org.dolben.MarkX
Class Monitor

java.lang.Object
  org.dolben.MarkX.Monitor

 class Monitor
extends java.lang.Object

A Monitor has a list of Requirements, one for each guess, and checks that a digit conforms to those Requirements, simply aggregating the effect of the individual Requirements.

Constructor Summary

Monitor(int maxGuesses)

Method Summary

void	addRequirement(Requirement requirement) adds a Requirement
boolean	pick(int digit, int left) checks that the a digit can be picked with a number of places left in the guess and informs all the Requirements of the pick when they all approve
boolean	removeRequirement() removes the last Requirement, for backing up when guess scoring is inconsistent
java.lang.String	toString() makes a string of the last Requirement
void	unpick(int digit) tells all of the Requirements for this Monitor to retract the pick of a digit

Methods inherited from class java.lang.Object

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

Constructor Detail

Monitor

Monitor(int maxGuesses)

Method Detail

addRequirement

public void addRequirement(Requirement requirement)

adds a Requirement

Parameters:

requirement - the Requirement added for the next guess

removeRequirement

public boolean removeRequirement()

removes the last Requirement, for backing up when guess scoring is inconsistent

Returns:

true iff there is a Requirement to remove

pick

public boolean pick(int digit,
                    int left)

checks that the a digit can be picked with a number of places left in the guess and informs all the Requirements of the pick when they all approve

Parameters:

digit - the digit to be checked

left - the number of places left for digits to be picked in the guess

Returns:

true iff it's OK with all of the requirements of this Monitor to pick the digit

unpick

public void unpick(int digit)

tells all of the Requirements for this Monitor to retract the pick of a digit

Parameters:

digit - the digit that is no longer picked

toString

public java.lang.String toString()

makes a string of the last Requirement

Overrides:

toString in class java.lang.Object

Returns:

a string representing the last Requirement