| 1 | //! Helper module for exporting the `pattern_type` macro |
|---|---|
| 2 | |
| 3 | /// Creates a pattern type. |
| 4 | /// ```ignore (cannot test this from within core yet) |
| 5 | /// type Positive = std::pat::pattern_type!(i32 is 1..); |
| 6 | /// ``` |
| 7 | #[macro_export] |
| 8 | #[rustc_builtin_macro(pattern_type)] |
| 9 | #[unstable(feature = "core_pattern_type", issue = "none")] |
| 10 | macro_rules! pattern_type { |
| 11 | ($($arg:tt)*) => { |
| 12 | /* compiler built-in */ |
| 13 | }; |
| 14 | } |
| 15 |