spot
1.0.1
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Bounded unary operator. More...
#include <ltlast/bunop.hh>
Public Types | |
enum | type { Star } |
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. | |
const formula * | child () const |
Get the sole operand of this operator. | |
unsigned | min () const |
Minimum number of repetition. | |
unsigned | max () const |
Minimum number of repetition. | |
std::string | format () const |
A string representation of the operator. | |
type | op () const |
Get the type of this operator. | |
const char * | op_name () const |
Get the type of this operator, as a string. | |
virtual std::string | dump () const |
Return a canonic representation of operation. | |
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]. | |
bool | has_lbt_atomic_props () const |
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 const formula * | instance (type op, const formula *child, unsigned min=0, unsigned max=unbounded) |
Build a bunop with bounds min and max. | |
static const formula * | sugar_goto (const formula *child, unsigned min=1, unsigned max=unbounded) |
Implement b[->i..j] using the Kleen star. | |
static const formula * | sugar_equal (const formula *child, unsigned min=0, unsigned max=unbounded) |
Implement b[=i..j] using the Kleen star. | |
static unsigned | instance_count () |
Number of instantiated unary operators. For debugging. | |
static std::ostream & | dump_instances (std::ostream &os) |
Dump all instances. For debugging. | |
static const formula * | one_star () |
Return a formula for 1[*] . |
Static Public Attributes | |
static const unsigned | unbounded = -1U |
Protected Types | |
typedef std::pair< unsigned, unsigned > | pairu |
typedef std::pair< type, const formula * > | pairo |
typedef std::pair< pairo, pairu > | pair |
typedef std::map< pair, const bunop * > | map |
Protected Member Functions | |
bunop (type op, const formula *child, unsigned min, unsigned max) | |
virtual | ~bunop () |
void | ref_ () const |
increment reference counter if any | |
bool | unref_ () const |
decrement reference counter if any, return true when the instance must be deleted (usually when the counter hits 0). | |
unsigned | ref_count_ () const |
Number of references to this formula. |
Protected Attributes | |
size_t | count_ |
The hash key of this formula. | |
union { | |
unsigned props | |
ltl_prop is | |
}; |
Static Protected Attributes | |
static map | instances |
Private Attributes | |
type | op_ |
const formula * | child_ |
unsigned | min_ |
unsigned | max_ |
Static Private Attributes | |
static const formula * | one_star_ |
Bounded unary operator.
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protected |
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protected |
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protected |
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protected |
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inherited |
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protectedvirtual |
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virtual |
Entry point for spot::ltl::visitor instances.
Implements spot::ltl::formula.
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inlineinherited |
Whether the formula accepts [*0].
References spot::ltl::formula::ltl_prop::accepting_eword, and spot::ltl::formula::is.
const formula* spot::ltl::bunop::child | ( | ) | const |
Get the sole operand of this operator.
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inherited |
clone this node
This increments the reference counter of this node (if one is used).
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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().
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virtual |
Return a canonic representation of operation.
Implements spot::ltl::formula.
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static |
Dump all instances. For debugging.
std::string spot::ltl::bunop::format | ( | ) | const |
A string representation of the operator.
For instance "[*2..]".
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inlineinherited |
The properties as a field of bits. For internal use.
References spot::ltl::formula::props.
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inlineinherited |
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::lbt_atomic_props.
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inlineinherited |
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()().
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static |
Build a bunop with bounds min and max.
The following trivial simplifications are performed automatically (the left expression is rewritten as the right expression):
These rewriting rules imply that it is not possible to build an LTL formula object that is SYNTACTICALLY equal to one of these left expressions.
Referenced by one_star().
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static |
Number of instantiated unary operators. For debugging.
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inlineinherited |
Whether the formula use only boolean operators.
References spot::ltl::formula::ltl_prop::boolean, and spot::ltl::formula::is.
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inlineinherited |
Whether the formula uses only ELTL operators.
References spot::ltl::formula::ltl_prop::eltl_formula, and spot::ltl::formula::is.
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inlineinherited |
Whether the formula is purely eventual.
Pure eventuality formulae are defined in @verbatim
/// { 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.
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inlineinherited |
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.
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inlineinherited |
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.
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inlineinherited |
Whether the formula uses only LTL operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::ltl_formula.
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inlineinherited |
Whether the formula has an occurrence of EConcatMarked.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::not_marked.
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inlineinherited |
Whether the formula uses only PSL operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::psl_formula.
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inlineinherited |
Whether the formula uses only SERE operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::sere_formula.
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inlineinherited |
Whether the formula use only AND, OR, and NOT operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::sugar_free_boolean.
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inlineinherited |
Whether the formula avoids the F and G operators.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::sugar_free_ltl.
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inlineinherited |
Whether a PSL/LTL formula is syntactic guarantee property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_guarantee.
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inlineinherited |
Whether a PSL/LTL formula is syntactic obligation property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_obligation.
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inlineinherited |
Whether a PSL/LTL formula is syntactic persistence property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_persistence.
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inlineinherited |
Whether a PSL/LTL formula is syntactic recurrence property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_recurrence.
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inlineinherited |
Whether a PSL/LTL formula is syntactic safety property.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::syntactic_safety.
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inlineinherited |
Whether a formula is purely universal.
Purely universal formulae are defined in @verbatim
/// { 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.
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inlineinherited |
Whether the formula avoids the X operator.
References spot::ltl::formula::is, and spot::ltl::formula::ltl_prop::X_free.
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inlineinherited |
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().
unsigned spot::ltl::bunop::max | ( | ) | const |
Minimum number of repetition.
unsigned spot::ltl::bunop::min | ( | ) | const |
Minimum number of repetition.
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inlinestatic |
Return a formula for 1[*]
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A global instance is returned, and it should not be destroyed. Remember to clone it if you use it to build a formula.
References instance(), one_star_, Star, and spot::ltl::constant::true_instance().
type spot::ltl::bunop::op | ( | ) | const |
Get the type of this operator.
const char* spot::ltl::bunop::op_name | ( | ) | const |
Get the type of this operator, as a string.
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protectedvirtualinherited |
increment reference counter if any
Reimplemented from spot::ltl::formula.
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protectedinherited |
Number of references to this formula.
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static |
Implement b[=i..j] using the Kleen star.
b[=i..j]
is implemented as ((!b)[*];b)[*i..j];(!b)[*]
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Implement b[->i..j]
using the Kleen star.
b[->i..j]
is implemented as ((!b)[*];b)[*i..j]
.
Note that min defaults to 1, not 0, because [->] means [->1..].
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protectedvirtualinherited |
decrement reference counter if any, return true when the instance must be deleted (usually when the counter hits 0).
Reimplemented from spot::ltl::formula.
union { ... } |
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private |
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protectedinherited |
The hash key of this formula.
Referenced by spot::ltl::formula::hash().
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staticprotected |
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inherited |
Referenced by spot::ltl::formula::accepts_eword(), spot::ltl::formula::has_lbt_atomic_props(), 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().
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private |
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private |
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staticprivate |
Referenced by one_star().
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private |
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inherited |
Referenced by spot::ltl::formula::get_props().
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static |
Referenced by spot::ltl::is_KleenStar().