rust/compiler/rustc_parse/src
Matthias Krüger ed45c1187f
Rollup merge of #137281 - estebank:doc-comment-syntax-error, r=compiler-errors
Tweak "expected ident" parse error to avoid talking about doc comments

When encountering a doc comment without an identifier after, we'd unconditionally state "this doc comment doesn't document anything", swallowing the *actual* error which is that the thing *after* the doc comment wasn't expected. Added a check that the found token is something that "conceptually" closes the previous item before emitting that error, otherwise just complain about the missing identifier.

In both of the following cases, the syntax error follows a doc comment:
```
error: expected identifier, found keyword `Self`
  --> $DIR/doc-before-bad-variant.rs:4:5
   |
LL | enum TestEnum {
   |      -------- while parsing this enum
...
LL |     Self,
   |     ^^^^ expected identifier, found keyword
   |
   = help: enum variants can be `Variant`, `Variant = <integer>`, `Variant(Type, ..., TypeN)` or `Variant { fields: Types }`
```
```
error: expected identifier, found `<`
  --> $DIR/doc-before-syntax-error.rs:2:1
   |
LL | <>
   | ^ expected identifier
```

Fix #71982.
2025-02-20 00:55:16 +01:00
..
lexer replaces few consts with statics to reduce readonly section 2025-01-28 17:38:22 +03:00
parser Rollup merge of #137281 - estebank:doc-comment-syntax-error, r=compiler-errors 2025-02-20 00:55:16 +01:00
errors.rs Try to recover from path sep error in parser 2025-02-15 07:44:20 +08:00
lib.rs tree-wide: parallel: Fully removed all Lrc, replaced with Arc 2025-02-03 13:25:57 +03:00
validate_attr.rs Properly record metavar spans for other expansions other than TT 2024-12-21 20:37:27 +00:00