org.pentaho.reporting.libraries.formula.parser
Class JavaCharStream

java.lang.Object
  extended by org.pentaho.reporting.libraries.formula.parser.JavaCharStream

public class JavaCharStream
extends Object

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


Field Summary
 int bufpos
          Position in buffer.
static boolean staticFlag
          Whether parser is static.
 
Constructor Summary
JavaCharStream(InputStream dstream)
          Constructor.
JavaCharStream(InputStream dstream, int startline, int startcolumn)
          Constructor.
JavaCharStream(InputStream dstream, int startline, int startcolumn, int buffersize)
          Constructor.
JavaCharStream(InputStream dstream, String encoding)
          Constructor.
JavaCharStream(InputStream dstream, String encoding, int startline, int startcolumn)
          Constructor.
JavaCharStream(InputStream dstream, String encoding, int startline, int startcolumn, int buffersize)
          Constructor.
JavaCharStream(Reader dstream)
          Constructor.
JavaCharStream(Reader dstream, int startline, int startcolumn)
          Constructor.
JavaCharStream(Reader dstream, int startline, int startcolumn, int buffersize)
          Constructor.
 
Method Summary
 void adjustBeginLineColumn(int newLine, int newCol)
          Method to adjust line and column numbers for the start of a token.
 void backup(int amount)
          Retreat.
 char BeginToken()
           
 void Done()
          Set buffers back to null when finished.
 int getBeginColumn()
           
 int getBeginLine()
           
 int getColumn()
          Deprecated. 
 int getEndColumn()
          Get end column.
 int getEndLine()
          Get end line.
 String GetImage()
           
 int getLine()
          Deprecated. 
 char[] GetSuffix(int len)
           
 char readChar()
          Read a character.
 void ReInit(InputStream dstream)
          Reinitialise.
 void ReInit(InputStream dstream, int startline, int startcolumn)
          Reinitialise.
 void ReInit(InputStream dstream, int startline, int startcolumn, int buffersize)
          Reinitialise.
 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.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

staticFlag

public static final boolean staticFlag
Whether parser is static.

See Also:
Constant Field Values

bufpos

public int bufpos
Position in buffer.

Constructor Detail

JavaCharStream

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


JavaCharStream

public JavaCharStream(Reader dstream,
                      int startline,
                      int startcolumn)
Constructor.


JavaCharStream

public JavaCharStream(Reader dstream)
Constructor.


JavaCharStream

public JavaCharStream(InputStream dstream,
                      String encoding,
                      int startline,
                      int startcolumn,
                      int buffersize)
               throws UnsupportedEncodingException
Constructor.

Throws:
UnsupportedEncodingException

JavaCharStream

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


JavaCharStream

public JavaCharStream(InputStream dstream,
                      String encoding,
                      int startline,
                      int startcolumn)
               throws UnsupportedEncodingException
Constructor.

Throws:
UnsupportedEncodingException

JavaCharStream

public JavaCharStream(InputStream dstream,
                      int startline,
                      int startcolumn)
Constructor.


JavaCharStream

public JavaCharStream(InputStream dstream,
                      String encoding)
               throws UnsupportedEncodingException
Constructor.

Throws:
UnsupportedEncodingException

JavaCharStream

public JavaCharStream(InputStream dstream)
Constructor.

Method Detail

BeginToken

public char BeginToken()
                throws IOException
Returns:
starting character for token.
Throws:
IOException

readChar

public char readChar()
              throws IOException
Read a character.

Throws:
IOException

getColumn

@Deprecated
public int getColumn()
Deprecated. 


getLine

@Deprecated
public int getLine()
Deprecated. 


getEndColumn

public int getEndColumn()
Get end column.


getEndLine

public int getEndLine()
Get end line.


getBeginColumn

public int getBeginColumn()
Returns:
column of token start

getBeginLine

public int getBeginLine()
Returns:
line number of token start

backup

public void backup(int amount)
Retreat.


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,
                   int startline,
                   int startcolumn,
                   int buffersize)
            throws UnsupportedEncodingException
Reinitialise.

Throws:
UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream,
                   int startline,
                   int startcolumn,
                   int buffersize)
Reinitialise.


ReInit

public void ReInit(InputStream dstream,
                   String encoding,
                   int startline,
                   int startcolumn)
            throws UnsupportedEncodingException
Reinitialise.

Throws:
UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream,
                   int startline,
                   int startcolumn)
Reinitialise.


ReInit

public void ReInit(InputStream dstream,
                   String encoding)
            throws UnsupportedEncodingException
Reinitialise.

Throws:
UnsupportedEncodingException

ReInit

public void ReInit(InputStream dstream)
Reinitialise.


GetImage

public String GetImage()
Returns:
token image as String

GetSuffix

public char[] GetSuffix(int len)
Returns:
suffix

Done

public void Done()
Set buffers back to null when finished.


adjustBeginLineColumn

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