net.seninp.gi.sequitur

Class SAXRule

java.lang.Object

net.seninp.gi.sequitur.SAXRule

public class SAXRule
extends Object

The Rule. Adaption of Eibe Frank code for JMotif API.

Author:

Manfred Lerner, seninp

Field Summary

Fields

Modifier and Type	Field and Description
protected static ArrayList<GrammarRuleRecord>	arrRuleRecords Keeper for rules references.
protected int	count Counter keeps track of how many times the rule is used in the grammar.
protected int	index Index used for printing.
protected Set<Integer>	indexes This keeps rule indexes - once rule created or used, its placement position is extracted from the TerminalSymbol position and stored here.
protected int	level The rule level, used to assess the hierarchy.
protected static AtomicInteger	numRules This is static - the global rule enumerator counter.
protected int	ruleIndex The rule's number.
protected SAXGuard	theGuard Guard symbol to mark beginning and end of rule.
protected static ArrayList<SAXRule>	theRules Yet another, global static structure allowing fast rule access.

Constructor Summary

Constructors

Constructor and Description
SAXRule() Constructor.

Method Summary

Modifier and Type	Method and Description
void	addIndex(int position) Adds an index of the rule occurrence.
protected void	assignLevel() This traces the rule level.
SAXSymbol	first() Report the FIRST symbol of the rule.
int	getLevel()
ArrayList<GrammarRuleRecord>	getRuleRecords()
protected void	getSAXRules() Add-on to the original code by manfred and seninp.
SAXSymbol	last() Report the LAST symbol of the rule.
static String	printRules() Original getRules() method.
static void	reset() Cleans up data structures.
GrammarRules	toGrammarRulesData()

Methods inherited from class java.lang.Object

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

Field Detail

numRules

protected static AtomicInteger numRules

This is static - the global rule enumerator counter.

theRules

protected static final ArrayList<SAXRule> theRules

Yet another, global static structure allowing fast rule access.

arrRuleRecords

protected static ArrayList<GrammarRuleRecord> arrRuleRecords

Keeper for rules references.

theGuard

protected SAXGuard theGuard

Guard symbol to mark beginning and end of rule.

count

protected int count

Counter keeps track of how many times the rule is used in the grammar.

ruleIndex

protected int ruleIndex

The rule's number. Used for identification of non-terminals.

index

protected int index

Index used for printing.

level

protected int level

The rule level, used to assess the hierarchy.

indexes

protected Set<Integer> indexes

This keeps rule indexes - once rule created or used, its placement position is extracted from the TerminalSymbol position and stored here.

Constructor Detail

SAXRule

public SAXRule()

Constructor.

Method Detail

printRules

public static String printRules()

Original getRules() method. Prints out rules. Killing it will brake tests.

Returns:

the formatted rules string.

reset

public static void reset()

Cleans up data structures.

first

public SAXSymbol first()

Report the FIRST symbol of the rule.

Returns:

the FIRST rule's symbol.

last

public SAXSymbol last()

Report the LAST symbol of the rule.

Returns:

the LAST rule's symbol.

assignLevel

protected void assignLevel()

This traces the rule level.

getLevel

public int getLevel()

getRuleRecords

public ArrayList<GrammarRuleRecord> getRuleRecords()

addIndex

public void addIndex(int position)

Adds an index of the rule occurrence.

Parameters:

position - the rule position.

getSAXRules

protected void getSAXRules()

Add-on to the original code by manfred and seninp. This one similar to the original getRules() but populates and returns the array list of SAXRuleRecords.

toGrammarRulesData

public GrammarRules toGrammarRulesData()