CharStream
public final class UCode_CharStream extends java.lang.Object implements CharStream
Modifier and Type | Field | Description |
---|---|---|
(package private) int |
available |
|
private int[] |
bufcolumn |
|
private char[] |
buffer |
|
private int[] |
bufline |
|
int |
bufpos |
|
(package private) int |
bufsize |
|
(package private) int |
charCnt |
|
(package private) int[] |
charOffset |
|
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 | Description |
---|---|
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) |
Modifier and Type | Method | Description |
---|---|---|
void |
adjustBeginLineColumn(int newLine,
int newCol) |
Method to adjust line and column numbers for the start of a token.
|
void |
backup(int amount) |
Backs up the input stream by amount steps.
|
char |
BeginToken() |
Returns the next character that marks the beginning of the next token.
|
void |
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() |
|
int |
getBeginColumn() |
Returns the column number of the first character for current token (being
matched after the last call to BeginTOken).
|
int |
getBeginLine() |
Returns the line number of the first character for current token (being
matched after the last call to BeginTOken).
|
int |
getBeginOffset() |
|
int |
getColumn() |
Deprecated.
|
int |
getEndColumn() |
Returns the column number of the last character for current token (being
matched after the last call to BeginTOken).
|
int |
getEndLine() |
Returns the line number of the last character for current token (being
matched after the last call to BeginTOken).
|
int |
getEndOffset() |
|
java.lang.String |
GetImage() |
Returns a string made up of characters from the marked token beginning
to the current buffer position.
|
int |
getLine() |
Deprecated.
|
char[] |
GetSuffix(int len) |
Returns an array of characters that make up the suffix of length 'len' for
the currently matched token.
|
char |
readChar() |
Returns the next character from the selected input.
|
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) |
int charCnt
int[] charOffset
public static final boolean staticFlag
public int bufpos
int bufsize
int available
int tokenBegin
private int[] bufline
private int[] bufcolumn
private int column
private int line
private boolean prevCharIsCR
private boolean prevCharIsLF
private java.io.Reader inputStream
private char[] nextCharBuf
private char[] buffer
private int maxNextCharInd
private int nextCharInd
private int inBuf
public UCode_CharStream(java.io.Reader dstream, int startline, int startcolumn, int buffersize)
public UCode_CharStream(java.io.Reader dstream, int startline, int startcolumn)
public UCode_CharStream(java.io.InputStream dstream, int startline, int startcolumn, int buffersize)
public UCode_CharStream(java.io.InputStream dstream, int startline, int startcolumn)
private void ExpandBuff(boolean wrapAround)
private void FillBuff() throws java.io.IOException
java.io.IOException
private char ReadChar() throws java.io.IOException
java.io.IOException
public char BeginToken() throws java.io.IOException
CharStream
BeginToken
in interface CharStream
java.io.IOException
private void UpdateLineColumn(char c)
public final char readChar() throws java.io.IOException
CharStream
readChar
in interface CharStream
java.io.IOException
@Deprecated public final int getColumn()
CharStream
getColumn
in interface CharStream
getEndColumn()
@Deprecated public final int getLine()
CharStream
getLine
in interface CharStream
getEndLine()
public final int getEndColumn()
CharStream
getEndColumn
in interface CharStream
public final int getEndLine()
CharStream
getEndLine
in interface CharStream
public final int getBeginColumn()
CharStream
getBeginColumn
in interface CharStream
public final int getBeginLine()
CharStream
getBeginLine
in interface CharStream
public final int getBeginOffset()
getBeginOffset
in interface CharStream
public final int getEndOffset()
getEndOffset
in interface CharStream
public final void backup(int amount)
CharStream
backup
in interface CharStream
public void ReInit(java.io.Reader dstream, int startline, int startcolumn, int buffersize)
ReInit
in interface CharStream
public void ReInit(java.io.Reader dstream, int startline, int startcolumn)
ReInit
in interface CharStream
public void ReInit(java.io.InputStream dstream, int startline, int startcolumn, int buffersize)
ReInit
in interface CharStream
public void ReInit(java.io.InputStream dstream, int startline, int startcolumn)
ReInit
in interface CharStream
public final java.lang.String GetImage()
CharStream
GetImage
in interface CharStream
public final char[] GetSuffix(int len)
CharStream
GetSuffix
in interface CharStream
public void Done()
CharStream
Done
in interface CharStream
public void adjustBeginLineColumn(int newLine, int newCol)
Apache Derby V10.14 Internals - Copyright © 2004,2018 The Apache Software Foundation. All Rights Reserved.