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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:57:31 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 03:57:31 +0000 |
commit | dc0db358abe19481e475e10c32149b53370f1a1c (patch) | |
tree | ab8ce99c4b255ce46f99ef402c27916055b899ee /tests/ui/rfcs/rfc-2497-if-let-chains/then-else-blocks.rs | |
parent | Releasing progress-linux version 1.71.1+dfsg1-2~progress7.99u1. (diff) | |
download | rustc-dc0db358abe19481e475e10c32149b53370f1a1c.tar.xz rustc-dc0db358abe19481e475e10c32149b53370f1a1c.zip |
Merging upstream version 1.72.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/rfcs/rfc-2497-if-let-chains/then-else-blocks.rs')
-rw-r--r-- | tests/ui/rfcs/rfc-2497-if-let-chains/then-else-blocks.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/then-else-blocks.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/then-else-blocks.rs new file mode 100644 index 000000000..e061174f6 --- /dev/null +++ b/tests/ui/rfcs/rfc-2497-if-let-chains/then-else-blocks.rs @@ -0,0 +1,49 @@ +// run-pass + +#![feature(if_let_guard, let_chains)] + +fn check_if_let(opt: Option<Option<Option<i32>>>, value: i32) -> bool { + if let Some(first) = opt + && let Some(second) = first + && let Some(third) = second + && third == value + { + true + } + else { + false + } +} + +fn check_let_guard(opt: Option<Option<Option<i32>>>, value: i32) -> bool { + match opt { + Some(first) if let Some(second) = first && let Some(third) = second && third == value => { + true + } + _ => { + false + } + } +} + +fn check_while_let(opt: Option<Option<Option<i32>>>, value: i32) -> bool { + while let Some(first) = opt + && let Some(second) = first + && let Some(third) = second + && third == value + { + return true; + } + false +} + +fn main() { + assert_eq!(check_if_let(Some(Some(Some(1))), 1), true); + assert_eq!(check_if_let(Some(Some(Some(1))), 9), false); + + assert_eq!(check_let_guard(Some(Some(Some(1))), 1), true); + assert_eq!(check_let_guard(Some(Some(Some(1))), 9), false); + + assert_eq!(check_while_let(Some(Some(Some(1))), 1), true); + assert_eq!(check_while_let(Some(Some(Some(1))), 9), false); +} |