forked from rubocop/rubocop
/
regexp_node.rb
46 lines (38 loc) · 1.19 KB
/
regexp_node.rb
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
# frozen_string_literal: true
module RuboCop
module Ext
# Extensions to AST::RegexpNode for our cached parsed regexp info
module RegexpNode
ANY = Object.new
def ANY.==(_)
true
end
private_constant :ANY
class << self
attr_reader :parsed_cache
end
@parsed_cache = {}
# @return [Regexp::Expression::Root, nil]
def parsed_tree
return if interpolation?
str = content
Ext::RegexpNode.parsed_cache[str] ||= begin
Regexp::Parser.parse(str)
rescue StandardError
nil
end
end
def each_capture(named: ANY)
return enum_for(__method__, named: named) unless block_given?
parsed_tree&.traverse do |event, exp, _index|
yield(exp) if event == :enter &&
named == exp.respond_to?(:name) &&
exp.respond_to?(:capturing?) &&
exp.capturing?
end
self
end
AST::RegexpNode.include self
end
end
end