org.nfunk.jep
Class JavaCharStream

java.lang.Object
  org.nfunk.jep.JavaCharStream

public class JavaCharStream
extends java.lang.Object

An implementation of interface CharStream, where the stream is assumed to contain only ASCII characters (with java-like unicode escape processing).

Field Summary

protected int[]	bufcolumn
protected char[]	buffer
protected int[]	bufline
int	bufpos
protected int	column
protected int	inBuf
protected java.io.Reader	inputStream
protected int	line
protected int	maxNextCharInd
protected char[]	nextCharBuf
protected int	nextCharInd
protected boolean	prevCharIsCR
protected boolean	prevCharIsLF
static boolean	staticFlag

Constructor Summary

JavaCharStream(java.io.InputStream dstream)

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

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

JavaCharStream(java.io.Reader dstream)

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

JavaCharStream(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.
protected void	AdjustBuffSize()
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()
java.lang.String	GetImage()
int	getLine() Deprecated.
char[]	GetSuffix(int len)
protected char	ReadByte()
char	readChar()
void	ReInit(java.io.InputStream dstream)
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)
void	ReInit(java.io.Reader dstream, int startline, int startcolumn)
void	ReInit(java.io.Reader dstream, int startline, int startcolumn, int buffersize)
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 java.io.Reader inputStream

nextCharBuf

protected char[] nextCharBuf

buffer

protected char[] buffer

maxNextCharInd

protected int maxNextCharInd

nextCharInd

protected int nextCharInd

inBuf

protected int inBuf

Constructor Detail

JavaCharStream

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

JavaCharStream

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

JavaCharStream

public JavaCharStream(java.io.Reader dstream)

JavaCharStream

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

JavaCharStream

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

JavaCharStream

public JavaCharStream(java.io.InputStream dstream)

Method Detail

ExpandBuff

protected void ExpandBuff(boolean wrapAround)

FillBuff

protected void FillBuff()
                 throws java.io.IOException

Throws:

java.io.IOException

ReadByte

protected char ReadByte()
                 throws java.io.IOException

Throws:

java.io.IOException

BeginToken

public char BeginToken()
                throws java.io.IOException

Throws:

java.io.IOException

AdjustBuffSize

protected void AdjustBuffSize()

UpdateLineColumn

protected void UpdateLineColumn(char c)

readChar

public char readChar()
              throws java.io.IOException

Throws:

java.io.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(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.Reader dstream)

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)

ReInit

public void ReInit(java.io.InputStream dstream)

GetImage

public java.lang.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.