net.sf.parcinj
Class Sequence<P extends Processor>

java.lang.Object
  net.sf.parcinj.AbstractSymbol<P>
      net.sf.parcinj.Sequence<P>

All Implemented Interfaces:

Symbol<P>

public class Sequence<P extends Processor>
extends AbstractSymbol<P>

Sequence of symbols.

Field Summary

protected java.util.List<Symbol<P>>

_symbols

Constructor Summary

Sequence()
Creates an empty sequence.

Sequence(Symbol<P> firstSymbol)
Creates a sequence with one symbol.

Method Summary

void	addSymbol(Symbol<P> symbol) Adds the specified symbol.
void	doProcess(TokenIterator iterator, P processor) Processes this sequence by processing symbol by symbol.
AbstractSymbol<P>	followedBy(Symbol<P> symbol) Appends the specified symbol to this sequence.
MatchingResult	matches(Token token) Returns MatchingResult.OK if either the sequence is empty or the first symbol matches the specified token.

Methods inherited from class net.sf.parcinj.AbstractSymbol

oneOrMoreTimes, optional, or, process, zeroOrMoreTimes, zeroOrMoreTimesSeparatedBy

Methods inherited from class java.lang.Object

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

Field Detail

_symbols

protected final java.util.List<Symbol<P extends Processor>> _symbols

Constructor Detail

Sequence

public Sequence()

Creates an empty sequence.

Sequence

public Sequence(Symbol<P> firstSymbol)

Creates a sequence with one symbol.

Method Detail

followedBy

public AbstractSymbol<P> followedBy(Symbol<P> symbol)

Appends the specified symbol to this sequence.

Specified by:

followedBy in interface Symbol<P extends Processor>

Overrides:

followedBy in class AbstractSymbol<P extends Processor>

Returns:

this.

matches

public MatchingResult matches(Token token)

Returns MatchingResult.OK if either the sequence is empty or the first symbol matches the specified token.

Parameters:

token - Token to be checked. Will be null if beyond last token.

doProcess

public void doProcess(TokenIterator iterator,
                      P processor)

Processes this sequence by processing symbol by symbol. For each symbol Symbol.process(TokenIterator, Processor) is invoked.

Specified by:

doProcess in class AbstractSymbol<P extends Processor>

processor - Processor who does the actual processing.

addSymbol

public void addSymbol(Symbol<P> symbol)

Adds the specified symbol.