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Parser: Recover from using colon as path separator in imports

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This commit is contained in:
Bruno A. Muciño 2022-11-08 20:13:10 -06:00
parent 9be2f35a4c
commit aa5a3266f4
3 changed files with 56 additions and 0 deletions
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17
compiler/rustc_parse/src/parser/item.rs
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@ -971,6 +971,23 @@ impl<'a> Parser<'a> {
if self.eat(&token::ModSep) {
self.parse_use_tree_glob_or_nested()?
} else {
// Recover from using a colon as path separator.
while self.eat_noexpect(&token::Colon) {
self.struct_span_err(self.prev_token.span, "expected `::`, found `:`")
.span_suggestion_short(
self.prev_token.span,
"use double colon",
"::",
Applicability::MachineApplicable,
)
.note_once("import paths are delimited using `::`")
.emit();
// We parse the rest of the path and append it to the original prefix.
self.parse_path_segments(&mut prefix.segments, PathStyle::Mod, None)?;
prefix.span = lo.to(self.prev_token.span);
}
UseTreeKind::Simple(self.parse_rename()?, DUMMY_NODE_ID, DUMMY_NODE_ID)
}
};