rust/compiler/rustc_parse/src
bors 2cad938a81 Auto merge of #116447 - oli-obk:gen_fn, r=compiler-errors
Implement `gen` blocks in the 2024 edition

Coroutines tracking issue https://github.com/rust-lang/rust/issues/43122
`gen` block tracking issue https://github.com/rust-lang/rust/issues/117078

This PR implements `gen` blocks that implement `Iterator`. Most of the logic with `async` blocks is shared, and thus I renamed various types that were referring to `async` specifically.

An example usage of `gen` blocks is

```rust
fn foo() -> impl Iterator<Item = i32> {
    gen {
        yield 42;
        for i in 5..18 {
            if i.is_even() { continue }
            yield i * 2;
        }
    }
}
```

The limitations (to be resolved) of the implementation are listed in the tracking issue
2023-10-29 00:03:52 +00:00
..
lexer Format all the let chains in compiler 2023-10-13 08:59:36 +00:00
parser Auto merge of #116447 - oli-obk:gen_fn, r=compiler-errors 2023-10-29 00:03:52 +00:00
errors.rs Reserve gen keyword for gen {} blocks and gen fn in 2024 edition 2023-10-26 06:49:17 +00:00
lib.rs Use relative positions inside a SourceFile. 2023-09-03 12:56:10 +00:00
validate_attr.rs Remove MacDelimiter. 2023-08-03 09:03:30 +10:00