diff options
Diffstat (limited to 'compiler/rustc_parse/src')
| -rw-r--r-- | compiler/rustc_parse/src/parser/item.rs | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs index 961e81989d6..678376aee4f 100644 --- a/compiler/rustc_parse/src/parser/item.rs +++ b/compiler/rustc_parse/src/parser/item.rs @@ -209,9 +209,7 @@ impl<'a> Parser<'a> { let check_pub = def == &Defaultness::Final; let mut def_ = || mem::replace(def, Defaultness::Final); - let info = if !self.look_ahead(1, |t| [token::OrOr, token::Or].contains(&t.kind)) - && self.eat_keyword_case(exp!(Use), case) - { + let info = if !self.is_use_closure() && self.eat_keyword_case(exp!(Use), case) { self.parse_use_item()? } else if self.check_fn_front_matter(check_pub, case) { // FUNCTION ITEM @@ -1279,6 +1277,21 @@ impl<'a> Parser<'a> { None } + fn is_use_closure(&self) -> bool { + if self.token.is_keyword(kw::Use) { + // Check if this could be a closure. + self.look_ahead(1, |token| { + // Move or Async here would be an error but still we're parsing a closure + let dist = + if token.is_keyword(kw::Move) || token.is_keyword(kw::Async) { 2 } else { 1 }; + + self.look_ahead(dist, |token| matches!(token.kind, token::Or | token::OrOr)) + }) + } else { + false + } + } + fn is_unsafe_foreign_mod(&self) -> bool { self.token.is_keyword(kw::Unsafe) && self.is_keyword_ahead(1, &[kw::Extern]) |