org.da.sparqlhelper.sparql.model.expressions.parser.ast

Class ExpressionParser

java.lang.Object

org.da.sparqlhelper.sparql.model.expressions.parser.ast.ExpressionParser

All Implemented Interfaces:

ExpressionParserConstants

public class ExpressionParser
extends java.lang.Object
implements ExpressionParserConstants

This class performs logical expression parsing and evaluation. It is build with JavaCC.

Field Summary

Fields

Modifier and Type	Field and Description
static Token	jj_nt Next token.
static Token	token Current token.
static ExpressionParserTokenManager	token_source Generated Token Manager.

Fields inherited from interface org.da.sparqlhelper.sparql.model.expressions.parser.ast.ExpressionParserConstants

ADD, AND, CHARACTERS, CLOSEPARENTHESIS, COMMA, DEFAULT, DIGITS, DIV, EOF, EQ, FUNCTIONNAME, GE, GT, IDENTIFIER, LE, LT, MULT, NEQ, NOT, OPENPARENTHESIS, OR, Q_IRI_REF, SUB, TEXT, tokenImage, VALUE

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
static void	closePar()
static void	comma()
static void	disable_tracing() Disable tracing.
static void	element()
static void	enable_tracing() Enable tracing.
static void	expr()
static void	exprContinuation()
static void	exprWithFirst()
static void	exprWithoutFirst()
static void	FormalParameters()
static ParseException	generateParseException() Generate ParseException.
static Token	getNextToken() Get the next Token.
static Token	getToken(int index) Get the specific Token.
static void	openPar()
static void	parse()
static Expression	parse(java.lang.String text, ISparqlRequestGroup request) Parse an equation.
void	ReInit(ExpressionParserTokenManager tm) Reinitialise.
static void	ReInit(java.io.InputStream stream) Reinitialise.
static void	ReInit(java.io.InputStream stream, java.lang.String encoding) Reinitialise.
static void	ReInit(java.io.Reader stream) Reinitialise.
static boolean	trace_enabled() Trace enabled.
static void	unary()

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

Generated Token Manager.

token

public static Token token

Current token.

jj_nt

public static Token jj_nt

Next token.

Constructor Detail

ExpressionParser

public ExpressionParser(java.io.InputStream stream)

Constructor with InputStream.

ExpressionParser

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

Constructor with InputStream and supplied encoding

ExpressionParser

public ExpressionParser(java.io.Reader stream)

Constructor.

ExpressionParser

public ExpressionParser(ExpressionParserTokenManager tm)

Constructor with generated Token Manager.

Method Detail

parse

public static Expression parse(java.lang.String text,
                               ISparqlRequestGroup request)
                        throws ParseException

Parse an equation.

Parameters:

text - the equation

Throws:

ParseException

parse

public static final void parse()
                        throws ParseException

Throws:

ParseException

comma

public static final void comma()
                        throws ParseException

Throws:

ParseException

openPar

public static final void openPar()
                          throws ParseException

Throws:

ParseException

closePar

public static final void closePar()
                           throws ParseException

Throws:

ParseException

expr

public static final void expr()
                       throws ParseException

Throws:

ParseException

exprWithoutFirst

public static final void exprWithoutFirst()
                                   throws ParseException

Throws:

ParseException

exprWithFirst

public static final void exprWithFirst()
                                throws ParseException

Throws:

ParseException

exprContinuation

public static final void exprContinuation()
                                   throws ParseException

Throws:

ParseException

unary

public static final void unary()
                        throws ParseException

Throws:

ParseException

FormalParameters

public static final void FormalParameters()
                                   throws ParseException

Throws:

ParseException

element

public static final void element()
                          throws ParseException

Throws:

ParseException

ReInit

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

Reinitialise.

ReInit

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

Reinitialise.

ReInit

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

Reinitialise.

ReInit

public void ReInit(ExpressionParserTokenManager tm)

Reinitialise.

getNextToken

public static final Token getNextToken()

Get the next Token.

getToken

public static final Token getToken(int index)

Get the specific Token.

generateParseException

public static ParseException generateParseException()

Generate ParseException.

trace_enabled

public static final boolean trace_enabled()

Trace enabled.

enable_tracing

public static final void enable_tracing()

Enable tracing.

disable_tracing

public static final void disable_tracing()

Disable tracing.