Cargo.toml
lib.rs
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| [package] | |
| name = "foo" | |
| version = "0.1.0" | |
| edition = "2021" | |
| # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html | |
| [dependencies] |
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| /// My `foo` macro! | |
| /// | |
| /// ```compile_fail | |
| /// # #[macro_use] extern crate foo; | |
| /// # fn main() { | |
| /// foo!(); | |
| /// # } | |
| /// ``` | |
| #[macro_export] | |
| macro_rules! foo { | |
| () => { | |
| // invalid syntax | |
| if{} | |
| } | |
| } |