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
use std::error::Error as StdError;
use std::fmt;
#[derive(Debug)]
pub struct Error(Box<ErrorKind>);
pub fn new(kind: ErrorKind) -> Error {
Error(Box::new(kind))
}
#[derive(Debug)]
pub enum ErrorKind {
Wapc(wapc::errors::Error),
HostCallFailure(Box<dyn StdError>),
Wascap(wascap::Error),
Authorization(String),
IO(std::io::Error),
CapabilityProvider(String),
MiscHost(String),
}
impl Error {
pub fn kind(&self) -> &ErrorKind {
&self.0
}
pub fn into_kind(self) -> ErrorKind {
*self.0
}
}
impl StdError for Error {
fn description(&self) -> &str {
match *self.0 {
ErrorKind::Wapc(_) => "waPC error",
ErrorKind::IO(_) => "I/O error",
ErrorKind::HostCallFailure(_) => "Error occurred during host call",
ErrorKind::Wascap(_) => "Embedded JWT Failure",
ErrorKind::Authorization(_) => "Module authorization failure",
ErrorKind::CapabilityProvider(_) => "Capability provider failure",
ErrorKind::MiscHost(_) => "waSCC Host error",
}
}
fn cause(&self) -> Option<&dyn StdError> {
match *self.0 {
ErrorKind::Wapc(ref err) => Some(err),
ErrorKind::HostCallFailure(_) => None,
ErrorKind::Wascap(ref err) => Some(err),
ErrorKind::Authorization(_) => None,
ErrorKind::IO(ref err) => Some(err),
ErrorKind::CapabilityProvider(_) => None,
ErrorKind::MiscHost(_) => None,
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self.0 {
ErrorKind::Wapc(ref err) => write!(f, "waPC failure: {}", err),
ErrorKind::HostCallFailure(ref err) => {
write!(f, "Error occurred during host call: {}", err)
}
ErrorKind::Wascap(ref err) => write!(f, "Embedded JWT failure: {}", err),
ErrorKind::Authorization(ref err) => {
write!(f, "WebAssembly module authorization failure: {}", err)
}
ErrorKind::IO(ref err) => write!(f, "I/O error: {}", err),
ErrorKind::CapabilityProvider(ref err) => {
write!(f, "Capability provider error: {}", err)
}
ErrorKind::MiscHost(ref err) => write!(f, "waSCC Host Error: {}", err),
}
}
}
impl From<wascap::Error> for Error {
fn from(source: wascap::Error) -> Error {
Error(Box::new(ErrorKind::Wascap(source)))
}
}
impl From<wapc::errors::Error> for Error {
fn from(source: wapc::errors::Error) -> Error {
Error(Box::new(ErrorKind::Wapc(source)))
}
}
impl From<std::io::Error> for Error {
fn from(source: std::io::Error) -> Error {
Error(Box::new(ErrorKind::IO(source)))
}
}
impl From<Box<dyn StdError>> for Error {
fn from(source: Box<dyn StdError>) -> Error {
Error(Box::new(ErrorKind::HostCallFailure(source)))
}
}