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https://github.com/rust-lang/rust
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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 {
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($fnname:ident, $arg:ident, $ty:ty, $body:block, $val:expr, $pat:pat, $res:path) =>
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({
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fn $fnname($arg: $ty) -> Option<$ty> $body
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match $fnname($val) {
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Some($pat) => {
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$res
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}
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_ => { panic!(); }
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}
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})
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}
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macro_rules! qpath {
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(path, <$type:ty as $trait:path>::$name:ident) => {
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<$type as $trait>::$name
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};
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(ty, <$type:ty as $trait:ty>::$name:ident) => {
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<$type as $trait>::$name
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//~^ ERROR expected identifier, found `!`
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};
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}
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pub fn main() {
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let _: qpath!(path, <str as ToOwned>::Owned);
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let _: qpath!(ty, <str as ToOwned>::Owned);
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let _: qpath!(ty, <str as !>::Owned);
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assert!(overly_complicated!(f, x, Option<usize>, { return Some(x); },
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Some(8), Some(y), y) == 8)
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}
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