43 lines
845 B
Rust
43 lines
845 B
Rust
use darling::{FromDeriveInput, FromMeta};
|
|
|
|
fn parse<T: FromDeriveInput>(src: &str) -> T {
|
|
let ast = syn::parse_str(src).unwrap();
|
|
FromDeriveInput::from_derive_input(&ast).unwrap()
|
|
}
|
|
|
|
#[derive(FromMeta, PartialEq, Eq, Debug)]
|
|
enum Volume {
|
|
Whisper,
|
|
Talk,
|
|
Shout,
|
|
}
|
|
|
|
#[derive(FromDeriveInput)]
|
|
#[darling(attributes(speak))]
|
|
struct SpeakingOptions<T: Default, U> {
|
|
max_volume: U,
|
|
#[darling(skip)]
|
|
#[allow(dead_code)]
|
|
additional_data: T,
|
|
}
|
|
|
|
#[derive(Default)]
|
|
struct Phoneme {
|
|
#[allow(dead_code)]
|
|
first: String,
|
|
}
|
|
|
|
#[test]
|
|
fn skipped_field() {
|
|
let parsed: SpeakingOptions<Phoneme, Volume> = parse(
|
|
r#"
|
|
#[derive(Speak)]
|
|
#[speak(max_volume = "shout")]
|
|
enum HtmlElement {
|
|
Div(String)
|
|
}
|
|
"#,
|
|
);
|
|
assert_eq!(parsed.max_volume, Volume::Shout);
|
|
}
|