org.apache.directory.shared.asn1.ber.grammar
Class AbstractGrammar

java.lang.Object
  org.apache.directory.shared.asn1.ber.grammar.AbstractGrammar

All Implemented Interfaces:

IGrammar

public abstract class AbstractGrammar
extends Object
implements IGrammar

The abstract IGrammar which is the Mother of all the grammars. It contains the transitions table.

Version:

$Rev: 912399 $, $Date: 2010-02-21 21:52:31 +0100 (Dim, 21 fév 2010) $

Author:

Apache Directory Project

Field Summary

protected String	name The grammar name
protected IStates	statesEnum The grammar's states
protected GrammarTransition[][]	transitions Table of transitions.

Constructor Summary

AbstractGrammar()
Default constructor

Method Summary

void	executeAction(IAsn1Container container) The main function.
String	getName() Return the grammar's name
IStates	getStatesEnum() Get the states of the current grammar
GrammarTransition	getTransition(int state, int tag) Get the transition associated with the state and tag
void	setName(String name) Set the grammar's name
void	setStatesEnum(IStates statesEnum) Set the states for this grammar

Methods inherited from class java.lang.Object

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

Field Detail

transitions

protected GrammarTransition[][] transitions

Table of transitions. It's a two dimension array, the first dimension indice the states, the second dimension indices the Tag value, so it is 256 wide.

name

protected String name

The grammar name

statesEnum

protected IStates statesEnum

The grammar's states

Constructor Detail

AbstractGrammar

public AbstractGrammar()

Default constructor

Method Detail

getName

public String getName()

Return the grammar's name

Specified by:

getName in interface IGrammar

Returns:

The grammar name

setName

public void setName(String name)

Set the grammar's name

Specified by:

setName in interface IGrammar

Parameters:

name - The new grammar name

getTransition

public GrammarTransition getTransition(int state,
                                       int tag)

Get the transition associated with the state and tag

Parameters:

state - The current state

tag - The current tag

Returns:

A valid transition if any, or null.

executeAction

public void executeAction(IAsn1Container container)
                   throws DecoderException

The main function. This is where an action is executed. If the action is null, nothing is done.

Specified by:

executeAction in interface IGrammar

Parameters:

container - The Asn1Container

Throws:

DecoderException - Thrown if anything went wrong

getStatesEnum

public IStates getStatesEnum()

Get the states of the current grammar

Specified by:

getStatesEnum in interface IGrammar

Returns:

Returns the statesEnum.

setStatesEnum

public void setStatesEnum(IStates statesEnum)

Set the states for this grammar

Parameters:

statesEnum - The statesEnum to set.