1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
use super::{
Id, User,
event::{Created, Event},
};
use crate::event::Instant;
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct History {
pub user: User,
pub created: Instant,
}
// State interface
impl History {
pub fn id(&self) -> &Id {
&self.user.id
}
// Snapshot of this user as it was when created. (Note to the future: it's okay
// if this returns a redacted or modified version of the user. If we implement
// renames by redacting the original name, then this should return the edited
// user, not the original, even if that's not how it was "as created.")
pub fn as_created(&self) -> User {
self.user.clone()
}
// Snapshot of this user, as of all events recorded in this history.
pub fn as_snapshot(&self) -> Option<User> {
self.events().collect()
}
}
// Events interface
impl History {
fn created(&self) -> Event {
Created {
instant: self.created,
user: self.user.clone(),
}
.into()
}
pub fn events(&self) -> impl Iterator<Item = Event> + use<> {
[self.created()].into_iter()
}
}
|
