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spot::ltl::multop Class Reference
[LTL Abstract Syntax Tree]

Multi-operand operators.These operators are considered commutative and associative. More...

#include <ltlast/multop.hh>

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List of all members.

Classes

struct  paircmp
 Comparison functor used internally by ltl::multop. More...

Public Types

enum  type { Or, And }
typedef std::vector< formula * > vec
 List of formulae.

Public Member Functions

virtual void accept (visitor &v)
 Entry point for vspot::ltl::visitor instances.
virtual void accept (const_visitor &v) const
 Entry point for vspot::ltl::const_visitor instances.
unsigned size () const
 Get the number of children.
const formulanth (unsigned n) const
 Get the nth children.
formulanth (unsigned n)
 Get the nth children.
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 the atomic proposition.
formulaclone () const
 clone this node
void destroy () const
 release this node
size_t hash () const
 Return a hash key for the formula.

Static Public Member Functions

static formulainstance (type op, formula *first, formula *second)
 Build a spot::ltl::multop with two children.
static formulainstance (type op, vec *v)
 Build a spot::ltl::multop with many children.
static unsigned instance_count ()
 Number of instantiated multi-operand operators. For debugging.
static std::ostream & dump_instances (std::ostream &os)
 Dump all instances. For debugging.

Protected Types

typedef std::pair< type, vec * > pair
typedef std::map< pair, multop
*, paircmp
map

Protected Member Functions

 multop (type op, vec *v)
virtual ~multop ()
void ref_ ()
 increment reference counter if any
bool unref_ ()
 decrement reference counter if any, return true when the instance must be deleted (usually when the counter hits 0).
unsigned ref_count_ ()
 Number of references to this formula.

Protected Attributes

size_t count_
 The hash key of this formula.

Static Protected Attributes

static map instances

Private Attributes

type op_
vecchildren_

Detailed Description

Multi-operand operators.

These operators are considered commutative and associative.


Member Typedef Documentation

typedef std::map<pair, multop*, paircmp> spot::ltl::multop::map [protected]
typedef std::pair<type, vec*> spot::ltl::multop::pair [protected]
typedef std::vector<formula*> spot::ltl::multop::vec

List of formulae.


Member Enumeration Documentation

Enumerator:
Or 
And 

Constructor & Destructor Documentation

spot::ltl::multop::multop ( type  op,
vec v 
) [protected]
virtual spot::ltl::multop::~multop (  )  [protected, virtual]

Member Function Documentation

virtual void spot::ltl::multop::accept ( visitor v  )  [virtual]

Entry point for vspot::ltl::visitor instances.

Implements spot::ltl::formula.

virtual void spot::ltl::multop::accept ( const_visitor v  )  const [virtual]

Entry point for vspot::ltl::const_visitor instances.

Implements spot::ltl::formula.

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(), and spot::tgba_explicit_labelled< std::string, string_hash >::declare_acceptance_condition().

virtual std::string spot::ltl::multop::dump (  )  const [virtual]

Return a canonic representation of the atomic proposition.

Implements spot::ltl::formula.

static std::ostream& spot::ltl::multop::dump_instances ( std::ostream &  os  )  [static]

Dump all instances. For debugging.

size_t spot::ltl::formula::hash (  )  const [inline, inherited]
static formula* spot::ltl::multop::instance ( type  op,
vec v 
) [static]

Build a spot::ltl::multop with many children.

Same as the other instance() function, but take a vector of formula in argument. This vector is acquired by the spot::ltl::multop class, the caller should allocate it with new, but not use it (especially not destroy it) after it has been passed to spot::ltl::multop.

This functions can perform slight optimizations and may not return an ltl::multop objects. For instance if the vector contain only one unique element, this this formula will be returned as-is.

static formula* spot::ltl::multop::instance ( type  op,
formula first,
formula second 
) [static]

Build a spot::ltl::multop with two children.

If one of the children itself is a spot::ltl::multop with the same type, it will be merged. I.e., children if that child will be added, and that child itself will be destroyed. This allows incremental building of n-ary ltl::multop.

This functions can perform slight optimizations and may not return an ltl::multop objects. For instance if first and second are equal, that formula is returned as-is.

static unsigned spot::ltl::multop::instance_count (  )  [static]

Number of instantiated multi-operand operators. For debugging.

const formula* spot::ltl::multop::nth ( unsigned  n  )  const

Get the nth children.

Starting with n = 0.

formula* spot::ltl::multop::nth ( unsigned  n  ) 

Get the nth children.

Starting with n = 0.

type spot::ltl::multop::op (  )  const

Get the type of this operator.

const char* spot::ltl::multop::op_name (  )  const

Get the type of this operator, as a string.

void spot::ltl::ref_formula::ref_ (  )  [protected, virtual, inherited]

increment reference counter if any

Reimplemented from spot::ltl::formula.

unsigned spot::ltl::ref_formula::ref_count_ (  )  [protected, inherited]

Number of references to this formula.

unsigned spot::ltl::multop::size (  )  const

Get the number of children.

bool spot::ltl::ref_formula::unref_ (  )  [protected, virtual, inherited]

decrement reference counter if any, return true when the instance must be deleted (usually when the counter hits 0).

Reimplemented from spot::ltl::formula.


Member Data Documentation

size_t spot::ltl::formula::count_ [protected, inherited]

The hash key of this formula.

Referenced by spot::ltl::formula::hash().

map spot::ltl::multop::instances [static, protected]

The documentation for this class was generated from the following file:

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