, between fields, variants or arms

Built from the repository at commit a8614dc.

Each field of a class, each variant of an enum and each arm of a match stands on its own line. A ; can stand in for the line break, but a , cannot.

Why

A line break separates the members of a class or an enum and the arms of a match, as it separates statements. Fields, variants or arms written with commas would be a second way to say the same thing. The fix keeps the separator and changes the comma: a , in the middle of a line becomes ;, and a , at the end of a line or before } goes, because a ; there would be unnecessary.

Broken

class Point {
    x: i64, y: i64
}

fn main() {
    let p = Point(x: 1, y: 2)
    print(p.x + p.y)
}

What sisu says

error[E0015]: fields are separated by a line break or `;`, not `,`
 --> E0015.sisu:2:11
  |
2 |     x: i64, y: i64
  |           ^
  |
  = help: put each field on its own line
help: replace the `,` with `;`
  |
2 -     x: i64, y: i64
2 +     x: i64; y: i64
  |

sisu: 1 error
sisu: for more on a code, run `sisu explain <code>`: E0015

Fixed

class Point {
    x: i64; y: i64
}

fn main() {
    let p = Point(x: 1, y: 2)
    print(p.x + p.y)
}