22 #include <spot/twa/fwd.hh> 23 #include <spot/graph/graph.hh> 24 #include <spot/graph/ngraph.hh> 25 #include <spot/twa/bdddict.hh> 26 #include <spot/twa/twa.hh> 71 virtual size_t hash()
const override 74 reinterpret_cast<const char*
>(
this) - static_cast<const char*>(
nullptr);
101 : cond(bddfalse), acc({})
108 : cond(cond), acc(acc)
114 if (cond.id() < other.cond.id())
116 if (cond.id() > other.cond.id())
118 return acc < other.acc;
123 return cond.id() == other.cond.id() &&
134 template<
class Graph>
139 typedef typename Graph::edge edge;
140 typedef typename Graph::state_data_t state;
164 p_ = g_->edge_storage(p_).next_succ;
168 virtual bool done()
const override 175 SPOT_ASSERT(!done());
176 return &g_->state_data(g_->edge_storage(p_).dst);
179 virtual bdd
cond()
const override 181 SPOT_ASSERT(!done());
182 return g_->edge_data(p_).cond;
187 SPOT_ASSERT(!done());
188 return g_->edge_data(p_).acc;
212 edge_storage_t>::value,
"type mismatch");
214 typedef unsigned state_num;
215 static_assert(std::is_same<typename graph_t::state, state_num>::value,
220 mutable unsigned init_number_;
224 void apply_permutation(std::vector<unsigned> permut);
232 explicit twa_graph(
const const_twa_graph_ptr& other, prop_set p)
233 :
twa(other->get_dict()),
234 g_(other->g_), init_number_(other->init_number_)
236 copy_acceptance_of(other);
246 template <
typename State_Name,
247 typename Name_Hash = std::hash<State_Name>,
248 typename Name_Equal = std::equal_to<State_Name>>
251 template <
typename State_Name,
252 typename Name_Hash = std::hash<State_Name>,
253 typename Name_Equal = std::equal_to<State_Name>>
261 create_formula_namer()
263 return create_namer<formula>();
275 const graph_t& get_graph()
const 280 unsigned num_states()
const 285 unsigned num_edges()
const 290 void set_init_state(state_num s)
292 bool univ = is_univ_dest(s);
293 if (SPOT_UNLIKELY((!univ && s >= num_states())
296 throw std::invalid_argument
297 (
"set_init_state() called with nonexisting state");
302 void set_univ_init_state(I dst_begin, I dst_end)
304 auto ns = num_states();
305 for (I i = dst_begin; i != dst_end; ++i)
306 if (SPOT_UNLIKELY(*i >= ns))
307 throw std::invalid_argument
308 (
"set_univ_init_state() called with nonexisting state");
312 void set_univ_init_state(
const std::initializer_list<state_num>& il)
314 set_univ_init_state(il.begin(), il.end());
317 state_num get_init_state_number()
const 320 if (num_states() == 0)
321 throw std::runtime_error(
"automaton has no state at all");
327 unsigned n = get_init_state_number();
328 if (SPOT_UNLIKELY(!is_existential()))
329 throw std::runtime_error
330 (
"the abstract interface does not support alternating automata");
331 return state_from_number(n);
340 if (this->iter_cache_)
344 it->recycle(s->succ);
345 this->iter_cache_ =
nullptr;
351 static constexpr
bool is_univ_dest(
const edge_storage_t& e)
353 return is_univ_dest(e.dst);
356 static constexpr
bool is_univ_dest(
unsigned s)
364 state_number(
const state* st)
const 371 state_from_number(state_num n)
const 376 std::string format_state(
unsigned n)
const;
380 return format_state(state_number(st));
389 unsigned edge_number(
const edge_storage_t& e)
const 399 twa_graph_edge_data& edge_data(
unsigned t)
409 const twa_graph_edge_data& edge_data(
unsigned t)
const 419 edge_storage_t& edge_storage(
unsigned t)
430 const edge_storage_t edge_storage(
unsigned t)
const 440 unsigned new_states(
unsigned n)
445 unsigned new_edge(
unsigned src,
unsigned dst,
449 return g_.
new_edge(src, dst, cond, acc);
452 unsigned new_acc_edge(
unsigned src,
unsigned dst,
453 bdd cond,
bool acc =
true)
456 return g_.
new_edge(src, dst, cond, this->acc().all_sets());
462 unsigned new_univ_edge(
unsigned src, I begin, I end,
469 unsigned new_univ_edge(
unsigned src, std::initializer_list<unsigned> dst,
473 return g_.
new_univ_edge(src, dst.begin(), dst.end(), cond, acc);
478 out(
unsigned src)
const 491 out_iteraser(
unsigned src)
497 univ_dests(
unsigned d)
const noexcept
499 return g_.univ_dests(d);
503 univ_dests(
const edge_storage_t& e)
const noexcept
505 return g_.univ_dests(e);
521 edges()
const noexcept
534 auto edge_vector()
const 540 bool is_dead_edge(
unsigned t)
const 571 void merge_univ_dests();
596 void purge_dead_states();
615 typedef void (*shift_action)(
const std::vector<unsigned>& newst,
617 void purge_unreachable_states(shift_action* f =
nullptr,
618 void* action_data =
nullptr);
624 void remove_unused_ap();
632 void copy_state_names_from(
const const_twa_graph_ptr& other);
638 if (SPOT_UNLIKELY(!(
bool)prop_state_acc()))
639 throw std::runtime_error
640 (
"state_acc_sets() should only be called on " 641 "automata with state-based acceptance");
642 for (
auto& t: g_.
out(s))
657 if (SPOT_UNLIKELY(!(
bool)prop_state_acc()))
658 throw std::runtime_error
659 (
"state_is_accepting() should only be called on " 660 "automata with state-based acceptance");
661 for (
auto& t: g_.out(s))
664 return acc().accepting(t.acc);
670 return state_is_accepting(state_number(s));
674 bool operator==(
const twa_graph& aut)
const 676 auto& dests1 = g_.dests_vector();
678 if (num_states() != aut.num_states() ||
679 num_edges() != aut.num_edges() ||
681 dests1.size() != dests2.size())
683 auto& trans1 = edge_vector();
684 auto& trans2 = aut.edge_vector();
685 if (!std::equal(trans1.begin() + 1, trans1.end(),
688 return std::equal(dests1.begin(), dests1.end(),
701 void defrag_states(std::vector<unsigned>&& newst,
unsigned used_states);
708 void dump_storage_as_dot(std::ostream& out,
709 const char* opt =
nullptr)
const;
713 #if __GNUC__ == 8 && __GNUC_MINOR__ == 2 714 # define SPOT_make_twa_graph__(...) \ 715 std::shared_ptr<twa_graph>(new twa_graph(__VA_ARGS__)) 717 # define SPOT_make_twa_graph__(...) \ 718 std::make_shared<twa_graph>(__VA_ARGS__) 725 return SPOT_make_shared_enabled__(
twa_graph, dict);
733 return SPOT_make_shared_enabled__(
twa_graph, aut, p);
741 return SPOT_make_shared_enabled__(
twa_graph, aut, p);
753 SPOT_API twa_graph_ptr
755 bool preserve_names =
false,
758 unsigned max_states = -(1
U));
state new_states(unsigned n, Args &&... args)
Create n new states.
Definition: graph.hh:684
Definition: automata.hh:26
virtual void destroy() const override
Release a state.
Definition: twagraph.hh:83
bool state_is_accepting(const state *s) const
Tell if a state is accepting.
Definition: twagraph.hh:668
const dests_vector_t & dests_vector() const
The vector used to store universal destinations.
Definition: graph.hh:997
state new_state(Args &&... args)
Create a new states.
Definition: graph.hh:670
A Transition-based ω-Automaton.
Definition: twa.hh:622
Abstract class for states.
Definition: twa.hh:50
bool is_existential() const
Whether the automaton uses only existential branching.
Definition: graph.hh:659
virtual size_t hash() const override
Hash a state.
Definition: twagraph.hh:71
internal::killer_edge_iterator< digraph > out_iteraser(state_storage_t &src)
Return a fake container with all edges leaving src, allowing erasure.
Definition: graph.hh:903
edge_storage_t & edge_storage(edge s)
return a reference to the storage of an edge
Definition: graph.hh:735
virtual std::string format_state(const state *st) const override
Format the state as a string for printing.
Definition: twagraph.hh:378
edge new_edge(state src, state dst, Args &&... args)
Create a new edge.
Definition: graph.hh:772
const state_vector & states() const
Return the vector of states.
Definition: graph.hh:918
virtual const twa_graph_state * get_init_state() const override
Get the initial state of the automaton.
Definition: twagraph.hh:325
state_storage_t::data_t & state_data(state s)
return the State_Data associated to a state
Definition: graph.hh:717
state_storage_t & state_storage(state s)
return a reference to the storage of a state
Definition: graph.hh:699
virtual bool first() override
Position the iterator on the first successor (if any).
Definition: twagraph.hh:156
internal::all_trans< const digraph > edges() const
Return a fake container with all edges (exluding erased edges)
Definition: graph.hh:933
Iterate over the successors of a state.
Definition: twa.hh:397
bool is_dead_edge(unsigned t) const
Tests whether an edge has been erased.
Definition: graph.hh:981
edge_storage_t::data_t & edge_data(edge s)
return the Edgeg_Data of an edge.
Definition: graph.hh:753
virtual bdd cond() const override
Get the condition on the edge leading to this successor.
Definition: twagraph.hh:179
acc_cond::mark_t state_acc_sets(unsigned s) const
Return the marks associated to a state if the acceptance is state-based.
Definition: twagraph.hh:636
twa_graph_ptr make_twa_graph(const const_twa_ptr &aut, twa::prop_set p, bool preserve_names=false, unsigned max_states=-(1U))
Build an explicit automaton from all states of aut,.
unsigned num_states() const
The number of states in the automaton.
Definition: graph.hh:645
const edge_vector_t & edge_vector() const
Return the vector of all edges.
Definition: graph.hh:952
virtual bool done() const override
Check whether the iteration is finished.
Definition: twagraph.hh:168
virtual int compare(const spot::state *other) const override
Compares two states (that come from the same automaton).
Definition: twagraph.hh:59
virtual const twa_graph_state * dst() const override
Get the destination state of the current edge.
Definition: twagraph.hh:173
unsigned num_edges() const
The number of edges in the automaton.
Definition: graph.hh:653
bool is_valid_edge(edge t) const
Test whether the given edge is valid.
Definition: graph.hh:969
edge index_of_edge(const edge_storage_t &tt) const
Conveart a storage reference into an edge number.
Definition: graph.hh:865
virtual acc_cond::mark_t acc() const override
Get the acceptance mark of the edge leading to this successor.
Definition: twagraph.hh:185
bool state_is_accepting(unsigned s) const
Tell if a state is accepting.
Definition: twagraph.hh:655
internal::state_out< digraph > out(state src)
Return a fake container with all edges leaving src.
Definition: graph.hh:874
virtual twa_succ_iterator * succ_iter(const state *st) const override
Get an iterator over the successors of local_state.
Definition: twagraph.hh:335
Iterator used by the on-the-fly interface of twa_graph.
Definition: twagraph.hh:135
state new_univ_dests(I dst_begin, I dst_end)
Create a new universal destination group.
Definition: graph.hh:796
Graph-based representation of a TωA.
Definition: twagraph.hh:200
Graph-based representation of a TωA.
Definition: twagraph.hh:39
edge new_univ_edge(state src, I dst_begin, I dst_end, Args &&... args)
Create a new universal edge.
Definition: graph.hh:816
unsigned num_sets() const
Number of acceptance sets used by the automaton.
Definition: twa.hh:934
virtual bool next() override
Jump to the next successor (if any).
Definition: twagraph.hh:162
An acceptance mark.
Definition: acc.hh:87
bool is_existential() const
Whether the automaton uses only existential branching.
Definition: twagraph.hh:509
Data attached to edges of a twa_graph.
Definition: twagraph.hh:95
virtual twa_graph_state * clone() const override
Duplicate a state.
Definition: twagraph.hh:78