File: ensure-that-let-else-does-not-interact-with-let-chains.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (54 lines) | stat: -rw-r--r-- 1,449 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
#![feature(let_chains)]

fn main() {
    let opt = Some(1i32);

    let Some(n) = opt else {
        return;
    };
    let Some(n) = opt && n == 1 else {
    //~^ ERROR a `&&` expression cannot be directly assigned in `let...else`
    //~| ERROR mismatched types
    //~| ERROR mismatched types
        return;
    };
    let Some(n) = opt && let another = n else {
    //~^ ERROR a `&&` expression cannot be directly assigned in `let...else`
    //~| ERROR mismatched types
    //~| ERROR mismatched types
    //~| ERROR expected expression, found `let` statement
        return;
    };

    if let Some(n) = opt else {
    //~^ ERROR this `if` expression is missing a block after the condition
        return;
    };
    if let Some(n) = opt && n == 1 else {
    //~^ ERROR this `if` expression is missing a block after the condition
        return;
    };
    if let Some(n) = opt && let another = n else {
    //~^ ERROR this `if` expression is missing a block after the condition
        return;
    };

    {
        while let Some(n) = opt else {
        //~^ ERROR expected `{`, found keyword `else`
            return;
        };
    }
    {
        while let Some(n) = opt && n == 1 else {
        //~^ ERROR expected `{`, found keyword `else`
            return;
        };
    }
    {
        while let Some(n) = opt && let another = n else {
        //~^ ERROR expected `{`, found keyword `else`
            return;
        };
    }
}