org.apache.flink.sql.parser.impl

Class SimpleCharStream

java.lang.Object

org.apache.flink.sql.parser.impl.SimpleCharStream

public class SimpleCharStream
extends Object

An implementation of interface CharStream, where the stream is assumed to contain only ASCII characters (without unicode processing).

Field Summary

Fields

Modifier and Type	Field and Description
protected int[]	bufcolumn
protected char[]	buffer
protected int[]	bufline
int	bufpos
protected int	column
protected int	inBuf
protected Reader	inputStream
protected int	line
protected int	maxNextCharInd
protected boolean	prevCharIsCR
protected boolean	prevCharIsLF
static boolean	staticFlag
protected int	tabSize

Constructor Summary

Constructors

Constructor and Description
SimpleCharStream(InputStream dstream)
SimpleCharStream(InputStream dstream, int startline, int startcolumn)
SimpleCharStream(InputStream dstream, int startline, int startcolumn, int buffersize)
SimpleCharStream(InputStream dstream, String encoding)
SimpleCharStream(InputStream dstream, String encoding, int startline, int startcolumn)
SimpleCharStream(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize)
SimpleCharStream(Reader dstream)
SimpleCharStream(Reader dstream, int startline, int startcolumn)
SimpleCharStream(Reader dstream, int startline, int startcolumn, int buffersize)

Method Summary

Modifier and Type	Method and Description
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()
protected void	ExpandBuff(boolean wrapAround)
protected void	FillBuff()
int	getBeginColumn()
int	getBeginLine()
int	getColumn() Deprecated.
int	getEndColumn()
int	getEndLine()
String	GetImage()
int	getLine() Deprecated.
char[]	GetSuffix(int len)
protected int	getTabSize(int i)
char	readChar()
void	ReInit(InputStream dstream)
void	ReInit(InputStream dstream, int startline, int startcolumn)
void	ReInit(InputStream dstream, int startline, int startcolumn, int buffersize)
void	ReInit(InputStream dstream, String encoding)
void	ReInit(InputStream dstream, String encoding, int startline, int startcolumn)
void	ReInit(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize)
void	ReInit(Reader dstream)
void	ReInit(Reader dstream, int startline, int startcolumn)
void	ReInit(Reader dstream, int startline, int startcolumn, int buffersize)
protected void	setTabSize(int i)
protected 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

bufline

protected int[] bufline

bufcolumn

protected int[] bufcolumn

column

protected int column

line

protected int line

prevCharIsCR

protected boolean prevCharIsCR

prevCharIsLF

protected boolean prevCharIsLF

inputStream

protected Reader inputStream

buffer

protected char[] buffer

maxNextCharInd

protected int maxNextCharInd

inBuf

protected int inBuf

tabSize

protected int tabSize

Constructor Detail

SimpleCharStream

public SimpleCharStream(Reader dstream,
                        int startline,
                        int startcolumn,
                        int buffersize)

SimpleCharStream

public SimpleCharStream(Reader dstream,
                        int startline,
                        int startcolumn)

SimpleCharStream

public SimpleCharStream(Reader dstream)

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                        String encoding,
                        int startline,
                        int startcolumn,
                        int buffersize)
                 throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                        int startline,
                        int startcolumn,
                        int buffersize)

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                        String encoding,
                        int startline,
                        int startcolumn)
                 throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                        int startline,
                        int startcolumn)

SimpleCharStream

public SimpleCharStream(InputStream dstream,
                        String encoding)
                 throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

SimpleCharStream

public SimpleCharStream(InputStream dstream)

Method Detail

setTabSize

protected void setTabSize(int i)

getTabSize

protected int getTabSize(int i)

ExpandBuff

protected void ExpandBuff(boolean wrapAround)

FillBuff

protected void FillBuff()
                 throws IOException

Throws:

IOException

BeginToken

public char BeginToken()
                throws IOException

Throws:

IOException

UpdateLineColumn

protected void UpdateLineColumn(char c)

readChar

public char readChar()
              throws IOException

Throws:

IOException

getColumn

public int getColumn()

Deprecated.

See Also:

getEndColumn()

getLine

public int getLine()

Deprecated.

See Also:

getEndLine()

getEndColumn

public int getEndColumn()

getEndLine

public int getEndLine()

getBeginColumn

public int getBeginColumn()

getBeginLine

public int getBeginLine()

backup

public void backup(int amount)

ReInit

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

ReInit

public void ReInit(Reader dstream,
                   int startline,
                   int startcolumn)

ReInit

public void ReInit(Reader dstream)

ReInit

public void ReInit(InputStream dstream,
                   String encoding,
                   int startline,
                   int startcolumn,
                   int buffersize)
            throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

ReInit

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

ReInit

public void ReInit(InputStream dstream,
                   String encoding)
            throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream)

ReInit

public void ReInit(InputStream dstream,
                   String encoding,
                   int startline,
                   int startcolumn)
            throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream,
                   int startline,
                   int startcolumn)

GetImage

public String GetImage()

GetSuffix

public char[] GetSuffix(int len)

Done

public void Done()

adjustBeginLineColumn

public void adjustBeginLineColumn(int newLine,
                                  int newCol)

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