Axel, On Tue Sep 21, 2021 at 15:56 CET, Axel Wagner wrote: > The underlying type is defined recursively > <https://golang.org/ref/spec#Types>: > > Each type T has an underlying type: If T is one of the predeclared > boolean, > > numeric, or string types, or a type literal, the corresponding underlying > > type is T itself. Otherwise, T's underlying type is *the underlying type > > of the type* to which T refers in its type declaration. > > > (emphasis mine). From a type-system perspective, there is no real > difference between these two types. The Go type system treats them the > same. > > So, if you need to differentiate between them, you have to go back from > the > types-level to the AST level. That's unfortunately a bit difficult, > AFAIK. > I think you have to use the `token.Pos` of the `*TypeName` and then > traverse the `ast.File`s of the package until you find that position. > That > should give you an `ast.TypeSpec`, which can tell you if its `Type` > field > is an identifier, or a type literal. Not super ergonomic, but AFAIK the > only way.
ok, thanks for the quick answer. cheers, -s -- 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/CEFMIPKOYLY5.3L1WQ08C5LPPP%40clrinfopc42.
