mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 17:30:16 +01:00
40 lines
766 B
Plaintext
40 lines
766 B
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
|
// Exceptions. See /LICENSE for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
|
choice Ints {
|
|
None,
|
|
One(Int),
|
|
Two(Int,Int)
|
|
}
|
|
|
|
fn main() -> Int {
|
|
var auto: x = Ints.None();
|
|
var auto: y = Ints.One(42);
|
|
var auto: n = 0;
|
|
match (y) {
|
|
case Ints.None =>
|
|
n = n + 2;
|
|
case Ints.One(auto: x) =>
|
|
n = x + 1 - 42;
|
|
case Ints.Two(auto: a, auto: b) =>
|
|
n = 2;
|
|
}
|
|
match (x) {
|
|
case Ints.One(auto: x) =>
|
|
n = x + 2;
|
|
case Ints.None() =>
|
|
n = n - 1;
|
|
case Ints.Two(auto: x, auto: y) =>
|
|
n = 5;
|
|
}
|
|
return n;
|
|
}
|
|
|
|
// Test some alternate syntaxes
|
|
choice MoreInts {
|
|
None(),
|
|
One(Int),
|
|
Two(Int,Int),
|
|
}
|