mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-14 01:25:54 +00:00
23 lines
571 B
Rust
23 lines
571 B
Rust
// run-pass
|
|
// aux-build:test-macros.rs
|
|
// compile-flags: -Z span-debug
|
|
// edition:2018
|
|
//
|
|
// Tests the pretty-printing behavior of inserting `Invisible`-delimited groups
|
|
|
|
#![no_std] // Don't load unnecessary hygiene information from std
|
|
extern crate std;
|
|
|
|
extern crate test_macros;
|
|
use test_macros::print_bang_consume;
|
|
|
|
macro_rules! expand_it {
|
|
(($val1:expr) ($val2:expr)) => { expand_it!($val1 + $val2) };
|
|
($val:expr) => { print_bang_consume!("hi" $val (1 + 1)) };
|
|
}
|
|
|
|
fn main() {
|
|
expand_it!(1 + (25) + 1);
|
|
expand_it!(("hello".len()) ("world".len()));
|
|
}
|