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seq

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-12-29 10:13:19 -08:00
parent e2fab0a555
commit bd9b5b5735
5 changed files with 133 additions and 54 deletions
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26
src/math/automata/automaton.h
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@ -209,24 +209,16 @@ public:
moves mvs;
unsigned_vector final;
unsigned init = 0;
if (a.has_single_final_sink() && b.initial_state_is_source() && b.init() == 0) {
unsigned offset2 = a.num_states();
init = a.init();
append_moves(0, a, mvs);
append_moves(offset2, b, mvs);
append_final(offset2, b, final);
}
else {
unsigned offset1 = 1;
unsigned offset2 = a.num_states() + offset1;
mvs.push_back(move(m, 0, a.init() + offset1));
append_moves(offset1, a, mvs);
for (unsigned i = 0; i < a.m_final_states.size(); ++i) {
mvs.push_back(move(m, a.m_final_states[i], b.init() + offset2));
}
append_moves(offset2, b, mvs);
append_final(offset2, b, final);
unsigned offset1 = 1;
unsigned offset2 = a.num_states() + offset1;
mvs.push_back(move(m, 0, a.init() + offset1));
append_moves(offset1, a, mvs);
for (unsigned i = 0; i < a.m_final_states.size(); ++i) {
mvs.push_back(move(m, a.m_final_states[i] + offset1, b.init() + offset2));
}
append_moves(offset2, b, mvs);
append_final(offset2, b, final);
return alloc(automaton, m, init, final, mvs);
}