jxl.biff.formula
Class TokenFormulaParser

java.lang.Object
  |
  +--jxl.biff.formula.TokenFormulaParser

All Implemented Interfaces:

Parser

class TokenFormulaParser

extends java.lang.Object

implements Parser

Parses the excel ptgs into a parse tree

Field Summary

private int	pos The current position within the array
private Cell	relativeTo The cell containing the formula.
private ParseItem	root The parse tree
private byte[]	tokenData The Excel ptgs
private java.util.Stack	tokenStack The hash table of items that have been parsed
private ExternalSheet	workbook A reference to the workbook which holds the external sheet information

Constructor Summary

TokenFormulaParser(byte[] data, Cell c, ExternalSheet es)
Constructor

Method Summary

private void	addOperator(Operator o) Adds the specified operator to the parse tree, taking operands off the stack as appropriate
byte[]	getBytes() Gets the bytes for the formula.
java.lang.String	getFormula() Gets the formula as a string
void	parse() Parses the list of tokens

Methods inherited from class java.lang.Object

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

Field Detail

tokenData

private byte[] tokenData

The Excel ptgs

relativeTo

private Cell relativeTo

The cell containing the formula. This is used in order to determine relative cell values

pos

private int pos

The current position within the array

root

private ParseItem root

The parse tree

tokenStack

private java.util.Stack tokenStack

The hash table of items that have been parsed

workbook

private ExternalSheet workbook

A reference to the workbook which holds the external sheet information

Constructor Detail

TokenFormulaParser

public TokenFormulaParser(byte[] data,
                          Cell c,
                          ExternalSheet es)

Constructor

Method Detail

parse

public void parse()
           throws FormulaException

Parses the list of tokens

Specified by:

parse in interface Parser

Throws:

FormulaException -

addOperator

private void addOperator(Operator o)

Adds the specified operator to the parse tree, taking operands off the stack as appropriate

getFormula

public java.lang.String getFormula()

Gets the formula as a string

Specified by:

getFormula in interface Parser

Following copied from interface: jxl.biff.formula.Parser

Returns:

the formula as a string

getBytes

public byte[] getBytes()

Gets the bytes for the formula. This takes into account any token mapping necessary because of shared formulas

Specified by:

getBytes in interface Parser

Returns:

the bytes in RPN