ptolemy.moml.unit

Class UParser

java.lang.Object

ptolemy.moml.unit.UParser

All Implemented Interfaces:

UParserConstants

public class UParser
extends java.lang.Object
implements UParserConstants

This file implements a Unit parser for Ptolemy II using the JavaCC parser generator.

Since:

Ptolemy II 4.0

Version:

UParser.jj,v 1.9 2004/04/14 14:18:38 rowland Exp

Author:

Rowland R Johnson

Pt.AcceptedRating:

Red (rowland)

Pt.ProposedRating:

Red (rowland)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	UParser.JJCalls

Field Summary

Fields

Modifier and Type	Field and Description
(package private) boolean	debug
(package private) SimpleCharStream	jj_input_stream
Token	jj_nt Next token.
Token	token Current token.
UParserTokenManager	token_source Generated Token Manager.

Fields inherited from interface ptolemy.moml.unit.UParserConstants

DEFAULT, DIVIDE, DOLLAR, DOUBLE, EOF, EQUALS, EXPONENT, INTEGER, LETTER, LPAREN, LT, MINUS, MULTIPLY, PLUS, PORT, POWER, RPAREN, SEMICOLON, tokenImage, UNITLABEL

Constructor Summary

Constructors

Constructor and Description
UParser()
UParser(java.io.InputStream stream) Constructor with InputStream.
UParser(java.io.InputStream stream, java.lang.String encoding) Constructor with InputStream and supplied encoding
UParser(java.io.Reader stream) Constructor.
UParser(UParserTokenManager tm) Constructor with generated Token Manager.

Method Summary

Modifier and Type	Method and Description
void	disable_tracing() Disable tracing.
void	enable_tracing() Enable tracing.
UnitEquation	Equation()
java.util.Vector	Equations()
int	exponent()
ParseException	generateParseException() Generate ParseException.
Token	getNextToken() Get the next Token.
Token	getToken(int index) Get the specific Token.
double	number()
java.util.Vector	parseEquations(java.lang.String expression) Parse a set of equations separated by semicolons.
UnitExpr	parseUnitExpr(java.lang.String expression) Parse a unit expression.
void	ReInit(java.io.InputStream stream) Reinitialise.
void	ReInit(java.io.InputStream stream, java.lang.String encoding) Reinitialise.
void	ReInit(java.io.Reader stream) Reinitialise.
void	ReInit(UParserTokenManager tm) Reinitialise.
UnitExpr	uExpr()
Token	unit()
UnitTerm	uTerm()

Methods inherited from class java.lang.Object

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

Field Detail

debug

boolean debug

token_source

public UParserTokenManager token_source

Generated Token Manager.

jj_input_stream

SimpleCharStream jj_input_stream

token

public Token token

Current token.

jj_nt

public Token jj_nt

Next token.

Constructor Detail

UParser

public UParser()

UParser

public UParser(java.io.InputStream stream)

Constructor with InputStream.

UParser

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

Constructor with InputStream and supplied encoding

UParser

public UParser(java.io.Reader stream)

Constructor.

UParser

public UParser(UParserTokenManager tm)

Constructor with generated Token Manager.

Method Detail

parseUnitExpr

public UnitExpr parseUnitExpr(java.lang.String expression)
                       throws ParseException

Parse a unit expression.

Parameters:

expression -

Throws:

ParseException - If parsing error is encountered.

parseEquations

public java.util.Vector parseEquations(java.lang.String expression)
                                throws ParseException

Parse a set of equations separated by semicolons.

Parameters:

expression -

Throws:

ParseException - If parsing error is encountered.

uExpr

public final UnitExpr uExpr()
                     throws ParseException

Throws:

ParseException

uTerm

public final UnitTerm uTerm()
                     throws ParseException

Throws:

ParseException

unit

public final Token unit()
                 throws ParseException

Throws:

ParseException

Equations

public final java.util.Vector Equations()
                                 throws ParseException

Throws:

ParseException

Equation

public final UnitEquation Equation()
                            throws ParseException

Throws:

ParseException

exponent

public final int exponent()
                   throws ParseException

Throws:

ParseException

number

public final double number()
                    throws ParseException

Throws:

ParseException

ReInit

public void ReInit(java.io.InputStream stream)

Reinitialise.

ReInit

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

Reinitialise.

ReInit

public void ReInit(java.io.Reader stream)

Reinitialise.

ReInit

public void ReInit(UParserTokenManager tm)

Reinitialise.

getNextToken

public final Token getNextToken()

Get the next Token.

getToken

public final Token getToken(int index)

Get the specific Token.

generateParseException

public ParseException generateParseException()

Generate ParseException.

enable_tracing

public final void enable_tracing()

Enable tracing.

disable_tracing

public final void disable_tracing()

Disable tracing.