diff options
Diffstat (limited to 'src/libsyntax/parse/parser.rs')
| -rw-r--r-- | src/libsyntax/parse/parser.rs | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs index c1819307928..0b03429ea2e 100644 --- a/src/libsyntax/parse/parser.rs +++ b/src/libsyntax/parse/parser.rs @@ -3916,6 +3916,10 @@ impl<'a> Parser<'a> { self.look_ahead(1, |t| t.is_ident() && !t.is_reserved_ident()) } + fn is_crate_vis(&self) -> bool { + self.token.is_keyword(keywords::Crate) && self.look_ahead(1, |t| t != &token::ModSep) + } + fn eat_auto_trait(&mut self) -> bool { if self.token.is_keyword(keywords::Auto) && self.look_ahead(1, |t| t.is_keyword(keywords::Trait)) @@ -4026,10 +4030,15 @@ impl<'a> Parser<'a> { node: StmtKind::Item(macro_def), span: lo.to(self.prev_span), } - // Starts like a simple path, but not a union item. + // Starts like a simple path, but not a union item or item with `crate` visibility. + // Our goal here is to parse an arbitrary path `a::b::c` but not something that starts + // like a path (1 token), but it fact not a path. + // `union::b::c` - path, `union U { ... }` - not a path. + // `crate::b::c` - path, `crate struct S;` - not a path. } else if self.token.is_path_start() && !self.token.is_qpath_start() && - !self.is_union_item() { + !self.is_union_item() && + !self.is_crate_vis() { let pth = self.parse_path(PathStyle::Expr)?; if !self.eat(&token::Not) { @@ -5399,7 +5408,9 @@ impl<'a> Parser<'a> { pub fn parse_visibility(&mut self, can_take_tuple: bool) -> PResult<'a, Visibility> { maybe_whole!(self, NtVis, |x| x); - if self.eat_keyword(keywords::Crate) { + self.expected_tokens.push(TokenType::Keyword(keywords::Crate)); + if self.is_crate_vis() { + self.bump(); // `crate` return Ok(Visibility::Crate(self.prev_span, CrateSugar::JustCrate)); } |