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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
use crate::command::{CommandArg, CommandItem};
use crate::{InvokeError, Params};
use state::Container;
pub struct State<'r, T: Send + Sync + 'static>(&'r T);
impl<'r, T: Send + Sync + 'static> State<'r, T> {
#[inline(always)]
pub fn inner(&self) -> &'r T {
self.0
}
}
impl<T: Send + Sync + 'static> std::ops::Deref for State<'_, T> {
type Target = T;
#[inline(always)]
fn deref(&self) -> &T {
self.0
}
}
impl<T: Send + Sync + 'static> Clone for State<'_, T> {
fn clone(&self) -> Self {
State(self.0)
}
}
impl<'r, 'de: 'r, T: Send + Sync + 'static, P: Params> CommandArg<'de, P> for State<'r, T> {
fn from_command(command: CommandItem<'de, P>) -> Result<Self, InvokeError> {
Ok(command.message.state_ref().get())
}
}
pub struct StateManager(pub(crate) Container![Send + Sync]);
impl StateManager {
pub(crate) fn new() -> Self {
Self(<Container![Send + Sync]>::new())
}
pub(crate) fn set<T: Send + Sync + 'static>(&self, state: T) -> bool {
self.0.set(state)
}
pub fn get<T: Send + Sync + 'static>(&self) -> State<'_, T> {
State(self.0.get())
}
}