org.gvsig.expressionevaluator.impl

Class AbstractLexicalAnalyzer

java.lang.Object

org.gvsig.expressionevaluator.impl.AbstractLexicalAnalyzer

All Implemented Interfaces:

LexicalAnalyzer

Direct Known Subclasses:

SQLLexicalAnalyzer

public abstract class AbstractLexicalAnalyzer
extends Object
implements LexicalAnalyzer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	AbstractLexicalAnalyzer.Buffer

Nested classes/interfaces inherited from interface org.gvsig.expressionevaluator.LexicalAnalyzer

LexicalAnalyzer.Token

Field Summary

Fields

Modifier and Type	Field and Description
protected AbstractLexicalAnalyzer.Buffer	buffer
protected static char	EOF
protected DefaultToken	token
protected Map<String,Integer>	tokens

Constructor Summary

Constructors

Constructor and Description
AbstractLexicalAnalyzer()
AbstractLexicalAnalyzer(String source)

Method Summary

Modifier and Type	Method and Description
protected char	getch()
protected int	getPosition()
protected abstract LexicalAnalyzer.Token	getToken()
protected boolean	isEOF()
LexicalAnalyzer.Token	look()
LexicalAnalyzer.Token	next()
protected void	parseNumber()
protected void	parseString()
protected void	pop_state()
protected void	push_state()
void	setSource(String source)
protected void	skipblanks()
protected void	ungetch()

Methods inherited from class java.lang.Object

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

Field Detail

EOF

protected static final char EOF

See Also:

Constant Field Values

buffer

protected final AbstractLexicalAnalyzer.Buffer buffer

token

protected final DefaultToken token

tokens

protected final Map<String,Integer> tokens

Constructor Detail

AbstractLexicalAnalyzer

public AbstractLexicalAnalyzer(String source)

AbstractLexicalAnalyzer

public AbstractLexicalAnalyzer()

Method Detail

setSource

public void setSource(String source)

Specified by:

setSource in interface LexicalAnalyzer

next

public LexicalAnalyzer.Token next()

Specified by:

next in interface LexicalAnalyzer

look

public LexicalAnalyzer.Token look()

Specified by:

look in interface LexicalAnalyzer

getToken

protected abstract LexicalAnalyzer.Token getToken()

push_state

protected void push_state()

pop_state

protected void pop_state()

getPosition

protected int getPosition()

isEOF

protected boolean isEOF()

skipblanks

protected void skipblanks()

getch

protected char getch()

ungetch

protected void ungetch()

parseString

protected void parseString()

parseNumber

protected void parseNumber()