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
|
use derive_deftly::{define_derive_deftly, derive_deftly_adhoc, Deftly};
define_derive_deftly! {
/// This is fundamentally misconceived
FieldNames expect expr:
[ $( stringify!($fname), ) ]
}
#[derive(Deftly)]
#[derive_deftly(FieldNames)]
#[derive_deftly_adhoc]
struct DataType {}
derive_deftly_adhoc! {
// This is going to be a syntax error, since it expands to an expr
DataType expect expr:
${for fields { 1 + }} 0
}
derive_deftly_adhoc! {
DataType expect items:
${ignore $fname}
}
define_derive_deftly! {
FieldOutsideRepeatGroup:
[ stringify!($fname), ] // not in a repeat group at all
}
define_derive_deftly! {
FieldInVariantsRepeatGroup:
[ ${for variants { stringify!($fname), }} ] // insufficient repeat depth
}
#[derive(Deftly)]
#[derive_deftly(FieldOutsideRepeatGroup, FieldInVariantsRepeatGroup)]
struct Struct;
#[derive(Deftly)]
#[derive_deftly(FieldOutsideRepeatGroup, FieldInVariantsRepeatGroup)]
enum Enum {
Variant,
}
fn main() {}
|
