On Mon, Nov 7, 2022 at 9:24 AM John <johnsiil...@gmail.com> wrote: > > Or maybe I'm just doing something wrong. > > I have a struct implementing generics where methods return the next method to > execute. > > For tests, I wanted to make sure the returned method was the one expected, so > I was using this: > > nextStageName := > runtime.FuncForPC(reflect.ValueOf(nextStage).Pointer()).Name() > (where "nextStage" is the next method) > > Here is a simple non-generic version where I get what I expect: > https://go.dev/play/p/kimGRS7xiP2 > > result: main.(*AStruct).NextStage-fm): > > Here is probably a slightly convoluted generic version that does not: > https://go.dev/play/p/TUHUaZywki0 > > result: main.(*GenericStruct[...]).Stage.func1 > > In that version, it seem to give me the name of the method that returned the > next method. > > Any idea what is (or what I'm doing) wrong?
I'm not sure that runtime.FuncForPC is going to work here. What it is reporting is a function literal defined within the Stage method (that is what the "func1" means). What is happening is that the Stage method is returning a function literal that invokes the NextStage method. This is due to details of how generic functions are compiled, and may change from release to release. In general FuncForPC is a fairly low level operation that has no way to avoid these sorts of compilation details. I don't know if there is a way to do what you want to do. Ian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/CAOyqgcXtYuUw%2BsX1eZb8M_UtjcGLQUOFw7WAJsmg2zn3_XEkDw%40mail.gmail.com.
