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seq API

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-01-02 22:52:28 -08:00
parent 5e553a4dc1
commit e10ecad5dc
14 changed files with 745 additions and 44 deletions
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23
src/math/automata/automaton.h
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@ -292,6 +292,8 @@ public:
// Generalized:
// Src - E -> dst - t -> dst1 => Src - t -> dst1 if dst is final => each Src is final
//
// src - e -> dst - ET -> dst1 => src - ET - dst1 if in_degree(dst) = 1, src != dst
//
void compress() {
for (unsigned i = 0; i < m_delta.size(); ++i) {
for (unsigned j = 0; j < m_delta[i].size(); ++j) {
@ -326,6 +328,17 @@ public:
add(move(m, src, dst1, t));
remove(dst, dst1, t);
}
else if (1 == in_degree(dst) && (!is_final_state(dst) || is_final_state(src)) && init() != dst) {
moves const& mvs = m_delta[dst];
moves mvs1;
for (unsigned k = 0; k < mvs.size(); ++k) {
mvs1.push_back(move(m, src, mvs[k].dst(), mvs[k].t()));
}
for (unsigned k = 0; k < mvs1.size(); ++k) {
remove(dst, mvs1[k].dst(), mvs1[k].t());
add(mvs1[k]);
}
}
else if (false && 1 == out_degree(dst) && all_epsilon_in(dst) && init() != dst && !is_final_state(dst)) {
move const& mv = m_delta[dst][0];
T* t = mv.t();
@ -364,7 +377,7 @@ public:
}
}
}
bool is_sequence(unsigned& length) const {
if (is_final_state(m_init) && (out_degree(m_init) == 0 || (out_degree(m_init) == 1 && is_loop_state(m_init)))) {
length = 0;
@ -466,6 +479,14 @@ public:
}
private:
void remove_dead_states() {
unsigned_vector remap;
for (unsigned i = 0; i < m_delta.size(); ++i) {
}
}
void add(move const& mv) {
m_delta[mv.src()].push_back(mv);
m_delta_inv[mv.dst()].push_back(mv);