Package com.yahoo.prelude.semantics.parser

Class SimpleCharStream

java.lang.Object

com.yahoo.prelude.semantics.parser.AbstractCharStream

com.yahoo.prelude.semantics.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 inherited from class com.yahoo.prelude.semantics.parser.AbstractCharStream

available, buffer, bufpos, bufsize, DEFAULT_BUF_SIZE, inBuf, maxNextCharInd, tokenBegin

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
void	reInit(InputStream dstream, String encoding)	Reinitialise.
void	reInit(InputStream dstream, String encoding, int startline, int startcolumn)	Reinitialise.
void	reInit(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize)	Reinitialise.
void	reInit(Reader dstream)	Reinitialise.
void	reInit(Reader dstream, int startline, int startcolumn)	Reinitialise.
void	reInit(Reader dstream, int startline, int startcolumn, int buffersize)	Reinitialise.
protected void	streamClose()	Close the underlying stream.
protected int	streamRead(char[] aBuf, int nOfs, int nLen)	Read from the underlying stream.

Methods inherited from class com.yahoo.prelude.semantics.parser.AbstractCharStream

adjustBeginLineColumn, backup, beginToken, done, expandBuff, fillBuff, getBeginColumn, getBeginLine, getBufSizeAfterExpansion, getColumn, getEndColumn, getEndLine, getImage, getLine, getSuffix, getTabSize, internalAdjustBuffSize, internalSetBufLineColumn, internalUpdateLineColumn, isTrackLineColumn, readChar, reInit, setTabSize, setTrackLineColumn

Methods inherited from class java.lang.Object

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

Constructor Details

SimpleCharStream

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

Constructor.

SimpleCharStream

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

Constructor.

SimpleCharStream

public SimpleCharStream(Reader dstream)

Constructor.

SimpleCharStream

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

Constructor.

Throws:

UnsupportedEncodingException

SimpleCharStream

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

Constructor.

Throws:

UnsupportedEncodingException

SimpleCharStream

public SimpleCharStream(InputStream dstream,
 String encoding)
                 throws UnsupportedEncodingException

Constructor.

Throws:

UnsupportedEncodingException

Method Details

reInit

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

Reinitialise.

reInit

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

Reinitialise.

reInit

public void reInit(Reader dstream)

Reinitialise.

reInit

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

Reinitialise.

Throws:

UnsupportedEncodingException

reInit

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

Reinitialise.

Throws:

UnsupportedEncodingException

reInit

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

Reinitialise.

Throws:

UnsupportedEncodingException

streamRead

protected int streamRead(char[] aBuf,
 int nOfs,
 int nLen)
                  throws IOException

Description copied from class: AbstractCharStream

Read from the underlying stream.

Specified by:

streamRead in class AbstractCharStream

Parameters:

aBuf - the buffer to be filled

nOfs - The offset into the buffer. 0-based

nLen - Number of chars to read.

Returns:

Number of effective chars read, or -1 on error.

Throws:

IOException

streamClose

protected void streamClose()
                    throws IOException

Description copied from class: AbstractCharStream

Close the underlying stream.

Specified by:

streamClose in class AbstractCharStream

Throws:

IOException - If closing fails.