org.expressionj.model

Class ExpressionJ

java.lang.Object

org.expressionj.model.ExpressionJ

public class ExpressionJ
extends java.lang.Object

A wrapper around the JavaCC Expression parser.

Since:

0.9.3

Constructor Summary

Constructors

Constructor and Description
ExpressionJ()

Method Summary

Modifier and Type	Method and Description
static void	acceptUndefinedVariables(boolean accept) Set if undefined variables are allowed by the parser.
static boolean	isAcceptingUndefinedVariables() Return true if undefined variables are allowed by the parser.
static Equation	parse(java.io.File file) Parse an equation.
static Equation	parse(java.io.File file, java.util.List<Variable> vars) Parse an equation, passing to the parser a list of global variables.
static Equation	parse(java.lang.String text) Parse an equation.
static Equation	parse(java.lang.String text, java.util.List<Variable> vars) Parse an equation, passing to the parser a list of global variables.
static Equation	parse(java.net.URL url) Parse an equation.
static Equation	parse(java.net.URL url, java.util.List<Variable> vars) Parse an equation, passing to the parser a list of global variables.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionJ

public ExpressionJ()

Method Detail

parse

public static Equation parse(java.net.URL url)
                      throws ParseException,
                             java.io.IOException

Parse an equation.

Parameters:

url - the URL containing the equation

Returns:

the equation

Throws:

ParseException - if there is an exception while parsing the equation

java.io.IOException - if there is an IO exception while reading the URL

parse

public static Equation parse(java.net.URL url,
                             java.util.List<Variable> vars)
                      throws ParseException,
                             java.io.IOException

Parse an equation, passing to the parser a list of global variables.

Parameters:

url - the URL containing the equation

vars - the list of global variables

Returns:

the equation

Throws:

ParseException - if there is an exception while parsing the equation

java.io.IOException - if there is an IO exception while reading the URL

parse

public static Equation parse(java.io.File file)
                      throws ParseException,
                             java.io.IOException

Parse an equation.

Parameters:

file - the File containing the equation

Returns:

the equation

Throws:

ParseException - if there is an exception while parsing the equation

java.io.IOException - if there is an IO exception while reading the URL

parse

public static Equation parse(java.io.File file,
                             java.util.List<Variable> vars)
                      throws ParseException,
                             java.io.IOException

Parse an equation, passing to the parser a list of global variables.

Parameters:

file - the File containing the equation

vars - the list of global variables

Returns:

the equation

Throws:

ParseException - if there is an exception while parsing the equation

java.io.IOException - if there is an IO exception while reading the URL

parse

public static Equation parse(java.lang.String text)
                      throws ParseException

Parse an equation.

Parameters:

text - the equation

Returns:

the equation

Throws:

ParseException - if there is an exception while parsing the equation

parse

public static Equation parse(java.lang.String text,
                             java.util.List<Variable> vars)
                      throws ParseException

Parse an equation, passing to the parser a list of global variables.

Parameters:

text - the equation

vars - the list of global variables

Returns:

the equation

Throws:

ParseException - if there is an exception while parsing the equation

acceptUndefinedVariables

public static void acceptUndefinedVariables(boolean accept)

Set if undefined variables are allowed by the parser.

Parameters:

accept - true if undefined variables are allowed by the parser

isAcceptingUndefinedVariables

public static boolean isAcceptingUndefinedVariables()

Return true if undefined variables are allowed by the parser.

Returns:

true if undefined variables are allowed by the parser