1
|
var prr = require('prr')
|
2
|
|
3
|
function init (type, message, cause) {
|
4
|
if (!!message && typeof message != 'string') {
|
5
|
message = message.message || message.name
|
6
|
}
|
7
|
prr(this, {
|
8
|
type : type
|
9
|
, name : type
|
10
|
// can be passed just a 'cause'
|
11
|
, cause : typeof message != 'string' ? message : cause
|
12
|
, message : message
|
13
|
}, 'ewr')
|
14
|
}
|
15
|
|
16
|
// generic prototype, not intended to be actually used - helpful for `instanceof`
|
17
|
function CustomError (message, cause) {
|
18
|
Error.call(this)
|
19
|
if (Error.captureStackTrace)
|
20
|
Error.captureStackTrace(this, this.constructor)
|
21
|
init.call(this, 'CustomError', message, cause)
|
22
|
}
|
23
|
|
24
|
CustomError.prototype = new Error()
|
25
|
|
26
|
function createError (errno, type, proto) {
|
27
|
var err = function (message, cause) {
|
28
|
init.call(this, type, message, cause)
|
29
|
//TODO: the specificity here is stupid, errno should be available everywhere
|
30
|
if (type == 'FilesystemError') {
|
31
|
this.code = this.cause.code
|
32
|
this.path = this.cause.path
|
33
|
this.errno = this.cause.errno
|
34
|
this.message =
|
35
|
(errno.errno[this.cause.errno]
|
36
|
? errno.errno[this.cause.errno].description
|
37
|
: this.cause.message)
|
38
|
+ (this.cause.path ? ' [' + this.cause.path + ']' : '')
|
39
|
}
|
40
|
Error.call(this)
|
41
|
if (Error.captureStackTrace)
|
42
|
Error.captureStackTrace(this, err)
|
43
|
}
|
44
|
err.prototype = !!proto ? new proto() : new CustomError()
|
45
|
return err
|
46
|
}
|
47
|
|
48
|
module.exports = function (errno) {
|
49
|
var ce = function (type, proto) {
|
50
|
return createError(errno, type, proto)
|
51
|
}
|
52
|
return {
|
53
|
CustomError : CustomError
|
54
|
, FilesystemError : ce('FilesystemError')
|
55
|
, createError : ce
|
56
|
}
|
57
|
}
|