Package org.opensourcephysics.numerics

Class MathExpParser

java.lang.Object

org.opensourcephysics.numerics.MathExpParser

All Implemented Interfaces:

Function, MultiVarFunction

Direct Known Subclasses:

SuryonoParser

public abstract class MathExpParser
extends Object
implements Function, MultiVarFunction

MathExpParser defines an abstract super class for mathematical expression parsers.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	NO_ERROR	No error.
static final int	SYNTAX_ERROR	Syntax error.

Constructor Summary

Constructors

Constructor	Description
MathExpParser()

Method Summary

Modifier and Type	Method	Description
static MathExpParser	createParser()
abstract String	getFunction()	Gets the function string.
abstract String[]	getFunctionNames()	Returns names of functions recognized by the parser.
abstract void	setFunction(String funcStr)	Parses the function string using existing variable names.
abstract void	setFunction(String funcStr, String[] vars)	Parses the function string using existing variable names.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opensourcephysics.numerics.Function

evaluate

Methods inherited from interface org.opensourcephysics.numerics.MultiVarFunction

evaluate

Field Details

NO_ERROR

public static final int NO_ERROR

No error.

See Also:

• Constant Field Values

SYNTAX_ERROR

public static final int SYNTAX_ERROR

Syntax error.

See Also:

• Constant Field Values

Constructor Details

MathExpParser

public MathExpParser()

Method Details

setFunction

public abstract void setFunction(String funcStr)
                          throws ParserException

Parses the function string using existing variable names.

Parameters:

funcStr - the function to be parsed

Throws:

ParserException

setFunction

public abstract void setFunction(String funcStr,
 String[] vars)
                          throws ParserException

Parses the function string using existing variable names.

Parameters:

funcStr - the function to be parsed

vars - the function's variables

Throws:

ParserException

getFunction

public abstract String getFunction()

Gets the function string.

createParser

public static MathExpParser createParser()

getFunctionNames

public abstract String[] getFunctionNames()

Returns names of functions recognized by the parser.

Returns:

array of function names