63bc23b545
This CL adds Ident, which will eventually replace *Name and *PkgName within the AST for representing uses of declared names. (Originally, I intended to call it "IdentExpr", but neither go/ast nor cmd/compile/internal/syntax include the "Expr" suffix for their respective types.) To start, this CL converts two uses of *Name to *Ident: the tag identifier in a TypeSwitchGuard (which doesn't actually declare a variable by itself), and the not-yet-known placeholder ONONAME returned by oldname to stand-in for identifiers that might be declared later in the package. The TypeSwitchGuard's Name's Used flag was previously used for detecting whether none of the per-clause variables were used. To avoid bloating all Idents for this rare use, a "Used" bool is added to TypeSwitchGuard instead. Eventually it could maybe be packed into miniNode.bits, but for now this is good enough. Passes buildall w/ toolstash -cmp. Change-Id: I393284d86757cbbebd26e1320c7354e2bdcb30b0 Reviewed-on: https://go-review.googlesource.com/c/go/+/276113 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> |
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