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
|
# frozen_string_literal: true
class Regexp::Scanner
# Base for all scanner validation errors
class ValidationError < ScannerError
# Centralizes and unifies the handling of validation related errors.
def self.for(type, problem, reason = nil)
types.fetch(type).new(problem, reason)
end
def self.types
@types ||= {
backref: InvalidBackrefError,
group: InvalidGroupError,
group_option: InvalidGroupOption,
posix_class: UnknownPosixClassError,
property: UnknownUnicodePropertyError,
sequence: InvalidSequenceError,
}
end
end
# Invalid sequence format. Used for escape sequences, mainly.
class InvalidSequenceError < ValidationError
def initialize(what = 'sequence', where = '')
super "Invalid #{what} at #{where}"
end
end
# Invalid group. Used for named groups.
class InvalidGroupError < ValidationError
def initialize(what, reason)
super "Invalid #{what}, #{reason}."
end
end
# Invalid groupOption. Used for inline options.
# TODO: should become InvalidGroupOptionError in v3.0.0 for consistency
class InvalidGroupOption < ValidationError
def initialize(option, text)
super "Invalid group option #{option} in #{text}"
end
end
# Invalid back reference. Used for name a number refs/calls.
class InvalidBackrefError < ValidationError
def initialize(what, reason)
super "Invalid back reference #{what}, #{reason}"
end
end
# The property name was not recognized by the scanner.
class UnknownUnicodePropertyError < ValidationError
def initialize(name, _)
super "Unknown unicode character property name #{name}"
end
end
# The POSIX class name was not recognized by the scanner.
class UnknownPosixClassError < ValidationError
def initialize(text, _)
super "Unknown POSIX class #{text}"
end
end
end
|
