jtabwbx.prop.formula

Class SingleSuccedentSequentOnBitSet

java.lang.Object

jtabwbx.prop.formula.SingleSuccedentSequentOnBitSet

All Implemented Interfaces:

java.lang.Cloneable, _AbstractGoal, _SingleSuccedentSequent

public class SingleSuccedentSequentOnBitSet
extends java.lang.Object
implements _SingleSuccedentSequent, java.lang.Cloneable

Implementation of the _Sequent interface on Formula using a BitSet to represent the left-hand side of the sequent.

Author:

Mauro Ferrari

Constructor Summary

Constructors

Constructor and Description
SingleSuccedentSequentOnBitSet(FormulaFactory factory)

Method Summary

Modifier and Type	Method and Description
void	addLeft(Formula wff) Add the specified formula to the left hand side of this sequent.
void	addRight(Formula wff) This method add the specified formula in the right hand side of this sequent.
static SingleSuccedentSequentOnBitSet	buildArraySequent(FormulaFactory factory, java.util.Collection<Formula> leftFormulas, Formula rightFormula)
SingleSuccedentSequentOnBitSet	clone() Returns a fresh copy of this sequent.
boolean	contains(SingleSuccedentSequentOnBitSet other) Returns true if this sequent is contained in the one specifed as agrument; this holds if this and other have the same formula in the right-hand side and the set of formulas in the left-hand side of this includes the set of formulas in the left-hand side of other.
boolean	containsLeft(Formula wff) Returns true if this sequent contains the specified formula in the left hand side and false otherwise.
boolean	equals(java.lang.Object obj)
java.lang.String	format() Returns a string describing this goal
java.util.Collection<Formula>	getAllLeftFormulas() Returns the set containg all the formulas in the left hand side of this sequent or null if the left hand side of this sequent is empty.
java.util.Collection<Formula>	getAllLeftFormulas(FormulaType formulaType) Returns the collection of all the formulas in the left hand side of this sequent with the specified type or null if the left hand side of this sequent does not contain any formula of the specified type.
Formula	getLeft() Returns a formula from the left hand side of the sequent or null if le theft hand side is empty.
Formula	getLeft(FormulaType formulaType) Returns a formula of the specified type contained in the left hand side of the sequent or null if no formula of the specified type occurs in this sequent.
Formula	getRight() Returns the formula in the right hand side of this sequent or null if the right hand side of this sequent is empty.
Formula	getRightFormulaOfType(FormulaType formulaType) Returns the formula in the right hand side of this sequent if the formula has the specified type or null if the formula in the right hand side does not have the specified type.
int	hashCode()
boolean	isContained(SingleSuccedentSequentOnBitSet other) Returns true if this sequent is contained in the other.
boolean	isIdentityAxiom() Returns true iff this is an identity axiom, that is a sequent of the kind S,H ==> H.
boolean	removeLeft(Formula wff) Removes the specified formula from the left hand side of this sequent, if it is present.
boolean	removeRight() Removes the right formula form this sequent.
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

SingleSuccedentSequentOnBitSet

public SingleSuccedentSequentOnBitSet(FormulaFactory factory)

Method Detail

addLeft

public void addLeft(Formula wff)

Description copied from interface: _SingleSuccedentSequent

Add the specified formula to the left hand side of this sequent.

Specified by:

addLeft in interface _SingleSuccedentSequent

Parameters:

wff - the formula to add.

addRight

public void addRight(Formula wff)

Description copied from interface: _SingleSuccedentSequent

This method add the specified formula in the right hand side of this sequent. Since this class models single conclusion sequent if a formula is already present in the right hand side this method replace the previous formula with the specified one.

Specified by:

addRight in interface _SingleSuccedentSequent

Parameters:

wff - the formula to add in the right hand side of the sequent.

buildArraySequent

public static SingleSuccedentSequentOnBitSet buildArraySequent(FormulaFactory factory,
                                                               java.util.Collection<Formula> leftFormulas,
                                                               Formula rightFormula)

clone

public SingleSuccedentSequentOnBitSet clone()

Description copied from interface: _SingleSuccedentSequent

Returns a fresh copy of this sequent.

Specified by:

clone in interface _AbstractGoal

Specified by:

clone in interface _SingleSuccedentSequent

Overrides:

clone in class java.lang.Object

Returns:

a clone of this sequent.

contains

public boolean contains(SingleSuccedentSequentOnBitSet other)

Returns true if this sequent is contained in the one specifed as agrument; this holds if this and other have the same formula in the right-hand side and the set of formulas in the left-hand side of this includes the set of formulas in the left-hand side of other.

Parameters:

other - the other sequent.

Returns:

true if this sequent is contained in the other.

containsLeft

public boolean containsLeft(Formula wff)

Description copied from interface: _SingleSuccedentSequent

Returns true if this sequent contains the specified formula in the left hand side and false otherwise.

Specified by:

containsLeft in interface _SingleSuccedentSequent

Parameters:

wff - the formula to search

Returns:

true if the right hand side of the sequent contains the specified

format

public java.lang.String format()

Description copied from interface: _AbstractGoal

Returns a string describing this goal

Specified by:

format in interface _AbstractGoal

Returns:

a string describing this goal

getAllLeftFormulas

public java.util.Collection<Formula> getAllLeftFormulas()

Description copied from interface: _SingleSuccedentSequent

Returns the set containg all the formulas in the left hand side of this sequent or null if the left hand side of this sequent is empty.

Specified by:

getAllLeftFormulas in interface _SingleSuccedentSequent

Returns:

the left-hand side of this sequent or null.

getAllLeftFormulas

public java.util.Collection<Formula> getAllLeftFormulas(FormulaType formulaType)

Description copied from interface: _SingleSuccedentSequent

Returns the collection of all the formulas in the left hand side of this sequent with the specified type or null if the left hand side of this sequent does not contain any formula of the specified type.

Specified by:

getAllLeftFormulas in interface _SingleSuccedentSequent

Parameters:

formulaType - the type of the formulas.

Returns:

the collection containing all the formulas of the specified type or null if the left hand side of the sequent does not contain any formula of the sepcified type.

getLeft

public Formula getLeft()

Description copied from interface: _SingleSuccedentSequent

Returns a formula from the left hand side of the sequent or null if le theft hand side is empty.

Specified by:

getLeft in interface _SingleSuccedentSequent

Returns:

a formula or null.

getLeft

public Formula getLeft(FormulaType formulaType)

Description copied from interface: _SingleSuccedentSequent

Returns a formula of the specified type contained in the left hand side of the sequent or null if no formula of the specified type occurs in this sequent.

Specified by:

getLeft in interface _SingleSuccedentSequent

Parameters:

formulaType - the type of the formula to be returned

Returns:

a formula of the specified type contained in the left hand side of the sequent or null.

getRight

public Formula getRight()

Description copied from interface: _SingleSuccedentSequent

Returns the formula in the right hand side of this sequent or null if the right hand side of this sequent is empty.

Specified by:

getRight in interface _SingleSuccedentSequent

Returns:

the formula on the right or null.

getRightFormulaOfType

public Formula getRightFormulaOfType(FormulaType formulaType)

Description copied from interface: _SingleSuccedentSequent

Returns the formula in the right hand side of this sequent if the formula has the specified type or null if the formula in the right hand side does not have the specified type.

Specified by:

getRightFormulaOfType in interface _SingleSuccedentSequent

Parameters:

formulaType - the type of the formula to be returned

Returns:

the formula in the right hand-side of the sequent if it has the specified or null if the type of the formula in the right hand side is different from the specified type.

isContained

public boolean isContained(SingleSuccedentSequentOnBitSet other)

Returns true if this sequent is contained in the other.

Parameters:

other - the other sequent.

Returns:

true if this sequent is contained in the other.

isIdentityAxiom

public boolean isIdentityAxiom()

Description copied from interface: _SingleSuccedentSequent

Returns true iff this is an identity axiom, that is a sequent of the kind S,H ==> H.

Specified by:

isIdentityAxiom in interface _SingleSuccedentSequent

Returns:

true iff this is an identity axiom.

removeLeft

public boolean removeLeft(Formula wff)

Description copied from interface: _SingleSuccedentSequent

Removes the specified formula from the left hand side of this sequent, if it is present.

Specified by:

removeLeft in interface _SingleSuccedentSequent

Parameters:

wff - the formula to remove.

Returns:

true if this sequent contained the specified element.

removeRight

public boolean removeRight()

Description copied from interface: _SingleSuccedentSequent

Removes the right formula form this sequent.

Specified by:

removeRight in interface _SingleSuccedentSequent

Returns:

true if this sequent contained a formula in the right-hand side.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object