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
use crate::exports::Exports;
use crate::externals::Extern;
use crate::module::Module;
use crate::store::Store;
use crate::InstantiationError;
use std::fmt;
use wasmer_engine::Resolver;
use wasmer_vm::{InstanceHandle, VMContext};
#[derive(Clone)]
pub struct Instance {
handle: InstanceHandle,
module: Module,
pub exports: Exports,
}
#[cfg(test)]
mod send_test {
use super::*;
fn is_send<T: Send>() -> bool {
true
}
#[test]
fn instance_is_send() {
assert!(is_send::<Instance>());
}
}
impl Instance {
pub fn new(module: &Module, resolver: &dyn Resolver) -> Result<Instance, InstantiationError> {
let store = module.store();
let handle = module.instantiate(resolver)?;
let exports = module
.exports()
.map(|export| {
let name = export.name().to_string();
let export = handle.lookup(&name).expect("export");
let extern_ = Extern::from_export(store, export);
(name, extern_)
})
.collect::<Exports>();
Ok(Instance {
handle,
module: module.clone(),
exports,
})
}
pub fn module(&self) -> &Module {
&self.module
}
pub fn store(&self) -> &Store {
self.module.store()
}
#[doc(hidden)]
pub fn vmctx_ptr(&self) -> *mut VMContext {
self.handle.vmctx_ptr()
}
}
impl fmt::Debug for Instance {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("Instance")
.field("exports", &self.exports)
.finish()
}
}