File: nonterminal-expansion.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb11u3
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,245,360 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (37 lines) | stat: -rw-r--r-- 748 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
//@ check-pass
//@ compile-flags: -Z span-debug
//@ aux-build:test-macros.rs

#![no_std] // Don't load unnecessary hygiene information from std
extern crate std;

#[macro_use]
extern crate test_macros;

macro_rules! pass_nonterminal {
    ($line:expr) => {
        #[print_attr_args(a, $line, b)]
        struct S;
    };
}

// `line!()` is not expanded before it's passed to the proc macro.
pass_nonterminal!(line!());

// Test case from #43860.

#[macro_export]
macro_rules! use_contract {
    ($name: ident, $path: expr) => {
        #[derive(Empty)]
        #[empty_helper(path = $path)] // OK
        pub struct $name<T, C> {
            api: T,
            contract: C,
        }
    };
}

use_contract!(ContractName, file!());

fn main() {}