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Add a new form of TA with a Single-pass emptiness check (STA)

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* src/ta/ta.cc, src/ta/ta.hh, src/ta/taexplicit.cc,
src/ta/taexplicit.hh, src/ta/taproduct.cc,src/ta/taproduct.hh,
src/taalgos/dotty.cc, src/taalgos/emptinessta.cc,
src/taalgos/emptinessta.hh, src/taalgos/minimize.cc,
src/taalgos/reachiter.cc, src/taalgos/sba2ta.cc, src/taalgos/sba2ta.hh,
src/tgbatest/ltl2ta.test, src/tgbatest/ltl2tgba.cc: Impacts of the
implementation of a new variant of TA, called STA, which involve a
Single-pass emptiness check. The new options (-in and -lv) added to
build the new variants of TA allow to add two artificial states:
1- an initial artificial state to have an unique initial state (-in)
2- a livelock artificial state which has no successors in order to
obtain the new form of TA which requires only a Single-pass emptiness-
check: STA (-lv).
This commit is contained in:
Ala-Eddine Ben-Salem 2011-05-17 23:41:45 +02:00 • committed by Alexandre Duret-Lutz
parent 310973f88c
commit 782ba0010b
15 changed files with 1224 additions and 711 deletions
Download patch file Download diff file Expand all files Collapse all files

33
src/ta/taexplicit.hh
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@ -41,7 +41,8 @@ namespace spot
class ta_explicit : public ta
{
public:
ta_explicit(const tgba* tgba_);
ta_explicit(const tgba* tgba_, state_ta_explicit* artificial_initial_state =
0);
const tgba*
get_tgba() const;
@ -50,7 +51,7 @@ namespace spot
add_state(state_ta_explicit* s);
void
add_to_initial_states_set(state* s);
add_to_initial_states_set(state* s, bdd condition = bddfalse);
void
create_transition(state_ta_explicit* source, bdd condition,
@ -91,9 +92,28 @@ namespace spot
virtual void
free_state(const spot::state* s) const;
spot::state*
get_artificial_initial_state() const
{
return (spot::state*) artificial_initial_state_;
}
void
set_artificial_initial_state(state_ta_explicit* s)
{
artificial_initial_state_ = s;
}
virtual void
delete_stuttering_and_hole_successors(spot::state* s);
ta::states_set_t
get_states_set()
{
return states_set_;
}
private:
// Disallow copy.
ta_explicit(const ta_explicit& other);
@ -103,6 +123,7 @@ namespace spot
ta::states_set_t states_set_;
ta::states_set_t initial_states_set_;
const tgba* tgba_;
state_ta_explicit* artificial_initial_state_;
};
@ -122,7 +143,8 @@ namespace spot
state_ta_explicit(const state* tgba_state, const bdd tgba_condition,
bool is_initial_state = false, bool is_accepting_state = false,
bool is_livelock_accepting_state = false, transitions* trans = 0) :
bool is_livelock_accepting_state = false, transitions* trans = 0,
bool is_the_artificial_livelock_accepting_state = false) :
tgba_state_(tgba_state), tgba_condition_(tgba_condition),
is_initial_state_(is_initial_state), is_accepting_state_(
is_accepting_state), is_livelock_accepting_state_(
@ -164,10 +186,15 @@ namespace spot
is_livelock_accepting_state() const;
void
set_livelock_accepting_state(bool is_livelock_accepting_state);
bool
is_initial_state() const;
void
set_initial_state(bool is_initial_state);
bool
is_hole_state() const;
void
delete_stuttering_and_hole_successors();