Package com.helger.css.parser

Class CSSCharStream

java.lang.Object

com.helger.css.parser.CSSCharStream

All Implemented Interfaces:

CharStream

public final class CSSCharStream
extends Object
implements CharStream

This class is only used internally as the source for the generated parsers.
An implementation of interface CharStream, where the stream is assumed to contain only ASCII characters (with java-like unicode escape processing).

Author:

Philip Helger

Constructor Summary

Constructors

Constructor	Description
CSSCharStream(Reader aReader)

Method Summary

Modifier and Type	Method	Description
void	adjustBeginLineColumn(int nNewLine, int newCol)	Method to adjust line and column numbers for the start of a token.
void	backup(int nAmount)	Retreat.
char	beginToken()
void	done()	Set buffers back to null when finished.
int	getBeginColumn()
int	getBeginLine()
int	getEndColumn()
int	getEndLine()
String	getImage()
char[]	getSuffix(int len)
int	getTabSize()
boolean	isTrackLineColumn()
char	readChar()	Read a character.
void	setTabSize(int i)	Set the tab size to use.
void	setTrackLineColumn(boolean tlc)	Enable or disable line number and column number tracking.

Methods inherited from class java.lang.Object

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

Constructor Detail

CSSCharStream

public CSSCharStream(@Nonnull
                     Reader aReader)

Method Detail

setTabSize

public void setTabSize(int i)

Description copied from interface: CharStream

Set the tab size to use.

Specified by:

setTabSize in interface CharStream

Parameters:

i - spaces per tab

getTabSize

public int getTabSize()

Specified by:

getTabSize in interface CharStream

Returns:

Current tab size.

beginToken

public char beginToken()
                throws IOException

Specified by:

beginToken in interface CharStream

Returns:

starting character for token.

Throws:

IOException - from readChar

readChar

public char readChar()
              throws IOException

Read a character.

Specified by:

readChar in interface CharStream

Returns:

The read character

Throws:

IOException - if an I/O error occurs

getBeginColumn

public int getBeginColumn()

Specified by:

getBeginColumn in interface CharStream

Returns:

column of token start

getBeginLine

public int getBeginLine()

Specified by:

getBeginLine in interface CharStream

Returns:

line number of token start

getEndColumn

public int getEndColumn()

Specified by:

getEndColumn in interface CharStream

Returns:

end column.

getEndLine

public int getEndLine()

Specified by:

getEndLine in interface CharStream

Returns:

end line.

backup

public void backup(int nAmount)

Retreat.

Specified by:

backup in interface CharStream

Parameters:

nAmount - Number of chars to back up.

getImage

public String getImage()

Specified by:

getImage in interface CharStream

Returns:

token image as String

getSuffix

public char[] getSuffix(int len)

Specified by:

getSuffix in interface CharStream

Returns:

suffix

done

public void done()

Set buffers back to null when finished.

Specified by:

done in interface CharStream

adjustBeginLineColumn

public void adjustBeginLineColumn(int nNewLine,
                                  int newCol)

Method to adjust line and column numbers for the start of a token.

Parameters:

nNewLine - line index

newCol - column index

isTrackLineColumn

public boolean isTrackLineColumn()

Specified by:

isTrackLineColumn in interface CharStream

Returns:

true if line number and column numbers should be tracked.

setTrackLineColumn

public void setTrackLineColumn(boolean tlc)

Description copied from interface: CharStream

Enable or disable line number and column number tracking.

Specified by:

setTrackLineColumn in interface CharStream

Parameters:

tlc - true to track it, false to not do it.