Inheritance diagram for _VarCompState:

Collaboration diagram for _VarCompState:

Public Member Functions
	_VarCompState (int vr, comparator c, int vl)

bool	skip_variable (int vr) const
	The skip_variable predicate indicates which variables are "don't care" with respect to this SHom. More...

const GHom::range_t	get_range () const
	The range returns the dual of skip_variable, default implem considers that all variables are affected by this homomorphism. More...

GDDD	phiOne () const
	Evaluation over terminal GDDD::one. More...

GHom	phi (int vr, int vl) const
	Evaluation over an arbitrary arc of a SDD. More...

GHom	compose (const GHom &other) const

GHom	negate () const
	returns a negation of a selector homomorphism h, such that h.negate() (d) = d - h(d) More...

size_t	hash () const
	Hash key computation. More...

bool	is_selector () const
	The isSelector predicate indicates a homomorphism that only selects paths in the SDD (no modifications, no additions) Tagging with isSelector() allows to enable optimizations and makes the homomorphism eligible as "condition" in ITE construct. More...

void	print (std::ostream &os) const
	pretty print More...

bool	operator== (const StrongHom &s) const
	Comparator is pure virtual. Define a behavior in user homomorphisms. More...

_GHom *	clone () const

bool	operator== (const _GHom &h) const
	Comparator for unicity table. More...

GDDD	eval (const GDDD &) const
	The evaluation mechanism of strong homomorphisms. More...

virtual GDDD	has_image (const GDDD &) const

GDDD	has_image_skip (const GDDD &) const

virtual GHom	invert (const GDDD &) const
	returns the predescessor homomorphism, using pot to determine variable domains More...

bool	operator< (const _GHom &h) const
	Ordering between _GHom. It is the chronological ordering of creation. More...

virtual void	mark () const
	For garbage collection. Used in first phase of garbage collection. More...

Static Public Member Functions
static const _GHom *	get_concret (const GHom &ghom)

Private Member Functions
GDDD	eval_skip (const GDDD &) const

Private Attributes
int	var

int	val

comparator	comp

int	refCounter
	For garbage collection. More...

bool	marking
	For garbage collection. More...

bool	immediat
	For operation cache management. More...

size_t	creation_counter
	Counter of objects created (see constructors). More...

Constructor & Destructor Documentation

◆ _VarCompState()

_VarCompState::_VarCompState	(	int	vr,
		comparator	c,
		int	vl
	)

inline

Referenced by clone(), and negate().

Member Function Documentation

◆ clone()

_GHom* _VarCompState::clone ( ) const

inlinevirtual

Implements _GHom.

References _VarCompState().

◆ compose()

GHom _VarCompState::compose ( const GHom & other ) const

inlinevirtual

Reimplemented from _GHom.

References comp, _GHom::compose(), EQ, _GHom::get_concret(), LT, GDDD::null, val, and var.

◆ eval()

GDDD StrongHom::eval ( const GDDD & d ) const

virtualinherited

The evaluation mechanism of strong homomorphisms.

Evaluation is defined as :

Let an SDD d= (var, Union_i (val_i, d_i) )

h (d) = Sum_i ( phi(var, val_i) (d_i) )

Implements _GHom.

References DED::add(), GDDD::begin(), GDDD::end(), GDDD::null, GDDD::one, StrongHom::phi(), StrongHom::phiOne(), GDDD::top, and GDDD::variable().

◆ eval_skip()

GDDD _GHom::eval_skip ( const GDDD & d ) const

privateinherited

References GDDD::begin(), GDDD::end(), _GHom::eval(), GHom::id, GDDD::null, GDDD::one, _GHom::skip_variable(), GDDD::top, and GDDD::variable().

Referenced by GHom::eval().

◆ get_concret()

static const _GHom* _GHom::get_concret ( const GHom & ghom )

inlinestaticinherited

References GHom::concret.

Referenced by Add::Add(), addCompositionParameter(), compose(), _VarCompVar::compose(), And::eval(), Fixpoint::eval(), Fixpoint::has_image(), Inter::skip_variable(), NotCond::skip_variable(), Add::skip_variable(), Monotonic::skip_variable(), Compose::skip_variable(), RightConcat::skip_variable(), and Fixpoint::skip_variable().

◆ get_range()

const GHom::range_t _VarCompState::get_range ( ) const

inlinevirtual

The range returns the dual of skip_variable, default implem considers that all variables are affected by this homomorphism.

Reimplemented from _GHom.

References var.

◆ has_image()

GDDD StrongHom::has_image ( const GDDD & d ) const

virtualinherited

Reimplemented from _GHom.

References GDDD::begin(), GDDD::end(), GDDD::null, GDDD::one, StrongHom::phi(), StrongHom::phiOne(), GDDD::top, and GDDD::variable().

◆ has_image_skip()

GDDD _GHom::has_image_skip ( const GDDD & d ) const

inherited

References GDDD::begin(), GDDD::end(), _GHom::has_image(), GHom::has_image(), GHom::id, GDDD::null, GDDD::one, _GHom::skip_variable(), GDDD::top, and GDDD::variable().

◆ hash()

size_t _VarCompState::hash ( ) const

inlinevirtual

Hash key computation.

It is essential for good hash table operation that the spread of the keys be as good as possible. Also, fast hash key computation is a good design goal. Note that bad hash functions will yield more collisions, thus equality comparisons which may be quite costly.

Implements _GHom.

References comp, val, var, and ddd::wang32_hash().

◆ invert()

virtual GHom _GHom::invert ( const GDDD & ) const

inlinevirtualinherited

returns the predescessor homomorphism, using pot to determine variable domains

Reimplemented in _incVar, _setVarConst, Fixpoint, Minus, And, Compose, Monotonic, Add, Inter, Mult, Apply2k, Constant, and Identity.

References _GHom::GHom, _GHom::is_selector(), GDDD::null, and _GHom::print().

Referenced by GHom::invert().

◆ is_selector()

bool _VarCompState::is_selector ( ) const

inlinevirtual

The isSelector predicate indicates a homomorphism that only selects paths in the SDD (no modifications, no additions) Tagging with isSelector() allows to enable optimizations and makes the homomorphism eligible as "condition" in ITE construct.

Reimplemented from _GHom.

◆ mark()

virtual void _GHom::mark ( ) const

inlinevirtualinherited

For garbage collection. Used in first phase of garbage collection.

Reimplemented in MLHomAdapter, Fixpoint, Minus, RightConcat, LeftConcat, And, Compose, Monotonic, Add, NotCond, Inter, Mult, Apply2k, and Constant.

Referenced by GHom::mark().

◆ negate()

GHom _VarCompState::negate ( ) const

inlinevirtual

returns a negation of a selector homomorphism h, such that h.negate() (d) = d - h(d)

Reimplemented from _GHom.

References _VarCompState(), comp, negateComp(), val, and var.

◆ operator<()

bool _GHom::operator< ( const _GHom & h ) const

inherited

Ordering between _GHom. It is the chronological ordering of creation.

References _GHom::creation_counter.

◆ operator==() [1/2]

bool StrongHom::operator== ( const _GHom & h ) const

virtualinherited

Comparator for unicity table.

Users should not use this. The behavior is to check for type mismatch (and return false if that is the case) or call specialized comparators of derived subclasses otherwise.

Implements _GHom.

◆ operator==() [2/2]

bool _VarCompState::operator== ( const StrongHom & h ) const

inlinevirtual

Comparator is pure virtual. Define a behavior in user homomorphisms.

Implements StrongHom.

References comp, val, and var.

◆ phi()

GHom _VarCompState::phi	(	int	var,
		int	val
	)		const

inlinevirtual

Evaluation over an arbitrary arc of a SDD.

Parameters

var	the index of the variable labeling the node.
val	the value labeling the arc.

Returns: a homomorphism to apply on the successor node

Implements StrongHom.

References comp, EQ, GEQ, _GHom::GHom, GT, GHom::id, LEQ, LT, NEQ, GDDD::null, and val.

◆ phiOne()

GDDD _VarCompState::phiOne ( ) const

inlinevirtual

Evaluation over terminal GDDD::one.

Returns a constant DDD. A homomorphism that does not overload phiOne does not expect to meet the terminal during it's evaluation, therefore default behavior returns GDDD::top

Reimplemented from StrongHom.

References GDDD::one.

◆ print()

void _VarCompState::print ( std::ostream & os ) const

inlinevirtual

pretty print

Reimplemented from StrongHom.

References comp, GDDD::getvarName(), to_string(), val, and var.

◆ skip_variable()

bool _VarCompState::skip_variable ( int ) const

inlinevirtual

The skip_variable predicate indicates which variables are "don't care" with respect to this SHom.

This is defined as a StrongHom with : phi(var,val) { if ( skip_variable(var) ) return GShom( var, val, this ); else { real behavior } }

Reimplemented from _GHom.

References var.

Member Data Documentation

◆ comp

comparator _VarCompState::comp

private

Referenced by compose(), hash(), negate(), operator==(), phi(), and print().

◆ creation_counter

size_t _GHom::creation_counter

privateinherited

Counter of objects created (see constructors).

This is used for the ordering between homomorphisms.

Referenced by _GHom::_GHom(), and _GHom::operator<().

◆ immediat

bool _GHom::immediat

mutableprivateinherited

For operation cache management.

If immediat==true, eval is called without attempting a cache hit. Currently only the constant homomorphism has this attribute set to true.

Referenced by GHom::operator()().

◆ marking

bool _GHom::marking

mutableprivateinherited

For garbage collection.

Used in the two phase garbage collection process. A Hom that is not marked after the first pass over the unicity table, will be sweeped in the second phase. Outside of garbage collection routine, marking should always bear the value false.

Referenced by GHom::garbage(), and GHom::mark().

◆ refCounter

int _GHom::refCounter

mutableprivateinherited

For garbage collection.

Counts the number of times a _GShom is referenced from the context of an Shom.

Referenced by Hom::Hom(), Hom::operator=(), GHom::refCounter(), and Hom::~Hom().

◆ val

int _VarCompState::val

private

Referenced by compose(), hash(), negate(), operator==(), phi(), and print().

◆ var

int _VarCompState::var

private

Referenced by compose(), get_range(), hash(), negate(), operator==(), print(), and skip_variable().

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

Hom_Basic.cpp

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Constructor & Destructor Documentation

◆ _VarCompState()

Member Function Documentation

◆ clone()

◆ compose()

◆ eval()

◆ eval_skip()

◆ get_concret()

◆ get_range()

◆ has_image()

◆ has_image_skip()

◆ hash()

◆ invert()

◆ is_selector()

◆ mark()

◆ negate()

◆ operator<()

◆ operator==() [1/2]

◆ operator==() [2/2]

◆ phi()

◆ phiOne()

◆ print()

◆ skip_variable()

Member Data Documentation

◆ comp

◆ creation_counter

◆ immediat

◆ marking

◆ refCounter

◆ val

◆ var