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rust/compiler/rustc_ast
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Jack Huey 77ac329a08
Rollup merge of #88553 - theo-lw:issue-88276, r=estebank 
Improve diagnostics for unary plus operators (#88276)

This pull request improves the diagnostics emitted on parsing a unary plus operator. See #88276.

Before:

```
error: expected expression, found `+`
 --> src/main.rs:2:13
  |
2 |     let x = +1;
  |             ^ expected expression
```

After:

```
error: leading `+` is not supported
 --> main.rs:2:13
  |
2 |     let x = +1;
  |             ^
  |             |
  |             unexpected `+`
  |             help: try removing the `+`
```
2021-09-08 12:24:16 -04:00
..
src Rollup merge of #88553 - theo-lw:issue-88276, r=estebank 2021-09-08 12:24:16 -04:00
Cargo.toml rfc3052: Remove authors field from Cargo manifests 2021-07-29 14:56:05 -07:00
README.md mv compiler to compiler/ 2020-08-30 18:45:07 +03:00

README.md

The rustc_ast 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 dev guide: