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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
pub mod map;
pub use map::*;
pub mod cmp;
pub use cmp::*;
use alloc::string::{String, ToString};
use core::time::Duration;
use serde::{Deserialize, Serialize};
use crate::{
bolts::{
current_time,
tuples::{MatchName, Named},
},
Error,
};
pub trait Observer<I, S>: Named + serde::Serialize + serde::de::DeserializeOwned {
#[inline]
fn flush(&mut self) -> Result<(), Error> {
Ok(())
}
#[inline]
fn pre_exec(&mut self, _state: &mut S, _input: &I) -> Result<(), Error> {
Ok(())
}
#[inline]
fn post_exec(&mut self, _state: &mut S, _input: &I) -> Result<(), Error> {
Ok(())
}
}
pub trait ObserversTuple<I, S>: MatchName + serde::Serialize + serde::de::DeserializeOwned {
fn pre_exec_all(&mut self, state: &mut S, input: &I) -> Result<(), Error>;
fn post_exec_all(&mut self, state: &mut S, input: &I) -> Result<(), Error>;
}
impl<I, S> ObserversTuple<I, S> for () {
fn pre_exec_all(&mut self, _state: &mut S, _input: &I) -> Result<(), Error> {
Ok(())
}
fn post_exec_all(&mut self, _state: &mut S, _input: &I) -> Result<(), Error> {
Ok(())
}
}
impl<Head, Tail, I, S> ObserversTuple<I, S> for (Head, Tail)
where
Head: Observer<I, S>,
Tail: ObserversTuple<I, S>,
{
fn pre_exec_all(&mut self, state: &mut S, input: &I) -> Result<(), Error> {
self.0.pre_exec(state, input)?;
self.1.pre_exec_all(state, input)
}
fn post_exec_all(&mut self, state: &mut S, input: &I) -> Result<(), Error> {
self.0.post_exec(state, input)?;
self.1.post_exec_all(state, input)
}
}
#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct TimeObserver {
name: String,
start_time: Duration,
last_runtime: Option<Duration>,
}
impl TimeObserver {
#[must_use]
pub fn new(name: &'static str) -> Self {
Self {
name: name.to_string(),
start_time: Duration::from_secs(0),
last_runtime: None,
}
}
#[must_use]
pub fn last_runtime(&self) -> &Option<Duration> {
&self.last_runtime
}
}
impl<I, S> Observer<I, S> for TimeObserver {
fn pre_exec(&mut self, _state: &mut S, _input: &I) -> Result<(), Error> {
self.last_runtime = None;
self.start_time = current_time();
Ok(())
}
fn post_exec(&mut self, _state: &mut S, _input: &I) -> Result<(), Error> {
self.last_runtime = current_time().checked_sub(self.start_time);
Ok(())
}
}
impl Named for TimeObserver {
fn name(&self) -> &str {
&self.name
}
}
#[cfg(feature = "std")]
#[cfg(test)]
mod tests {
use crate::{
bolts::tuples::{tuple_list, tuple_list_type, Named},
observers::{StdMapObserver, TimeObserver},
};
static mut MAP: [u32; 4] = [0; 4];
#[test]
fn test_observer_serde() {
let obv = tuple_list!(
TimeObserver::new("time"),
StdMapObserver::new("map", unsafe { &mut MAP })
);
let vec = postcard::to_allocvec(&obv).unwrap();
println!("{:?}", vec);
let obv2: tuple_list_type!(TimeObserver, StdMapObserver<u32>) =
postcard::from_bytes(&vec).unwrap();
assert_eq!(obv.0.name(), obv2.0.name());
}
}