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require 'spec_helper'
RSpec.describe('Meta scanning') do
include_examples 'scan', /abc??|def*+|ghi+/,
0 => [:literal, :literal, 'abc', 0, 3],
1 => [:quantifier, :zero_or_one_reluctant, '??', 3, 5],
2 => [:meta, :alternation, '|', 5, 6],
3 => [:literal, :literal, 'def', 6, 9],
4 => [:quantifier, :zero_or_more_possessive, '*+', 9, 11],
5 => [:meta, :alternation, '|', 11, 12]
include_examples 'scan', /(a\|b)|(c|d)\|(e[|]f)/,
2 => [:escape, :alternation, '\|', 2, 4],
5 => [:meta, :alternation, '|', 6, 7],
8 => [:meta, :alternation, '|', 9, 10],
11 => [:escape, :alternation, '\|', 12, 14],
15 => [:literal, :literal, '|', 17, 18]
end
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