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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/pattern/rest-pat-syntactic.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/pattern/rest-pat-syntactic.rs')
-rw-r--r-- | tests/ui/pattern/rest-pat-syntactic.rs | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/tests/ui/pattern/rest-pat-syntactic.rs b/tests/ui/pattern/rest-pat-syntactic.rs new file mode 100644 index 000000000..4da5a2db7 --- /dev/null +++ b/tests/ui/pattern/rest-pat-syntactic.rs @@ -0,0 +1,73 @@ +// Here we test that `..` is allowed in all pattern locations *syntactically*. +// The semantic test is in `rest-pat-semantic-disallowed.rs`. + +// check-pass + +fn main() {} + +macro_rules! accept_pat { + ($p:pat) => {} +} + +accept_pat!(..); + +#[cfg(FALSE)] +fn rest_patterns() { + // Top level: + fn foo(..: u8) {} + let ..; + + // Box patterns: + let box ..; + //~^ WARN box pattern syntax is experimental + //~| WARN unstable syntax + + // In or-patterns: + match x { + .. | .. => {} + } + + // Ref patterns: + let &..; + let &mut ..; + + // Ident patterns: + let x @ ..; + let ref x @ ..; + let ref mut x @ ..; + + // Tuple: + let (..); // This is interpreted as a tuple pattern, not a parenthesis one. + let (..,); // Allowing trailing comma. + let (.., .., ..); // Duplicates also. + let (.., P, ..); // Including with things in between. + + // Tuple struct (same idea as for tuple patterns): + let A(..); + let A(..,); + let A(.., .., ..); + let A(.., P, ..); + + // Array/Slice (like with tuple patterns): + let [..]; + let [..,]; + let [.., .., ..]; + let [.., P, ..]; + + // Random walk to guard against special casing: + match x { + .. | + [ + ( + box .., //~ WARN box pattern syntax is experimental + &(..), + &mut .., + x @ .. + ), + ref x @ .., + ] | + ref mut x @ .. + => {} + } + //~| WARN unstable syntax +} |