This change adds a FileSet field to Package, and uses it in
preference to Snapshot.FileSet wherever that is appropriate:
all but a handful of places.
For now, they must continue to refer to the same instance,
but once we do away with the Snapshot's cache of parsed files,
there will be no need for a global FileSet and each Package
will be able to create its own. (Some care will be required
to make sure it is always clear which package owns each
each token.Pos/ast.Node/types.Object when there are several
in play.)
Updates golang/go#56291
Change-Id: I017eb794ffb737550da6ae88462d23a8f5c1e1e7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/448377
Run-TryBot: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>