is there a way to use sumtype in `switch/case` (with multiple statements)? or how can I get the `tag` and `storage`?

[mw via Digitalmars-d-learn]

https://dlang.org/library/std/sumtype.html
seems right now the `match!(...)` template only generate a 
delegate, e.g. suppose the following (silly) code:

```
bool isF(Temperature t) {
  while (true) {
    t.match!(
      (Fahrenheit f) {return true;},
      (_) {return false;}  // I want to return from the func isF, 
not the delegate!
    );
  }
}

enforce( isF(t1));
```

currently, this code will do infinite loop.


I'm wondering if the following are possible:

```
bool isF(Temperature t) {
  while (true) {
    switch (t) {
      case Fahrenheit f: /* do multiple statements of `f` */ 
return true;
      default: return false;
    }
  }
}
```

Or how can I get the `tag` and `storage` myself?

https://github.com/dlang/phobos/blob/a3f22129dd2a134338ca02b79ff0de242d7f016e/std/sumtype.d#L310

Thanks.