forked from denoland/deno
-
Notifications
You must be signed in to change notification settings - Fork 0
/
errors.rs
209 lines (195 loc) · 6.06 KB
/
errors.rs
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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
//! There are many types of errors in Deno:
//! - AnyError: a generic wrapper that can encapsulate any type of error.
//! - JsError: a container for the error message and stack trace for exceptions
//! thrown in JavaScript code. We use this to pretty-print stack traces.
//! - Diagnostic: these are errors that originate in TypeScript's compiler.
//! They're similar to JsError, in that they have line numbers. But
//! Diagnostics are compile-time type errors, whereas JsErrors are runtime
//! exceptions.
use deno_core::error::AnyError;
use deno_core::serde_json;
use deno_core::url;
use deno_core::ModuleResolutionError;
use deno_fetch::reqwest;
use std::env;
use std::error::Error;
use std::io;
use std::sync::Arc;
fn get_dlopen_error_class(error: &dlopen::Error) -> &'static str {
use dlopen::Error::*;
match error {
NullCharacter(_) => "InvalidData",
OpeningLibraryError(ref e) => get_io_error_class(e),
SymbolGettingError(ref e) => get_io_error_class(e),
AddrNotMatchingDll(ref e) => get_io_error_class(e),
NullSymbol => "NotFound",
}
}
fn get_env_var_error_class(error: &env::VarError) -> &'static str {
use env::VarError::*;
match error {
NotPresent => "NotFound",
NotUnicode(..) => "InvalidData",
}
}
fn get_io_error_class(error: &io::Error) -> &'static str {
use io::ErrorKind::*;
match error.kind() {
NotFound => "NotFound",
PermissionDenied => "PermissionDenied",
ConnectionRefused => "ConnectionRefused",
ConnectionReset => "ConnectionReset",
ConnectionAborted => "ConnectionAborted",
NotConnected => "NotConnected",
AddrInUse => "AddrInUse",
AddrNotAvailable => "AddrNotAvailable",
BrokenPipe => "BrokenPipe",
AlreadyExists => "AlreadyExists",
InvalidInput => "TypeError",
InvalidData => "InvalidData",
TimedOut => "TimedOut",
Interrupted => "Interrupted",
WriteZero => "WriteZero",
UnexpectedEof => "UnexpectedEof",
Other => "Error",
WouldBlock => "WouldBlock",
// Non-exhaustive enum - might add new variants
// in the future
_ => "Error",
}
}
fn get_module_resolution_error_class(
_: &ModuleResolutionError,
) -> &'static str {
"URIError"
}
fn get_notify_error_class(error: ¬ify::Error) -> &'static str {
use notify::ErrorKind::*;
match error.kind {
Generic(_) => "Error",
Io(ref e) => get_io_error_class(e),
PathNotFound => "NotFound",
WatchNotFound => "NotFound",
InvalidConfig(_) => "InvalidData",
MaxFilesWatch => "Error",
}
}
fn get_regex_error_class(error: ®ex::Error) -> &'static str {
use regex::Error::*;
match error {
Syntax(_) => "SyntaxError",
CompiledTooBig(_) => "RangeError",
_ => "Error",
}
}
fn get_request_error_class(error: &reqwest::Error) -> &'static str {
error
.source()
.and_then(|inner_err| {
(inner_err
.downcast_ref::<io::Error>()
.map(get_io_error_class))
.or_else(|| {
inner_err
.downcast_ref::<serde_json::error::Error>()
.map(get_serde_json_error_class)
})
.or_else(|| {
inner_err
.downcast_ref::<url::ParseError>()
.map(get_url_parse_error_class)
})
})
.unwrap_or("Http")
}
fn get_serde_json_error_class(
error: &serde_json::error::Error,
) -> &'static str {
use deno_core::serde_json::error::*;
match error.classify() {
Category::Io => error
.source()
.and_then(|e| e.downcast_ref::<io::Error>())
.map(get_io_error_class)
.unwrap(),
Category::Syntax => "SyntaxError",
Category::Data => "InvalidData",
Category::Eof => "UnexpectedEof",
}
}
fn get_url_parse_error_class(_error: &url::ParseError) -> &'static str {
"URIError"
}
fn get_hyper_error_class(_error: &hyper::Error) -> &'static str {
"Http"
}
#[cfg(unix)]
pub fn get_nix_error_class(error: &nix::Error) -> &'static str {
match error {
nix::Error::ECHILD => "NotFound",
nix::Error::EINVAL => "TypeError",
nix::Error::ENOENT => "NotFound",
nix::Error::ENOTTY => "BadResource",
nix::Error::EPERM => "PermissionDenied",
nix::Error::ESRCH => "NotFound",
nix::Error::UnknownErrno => "Error",
&nix::Error::ENOTSUP => unreachable!(),
_ => "Error",
}
}
pub fn get_error_class_name(e: &AnyError) -> Option<&'static str> {
deno_core::error::get_custom_error_class(e)
.or_else(|| deno_web::get_error_class_name(e))
.or_else(|| deno_webstorage::get_not_supported_error_class_name(e))
.or_else(|| deno_websocket::get_network_error_class_name(e))
.or_else(|| {
e.downcast_ref::<dlopen::Error>()
.map(get_dlopen_error_class)
})
.or_else(|| e.downcast_ref::<hyper::Error>().map(get_hyper_error_class))
.or_else(|| {
e.downcast_ref::<Arc<hyper::Error>>()
.map(|e| get_hyper_error_class(e))
})
.or_else(|| {
e.downcast_ref::<deno_core::Canceled>().map(|e| {
let io_err: io::Error = e.to_owned().into();
get_io_error_class(&io_err)
})
})
.or_else(|| {
e.downcast_ref::<env::VarError>()
.map(get_env_var_error_class)
})
.or_else(|| e.downcast_ref::<io::Error>().map(get_io_error_class))
.or_else(|| {
e.downcast_ref::<ModuleResolutionError>()
.map(get_module_resolution_error_class)
})
.or_else(|| {
e.downcast_ref::<notify::Error>()
.map(get_notify_error_class)
})
.or_else(|| {
e.downcast_ref::<reqwest::Error>()
.map(get_request_error_class)
})
.or_else(|| e.downcast_ref::<regex::Error>().map(get_regex_error_class))
.or_else(|| {
e.downcast_ref::<serde_json::error::Error>()
.map(get_serde_json_error_class)
})
.or_else(|| {
e.downcast_ref::<url::ParseError>()
.map(get_url_parse_error_class)
})
.or_else(|| {
#[cfg(unix)]
let maybe_get_nix_error_class =
|| e.downcast_ref::<nix::Error>().map(get_nix_error_class);
#[cfg(not(unix))]
let maybe_get_nix_error_class = || Option::<&'static str>::None;
(maybe_get_nix_error_class)()
})
}