blob: 4b8c8ab063aaabbd328232f692f0a89ae80c139c (
plain) (
blame)
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
|
require "strscan"
module ActionDispatch
module Journey # :nodoc:
class Scanner # :nodoc:
def initialize
@ss = nil
end
def scan_setup(str)
@ss = StringScanner.new(str)
end
def eos?
@ss.eos?
end
def pos
@ss.pos
end
def pre_match
@ss.pre_match
end
def next_token
return if @ss.eos?
until token = scan || @ss.eos?; end
token
end
private
def scan
case
# /
when text = @ss.scan(/\//)
[:SLASH, text]
when text = @ss.scan(/\*\w+/)
[:STAR, text]
when text = @ss.scan(/(?<!\\)\(/)
[:LPAREN, text]
when text = @ss.scan(/(?<!\\)\)/)
[:RPAREN, text]
when text = @ss.scan(/\|/)
[:OR, text]
when text = @ss.scan(/\./)
[:DOT, text]
when text = @ss.scan(/(?<!\\):\w+/)
[:SYMBOL, text]
when text = @ss.scan(/(?:[\w%\-~!$&'*+,;=@]|\\:|\\\(|\\\))+/)
[:LITERAL, text.tr('\\', "")]
# any char
when text = @ss.scan(/./)
[:LITERAL, text]
end
end
end
end
end
|
