Thanks Ian for being generous with your time in answering this. I'll see if I can drum up another way to make that check work.
Cheers and have a good rest of your day. On Monday, November 7, 2022 at 10:02:28 AM UTC-8 Ian Lance Taylor wrote: > On Mon, Nov 7, 2022 at 9:24 AM John <johns...@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/ab2b391f-fd9c-4384-b349-2db97e704fd6n%40googlegroups.com.
