Detect actual span for getting unexpected token from parsing macros

[chenyukang]

Fixes #112458

[rustbot]

r? @davidtwco

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[Noratrieb]

fn main() {
    println!("{}", x-);
}

errors with

error: expected expression, found end of macro arguments
 --> src/main.rs:2:22
  |
2 |     println!("{}", x-); //~ ERROR unexpected token: `)`
  |                      ^ expected expression

which looks very nice. I would prefer it if the error here hooked into the same logic instead of trying to duplicate it

[chenyukang]

fn main() {
    println!("{}", x-);
}

errors with

error: expected expression, found end of macro arguments
 --> src/main.rs:2:22
  |
2 |     println!("{}", x-); //~ ERROR unexpected token: `)`
  |                      ^ expected expression

which looks very nice. I would prefer it if the error here hooked into the same logic instead of trying to duplicate it

expected_expression_found generates this error, but there are some different scenarios for error_unexpected_after_dot.

[davidtwco]

@bors r+

[bors]

📌 Commit 0220c0b has been approved by davidtwco

It is now in the queue for this repository.