com.helger.pgcc.parser

Class AbstractExpRegularExpression

java.lang.Object

com.helger.pgcc.parser.Expansion

com.helger.pgcc.parser.AbstractExpRegularExpression

Direct Known Subclasses:

ExpRCharacterList, ExpRChoice, ExpREndOfFile, ExpRJustName, ExpROneOrMore, ExpRRepetitionRange, ExpRSequence, ExpRStringLiteral, ExpRZeroOrMore, ExpRZeroOrOne

public abstract class AbstractExpRegularExpression
extends Expansion

Describes regular expressions.

Field Summary

Fields

Modifier and Type	Field and Description
String	m_label The label of the regular expression (if any).
List<Token>	m_lhsTokens The LHS to which the token value of the regular expression is assigned.
int	m_ordinal The ordinal value assigned to the regular expression.
boolean	m_private_rexp This flag is set if the regular expression has a label prefixed with the # symbol - this indicates that the purpose of the regular expression is solely for defining other regular expressions.
Token	m_rhsToken We now allow qualified access to token members.
TokenProduction	m_tpContext If this is a top-level regular expression (nested directly within a TokenProduction), then this field point to that TokenProduction object.

Fields inherited from class com.helger.pgcc.parser.Expansion

EOL, m_inMinimumSize, m_myGeneration, m_parent

Constructor Summary

Constructors

Constructor and Description
AbstractExpRegularExpression()

Method Summary

Modifier and Type	Method and Description
boolean	canMatchAnyChar()
StringBuilder	dump(int indent, Set<? super Expansion> alreadyDumped)
abstract Nfa	generateNfa(boolean ignoreCase)

Methods inherited from class com.helger.pgcc.parser.Expansion

dumpPrefix, getNextGenerationIndex, hashCode, reInit, toString

Methods inherited from class java.lang.Object

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

Field Detail

m_label

public String m_label

The label of the regular expression (if any). If no label is present, this is set to "".

m_ordinal

public int m_ordinal

The ordinal value assigned to the regular expression. It is used for internal processing and passing information between the parser and the lexical analyzer.

m_lhsTokens

public List<Token> m_lhsTokens

The LHS to which the token value of the regular expression is assigned. In case there is no LHS, then the list remains empty.

m_rhsToken

public Token m_rhsToken

We now allow qualified access to token members. Store it here.

m_private_rexp

public boolean m_private_rexp

This flag is set if the regular expression has a label prefixed with the # symbol - this indicates that the purpose of the regular expression is solely for defining other regular expressions.

m_tpContext

public TokenProduction m_tpContext

If this is a top-level regular expression (nested directly within a TokenProduction), then this field point to that TokenProduction object.

Constructor Detail

AbstractExpRegularExpression

public AbstractExpRegularExpression()

Method Detail

generateNfa

public abstract Nfa generateNfa(boolean ignoreCase)

canMatchAnyChar

public boolean canMatchAnyChar()

dump

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

Overrides:

dump in class Expansion

Parameters:

indent - indentation level

alreadyDumped - what was already dumped?

Returns:

String