org.apache.derby.impl.tools.ij
Class UCode_CharStream

java.lang.Object
  org.apache.derby.impl.tools.ij.UCode_CharStream

All Implemented Interfaces:

org.apache.derby.impl.tools.ij.CharStream

public final class UCode_CharStream
extends java.lang.Object
implements org.apache.derby.impl.tools.ij.CharStream

An implementation of interface CharStream, where the stream is assumed to contain only Unicode characters.

Field Summary

(package private) int	available
private int[]	bufcolumn
private char[]	buffer
private int[]	bufline
int	bufpos
(package private) int	bufsize
private int	column
private int	inBuf
private java.io.Reader	inputStream
private int	line
private int	maxNextCharInd
private char[]	nextCharBuf
private int	nextCharInd
private boolean	prevCharIsCR
private boolean	prevCharIsLF
static boolean	staticFlag
(package private) int	tokenBegin

Constructor Summary

UCode_CharStream(java.io.InputStream dstream, int startline, int startcolumn)

UCode_CharStream(java.io.InputStream dstream, int startline, int startcolumn, int buffersize)

UCode_CharStream(java.io.Reader dstream, int startline, int startcolumn)

UCode_CharStream(java.io.Reader dstream, int startline, int startcolumn, int buffersize)

Method Summary

void	adjustBeginLineColumn(int newLine, int newCol) Method to adjust line and column numbers for the start of a token.
void	backup(int amount)
char	BeginToken()
void	Done()
private void	ExpandBuff(boolean wrapAround)
private void	FillBuff()
int	getBeginColumn()
int	getBeginLine()
int	getColumn() Deprecated.
int	getEndColumn()
int	getEndLine()
java.lang.String	GetImage()
int	getLine() Deprecated.
char[]	GetSuffix(int len)
char	readChar()
private char	ReadChar()
void	ReInit(java.io.InputStream dstream, int startline, int startcolumn)
void	ReInit(java.io.InputStream dstream, int startline, int startcolumn, int buffersize)
void	ReInit(java.io.Reader dstream, int startline, int startcolumn)
void	ReInit(java.io.Reader dstream, int startline, int startcolumn, int buffersize)
private void	UpdateLineColumn(char c)

Methods inherited from class java.lang.Object

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

Field Detail

staticFlag

public static final boolean staticFlag

See Also:

Constant Field Values

bufpos

public int bufpos

bufsize

int bufsize

available

int available

tokenBegin

int tokenBegin

bufline

private int[] bufline

bufcolumn

private int[] bufcolumn

column

private int column

line

private int line

prevCharIsCR

private boolean prevCharIsCR

prevCharIsLF

private boolean prevCharIsLF

inputStream

private java.io.Reader inputStream

nextCharBuf

private char[] nextCharBuf

buffer

private char[] buffer

maxNextCharInd

private int maxNextCharInd

nextCharInd

private int nextCharInd

inBuf

private int inBuf

Constructor Detail

UCode_CharStream

public UCode_CharStream(java.io.Reader dstream,
                        int startline,
                        int startcolumn,
                        int buffersize)

UCode_CharStream

public UCode_CharStream(java.io.Reader dstream,
                        int startline,
                        int startcolumn)

UCode_CharStream

public UCode_CharStream(java.io.InputStream dstream,
                        int startline,
                        int startcolumn,
                        int buffersize)

UCode_CharStream

public UCode_CharStream(java.io.InputStream dstream,
                        int startline,
                        int startcolumn)

Method Detail

ExpandBuff

private final void ExpandBuff(boolean wrapAround)

FillBuff

private final void FillBuff()
                     throws java.io.IOException

Throws:

java.io.IOException

ReadChar

private final char ReadChar()
                     throws java.io.IOException

Throws:

java.io.IOException

BeginToken

public char BeginToken()
                throws java.io.IOException

Specified by:

BeginToken in interface org.apache.derby.impl.tools.ij.CharStream

Throws:

java.io.IOException

UpdateLineColumn

private final void UpdateLineColumn(char c)

readChar

public final char readChar()
                    throws java.io.IOException

Specified by:

readChar in interface org.apache.derby.impl.tools.ij.CharStream

Throws:

java.io.IOException

getColumn

public final int getColumn()

Deprecated.

Specified by:

getColumn in interface org.apache.derby.impl.tools.ij.CharStream

See Also:

getEndColumn()

getLine

public final int getLine()

Deprecated.

Specified by:

getLine in interface org.apache.derby.impl.tools.ij.CharStream

See Also:

getEndLine()

getEndColumn

public final int getEndColumn()

Specified by:

getEndColumn in interface org.apache.derby.impl.tools.ij.CharStream

getEndLine

public final int getEndLine()

Specified by:

getEndLine in interface org.apache.derby.impl.tools.ij.CharStream

getBeginColumn

public final int getBeginColumn()

Specified by:

getBeginColumn in interface org.apache.derby.impl.tools.ij.CharStream

getBeginLine

public final int getBeginLine()

Specified by:

getBeginLine in interface org.apache.derby.impl.tools.ij.CharStream

backup

public final void backup(int amount)

Specified by:

backup in interface org.apache.derby.impl.tools.ij.CharStream

ReInit

public void ReInit(java.io.Reader dstream,
                   int startline,
                   int startcolumn,
                   int buffersize)

ReInit

public void ReInit(java.io.Reader dstream,
                   int startline,
                   int startcolumn)

ReInit

public void ReInit(java.io.InputStream dstream,
                   int startline,
                   int startcolumn,
                   int buffersize)

ReInit

public void ReInit(java.io.InputStream dstream,
                   int startline,
                   int startcolumn)

GetImage

public final java.lang.String GetImage()

Specified by:

GetImage in interface org.apache.derby.impl.tools.ij.CharStream

GetSuffix

public final char[] GetSuffix(int len)

Specified by:

GetSuffix in interface org.apache.derby.impl.tools.ij.CharStream

Done

public void Done()

Specified by:

Done in interface org.apache.derby.impl.tools.ij.CharStream

adjustBeginLineColumn

public void adjustBeginLineColumn(int newLine,
                                  int newCol)

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