Package org.drools.mvel.parser

Class SimpleCharStream

java.lang.Object

org.drools.mvel.parser.AbstractCharStream

org.drools.mvel.parser.SimpleCharStream

All Implemented Interfaces:

CharStream

public class SimpleCharStream
extends AbstractCharStream

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	Description
protected Provider	inputStream

Fields inherited from class org.drools.mvel.parser.AbstractCharStream

available, bufcolumn, buffer, bufline, bufpos, bufsize, column, DEFAULT_BUF_SIZE, inBuf, line, maxNextCharInd, nextCharBuf, nextCharInd, prevCharIsCR, prevCharIsLF, tokenBegin

Constructor Summary

Constructors

Constructor	Description
SimpleCharStream(Provider dstream)	Constructor.
SimpleCharStream(Provider dstream, int startline, int startcolumn)	Constructor.
SimpleCharStream(Provider dstream, int startline, int startcolumn, int buffersize)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected void	fillBuff()
char	readChar()	Read a character.
void	reInit(Provider dstream)	Reinitialise.
void	reInit(Provider dstream, int startline, int startcolumn)	Reinitialise.
void	reInit(Provider dstream, int startline, int startcolumn, int buffersize)	Reinitialise.
protected void	streamClose()
protected int	streamRead(char[] buffer, int offset, int len)

Methods inherited from class org.drools.mvel.parser.AbstractCharStream

adjustBeginLineColumn, backup, beginToken, done, expandBuff, getBeginColumn, getBeginLine, getEndColumn, getEndLine, getImage, getSuffix, getTabSize, isTrackLineColumn, reInit, setTabSize, setTrackLineColumn, updateLineColumn

Methods inherited from class java.lang.Object

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

Field Detail

inputStream

protected Provider inputStream

Constructor Detail

SimpleCharStream

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

Constructor.

SimpleCharStream

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

Constructor.

SimpleCharStream

public SimpleCharStream(Provider dstream)

Constructor.

Method Detail

streamRead

protected int streamRead(char[] buffer,
                         int offset,
                         int len)
                  throws IOException

Specified by:

streamRead in class AbstractCharStream

Throws:

IOException

streamClose

protected void streamClose()
                    throws IOException

Specified by:

streamClose in class AbstractCharStream

Throws:

IOException

fillBuff

protected void fillBuff()
                 throws IOException

Overrides:

fillBuff in class AbstractCharStream

Throws:

IOException

readChar

public char readChar()
              throws IOException

Read a character.

Specified by:

readChar in interface CharStream

Overrides:

readChar in class AbstractCharStream

Returns:

the next character from the selected input

Throws:

IOException - on IO error

reInit

public void reInit(Provider dstream,
                   int startline,
                   int startcolumn,
                   int buffersize)

Reinitialise.

reInit

public void reInit(Provider dstream,
                   int startline,
                   int startcolumn)

Reinitialise.

reInit

public void reInit(Provider dstream)

Reinitialise.