rust/compiler/rustc_expand
Nicholas Nethercote 95e519ecbf Remove NtIdent and NtLifetime.
The extra span is now recorded in the new `TokenKind::NtIdent` and
`TokenKind::NtLifetime`. These both consist of a single token, and so
there's no operator precedence problems with inserting them directly
into the token stream.

The other way to do this would be to wrap the ident/lifetime in invisible
delimiters, but there's a lot of code that assumes an interpolated
ident/lifetime fits in a single token, and changing all that code to work with
invisible delimiters would have been a pain. (Maybe it could be done in a
follow-up.)

This change might not seem like much of a win, but it's a first step toward the
much bigger and long-desired removal of `Nonterminal` and
`TokenKind::Interpolated`. That change is big and complex enough that it's
worth doing this piece separately. (Indeed, this commit is based on part of a
late commit in #114647, a prior attempt at that big and complex change.)
2024-05-14 08:19:58 +10:00
..
src Remove NtIdent and NtLifetime. 2024-05-14 08:19:58 +10:00
Cargo.toml Move some tests from rustc_expand to rustc_parse. 2024-05-06 09:06:02 +10:00
messages.ftl Move some functions from rustc_expand to rustc_builtin_macros. 2024-04-26 09:24:33 +10:00