spot
0.9.1
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A constant (True or False) More...
#include <ltlast/constant.hh>
Public Types | |
enum | type { False, True, EmptyWord } |
enum | opkind { Constant, AtomicProp, UnOp, BinOp, MultOp, BUnOp, AutomatOp } |
Kind of a sub-formula. More... | |
Public Member Functions | |
virtual void | accept (visitor &v) const |
Entry point for spot::ltl::visitor instances. | |
type | val () const |
Return the value of the constant. | |
const char * | val_name () const |
Return the value of the constant as a string. | |
virtual std::string | dump () const |
Return a canonic representation of the formula. | |
const formula * | clone () const |
clone this node | |
void | destroy () const |
release this node | |
opkind | kind () const |
Return the kind of the top-level operator. | |
bool | is_boolean () const |
Whether the formula use only boolean operators. | |
bool | is_sugar_free_boolean () const |
Whether the formula use only AND, OR, and NOT operators. | |
bool | is_in_nenoform () const |
Whether the formula is in negative normal form. | |
bool | is_X_free () const |
Whether the formula avoids the X operator. | |
bool | is_sugar_free_ltl () const |
Whether the formula avoids the F and G operators. | |
bool | is_ltl_formula () const |
Whether the formula uses only LTL operators. | |
bool | is_eltl_formula () const |
Whether the formula uses only ELTL operators. | |
bool | is_psl_formula () const |
Whether the formula uses only PSL operators. | |
bool | is_sere_formula () const |
Whether the formula uses only SERE operators. | |
bool | is_finite () const |
bool | is_eventual () const |
Whether the formula is purely eventual. | |
bool | is_universal () const |
Whether a formula is purely universal. | |
bool | is_syntactic_safety () const |
Whether a PSL/LTL formula is syntactic safety property. | |
bool | is_syntactic_guarantee () const |
Whether a PSL/LTL formula is syntactic guarantee property. | |
bool | is_syntactic_obligation () const |
Whether a PSL/LTL formula is syntactic obligation property. | |
bool | is_syntactic_recurrence () const |
Whether a PSL/LTL formula is syntactic recurrence property. | |
bool | is_syntactic_persistence () const |
Whether a PSL/LTL formula is syntactic persistence property. | |
bool | is_marked () const |
Whether the formula has an occurrence of EConcatMarked. | |
bool | accepts_eword () const |
Whether the formula accepts [*0]. | |
unsigned | get_props () const |
The properties as a field of bits. For internal use. | |
size_t | hash () const |
Return a hash key for the formula. | |
Static Public Member Functions | |
static constant * | true_instance () |
Get the sole instance of spot::ltl::constant::constant(True). | |
static constant * | false_instance () |
Get the sole instance of spot::ltl::constant::constant(False). | |
static constant * | empty_word_instance () |
Get the sole instance of spot::ltl::constant::constant(EmptyWord). | |
Protected Member Functions | |
constant (type val) | |
virtual | ~constant () |
virtual void | ref_ () const |
increment reference counter if any | |
virtual bool | unref_ () const |
decrement reference counter if any, return true when the instance must be deleted (usually when the counter hits 0). | |
Protected Attributes | |
size_t | count_ |
The hash key of this formula. | |
union { | |
unsigned props | |
ltl_prop is | |
}; | |
Private Attributes | |
type | val_ |
Static Private Attributes | |
static constant | true_instance_ |
static constant | false_instance_ |
static constant | empty_word_instance_ |
A constant (True or False)
enum spot::ltl::formula::opkind [inherited] |
spot::ltl::constant::constant | ( | type | val | ) | [protected] |
virtual spot::ltl::constant::~constant | ( | ) | [protected, virtual] |
virtual void spot::ltl::constant::accept | ( | visitor & | v | ) | const [virtual] |
Entry point for spot::ltl::visitor instances.
Implements spot::ltl::formula.
bool spot::ltl::formula::accepts_eword | ( | ) | const [inline, inherited] |
Whether the formula accepts [*0].
References spot::ltl::formula::ltl_prop::accepting_eword, and spot::ltl::formula::is.
const formula* spot::ltl::formula::clone | ( | ) | const [inherited] |
clone this node
This increments the reference counter of this node (if one is used).
void spot::ltl::formula::destroy | ( | ) | const [inherited] |
release this node
This decrements the reference counter of this node (if one is used) and can free the object.
Referenced by spot::taa_tgba_labelled< std::string, string_hash >::add_acceptance_condition(), spot::explicit_graph< State, tgba >::add_condition(), spot::explicit_graph< State, tgba >::declare_acceptance_condition(), spot::destroy_key< const ltl::formula * >::destroy(), and spot::explicit_graph< State, tgba >::get_acceptance_condition().
virtual std::string spot::ltl::constant::dump | ( | ) | const [virtual] |
Return a canonic representation of the formula.
Implements spot::ltl::formula.
static constant* spot::ltl::constant::empty_word_instance | ( | ) | [inline, static] |
Get the sole instance of spot::ltl::constant::constant(EmptyWord).
References empty_word_instance_.
static constant* spot::ltl::constant::false_instance | ( | ) | [inline, static] |
Get the sole instance of spot::ltl::constant::constant(False).
References false_instance_.
unsigned spot::ltl::formula::get_props | ( | ) | const [inline, inherited] |
The properties as a field of bits. For internal use.
References spot::ltl::formula::props.
size_t spot::ltl::formula::hash | ( | ) | const [inline, inherited] |
Return a hash key for the formula.
References spot::ltl::formula::count_.
Referenced by spot::ltl::formula_ptr_less_than::operator()(), and spot::ltl::formula_ptr_hash::operator()().
bool spot::ltl::formula::is_boolean | ( | ) | const [inline, inherited] |
Whether the formula use only boolean operators.
References spot::ltl::formula::ltl_prop::boolean, and spot::ltl::formula::is.
bool spot::ltl::formula::is_eltl_formula | ( | ) | const [inline, inherited] |
Whether the formula uses only ELTL operators.
References spot::ltl::formula::ltl_prop::eltl_formula, and spot::ltl::formula::is.
bool spot::ltl::formula::is_eventual | ( | ) | const [inline, inherited] |
Whether the formula is purely eventual.
Pure eventuality formulae are defined in
/// @InProceedings{ etessami.00.concur, /// author = {Kousha Etessami and Gerard J. Holzmann}, /// title = {Optimizing {B\"u}chi Automata}, /// booktitle = {Proceedings of the 11th International Conference on /// Concurrency Theory (Concur'2000)}, /// pages = {153--167}, /// year = {2000}, /// editor = {C. Palamidessi}, /// volume = {1877}, /// series = {Lecture Notes in Computer Science}, /// publisher = {Springer-Verlag} /// } ///
A word that satisfies a pure eventuality can be prefixed by anything and still satisfies the formula.
References spot::ltl::formula::ltl_prop::eventual, and spot::ltl::formula::is.
bool spot::ltl::formula::is_finite | ( | ) | const [inline, inherited] |
Whether a SERE describes a finite language, or an LTL formula uses no temporal operator but X.
References spot::ltl::formula::ltl_prop::finite, and spot::ltl::formula::is.
bool spot::ltl::formula::is_in_nenoform | ( | ) | const [inline, inherited] |
Whether the formula is in negative normal form.
A formula is in negative normal form if the not operators occur only in front of atomic propositions.
References spot::ltl::formula::ltl_prop::in_nenoform, and spot::ltl::formula::is.
bool spot::ltl::formula::is_ltl_formula | ( | ) | const [inline, inherited] |
Whether the formula uses only LTL operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::ltl_formula.
bool spot::ltl::formula::is_marked | ( | ) | const [inline, inherited] |
Whether the formula has an occurrence of EConcatMarked.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::not_marked.
bool spot::ltl::formula::is_psl_formula | ( | ) | const [inline, inherited] |
Whether the formula uses only PSL operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::psl_formula.
bool spot::ltl::formula::is_sere_formula | ( | ) | const [inline, inherited] |
Whether the formula uses only SERE operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::sere_formula.
bool spot::ltl::formula::is_sugar_free_boolean | ( | ) | const [inline, inherited] |
Whether the formula use only AND, OR, and NOT operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::sugar_free_boolean.
bool spot::ltl::formula::is_sugar_free_ltl | ( | ) | const [inline, inherited] |
Whether the formula avoids the F and G operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::sugar_free_ltl.
bool spot::ltl::formula::is_syntactic_guarantee | ( | ) | const [inline, inherited] |
Whether a PSL/LTL formula is syntactic guarantee property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_guarantee.
bool spot::ltl::formula::is_syntactic_obligation | ( | ) | const [inline, inherited] |
Whether a PSL/LTL formula is syntactic obligation property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_obligation.
bool spot::ltl::formula::is_syntactic_persistence | ( | ) | const [inline, inherited] |
Whether a PSL/LTL formula is syntactic persistence property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_persistence.
bool spot::ltl::formula::is_syntactic_recurrence | ( | ) | const [inline, inherited] |
Whether a PSL/LTL formula is syntactic recurrence property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_recurrence.
bool spot::ltl::formula::is_syntactic_safety | ( | ) | const [inline, inherited] |
Whether a PSL/LTL formula is syntactic safety property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_safety.
bool spot::ltl::formula::is_universal | ( | ) | const [inline, inherited] |
Whether a formula is purely universal.
Purely universal formulae are defined in
/// @InProceedings{ etessami.00.concur, /// author = {Kousha Etessami and Gerard J. Holzmann}, /// title = {Optimizing {B\"u}chi Automata}, /// booktitle = {Proceedings of the 11th International Conference on /// Concurrency Theory (Concur'2000)}, /// pages = {153--167}, /// year = {2000}, /// editor = {C. Palamidessi}, /// volume = {1877}, /// series = {Lecture Notes in Computer Science}, /// publisher = {Springer-Verlag} /// } ///
Any (non-empty) suffix of a word that satisfies a purely universal formula also satisfies the formula.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::universal.
bool spot::ltl::formula::is_X_free | ( | ) | const [inline, inherited] |
Whether the formula avoids the X operator.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::X_free.
opkind spot::ltl::formula::kind | ( | ) | const [inline, inherited] |
Return the kind of the top-level operator.
References spot::ltl::formula::kind_.
Referenced by spot::ltl::is_atomic_prop(), spot::ltl::is_binop(), spot::ltl::is_bunop(), spot::ltl::is_constant(), spot::ltl::is_multop(), and spot::ltl::is_unop().
virtual void spot::ltl::formula::ref_ | ( | ) | const [protected, virtual, inherited] |
increment reference counter if any
Reimplemented in spot::ltl::ref_formula.
static constant* spot::ltl::constant::true_instance | ( | ) | [inline, static] |
Get the sole instance of spot::ltl::constant::constant(True).
References true_instance_.
Referenced by spot::ltl::bunop::one_star().
virtual bool spot::ltl::formula::unref_ | ( | ) | const [protected, virtual, inherited] |
decrement reference counter if any, return true when the instance must be deleted (usually when the counter hits 0).
Reimplemented in spot::ltl::ref_formula.
type spot::ltl::constant::val | ( | ) | const |
Return the value of the constant.
const char* spot::ltl::constant::val_name | ( | ) | const |
Return the value of the constant as a string.
union { ... } [protected, inherited] |
size_t spot::ltl::formula::count_ [protected, inherited] |
The hash key of this formula.
Referenced by spot::ltl::formula::hash().
constant spot::ltl::constant::empty_word_instance_ [static, private] |
Referenced by empty_word_instance().
constant spot::ltl::constant::false_instance_ [static, private] |
Referenced by false_instance().
ltl_prop spot::ltl::formula::is [inherited] |
Referenced by spot::ltl::formula::accepts_eword(), spot::ltl::formula::is_boolean(), spot::ltl::formula::is_eltl_formula(), spot::ltl::formula::is_eventual(), spot::ltl::formula::is_finite(), spot::ltl::formula::is_in_nenoform(), spot::ltl::formula::is_ltl_formula(), spot::ltl::formula::is_marked(), spot::ltl::formula::is_psl_formula(), spot::ltl::formula::is_sere_formula(), spot::ltl::formula::is_sugar_free_boolean(), spot::ltl::formula::is_sugar_free_ltl(), spot::ltl::formula::is_syntactic_guarantee(), spot::ltl::formula::is_syntactic_obligation(), spot::ltl::formula::is_syntactic_persistence(), spot::ltl::formula::is_syntactic_recurrence(), spot::ltl::formula::is_syntactic_safety(), spot::ltl::formula::is_universal(), and spot::ltl::formula::is_X_free().
unsigned spot::ltl::formula::props [inherited] |
Referenced by spot::ltl::formula::get_props().
constant spot::ltl::constant::true_instance_ [static, private] |
Referenced by true_instance().
type spot::ltl::constant::val_ [private] |