Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.impl.sql.compile.UCode_CharStream

Modifier and Type	Field and Description
pack-priv int	available
private int[]	bufcolumn
private char[]	buffer
private int[]	bufline
public int	bufpos
pack-priv int	bufsize
pack-priv int	charCnt
pack-priv int[]	charOffset
private int	column
private int	inBuf
private Reader	inputStream
private int	line
private int	maxNextCharInd
private char[]	nextCharBuf
private int	nextCharInd
private boolean	prevCharIsCR
private boolean	prevCharIsLF
public static final boolean	staticFlag
pack-priv int	tokenBegin

Access	Constructor and Description
public	UCode_CharStream(Reader dstream, int startline, int startcolumn, int buffersize)
public	UCode_CharStream(Reader dstream, int startline, int startcolumn)
public	UCode_CharStream(InputStream dstream, int startline, int startcolumn, int buffersize)
public	UCode_CharStream(InputStream dstream, int startline, int startcolumn)

Method Summary

Modifier and Type	Method and Description
public void	adjustBeginLineColumn(int newLine, int newCol) Method to adjust line and column numbers for the start of a token.
public final void	backup(int amount) Implements org.apache.derby.impl.sql.compile.CharStream.backup. Backs up the input stream by amount steps.
public char	BeginToken() Implements org.apache.derby.impl.sql.compile.CharStream.BeginToken. Returns the next character that marks the beginning of the next token.
public void	Done() Implements org.apache.derby.impl.sql.compile.CharStream.Done. The lexer calls this function to indicate that it is done with the stream and hence implementations can free any resources held by this class.
private void	ExpandBuff(boolean wrapAround)
private void	FillBuff()
public final int	getBeginColumn() Implements org.apache.derby.impl.sql.compile.CharStream.getBeginColumn. Returns the column number of the first character for current token (being matched after the last call to BeginTOken).
public final int	getBeginLine() Implements org.apache.derby.impl.sql.compile.CharStream.getBeginLine. Returns the line number of the first character for current token (being matched after the last call to BeginTOken).
public final int	getBeginOffset() Implements org.apache.derby.impl.sql.compile.CharStream.getBeginOffset.
public final int	getColumn() Implements org.apache.derby.impl.sql.compile.CharStream.getColumn. Deprecated Returns the column position of the character last read.
public final int	getEndColumn() Implements org.apache.derby.impl.sql.compile.CharStream.getEndColumn. Returns the column number of the last character for current token (being matched after the last call to BeginTOken).
public final int	getEndLine() Implements org.apache.derby.impl.sql.compile.CharStream.getEndLine. Returns the line number of the last character for current token (being matched after the last call to BeginTOken).
public final int	getEndOffset() Implements org.apache.derby.impl.sql.compile.CharStream.getEndOffset.
public final String	GetImage() Implements org.apache.derby.impl.sql.compile.CharStream.GetImage. Returns a string made up of characters from the marked token beginning to the current buffer position.
public final int	getLine() Implements org.apache.derby.impl.sql.compile.CharStream.getLine. Deprecated Returns the line number of the character last read.
public final char[]	GetSuffix(int len) Implements org.apache.derby.impl.sql.compile.CharStream.GetSuffix. Returns an array of characters that make up the suffix of length 'len' for the currently matched token.
private char	ReadChar()
public final char	readChar() Implements org.apache.derby.impl.sql.compile.CharStream.readChar. Returns the next character from the selected input.
public void	ReInit(Reader dstream, int startline, int startcolumn, int buffersize) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.
public void	ReInit(Reader dstream, int startline, int startcolumn) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.
public void	ReInit(InputStream dstream, int startline, int startcolumn, int buffersize) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.
public void	ReInit(InputStream dstream, int startline, int startcolumn) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.
private void	UpdateLineColumn(char c)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

available	back to summary
pack-priv int available

bufcolumn	back to summary
private int[] bufcolumn

buffer	back to summary
private char[] buffer

bufline	back to summary
private int[] bufline

bufpos	back to summary
public int bufpos

bufsize	back to summary
pack-priv int bufsize

charCnt	back to summary
pack-priv int charCnt

charOffset	back to summary
pack-priv int[] charOffset

column	back to summary
private int column

inBuf	back to summary
private int inBuf

inputStream	back to summary
private Reader inputStream

line	back to summary
private int line

maxNextCharInd	back to summary
private int maxNextCharInd

nextCharBuf	back to summary
private char[] nextCharBuf

nextCharInd	back to summary
private int nextCharInd

prevCharIsCR	back to summary
private boolean prevCharIsCR

prevCharIsLF	back to summary
private boolean prevCharIsLF

staticFlag	back to summary
public static final boolean staticFlag

tokenBegin	back to summary
pack-priv int tokenBegin

UCode_CharStream	back to summary
public UCode_CharStream(Reader dstream, int startline, int startcolumn, int buffersize)

UCode_CharStream	back to summary
public UCode_CharStream(Reader dstream, int startline, int startcolumn)

UCode_CharStream	back to summary
public UCode_CharStream(InputStream dstream, int startline, int startcolumn, int buffersize)

UCode_CharStream	back to summary
public UCode_CharStream(InputStream dstream, int startline, int startcolumn)

Method Detail

adjustBeginLineColumn	back to summary
public void adjustBeginLineColumn(int newLine, int newCol) Method to adjust line and column numbers for the start of a token.

backup	back to summary
public final void backup(int amount) Implements org.apache.derby.impl.sql.compile.CharStream.backup. Doc from org.apache.derby.impl.sql.compile.CharStream.backup. Backs up the input stream by amount steps. Lexer calls this method if it had already read some characters, but could not use them to match a (longer) token. So, they will be used again as the prefix of the next token and it is the implemetation's responsibility to do this right.

backup

back to summary

public final void backup(int amount)

Implements org.apache.derby.impl.sql.compile.CharStream.backup.

Doc from org.apache.derby.impl.sql.compile.CharStream.backup.

Backs up the input stream by amount steps. Lexer calls this method if it had already read some characters, but could not use them to match a (longer) token. So, they will be used again as the prefix of the next token and it is the implemetation's responsibility to do this right.

BeginToken	back to summary
public char BeginToken() throws IOException Implements org.apache.derby.impl.sql.compile.CharStream.BeginToken. Doc from org.apache.derby.impl.sql.compile.CharStream.BeginToken. Returns the next character that marks the beginning of the next token. All characters must remain in the buffer between two successive calls to this method to implement backup correctly.

BeginToken

back to summary

public char BeginToken() throws IOException

Implements org.apache.derby.impl.sql.compile.CharStream.BeginToken.

Doc from org.apache.derby.impl.sql.compile.CharStream.BeginToken.

Returns the next character that marks the beginning of the next token. All characters must remain in the buffer between two successive calls to this method to implement backup correctly.

Done	back to summary
public void Done() Implements org.apache.derby.impl.sql.compile.CharStream.Done. Doc from org.apache.derby.impl.sql.compile.CharStream.Done. The lexer calls this function to indicate that it is done with the stream and hence implementations can free any resources held by this class. Again, the body of this function can be just empty and it will not affect the lexer's operation.

Done

back to summary

public void Done()

Implements org.apache.derby.impl.sql.compile.CharStream.Done.

Doc from org.apache.derby.impl.sql.compile.CharStream.Done.

The lexer calls this function to indicate that it is done with the stream and hence implementations can free any resources held by this class. Again, the body of this function can be just empty and it will not affect the lexer's operation.

ExpandBuff	back to summary
private void ExpandBuff(boolean wrapAround)

FillBuff	back to summary
private void FillBuff() throws IOException

getBeginColumn	back to summary
public final int getBeginColumn() Implements org.apache.derby.impl.sql.compile.CharStream.getBeginColumn. Doc from org.apache.derby.impl.sql.compile.CharStream.getBeginColumn. Returns the column number of the first character for current token (being matched after the last call to BeginTOken).

getBeginColumn

back to summary

public final int getBeginColumn()

Implements org.apache.derby.impl.sql.compile.CharStream.getBeginColumn.

Doc from org.apache.derby.impl.sql.compile.CharStream.getBeginColumn.

Returns the column number of the first character for current token (being matched after the last call to BeginTOken).

getBeginLine	back to summary
public final int getBeginLine() Implements org.apache.derby.impl.sql.compile.CharStream.getBeginLine. Doc from org.apache.derby.impl.sql.compile.CharStream.getBeginLine. Returns the line number of the first character for current token (being matched after the last call to BeginTOken).

getBeginLine

back to summary

public final int getBeginLine()

Implements org.apache.derby.impl.sql.compile.CharStream.getBeginLine.

Doc from org.apache.derby.impl.sql.compile.CharStream.getBeginLine.

Returns the line number of the first character for current token (being matched after the last call to BeginTOken).

getBeginOffset	back to summary
public final int getBeginOffset() Implements org.apache.derby.impl.sql.compile.CharStream.getBeginOffset.

getColumn back to summary

getColumn	back to summary
public final int getColumn() Implements org.apache.derby.impl.sql.compile.CharStream.getColumn. Doc from org.apache.derby.impl.sql.compile.CharStream.getColumn. Deprecated Returns the column position of the character last read. Annotations @Deprecated See Also `getEndColumn`

public final int getColumn()

Implements org.apache.derby.impl.sql.compile.CharStream.getColumn.

Doc from org.apache.derby.impl.sql.compile.CharStream.getColumn.

Deprecated

Returns the column position of the character last read.

Annotations

@Deprecated

See Also

getEndColumn

getEndColumn	back to summary
public final int getEndColumn() Implements org.apache.derby.impl.sql.compile.CharStream.getEndColumn. Doc from org.apache.derby.impl.sql.compile.CharStream.getEndColumn. Returns the column number of the last character for current token (being matched after the last call to BeginTOken).

getEndColumn

back to summary

public final int getEndColumn()

Implements org.apache.derby.impl.sql.compile.CharStream.getEndColumn.

Doc from org.apache.derby.impl.sql.compile.CharStream.getEndColumn.

Returns the column number of the last character for current token (being matched after the last call to BeginTOken).

getEndLine	back to summary
public final int getEndLine() Implements org.apache.derby.impl.sql.compile.CharStream.getEndLine. Doc from org.apache.derby.impl.sql.compile.CharStream.getEndLine. Returns the line number of the last character for current token (being matched after the last call to BeginTOken).

getEndLine

back to summary

public final int getEndLine()

Implements org.apache.derby.impl.sql.compile.CharStream.getEndLine.

Doc from org.apache.derby.impl.sql.compile.CharStream.getEndLine.

Returns the line number of the last character for current token (being matched after the last call to BeginTOken).

getEndOffset	back to summary
public final int getEndOffset() Implements org.apache.derby.impl.sql.compile.CharStream.getEndOffset.

GetImage	back to summary
public final String GetImage() Implements org.apache.derby.impl.sql.compile.CharStream.GetImage. Doc from org.apache.derby.impl.sql.compile.CharStream.GetImage. Returns a string made up of characters from the marked token beginning to the current buffer position. Implementations have the choice of returning anything that they want to. For example, for efficiency, one might decide to just return null, which is a valid implementation.

GetImage

back to summary

public final String GetImage()

Implements org.apache.derby.impl.sql.compile.CharStream.GetImage.

Doc from org.apache.derby.impl.sql.compile.CharStream.GetImage.

Returns a string made up of characters from the marked token beginning to the current buffer position. Implementations have the choice of returning anything that they want to. For example, for efficiency, one might decide to just return null, which is a valid implementation.

getLine back to summary

getLine	back to summary
public final int getLine() Implements org.apache.derby.impl.sql.compile.CharStream.getLine. Doc from org.apache.derby.impl.sql.compile.CharStream.getLine. Deprecated Returns the line number of the character last read. Annotations @Deprecated See Also `getEndLine`

public final int getLine()

Implements org.apache.derby.impl.sql.compile.CharStream.getLine.

Doc from org.apache.derby.impl.sql.compile.CharStream.getLine.

Deprecated

Returns the line number of the character last read.

Annotations

@Deprecated

See Also

getEndLine

GetSuffix	back to summary
public final char[] GetSuffix(int len) Implements org.apache.derby.impl.sql.compile.CharStream.GetSuffix. Doc from org.apache.derby.impl.sql.compile.CharStream.GetSuffix. Returns an array of characters that make up the suffix of length 'len' for the currently matched token. This is used to build up the matched string for use in actions in the case of MORE. A simple and inefficient implementation of this is as follows : { String t = GetImage(); return t.substring(t.length() - len, t.length()).toCharArray(); }

GetSuffix

back to summary

public final char[] GetSuffix(int len)

Implements org.apache.derby.impl.sql.compile.CharStream.GetSuffix.

Doc from org.apache.derby.impl.sql.compile.CharStream.GetSuffix.

Returns an array of characters that make up the suffix of length 'len' for the currently matched token. This is used to build up the matched string for use in actions in the case of MORE. A simple and inefficient implementation of this is as follows : { String t = GetImage(); return t.substring(t.length() - len, t.length()).toCharArray(); }

ReadChar	back to summary
private char ReadChar() throws IOException

readChar	back to summary
public final char readChar() throws IOException Implements org.apache.derby.impl.sql.compile.CharStream.readChar. Doc from org.apache.derby.impl.sql.compile.CharStream.readChar. Returns the next character from the selected input. The method of selecting the input is the responsibility of the class implementing this interface. Can throw any java.io.IOException.

readChar

back to summary

public final char readChar() throws IOException

Implements org.apache.derby.impl.sql.compile.CharStream.readChar.

Doc from org.apache.derby.impl.sql.compile.CharStream.readChar.

Returns the next character from the selected input. The method of selecting the input is the responsibility of the class implementing this interface. Can throw any java.io.IOException.

ReInit	back to summary
public void ReInit(Reader dstream, int startline, int startcolumn, int buffersize) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.

ReInit	back to summary
public void ReInit(Reader dstream, int startline, int startcolumn) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.

ReInit	back to summary
public void ReInit(InputStream dstream, int startline, int startcolumn, int buffersize) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.

ReInit	back to summary
public void ReInit(InputStream dstream, int startline, int startcolumn) Implements org.apache.derby.impl.sql.compile.CharStream.ReInit.

UpdateLineColumn	back to summary
private void UpdateLineColumn(char c)

public final Class UCode_CharStream

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail