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use crate::{Dart, FormatTokens, Tokens};
use std::collections::BTreeSet;
#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Hash)]
pub enum Modifier {
Async,
Final,
}
impl Modifier {
pub fn name(&self) -> &'static str {
use self::Modifier::*;
match *self {
Async => "async",
Final => "final",
}
}
}
impl<'el> FormatTokens<'el, Dart> for Vec<Modifier> {
fn format_tokens(self, tokens: &mut Tokens<'el, Dart>) {
let mut it = self.into_iter().collect::<BTreeSet<_>>().into_iter();
if let Some(modifier) = it.next() {
tokens.append(modifier.name());
}
for modifier in it {
tokens.spacing();
tokens.append(modifier.name());
}
}
}
#[cfg(test)]
mod tests {
use super::Modifier;
use crate as genco;
use crate::dart::Tokens;
use crate::quote;
#[test]
fn test_vec() {
use self::Modifier::*;
let el: Tokens = quote!(#(vec![Async, Final]));
let s = el.to_string();
let out = s.as_ref().map(|s| s.as_str());
assert_eq!(Ok("async final"), out);
}
}