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use syn::parse::{Error, ParseStream, Result};
use syn::TraitItemMethod;
pub fn parse(input: ParseStream) -> Result<Vec<TraitItemMethod>> {
let mut items = Vec::new();
let mut error = None;
while !input.is_empty() {
let item = input.parse::<TraitItemMethod>()?;
if let Some(body) = item.default {
let new_err = Error::new_spanned(body, "Default method can't have a body");
match &mut error {
None => error = Some(new_err),
Some(e) => e.combine(new_err),
}
} else {
items.push(item);
}
}
match error {
None => Ok(items),
Some(err) => Err(err),
}
}
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