-
Notifications
You must be signed in to change notification settings - Fork 32
/
macro-meta-items.rs
61 lines (55 loc) · 1.11 KB
/
macro-meta-items.rs
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
//@ run-pass
//@ compile-flags: --cfg foo --check-cfg=cfg(foo)
#![allow(dead_code)]
macro_rules! compiles_fine {
($at:meta) => {
#[cfg($at)]
static MISTYPED: () = "foo";
}
}
macro_rules! emit {
($at:meta) => {
#[cfg($at)]
static MISTYPED: &'static str = "foo";
}
}
// item
compiles_fine!(FALSE);
emit!(foo);
fn foo() {
println!("{}", MISTYPED);
}
pub fn main() {
// statement
compiles_fine!(FALSE);
emit!(FALSE);
println!("{}", MISTYPED);
}
// ferrocene-annotations: fls_xa7lp0zg1ol2
// Declarative Macros
//
// ferrocene-annotations: fls_wjldgtio5o75
// Macro Expansion
//
// ferrocene-annotations: fls_vnvt40pa48n8
// Macro Invocation
//
// ferrocene-annotations: fls_4apk1exafxii
// Macro Matching
//
// ferrocene-annotations: fls_ym00b6ewf4n3
// Macro Transcription
//
// ferrocene-annotations: fls_8nzypdu9j3ge
// Metavariables
//
// ferrocene-annotations: fls_n3ktmjqf87qb
// Rule Matching
//
// ferrocene-annotations: fls_qpx6lgapce57
// Token Matching
//
// ferrocene-annotations: fls_9kjpxri0axvg
// Weak Keywords
//
// ferrocene-annotations: um_rustc_cfg