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Fix MultiplicityUnit#to_nfa

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This commit is contained in:
Josh Holtrop 2021-05-25 16:59:22 -04:00
parent e7f8c3726c
commit 538e360cb3
1 changed files with 13 additions and 13 deletions
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24
lib/imbecile/regex/unit.rb
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@ -132,26 +132,26 @@ module Imbecile
end
def to_nfa
nfa = NFA.new
last_state = nfa.start_state
unit_nfa = nil
@min_count.times do
unit_nfa = @unit.to_nfa
nfa.start_state.add_transition(nil, unit_nfa.start_state)
if @min_count == 0
nfa.start_state.add_transition(nil, nfa.end_state)
else
(@min_count - 1).times do
prev_nfa = unit_nfa
unit_nfa = @unit.to_nfa
prev_nfa.end_state.add_transition(nil, unit_nfa.start_state)
last_state.add_transition(nil, unit_nfa.start_state)
last_state = unit_nfa.end_state
end
end
unit_nfa.end_state.add_transition(nil, nfa.end_state)
last_state.add_transition(nil, nfa.end_state)
if @max_count.nil?
if @min_count == 0
unit_nfa = @unit.to_nfa
last_state.add_transition(nil, unit_nfa.start_state)
end
unit_nfa.end_state.add_transition(nil, unit_nfa.start_state)
else
(@max_count - @min_count).times do
prev_nfa = unit_nfa
unit_nfa = @unit.to_nfa
prev_nfa.end_state.add_transition(nil, unit_nfa.start_state)
last_state.add_transition(nil, unit_nfa.start_state)
unit_nfa.end_state.add_transition(nil, nfa.end_state)
last_state = unit_nfa.end_state
end
end
nfa