bjoernager/rust
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Support async trait bounds in macros

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This commit is contained in:
Michael Goulet 2024-02-20 16:09:03 +00:00
parent 29f87ade9d
commit 9c8b107955
16 changed files with 229 additions and 31 deletions
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9
compiler/rustc_parse/src/parser/ty.rs
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@ -778,9 +778,10 @@ impl<'a> Parser<'a> {
|| self.check(&token::Not)
|| self.check(&token::Question)
|| self.check(&token::Tilde)
|| self.check_keyword(kw::Const)
|| self.check_keyword(kw::For)
|| self.check(&token::OpenDelim(Delimiter::Parenthesis))
|| self.check_keyword(kw::Const)
|| self.check_keyword(kw::Async)
}
/// Parses a bound according to the grammar:
@ -882,11 +883,13 @@ impl<'a> Parser<'a> {
BoundConstness::Never
};
let asyncness = if self.token.span.at_least_rust_2018() && self.eat_keyword(kw::Async) {
let asyncness = if self.token.uninterpolated_span().at_least_rust_2018()
&& self.eat_keyword(kw::Async)
{
self.sess.gated_spans.gate(sym::async_closure, self.prev_token.span);
BoundAsyncness::Async(self.prev_token.span)
} else if self.may_recover()
&& self.token.span.is_rust_2015()
&& self.token.uninterpolated_span().is_rust_2015()
&& self.is_kw_followed_by_ident(kw::Async)
{
self.bump(); // eat `async`