from == "other.d" !!!
>
>      //this works but i do not want to provide __FILE__ explicitly:
>      auto _tclassx = new tclass!(__FILE__)();    //_tclass.from == "main.d"
>      //and why do i get 2 different results for the last 2 cases?
> }

This is a bug.

dlang.org agrees: http://dlang.org/template.html#TemplateValueParameter