Pandora.NDRules
Class Substitution

java.lang.Object
  Pandora.NDRules.NDRule
      Pandora.NDRules.Substitution

public class Substitution
extends NDRule

Implements the Substitution rule.
Extends abstract class NDRule.

Field Summary

Fields inherited from class Pandora.NDRules.NDRule

firstLine

Constructor Summary

Substitution(ProofBox proof)
Constructs a Substitution.

Method Summary

void	addLine(ProofLine clickedLine) 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.
void	findAll(ProofLine pELine, ProofLine pFLine) This method is only used when the Substitution rule is applied forwards. It finds all the possible substitution between two passed lines' formulae.
void	findMatch(Formula f, Equals e, ProofLine p) This is a helper method called by the findAll method, to check if the passed Term is cotained in the passed Equals Formula's left or right hand side.
void	findMatch(Term pTerm, Equals pEquals, ProofLine pLine)
boolean	haveAll() Returns true if the rule has all of the required input lines.
void	showMatch()

Methods inherited from class Pandora.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

Substitution

public Substitution(ProofBox proof)

Constructs a Substitution.

Parameters:

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

Method Detail

addLine

public void addLine(ProofLine clickedLine)
             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:

clickedLine - 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

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

findMatch

public void findMatch(Formula f,
                      Equals e,
                      ProofLine p)

This is a helper method called by the findAll method,
to check if the passed Term is cotained in the passed Equals Formula's left or right hand side.

Parameters:

t - Term represents the Term to look for in the passed Equals formula.

e - Equals represents the Equals formula to look for the passed Term in.

line - ProofLine represents the proof line containing the passed Term.

findMatch

public void findMatch(Term pTerm,
                      Equals pEquals,
                      ProofLine pLine)

findAll

public void findAll(ProofLine pELine,
                    ProofLine pFLine)
             throws java.lang.Exception

This method is only used when the Substitution rule is applied forwards.
It finds all the possible substitution between two passed lines' formulae.

Parameters:

eLine - ProofLine represents the proof line which includes the Equals Formula.

fLine - ProofLine represents the proof line which is to be looked for the possible substitutions.

Throws:

java.lang.Exception

showMatch

public void showMatch()