learner
Class RankedSymbol

java.lang.Object
  learner.RankedSymbol

All Implemented Interfaces:

java.lang.Comparable

public class RankedSymbol
extends java.lang.Object
implements java.lang.Comparable

The class RankedSymbol mimics the abstact data type ranked symbol, which consists of a symbol and a natural number. The number indicats how many subtrees a node labelled this symbol is expected to have.

Field Summary

int	rank the rank, a natural number indicating the symbols arity
java.lang.String	symbol the symbol itself

Constructor Summary

RankedSymbol(java.lang.String symbol, int rank)
Constructs a ranked symbol, given an symbol and a rank.

Method Summary

java.lang.Object	clone()
int	compareTo(java.lang.Object o) Comparasion function
boolean	equals(java.lang.Object object)
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

symbol

public java.lang.String symbol

the symbol itself

rank

public int rank

the rank, a natural number indicating the symbols arity

Constructor Detail

RankedSymbol

public RankedSymbol(java.lang.String symbol,
                    int rank)

Constructs a ranked symbol, given an symbol and a rank.

Parameters:

symbol - Any String will due.

rank - a natural number

Method Detail

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

compareTo

public int compareTo(java.lang.Object o)

Comparasion function

Specified by:

compareTo in interface java.lang.Comparable

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object