How do I get the instance of the struct for the determined command?

[peterlanoie]

I've spent many hours scouring the documentation, examples, Googleing, ChatGPTing, debuggering to exam runtime values, and looking at source code but I can't seem to find this answer.
Maybe I'm holding something wrong. (I did try using Context.Run() but had other issues.)

Given

type MyCommand struct{
   Foo  FooCmd `...`
   Bar  BarCmd `...`
}

After parsing:

var myCommand MyCommand
parser, err := kong.New(&myCommand, ...)
ctx, err = parser.Parse(...)

I can get the command text:

command := ctx.Command()

then I can do a switch on that:

switch command {
case "foo":
	doFoo(myCommand.Foo)
case "bar":
	doBar(myCommand.Bar)
}

If in my arrangement, I know that every command implements some interface, and I want to call that for any command called. .Command() gets the text of the command, but what about the object itself?
I've dug and dug, and I think that something with Context.Path might be the right direction, but I can't make heads or tales of the types there or how to get at the command instance if it's even in there. (Granted, I'm also only a month into learning Go, so my lack of success could also just be language ignorance...)

Is there a way to just get the command struct that's been resolved by the command line?

// hypothetical func `GetTheCommandInstance`
resolvedCommand := kong.GetTheCommandInstance()
   // or
resolvedCommand := ctx.GetTheCommandInstance()

resolvedCommand.MyInterfaceFunc()

Any guidance would be appreciated.
Cheers!

[alecthomas]

First off, I appreciate that you've really tried to figure it out yourself. Thank you.

You can use kong.Context.Selected() for this. Here's an example.

[peterlanoie]

@alecthomas Thanks for the speedy reply. I think this is the solution, but I haven't implemented it yet because when I tried it I got some other weird side effect that I can't yet resolve. I suspect the issue is something I'm doing wrong.