8c93a79e38
Now that features must be declared expanded source often does not compile. This adds 'pretty-expanded' to a bunch of test cases that still work.
93 lines
4.0 KiB
Rust
93 lines
4.0 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
// pretty-expanded FIXME #23616
|
|
|
|
#![feature(advanced_slice_patterns)]
|
|
|
|
fn match_vecs<'a, T>(l1: &'a [T], l2: &'a [T]) -> &'static str {
|
|
match (l1, l2) {
|
|
([], []) => "both empty",
|
|
([], [..]) | ([..], []) => "one empty",
|
|
([..], [..]) => "both non-empty"
|
|
}
|
|
}
|
|
|
|
fn match_vecs_cons<'a, T>(l1: &'a [T], l2: &'a [T]) -> &'static str {
|
|
match (l1, l2) {
|
|
([], []) => "both empty",
|
|
([], [_, ..]) | ([_, ..], []) => "one empty",
|
|
([_, ..], [_, ..]) => "both non-empty"
|
|
}
|
|
}
|
|
|
|
fn match_vecs_snoc<'a, T>(l1: &'a [T], l2: &'a [T]) -> &'static str {
|
|
match (l1, l2) {
|
|
([], []) => "both empty",
|
|
([], [.., _]) | ([.., _], []) => "one empty",
|
|
([.., _], [.., _]) => "both non-empty"
|
|
}
|
|
}
|
|
|
|
fn match_nested_vecs_cons<'a, T>(l1: Option<&'a [T]>, l2: Result<&'a [T], ()>) -> &'static str {
|
|
match (l1, l2) {
|
|
(Some([]), Ok([])) => "Some(empty), Ok(empty)",
|
|
(Some([_, ..]), Ok(_)) | (Some([_, ..]), Err(())) => "Some(non-empty), any",
|
|
(None, Ok([])) | (None, Err(())) | (None, Ok([_])) => "None, Ok(less than one element)",
|
|
(None, Ok([_, _, ..])) => "None, Ok(at least two elements)",
|
|
_ => "other"
|
|
}
|
|
}
|
|
|
|
fn match_nested_vecs_snoc<'a, T>(l1: Option<&'a [T]>, l2: Result<&'a [T], ()>) -> &'static str {
|
|
match (l1, l2) {
|
|
(Some([]), Ok([])) => "Some(empty), Ok(empty)",
|
|
(Some([.., _]), Ok(_)) | (Some([.., _]), Err(())) => "Some(non-empty), any",
|
|
(None, Ok([])) | (None, Err(())) | (None, Ok([_])) => "None, Ok(less than one element)",
|
|
(None, Ok([.., _, _])) => "None, Ok(at least two elements)",
|
|
_ => "other"
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
assert_eq!(match_vecs(&[1, 2], &[2, 3]), "both non-empty");
|
|
assert_eq!(match_vecs(&[], &[1, 2, 3, 4]), "one empty");
|
|
assert_eq!(match_vecs::<uint>(&[], &[]), "both empty");
|
|
assert_eq!(match_vecs(&[1, 2, 3], &[]), "one empty");
|
|
|
|
assert_eq!(match_vecs_cons(&[1, 2], &[2, 3]), "both non-empty");
|
|
assert_eq!(match_vecs_cons(&[], &[1, 2, 3, 4]), "one empty");
|
|
assert_eq!(match_vecs_cons::<uint>(&[], &[]), "both empty");
|
|
assert_eq!(match_vecs_cons(&[1, 2, 3], &[]), "one empty");
|
|
|
|
assert_eq!(match_vecs_snoc(&[1, 2], &[2, 3]), "both non-empty");
|
|
assert_eq!(match_vecs_snoc(&[], &[1, 2, 3, 4]), "one empty");
|
|
assert_eq!(match_vecs_snoc::<uint>(&[], &[]), "both empty");
|
|
assert_eq!(match_vecs_snoc(&[1, 2, 3], &[]), "one empty");
|
|
|
|
assert_eq!(match_nested_vecs_cons(None, Ok::<&[_], ()>(&[4_usize, 2_usize])),
|
|
"None, Ok(at least two elements)");
|
|
assert_eq!(match_nested_vecs_cons::<uint>(None, Err(())), "None, Ok(less than one element)");
|
|
assert_eq!(match_nested_vecs_cons::<bool>(Some::<&[_]>(&[]), Ok::<&[_], ()>(&[])),
|
|
"Some(empty), Ok(empty)");
|
|
assert_eq!(match_nested_vecs_cons(Some::<&[_]>(&[1]), Err(())), "Some(non-empty), any");
|
|
assert_eq!(match_nested_vecs_cons(Some::<&[_]>(&[(42, ())]), Ok::<&[_], ()>(&[(1, ())])),
|
|
"Some(non-empty), any");
|
|
|
|
assert_eq!(match_nested_vecs_snoc(None, Ok::<&[_], ()>(&[4_usize, 2_usize])),
|
|
"None, Ok(at least two elements)");
|
|
assert_eq!(match_nested_vecs_snoc::<uint>(None, Err(())), "None, Ok(less than one element)");
|
|
assert_eq!(match_nested_vecs_snoc::<bool>(Some::<&[_]>(&[]), Ok::<&[_], ()>(&[])),
|
|
"Some(empty), Ok(empty)");
|
|
assert_eq!(match_nested_vecs_snoc(Some::<&[_]>(&[1]), Err(())), "Some(non-empty), any");
|
|
assert_eq!(match_nested_vecs_snoc(Some::<&[_]>(&[(42, ())]), Ok::<&[_], ()>(&[(1, ())])),
|
|
"Some(non-empty), any");
|
|
}
|