se.chalmers.cs.gf.parse.chart
Class NonTerminalEdge

java.lang.Object
  se.chalmers.cs.gf.parse.chart.Edge
      se.chalmers.cs.gf.parse.chart.NonTerminalEdge

public class NonTerminalEdge
extends Edge

A parse chart edge produced by a non-terminal rule.

Constructor Summary

NonTerminalEdge(NonTerminalEdge e)

NonTerminalEdge(NonTerminalRule rule)

Method Summary

boolean	equals(NonTerminalEdge e)
boolean	equals(java.lang.Object o)
NonTerminalRule	getRule() Get the rule that this edge is for.
int	hashCode()
boolean	isActive() Checks if this edge is active, that is, if it is still missing some symbol.
boolean	needs(Category c) Checks if the next symbol needed is the given category.
void	stepForward() Move the dot one step forward.
java.lang.String	toString()

Methods inherited from class se.chalmers.cs.gf.parse.chart.Edge

getCategory

Methods inherited from class java.lang.Object

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

Constructor Detail

NonTerminalEdge

public NonTerminalEdge(NonTerminalRule rule)

NonTerminalEdge

public NonTerminalEdge(NonTerminalEdge e)

Method Detail

getRule

public NonTerminalRule getRule()

Get the rule that this edge is for.

Specified by:

getRule in class Edge

needs

public boolean needs(Category c)

Checks if the next symbol needed is the given category.

Specified by:

needs in class Edge

isActive

public boolean isActive()

Checks if this edge is active, that is, if it is still missing some symbol.

Specified by:

isActive in class Edge

stepForward

public void stepForward()

Move the dot one step forward.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

equals

public boolean equals(NonTerminalEdge e)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class Edge