com.helger.pgcc.parser

Class Expansion

java.lang.Object

com.helger.pgcc.parser.Expansion

Direct Known Subclasses:

AbstractExpRegularExpression, ExpAction, ExpChoice, ExpLookahead, ExpNonTerminal, ExpOneOrMore, ExpSequence, ExpTryBlock, ExpZeroOrMore, ExpZeroOrOne

public class Expansion
extends Object

Describes expansions - entities that may occur on the right hand sides of productions. This is the base class of a bunch of other more specific classes.

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	EOL
boolean	m_inMinimumSize This flag is used for bookkeeping by the minimumSize method in class ParseEngine.
long	m_myGeneration
Object	m_parent The parent of this expansion node.

Constructor Summary

Constructors

Constructor and Description
Expansion()

Method Summary

Modifier and Type	Method and Description
StringBuilder	dump(int indent, Set<? super Expansion> alreadyDumped)
protected static StringBuilder	dumpPrefix(int indent)
static long	getNextGenerationIndex()
int	hashCode() A reimplementing of Object.hashCode() to be deterministic.
static void	reInit()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

EOL

protected static final String EOL

m_parent

public Object m_parent

The parent of this expansion node. In case this is the top level expansion of the production it is a reference to the production node otherwise it is a reference to another Expansion node. In case this is the top level of a lookahead expansion,then the parent is null.

m_myGeneration

public long m_myGeneration

m_inMinimumSize

public boolean m_inMinimumSize

This flag is used for bookkeeping by the minimumSize method in class ParseEngine.

Constructor Detail

Expansion

public Expansion()

Method Detail

reInit

public static void reInit()

getNextGenerationIndex

public static long getNextGenerationIndex()

dumpPrefix

protected static StringBuilder dumpPrefix(int indent)

dump

@OverrideOnDemand
public StringBuilder dump(int indent,
                                             Set<? super Expansion> alreadyDumped)

Parameters:

indent - indentation level

alreadyDumped - what was already dumped?

Returns:

String

hashCode

public int hashCode()

A reimplementing of Object.hashCode() to be deterministic. This uses the line and column fields to generate an arbitrary number - we assume that this method is called only after line and column are set to their actual values.

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object