scuffle_cedar_policy/
entity_ref.rs

1use std::marker::PhantomData;
2
3use serde::ser::SerializeMap;
4
5use crate::{CedarEntity, CedarId};
6
7/// An entity ref is used by entities to refer to another entity.
8pub struct EntityUid<E> {
9    id: smol_str::SmolStr,
10    _marker: PhantomData<E>,
11}
12
13impl<E> serde::Serialize for EntityUid<E>
14where
15    E: CedarEntity,
16{
17    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
18    where
19        S: serde::Serializer,
20    {
21        let mut map = serializer.serialize_map(Some(2))?;
22
23        map.serialize_entry("type", E::TYPE_NAME.as_str())?;
24        map.serialize_entry("id", self.id.as_str())?;
25
26        map.end()
27    }
28}
29
30impl<E: CedarEntity> EntityUid<E> {
31    /// Create an entity uid by providing a id.
32    pub fn new(id: impl Into<E::Id>) -> Self {
33        Self::new_from_str(id.into().into_smol_string())
34    }
35
36    pub(crate) fn new_from_str(id: impl Into<smol_str::SmolStr>) -> Self {
37        EntityUid {
38            id: id.into(),
39            _marker: PhantomData,
40        }
41    }
42}
43
44impl<E: CedarEntity> From<EntityUid<E>> for cedar_policy::EntityUid {
45    fn from(value: EntityUid<E>) -> Self {
46        Self::from_type_name_and_id(E::entity_type_name().clone(), cedar_policy::EntityId::new(value.id))
47    }
48}
scuffle_cedar_policy/entity_ref.rs

scuffle_cedar_policy/
entity_ref.rs
