8188f12aaa
Suggest comma when missing in macro call When missing a comma in a macro call, suggest it, regardless of position. When a macro call doesn't match any of the patterns, check if the call's token stream could be missing a comma between two idents, and if so, create a new token stream containing the comma and try to match against the macro patterns. If successful, emit the suggestion. This works on arbitrary macros, with no need of special support from the macro writers. ``` error: no rules expected the token `d` --> $DIR/missing-comma.rs:26:18 | LL | foo!(a, b, c d, e); | -^ | | | help: missing comma here ``` Follow up to #52397. |
||
|---|---|---|
| .. | ||
| attr | ||
| diagnostics | ||
| ext | ||
| parse | ||
| util | ||
| ast.rs | ||
| build.rs | ||
| Cargo.toml | ||
| codemap.rs | ||
| config.rs | ||
| diagnostic_list.rs | ||
| early_buffered_lints.rs | ||
| entry.rs | ||
| feature_gate.rs | ||
| fold.rs | ||
| json.rs | ||
| lib.rs | ||
| ptr.rs | ||
| README.md | ||
| show_span.rs | ||
| std_inject.rs | ||
| str.rs | ||
| test.rs | ||
| test_snippet.rs | ||
| tokenstream.rs | ||
| visit.rs | ||
The syntax crate contains those things concerned purely with syntax
– that is, the AST ("abstract syntax tree"), parser, pretty-printer,
lexer, macro expander, and utilities for traversing ASTs.
For more information about how these things work in rustc, see the rustc guide: