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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/or-patterns/search-via-bindings.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/or-patterns/search-via-bindings.rs')
-rw-r--r-- | tests/ui/or-patterns/search-via-bindings.rs | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/tests/ui/or-patterns/search-via-bindings.rs b/tests/ui/or-patterns/search-via-bindings.rs new file mode 100644 index 000000000..d98606ded --- /dev/null +++ b/tests/ui/or-patterns/search-via-bindings.rs @@ -0,0 +1,63 @@ +// Check that we expand multiple or-patterns from left to right. + +// run-pass + +fn search(target: (bool, bool, bool)) -> u32 { + let x = ((false, true), (false, true), (false, true)); + let mut guard_count = 0; + match x { + ((a, _) | (_, a), (b @ _, _) | (_, b @ _), (c @ false, _) | (_, c @ true)) + if { + guard_count += 1; + (a, b, c) == target + } => + { + guard_count + } + _ => unreachable!(), + } +} + +// Equivalent to the above code, but hopefully easier to understand. +fn search_old_style(target: (bool, bool, bool)) -> u32 { + let x = ((false, true), (false, true), (false, true)); + let mut guard_count = 0; + match x { + ((a, _), (b @ _, _), (c @ false, _)) + | ((a, _), (b @ _, _), (_, c @ true)) + | ((a, _), (_, b @ _), (c @ false, _)) + | ((a, _), (_, b @ _), (_, c @ true)) + | ((_, a), (b @ _, _), (c @ false, _)) + | ((_, a), (b @ _, _), (_, c @ true)) + | ((_, a), (_, b @ _), (c @ false, _)) + | ((_, a), (_, b @ _), (_, c @ true)) + if { + guard_count += 1; + (a, b, c) == target + } => + { + guard_count + } + _ => unreachable!(), + } +} + +fn main() { + assert_eq!(search((false, false, false)), 1); + assert_eq!(search((false, false, true)), 2); + assert_eq!(search((false, true, false)), 3); + assert_eq!(search((false, true, true)), 4); + assert_eq!(search((true, false, false)), 5); + assert_eq!(search((true, false, true)), 6); + assert_eq!(search((true, true, false)), 7); + assert_eq!(search((true, true, true)), 8); + + assert_eq!(search_old_style((false, false, false)), 1); + assert_eq!(search_old_style((false, false, true)), 2); + assert_eq!(search_old_style((false, true, false)), 3); + assert_eq!(search_old_style((false, true, true)), 4); + assert_eq!(search_old_style((true, false, false)), 5); + assert_eq!(search_old_style((true, false, true)), 6); + assert_eq!(search_old_style((true, true, false)), 7); + assert_eq!(search_old_style((true, true, true)), 8); +} |