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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
use crate::ops::OpCall;
use crate::serialize_op_result;
use crate::Op;
use crate::OpFn;
use crate::OpState;
use anyhow::Error;
use serde::de::DeserializeOwned;
use serde::Serialize;
use std::cell::RefCell;
use std::future::Future;
use std::rc::Rc;
pub fn void_op_sync() -> Box<OpFn> {
op_sync(|_, _: (), _: ()| Ok(()))
}
pub fn void_op_async() -> Box<OpFn> {
op_async(|_, _: (), _: ()| futures::future::ok(()))
}
pub fn op_sync<F, A, B, R>(op_fn: F) -> Box<OpFn>
where
F: Fn(&mut OpState, A, B) -> Result<R, Error> + 'static,
A: DeserializeOwned,
B: DeserializeOwned,
R: Serialize + 'static,
{
Box::new(move |state, payload| -> Op {
let result = payload
.deserialize()
.and_then(|(a, b)| op_fn(&mut state.borrow_mut(), a, b));
Op::Sync(serialize_op_result(result, state))
})
}
pub fn op_async<F, A, B, R, RV>(op_fn: F) -> Box<OpFn>
where
F: Fn(Rc<RefCell<OpState>>, A, B) -> R + 'static,
A: DeserializeOwned,
B: DeserializeOwned,
R: Future<Output = Result<RV, Error>> + 'static,
RV: Serialize + 'static,
{
Box::new(move |state, payload| -> Op {
let op_id = payload.op_id;
let pid = payload.promise_id;
let args = match payload.deserialize() {
Ok(args) => args,
Err(err) => {
return Op::Sync(serialize_op_result(Err::<(), Error>(err), state))
}
};
let (a, b) = args;
use crate::futures::FutureExt;
let fut = op_fn(state.clone(), a, b)
.map(move |result| (pid, op_id, serialize_op_result(result, state)));
Op::Async(OpCall::eager(fut))
})
}
pub fn op_async_unref<F, A, B, R, RV>(op_fn: F) -> Box<OpFn>
where
F: Fn(Rc<RefCell<OpState>>, A, B) -> R + 'static,
A: DeserializeOwned,
B: DeserializeOwned,
R: Future<Output = Result<RV, Error>> + 'static,
RV: Serialize + 'static,
{
Box::new(move |state, payload| -> Op {
let op_id = payload.op_id;
let pid = payload.promise_id;
let args = match payload.deserialize() {
Ok(args) => args,
Err(err) => {
return Op::Sync(serialize_op_result(Err::<(), Error>(err), state))
}
};
let (a, b) = args;
use crate::futures::FutureExt;
let fut = op_fn(state.clone(), a, b)
.map(move |result| (pid, op_id, serialize_op_result(result, state)));
Op::AsyncUnref(OpCall::eager(fut))
})
}
#[cfg(test)]
mod tests {
use super::*;
#[tokio::test]
async fn op_async_stack_trace() {
let mut runtime = crate::JsRuntime::new(Default::default());
async fn op_throw(
_state: Rc<RefCell<OpState>>,
msg: Option<String>,
_: (),
) -> Result<(), Error> {
assert_eq!(msg.unwrap(), "hello");
Err(crate::error::generic_error("foo"))
}
runtime.register_op("op_throw", op_async(op_throw));
runtime.sync_ops_cache();
runtime
.execute_script(
"<init>",
r#"
async function f1() {
await Deno.core.opAsync('op_throw', 'hello');
}
async function f2() {
await f1();
}
f2();
"#,
)
.unwrap();
let e = runtime.run_event_loop(false).await.unwrap_err().to_string();
println!("{}", e);
assert!(e.contains("Error: foo"));
assert!(e.contains("at async f1 (<init>:"));
assert!(e.contains("at async f2 (<init>:"));
}
}