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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/macros/macro-of-higher-order.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/macros/macro-of-higher-order.rs')
-rw-r--r-- | src/test/ui/macros/macro-of-higher-order.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/macros/macro-of-higher-order.rs b/src/test/ui/macros/macro-of-higher-order.rs new file mode 100644 index 000000000..ec551d6cd --- /dev/null +++ b/src/test/ui/macros/macro-of-higher-order.rs @@ -0,0 +1,22 @@ +// run-pass + +macro_rules! higher_order { + (subst $lhs:tt => $rhs:tt) => ({ + macro_rules! anon { $lhs => $rhs } + anon!(1_usize, 2_usize, "foo") + }); +} + +macro_rules! outer { + ($x:expr; $fragment:ident) => { + macro_rules! inner { ($y:$fragment) => { $x + $y } } + } +} + +fn main() { + let val = higher_order!(subst ($x:expr, $y:expr, $foo:expr) => (($x + $y, $foo))); + assert_eq!(val, (3, "foo")); + + outer!(2; expr); + assert_eq!(inner!(3), 5); +} |