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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/macros/macro-interpolation.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/ui/macros/macro-interpolation.rs b/src/test/ui/macros/macro-interpolation.rs new file mode 100644 index 000000000..35003a79a --- /dev/null +++ b/src/test/ui/macros/macro-interpolation.rs @@ -0,0 +1,33 @@ +// run-pass + +macro_rules! overly_complicated { + ($fnname:ident, $arg:ident, $ty:ty, $body:block, $val:expr, $pat:pat, $res:path) => + ({ + fn $fnname($arg: $ty) -> Option<$ty> $body + match $fnname($val) { + Some($pat) => { + $res + } + _ => { panic!(); } + } + }) + +} + +macro_rules! qpath { + (path, <$type:ty as $trait:path>::$name:ident) => { + <$type as $trait>::$name + }; + + (ty, <$type:ty as $trait:ty>::$name:ident) => { + <$type as $trait>::$name + }; +} + +pub fn main() { + let _: qpath!(path, <str as ToOwned>::Owned); + let _: qpath!(ty, <str as ToOwned>::Owned); + + assert!(overly_complicated!(f, x, Option<usize>, { return Some(x); }, + Some(8), Some(y), y) == 8) +} |