com.jstatcom.parser

Class CalcEngine

java.lang.Object

com.jstatcom.parser.CalcEngine

All Implemented Interfaces:

CalcEngineConstants

public class CalcEngine
extends java.lang.Object
implements CalcEngineConstants

Field Summary

Fields

Modifier and Type	Field and Description
Token	jj_nt
boolean	lookingAhead
Token	token
CalcEngineTokenManager	token_source

Fields inherited from interface com.jstatcom.parser.CalcEngineConstants

CONSTANT, DEFAULT, DIGIT, DIVIDE, EOF, EOFEXP, EXP, FLOAT, FUNCNAME, INTEGER, LETTER, LHS, MINUS, MULTIPLY, PLUS, ROWAPPEND, tokenImage, VAR

Constructor Summary

Constructors

Constructor and Description
CalcEngine() Default constructor.
CalcEngine(CalcEngineTokenManager tm)
CalcEngine(java.io.InputStream stream)
CalcEngine(java.io.InputStream stream, java.lang.String encoding)
CalcEngine(java.io.Reader stream)

Method Summary

Modifier and Type	Method and Description
void	clearVariableMap() Deletes all variables from the variableMap.
void	disable_tracing()
void	element()
void	enable_tracing()
void	equation() Expression of the form ()? sum()
void	exp()
void	function()
ParseException	generateParseException()
Token	getNextToken()
java.lang.String	getOutput() Retrieves the contents of the output buffer of the last parser run.
Token	getToken(int index)
double[]	getVariable(java.lang.String variableName) Retrieves the underlying data for a variableName.
java.lang.String[]	getVariableNames() Retrieves all keys that represent the variable names.
static void	main(java.lang.String[] args)
void	parseString(java.lang.String inputString) Reinitializes engine and parses an input String.
void	putVariable(java.lang.String keyName, double[] dataArray) Define the variables that can be used during the parsing.
void	ReInit(CalcEngineTokenManager tm)
void	ReInit(java.io.InputStream stream)
void	ReInit(java.io.InputStream stream, java.lang.String encoding)
void	ReInit(java.io.Reader stream)
void	sum()
void	term()
int	toeval()
void	unary()
void	variable()

Methods inherited from class java.lang.Object

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

Field Detail

token_source

public CalcEngineTokenManager token_source

token

public Token token

jj_nt

public Token jj_nt

lookingAhead

public boolean lookingAhead

Constructor Detail

CalcEngine

public CalcEngine()

Default constructor.

CalcEngine

public CalcEngine(java.io.InputStream stream)

CalcEngine

public CalcEngine(java.io.InputStream stream,
                  java.lang.String encoding)

CalcEngine

public CalcEngine(java.io.Reader stream)

CalcEngine

public CalcEngine(CalcEngineTokenManager tm)

Method Detail

main

public static void main(java.lang.String[] args)

clearVariableMap

public void clearVariableMap()

Deletes all variables from the variableMap.

putVariable

public void putVariable(java.lang.String keyName,
                        double[] dataArray)

Define the variables that can be used during the parsing. The dataArray is copied before it is put into the variableMap.

Parameters:

keyName - name of the variable

dataArray - is a (T x 1) array with the data

Throws:

java.lang.IllegalArgumentException - if (JSCConstants.isValidName(keyName) != null || dataArray == null)

getVariableNames

public java.lang.String[] getVariableNames()

Retrieves all keys that represent the variable names.

Returns:

String[] containing the keys

getVariable

public double[] getVariable(java.lang.String variableName)

Retrieves the underlying data for a variableName.

Parameters:

variableName - the name of the variable

Returns:

double[] the data

getOutput

public java.lang.String getOutput()

Retrieves the contents of the output buffer of the last parser run.

Returns:

String the contents of the output buffer

parseString

public void parseString(java.lang.String inputString)
                 throws ParseException,
                        TokenMgrError

Reinitializes engine and parses an input String.

Parameters:

inputString - the String to parse

Throws:

ParseException - if parsing failed, contains error description

TokenMgrError - if tokenizing failed, contains error description

toeval

public final int toeval()
                 throws ParseException

Throws:

ParseException

equation

public final void equation()
                    throws ParseException

Expression of the form ()? sum()

Throws:

ParseException

sum

public final void sum()
               throws ParseException

Throws:

ParseException

term

public final void term()
                throws ParseException

Throws:

ParseException

exp

public final void exp()
               throws ParseException

Throws:

ParseException

unary

public final void unary()
                 throws ParseException

Throws:

ParseException

element

public final void element()
                   throws ParseException

Throws:

ParseException

variable

public final void variable()
                    throws ParseException

Throws:

ParseException

function

public final void function()
                    throws ParseException

Throws:

ParseException

ReInit

public void ReInit(java.io.InputStream stream)

ReInit

public void ReInit(java.io.InputStream stream,
                   java.lang.String encoding)

ReInit

public void ReInit(java.io.Reader stream)

ReInit

public void ReInit(CalcEngineTokenManager tm)

getNextToken

public final Token getNextToken()

getToken

public final Token getToken(int index)

generateParseException

public ParseException generateParseException()

enable_tracing

public final void enable_tracing()

disable_tracing

public final void disable_tracing()