arch_pkg_text/srcinfo/misc/
derive_query_mut.rs

1use super::ReuseAdvice;
2use crate::srcinfo::{FieldName, Query, QueryMut, QueryRawTextItem};
3
4/// Wrapper struct to permit [`QueryMut`] on a struct that only implements [`Query`].
5#[derive(Debug, Default, Clone, Copy)]
6pub struct DeriveQueryMut<Querier: ?Sized>(pub Querier);
7
8impl<'a, Querier: Query<'a> + ?Sized> Query<'a> for DeriveQueryMut<Querier> {
9    fn query_raw_text(&self, field_name: FieldName) -> impl Iterator<Item = QueryRawTextItem<'a>> {
10        self.0.query_raw_text(field_name)
11    }
12}
13
14impl<'a, Querier: Query<'a> + ?Sized> QueryMut<'a> for DeriveQueryMut<Querier> {
15    fn query_raw_text_mut(
16        &mut self,
17        field_name: FieldName,
18    ) -> impl Iterator<Item = QueryRawTextItem<'a>> {
19        self.query_raw_text(field_name)
20    }
21}
22
23impl<'a, Querier: Query<'a> + ReuseAdvice + ?Sized> ReuseAdvice for DeriveQueryMut<Querier> {
24    type ShouldReuse = Querier::ShouldReuse;
25}