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require 'spec_helper'
RSpec.describe('Conditional lexing') do
include_examples 'lex', /(?<A>a)(?(<A>)b|c)/,
3 => [:conditional, :open, '(?', 7, 9, 0, 0, 0],
4 => [:conditional, :condition, '(<A>)', 9, 14, 0, 0, 1],
6 => [:conditional, :separator, '|', 15, 16, 0, 0, 1],
8 => [:conditional, :close, ')', 17, 18, 0, 0, 0]
include_examples 'lex', /((?<A>a)(?<B>(?(<A>)b|((?(<B>)[e-g]|[h-j])))))/,
0 => [:group, :capture, '(', 0, 1, 0, 0, 0],
1 => [:group, :named, '(?<A>', 1, 6, 1, 0, 0],
5 => [:conditional, :open, '(?', 13, 15, 2, 0, 0],
6 => [:conditional, :condition, '(<A>)', 15, 20, 2, 0, 1],
8 => [:conditional, :separator, '|', 21, 22, 2, 0, 1],
10 => [:conditional, :open, '(?', 23, 25, 3, 0, 1],
11 => [:conditional, :condition, '(<B>)', 25, 30, 3, 0, 2],
12 => [:set, :open, '[', 30, 31, 3, 0, 2],
13 => [:literal, :literal, 'e', 31, 32, 3, 1, 2],
14 => [:set, :range, '-', 32, 33, 3, 1, 2],
15 => [:literal, :literal, 'g', 33, 34, 3, 1, 2],
16 => [:set, :close, ']', 34, 35, 3, 0, 2],
17 => [:conditional, :separator, '|', 35, 36, 3, 0, 2],
23 => [:conditional, :close, ')', 41, 42, 3, 0, 1],
25 => [:conditional, :close, ')', 43, 44, 2, 0, 0],
26 => [:group, :close, ')', 44, 45, 1, 0, 0],
27 => [:group, :close, ')', 45, 46, 0, 0, 0]
include_examples 'lex', /(a(b(c)))(?(1)(?(2)(?(3)d|e))|(?(3)(?(2)f|g)|(?(1)f|g)))/,
9 => [:conditional, :open, '(?', 9, 11, 0, 0, 0],
10 => [:conditional, :condition, '(1)', 11, 14, 0, 0, 1],
11 => [:conditional, :open, '(?', 14, 16, 0, 0, 1],
12 => [:conditional, :condition, '(2)', 16, 19, 0, 0, 2],
13 => [:conditional, :open, '(?', 19, 21, 0, 0, 2],
14 => [:conditional, :condition, '(3)', 21, 24, 0, 0, 3],
16 => [:conditional, :separator, '|', 25, 26, 0, 0, 3],
18 => [:conditional, :close, ')', 27, 28, 0, 0, 2],
19 => [:conditional, :close, ')', 28, 29, 0, 0, 1],
20 => [:conditional, :separator, '|', 29, 30, 0, 0, 1],
21 => [:conditional, :open, '(?', 30, 32, 0, 0, 1],
22 => [:conditional, :condition, '(3)', 32, 35, 0, 0, 2],
23 => [:conditional, :open, '(?', 35, 37, 0, 0, 2],
24 => [:conditional, :condition, '(2)', 37, 40, 0, 0, 3],
26 => [:conditional, :separator, '|', 41, 42, 0, 0, 3],
28 => [:conditional, :close, ')', 43, 44, 0, 0, 2],
29 => [:conditional, :separator, '|', 44, 45, 0, 0, 2],
30 => [:conditional, :open, '(?', 45, 47, 0, 0, 2],
31 => [:conditional, :condition, '(1)', 47, 50, 0, 0, 3],
33 => [:conditional, :separator, '|', 51, 52, 0, 0, 3],
35 => [:conditional, :close, ')', 53, 54, 0, 0, 2],
36 => [:conditional, :close, ')', 54, 55, 0, 0, 1],
37 => [:conditional, :close, ')', 55, 56, 0, 0, 0]
end
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