Raptor.NDRules
Class FalsityIntro

java.lang.Object
  Raptor.NDRules.NDRule
      Raptor.NDRules.FalsityIntro

public class FalsityIntro
extends NDRule

Implements the Falsity Introduction rule
Extends abstract class NDRule.

Constructor Summary

FalsityIntro(ProofBox pProof)
Constructs an FalsityIntro.

Method Summary

void	addLine(ProofLine pClickedLine) Adds the extra lines to the rule once the input line has been added.
void	apply() Called by the RuleController to apply the rule.
void	check() Called by the RuleController to check the input lines to the rule.
static boolean	contradictory(Formula pFirst, Formula pSecond) Checks if the two formulas ar contradictory(One is the Not of the other one)
Formula	converse(Formula pFormula) Returns the negated form of the given formula If the formula is already negated it will remove the Not sign (e.g.
boolean	haveAll() Returns true if the rule has all of the required input lines.

Methods inherited from class Raptor.NDRules.NDRule

addInputLine, checkSignature, getNewFormula

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FalsityIntro

public FalsityIntro(ProofBox pProof)

Constructs an FalsityIntro.

Parameters:

pProof - ProofBox representing in which box the rule is being applied

Method Detail

addLine

public void addLine(ProofLine pClickedLine)
             throws java.lang.Exception

Adds the extra lines to the rule once the input line has been added.

Specified by:

addLine in class NDRule

Parameters:

pClickedLine - ProofLine which has been selected

Throws:

java.lang.Exception

haveAll

public boolean haveAll()

Returns true if the rule has all of the required input lines.

Specified by:

haveAll in class NDRule

check

public void check()
           throws java.lang.Exception

Called by the RuleController to check the input lines to the rule.

Specified by:

check in class NDRule

Throws:

java.lang.Exception

contradictory

public static boolean contradictory(Formula pFirst,
                                    Formula pSecond)

Checks if the two formulas ar contradictory(One is the Not of the other one)

Parameters:

pFirst - Formula represents the first formula

pSecond - Formula represents the second formula to be compared against the first formula

apply

public void apply()
           throws java.lang.Exception

Called by the RuleController to apply the rule.

Specified by:

apply in class NDRule

Throws:

java.lang.Exception

converse

public Formula converse(Formula pFormula)

Returns the negated form of the given formula
If the formula is already negated it will remove the Not sign (e.g. ~a --> a)
Otherwise the formula is negated (e.g. a --> ~a) or (e.g. ~~a --> ~~~a).

Parameters:

pFormula - Formula represents the formula which is to be negated.