JSci.maths.symbolic
Class ExpressionParser

java.lang.Object
  JSci.maths.symbolic.ExpressionParser

All Implemented Interfaces:

ExpressionParserConstants

public class ExpressionParser
extends java.lang.Object
implements ExpressionParserConstants

This class has some static methods to create an Expression from a string or a text stream.

Nested Class Summary

(package private) static class

ExpressionParser.JJCalls

Field Summary

(package private) static SimpleCharStream	jj_input_stream
static Token	jj_nt
static boolean	lookingAhead
static Token	token
static ExpressionParserTokenManager	token_source

Fields inherited from interface JSci.maths.symbolic.ExpressionParserConstants

DEFAULT, DIGIT, DNUM, EOF, IDENTIFIER, INUM, IUNIT, LETTER, ONEARGFUNCTION, PI, tokenImage

Constructor Summary

ExpressionParser(ExpressionParserTokenManager tm)

ExpressionParser(java.io.InputStream stream)

ExpressionParser(java.io.Reader stream)

Method Summary

static void	disable_tracing()
static void	enable_tracing()
static Expression	expressionP0()
static Expression[]	expressionP0l()
static Expression	expressionP1()
static Expression[]	expressionP1l()
static Expression	expressionP2()
static Expression	expressionP3()
static Expression	expressionP4()
static ParseException	generateParseException()
static Token	getNextToken()
static Token	getToken(int index)
static Expression	Input()
static Expression	parse(java.io.InputStream is) Create an Expression reading a text from a stream.
static Expression	parse(java.io.InputStream is, java.util.Map vars) Create an Expression reading a text from a stream.
static Expression	parse(java.lang.String s) Create an Expression from a String like "x+y*sin(z)".
static Expression	parse(java.lang.String s, java.util.Map vars) Create an Expression from a String like "x+y*sin(z)".
void	ReInit(ExpressionParserTokenManager tm)
static void	ReInit(java.io.InputStream stream)
static void	ReInit(java.io.Reader stream)

Methods inherited from class java.lang.Object

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

Field Detail

token_source

public static ExpressionParserTokenManager token_source

jj_input_stream

static SimpleCharStream jj_input_stream

token

public static Token token

jj_nt

public static Token jj_nt

lookingAhead

public static boolean lookingAhead

Constructor Detail

ExpressionParser

public ExpressionParser(java.io.InputStream stream)

ExpressionParser

public ExpressionParser(java.io.Reader stream)

ExpressionParser

public ExpressionParser(ExpressionParserTokenManager tm)

Method Detail

parse

public static Expression parse(java.io.InputStream is,
                               java.util.Map vars)
                        throws ParseException

Create an Expression reading a text from a stream. The text can be something like "x+y*sin(z)".

Parameters:

is - a stream

vars - a Map name / variable; it can contain some of the variable names.

Returns:

the Expression

Throws:

ParseException

parse

public static Expression parse(java.lang.String s,
                               java.util.Map vars)
                        throws ParseException

Create an Expression from a String like "x+y*sin(z)".

Parameters:

s - a string

vars - a Map name / variable; it can contain some of the variable names.

Returns:

the Expression

Throws:

ParseException

parse

public static Expression parse(java.lang.String s)
                        throws ParseException

Create an Expression from a String like "x+y*sin(z)". Variables are not accessible.

Parameters:

s - a string

Returns:

the Expression

Throws:

ParseException

parse

public static Expression parse(java.io.InputStream is)
                        throws ParseException

Create an Expression reading a text from a stream. The text can be something like "x+y*sin(z)". Variables are not accessible.

Parameters:

is - a stream

Returns:

the Expression

Throws:

ParseException

Input

public static final Expression Input()
                              throws ParseException

Throws:

ParseException

expressionP0

public static final Expression expressionP0()
                                     throws ParseException

Throws:

ParseException

expressionP0l

public static final Expression[] expressionP0l()
                                        throws ParseException

Throws:

ParseException

expressionP1

public static final Expression expressionP1()
                                     throws ParseException

Throws:

ParseException

expressionP1l

public static final Expression[] expressionP1l()
                                        throws ParseException

Throws:

ParseException

expressionP2

public static final Expression expressionP2()
                                     throws ParseException

Throws:

ParseException

expressionP3

public static final Expression expressionP3()
                                     throws ParseException

Throws:

ParseException

expressionP4

public static final Expression expressionP4()
                                     throws ParseException

Throws:

ParseException

ReInit

public static void ReInit(java.io.InputStream stream)

ReInit

public static void ReInit(java.io.Reader stream)

ReInit

public void ReInit(ExpressionParserTokenManager tm)

getNextToken

public static final Token getNextToken()

getToken

public static final Token getToken(int index)

generateParseException

public static ParseException generateParseException()

enable_tracing

public static final void enable_tracing()

disable_tracing

public static final void disable_tracing()