marf.nlp.Parsing.GrammarCompiler
Class GrammarElement

java.lang.Object
  marf.nlp.Parsing.GrammarCompiler.GrammarElement

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

NonTerminal, SemanticToken, Terminal

public abstract class GrammarElement
extends java.lang.Object
implements java.io.Serializable

Generic GrammarToken. Must be subclassed. $Id: GrammarElement.java,v 1.7 2005/06/16 19:58:57 mokhov Exp $

Since:

0.3.0

Version:

$Revision: 1.7 $

Author:

Serguei Mokhov

See Also:

Serialized Form

Field Summary

protected java.util.Vector	FirstSet FirstSet of us.
protected int	ID ID to act as an index to table.
protected java.lang.String	Name A name of a token to refer to.
protected Token	oToken A bit extra info in the encasulted token.

Constructor Summary

protected	GrammarElement(java.lang.String pName, int pID)
protected	GrammarElement(Token poToken, int pID) Preferred Constructor.

Method Summary

boolean	addToFirstSet(NonTerminal poNonTerminal) Adds a single non-terminal to the first set.
boolean	addToFirstSet(Terminal poTerminal) Adds a single terminal to the first set.
boolean	addToFirstSet(java.util.Vector poSet) Appends elements from the passed set to its current first set.
java.util.Vector	getFirstSet()
int	getID()
static java.lang.String	getMARFSourceCodeRevision() Retrieves class' revision.
java.lang.String	getName()
Token	getToken()
boolean	isEqualByName(java.lang.String pstrName)
abstract boolean	isNonTerminal()
abstract boolean	isTerminal()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

Name

protected java.lang.String Name

A name of a token to refer to.

ID

protected int ID

ID to act as an index to table.

oToken

protected Token oToken

A bit extra info in the encasulted token.

FirstSet

protected java.util.Vector FirstSet

FirstSet of us.

Constructor Detail

GrammarElement

protected GrammarElement(Token poToken,
                         int pID)

Preferred Constructor.

GrammarElement

protected GrammarElement(java.lang.String pName,
                         int pID)

Method Detail

isTerminal

public abstract boolean isTerminal()

isNonTerminal

public abstract boolean isNonTerminal()

getID

public final int getID()

getName

public final java.lang.String getName()

getToken

public final Token getToken()

addToFirstSet

public boolean addToFirstSet(java.util.Vector poSet)

Appends elements from the passed set to its current first set.

addToFirstSet

public boolean addToFirstSet(Terminal poTerminal)

Adds a single terminal to the first set.

addToFirstSet

public boolean addToFirstSet(NonTerminal poNonTerminal)

Adds a single non-terminal to the first set.

getFirstSet

public java.util.Vector getFirstSet()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

isEqualByName

public boolean isEqualByName(java.lang.String pstrName)

getMARFSourceCodeRevision

public static java.lang.String getMARFSourceCodeRevision()

Retrieves class' revision.

Returns:

revision string