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require 'spec_helper'
RSpec.describe(Regexp::Token) do
specify('#offset') do
regexp = /ab?cd/
tokens = RL.lex(regexp)
expect(tokens[1].text).to eq 'b'
expect(tokens[1].offset).to eq [1, 2]
expect(tokens[2].text).to eq '?'
expect(tokens[2].offset).to eq [2, 3]
expect(tokens[3].text).to eq 'cd'
expect(tokens[3].offset).to eq [3, 5]
end
specify('#length') do
regexp = /abc?def/
tokens = RL.lex(regexp)
expect(tokens[0].text).to eq 'ab'
expect(tokens[0].length).to eq 2
expect(tokens[1].text).to eq 'c'
expect(tokens[1].length).to eq 1
expect(tokens[2].text).to eq '?'
expect(tokens[2].length).to eq 1
expect(tokens[3].text).to eq 'def'
expect(tokens[3].length).to eq 3
end
specify('#to_h') do
regexp = /abc?def/
tokens = RL.lex(regexp)
expect(tokens[0].text).to eq 'ab'
expect(tokens[0].to_h).to eq type: :literal, token: :literal, text: 'ab', ts: 0, te: 2, level: 0, set_level: 0, conditional_level: 0
expect(tokens[2].text).to eq '?'
expect(tokens[2].to_h).to eq type: :quantifier, token: :zero_or_one, text: '?', ts: 3, te: 4, level: 0, set_level: 0, conditional_level: 0
end
specify('#next') do
regexp = /a+b?c*d{2,3}/
tokens = RL.lex(regexp)
a = tokens.first
expect(a.text).to eq 'a'
plus = a.next
expect(plus.text).to eq '+'
b = plus.next
expect(b.text).to eq 'b'
interval = tokens.last
expect(interval.text).to eq '{2,3}'
expect(interval.next).to be_nil
end
specify('#previous') do
regexp = /a+b?c*d{2,3}/
tokens = RL.lex(regexp)
interval = tokens.last
expect(interval.text).to eq '{2,3}'
d = interval.previous
expect(d.text).to eq 'd'
star = d.previous
expect(star.text).to eq '*'
c = star.previous
expect(c.text).to eq 'c'
a = tokens.first
expect(a.text).to eq 'a'
expect(a.previous).to be_nil
end
end
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