org.gvsig.expressionevaluator.spi

Class AbstractLexicalAnalyzer

java.lang.Object

org.gvsig.expressionevaluator.spi.AbstractLexicalAnalyzer

All Implemented Interfaces:

java.lang.Cloneable, LexicalAnalyzer

Direct Known Subclasses:

SQLLexicalAnalyzer

public abstract class AbstractLexicalAnalyzer
extends java.lang.Object
implements LexicalAnalyzer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	AbstractLexicalAnalyzer.Buffer
protected class	AbstractLexicalAnalyzer.DefaultToken
static class	AbstractLexicalAnalyzer.RowCol

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 LexicalAnalyzer.Token	token
protected java.util.Map<java.lang.String,java.lang.Integer>	tokens
protected boolean	useBracketsForIdentifiers

Constructor Summary

Constructors

Constructor and Description
AbstractLexicalAnalyzer()
AbstractLexicalAnalyzer(java.lang.String source)

Method Summary

Modifier and Type	Method and Description
LexicalAnalyzer	clone() Creates a copy of the object.
protected LexicalAnalyzer.Token	createToken()
void	drop_state()
protected char	getch()
int	getColumn()
int	getLine()
int	getMaxColumn()
int	getMaxLine()
int	getMaxPosition()
int	getPosition()
java.lang.String	getSource()
java.lang.String	getSourceContext()
protected abstract LexicalAnalyzer.Token	getToken()
boolean	getUseBracketsForIdentifiers()
boolean	isEOF()
LexicalAnalyzer.Token	look()
protected char	lookch()
LexicalAnalyzer.Token	next()
protected void	parseDMSNumber()
protected void	parseNumber()
protected void	parseString()
void	restore_state()
void	save_state()
void	setSource(java.lang.String source)
void	setUseBracketsForIdentifiers(boolean useBracketsForIdentifiers)
protected void	skipblanks()
protected void	ungetch()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.gvsig.tools.lang.Cloneable

cloneQuietly, cloneQuietly

Field Detail

EOF

protected static final char EOF

See Also:

Constant Field Values

buffer

protected AbstractLexicalAnalyzer.Buffer buffer

token

protected LexicalAnalyzer.Token token

tokens

protected java.util.Map<java.lang.String,java.lang.Integer> tokens

useBracketsForIdentifiers

protected boolean useBracketsForIdentifiers

Constructor Detail

AbstractLexicalAnalyzer

public AbstractLexicalAnalyzer(java.lang.String source)

AbstractLexicalAnalyzer

public AbstractLexicalAnalyzer()

Method Detail

createToken

protected LexicalAnalyzer.Token createToken()

clone

public LexicalAnalyzer clone()
                      throws java.lang.CloneNotSupportedException

Description copied from interface: Cloneable

Creates a copy of the object.

Specified by:

clone in interface LexicalAnalyzer

Overrides:

clone in class java.lang.Object

Returns:

a copy of the object

Throws:

java.lang.CloneNotSupportedException - if the instance of the object cannot be cloned. As this is extending Cloneable so its sure it implements it, so this exception may be used for problems on specific object instances.

See Also:

Object#clone()}.

setSource

public void setSource(java.lang.String source)

Specified by:

setSource in interface LexicalAnalyzer

getSource

public java.lang.String getSource()

Specified by:

getSource 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()

save_state

public void save_state()

Specified by:

save_state in interface LexicalAnalyzer

restore_state

public void restore_state()

Specified by:

restore_state in interface LexicalAnalyzer

drop_state

public void drop_state()

Specified by:

drop_state in interface LexicalAnalyzer

getPosition

public int getPosition()

Specified by:

getPosition in interface LexicalAnalyzer

getMaxPosition

public int getMaxPosition()

Specified by:

getMaxPosition in interface LexicalAnalyzer

getLine

public int getLine()

Specified by:

getLine in interface LexicalAnalyzer

getMaxLine

public int getMaxLine()

Specified by:

getMaxLine in interface LexicalAnalyzer

getColumn

public int getColumn()

Specified by:

getColumn in interface LexicalAnalyzer

getMaxColumn

public int getMaxColumn()

Specified by:

getMaxColumn in interface LexicalAnalyzer

isEOF

public boolean isEOF()

Specified by:

isEOF in interface LexicalAnalyzer

skipblanks

protected void skipblanks()

lookch

protected char lookch()

getch

protected char getch()

ungetch

protected void ungetch()

parseString

protected void parseString()

parseDMSNumber

protected void parseDMSNumber()

parseNumber

protected void parseNumber()

setUseBracketsForIdentifiers

public void setUseBracketsForIdentifiers(boolean useBracketsForIdentifiers)

Specified by:

setUseBracketsForIdentifiers in interface LexicalAnalyzer

getUseBracketsForIdentifiers

public boolean getUseBracketsForIdentifiers()

Specified by:

getUseBracketsForIdentifiers in interface LexicalAnalyzer

getSourceContext

public java.lang.String getSourceContext()

Specified by:

getSourceContext in interface LexicalAnalyzer