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
use crate::IType;
use super::WType;
use super::WValue;
use std::error::Error;
#[derive(Debug)]
pub enum HostImportError {
MismatchWValues(WType, WValue),
MismatchWValuesCount,
InvalidMemoryAccess(i32, i32),
OddPointersCount(IType),
RecordTypeNotFound(u64),
}
impl Error for HostImportError {}
impl std::fmt::Display for HostImportError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
match self {
HostImportError::MismatchWValues(expected_type, found_value) => write!(
f,
"Expected {} type, but found {:?} value during interface values lifting from Wasm memory",
expected_type, found_value
),
HostImportError::MismatchWValuesCount => {
write!(f, "Not enough WValue arguments are provided from the Wasm side")
}
HostImportError::InvalidMemoryAccess(offset, size) => write!(
f,
"Invalid memory access while lifting IValues, offset {}, size {}",
offset, size
),
HostImportError::OddPointersCount(itype) => {
write!(f, "Arrays of pointers for value type {:?} contains odd count", itype)
}
HostImportError::RecordTypeNotFound(record_type_id) => {
write!(f, "Record with type id {} not found", record_type_id)
}
}
}
}