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|
//@ run-pass
fn a() {
let x = [1];
match x {
[a] => {
assert_eq!(a, 1);
}
}
}
fn b() {
let x = [1, 2, 3];
match x {
[a, b, c @ ..] => {
assert_eq!(a, 1);
assert_eq!(b, 2);
let expected: &[_] = &[3];
assert_eq!(c, expected);
}
}
match x {
[a @ .., b, c] => {
let expected: &[_] = &[1];
assert_eq!(a, expected);
assert_eq!(b, 2);
assert_eq!(c, 3);
}
}
match x {
[a, b @ .., c] => {
assert_eq!(a, 1);
let expected: &[_] = &[2];
assert_eq!(b, expected);
assert_eq!(c, 3);
}
}
match x {
[a, b, c] => {
assert_eq!(a, 1);
assert_eq!(b, 2);
assert_eq!(c, 3);
}
}
}
fn b_slice() {
let x : &[_] = &[1, 2, 3];
match x {
&[a, b, ref c @ ..] => {
assert_eq!(a, 1);
assert_eq!(b, 2);
let expected: &[_] = &[3];
assert_eq!(c, expected);
}
_ => unreachable!()
}
match x {
&[ref a @ .., b, c] => {
let expected: &[_] = &[1];
assert_eq!(a, expected);
assert_eq!(b, 2);
assert_eq!(c, 3);
}
_ => unreachable!()
}
match x {
&[a, ref b @ .., c] => {
assert_eq!(a, 1);
let expected: &[_] = &[2];
assert_eq!(b, expected);
assert_eq!(c, 3);
}
_ => unreachable!()
}
match x {
&[a, b, c] => {
assert_eq!(a, 1);
assert_eq!(b, 2);
assert_eq!(c, 3);
}
_ => unreachable!()
}
}
fn c() {
let x = [1];
match x {
[2, ..] => panic!(),
[..] => ()
}
}
fn d() {
let x = [1, 2, 3];
let branch = match x {
[1, 1, ..] => 0,
[1, 2, 3, ..] => 1,
[1, 2, ..] => 2,
_ => 3
};
assert_eq!(branch, 1);
}
fn e() {
let x: &[isize] = &[1, 2, 3];
let a = match *x {
[1, 2] => 0,
[..] => 1,
};
assert_eq!(a, 1);
let b = match *x {
[2, ..] => 0,
[1, 2, ..] => 1,
[_] => 2,
[..] => 3
};
assert_eq!(b, 1);
let c = match *x {
[_, _, _, _, ..] => 0,
[1, 2, ..] => 1,
[_] => 2,
[..] => 3
};
assert_eq!(c, 1);
}
pub fn main() {
a();
b();
b_slice();
c();
d();
e();
}
|
