mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 10:45:18 +00:00
4ab3e9d5b9
This test currently tests the successful paths for the `Interpolated`/`NtTy`/`Path` case in `parse_path_inner`, but it doesn't test the failure path.
34 lines
869 B
Rust
34 lines
869 B
Rust
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
|
|
//~^ ERROR expected identifier, found `!`
|
|
};
|
|
}
|
|
|
|
pub fn main() {
|
|
let _: qpath!(path, <str as ToOwned>::Owned);
|
|
let _: qpath!(ty, <str as ToOwned>::Owned);
|
|
let _: qpath!(ty, <str as !>::Owned);
|
|
|
|
assert!(overly_complicated!(f, x, Option<usize>, { return Some(x); },
|
|
Some(8), Some(y), y) == 8)
|
|
}
|