Package net.sf.tweety.logics.qbf.parser

Class QbfParser

java.lang.Object

net.sf.tweety.commons.Parser<net.sf.tweety.logics.pl.syntax.PlBeliefSet,net.sf.tweety.logics.pl.syntax.PlFormula>

net.sf.tweety.logics.pl.parser.PlParser

net.sf.tweety.logics.qbf.parser.QbfParser

public class QbfParser
extends net.sf.tweety.logics.pl.parser.PlParser

This class implements a parser for quantified boolean formulas. The BNF for a qbf belief set is given by (starting symbol is KB)

KB ::== VARDECLAR FORMULAS
VARDECLAR ::== "{" (VARIABLENAME ("," VARIABLENAME)*)? "}"
FORMULAS ::== FORMULA ( "\n" FORMULA )*
FORMULA ::== VARIABLENAME | "(" FORMULA ")" | FORMULA ">>" FORMULA | FORMULA "||" FORMULA | FORMULA "=>" FORMULA | FORMULA "<=>" FORMULA | "!" FORMULA | "+" | "-" | "forall" VARIABLENAME ":" "(" FORMULA ")" | "exists" VARIABLENAME ":" "(" FORMULA ")" |

VARIABLENAME is a sequence of characters excluding |,&,!,(,),=,<,> and whitespace characters.

Author:

Anna Gessler, Matthias Thimm

Constructor Summary

Constructors

Constructor	Description
QbfParser()

Method Summary

Modifier and Type	Method	Description
net.sf.tweety.logics.pl.syntax.PlBeliefSet	parseBeliefBase(Reader reader)
net.sf.tweety.logics.pl.syntax.PlFormula	parseFormula(Reader reader)

Methods inherited from class net.sf.tweety.logics.pl.parser.PlParser

parseDisjunction, parseExclusiveDisjunction

Methods inherited from class net.sf.tweety.commons.Parser

isNumeric, parseBeliefBase, parseBeliefBaseFromFile, parseFormula, parseFormulaFromFile

Methods inherited from class java.lang.Object

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

Constructor Detail

QbfParser

public QbfParser()

Method Detail

parseBeliefBase

public net.sf.tweety.logics.pl.syntax.PlBeliefSet parseBeliefBase(Reader reader)
                                                           throws net.sf.tweety.commons.ParserException

Overrides:

parseBeliefBase in class net.sf.tweety.logics.pl.parser.PlParser

Throws:

net.sf.tweety.commons.ParserException

parseFormula

public net.sf.tweety.logics.pl.syntax.PlFormula parseFormula(Reader reader)
                                                      throws net.sf.tweety.commons.ParserException

Overrides:

parseFormula in class net.sf.tweety.logics.pl.parser.PlParser

Throws:

net.sf.tweety.commons.ParserException