Token where something else belongs

Built from the repository at commit a8614dc.

The parser expected one thing and found another. The message names both, with the thing found written as it appears in the source, or as end of line or end of file.

Why

Sisu's syntax is small, so the expected thing is nearly always one specific token or kind of name. The message reads as a sentence, such as "expected a binding name, found =".

Broken

fn main() {
    let = 1
    print(1)
}

What sisu says

error[E0011]: expected a binding name, found `=`
 --> E0011.sisu:2:9
  |
2 |     let = 1
  |         ^

sisu: 1 error
sisu: for more on a code, run `sisu explain <code>`: E0011

Fixed

fn main() {
    let x = 1
    print(x)
}