json_utils/query/
query.rs

1use super::Path;
2
3pub trait Query<'v>: Sized {
4    type ItemRef: Sized + 'v;
5    type Item: Sized;
6
7    /// Lookup for an element under the specified path.
8    /// Returns an optional reference to the sought element.
9    fn lookup<'p, P>(&'v self, path: P) -> Option<Self::ItemRef>
10    where
11        P: Path<'p>;
12
13    /// Takes the element under the specified path out of the queried node.
14    /// Returns a tuple of two items:
15    /// - optinal remainder of the queried node;
16    /// - optinal taken away element.
17    fn take<'p, P>(self, path: P) -> (Option<Self>, Option<Self::Item>)
18    where
19        P: Path<'p>;
20
21    /// Inserts an element into the queried node under the specified path.
22    /// Returns Ok(()) if inserted or Err(rejected_element) if could not perform insertion
23    ///     (e.g. path leads to a child of a non-object sub-node).
24    fn insert<'p, P>(&mut self, path: P, insertee: Self::Item) -> Result<(), Self::Item>
25    where
26        P: Path<'p>;
27}
json_utils/query/query.rs

json_utils/query/
query.rs
