Esempio n. 1
0
        private static Formula ReadGroundedFormula(CompoundExpression exp, Domain d)
        {
            bool bPredicate = true;

            if (IsUniversalQuantifier(exp))
            {
                CompoundExpression          eParameter           = (CompoundExpression)exp.SubExpressions[0];
                CompoundExpression          eBody                = (CompoundExpression)exp.SubExpressions[1];
                string                      sParameter           = eParameter.Type;
                string                      sType                = eParameter.SubExpressions[1].ToString();
                Dictionary <string, string> dParameterNameToType = new Dictionary <string, string>();
                dParameterNameToType[sParameter] = sType;
                ParametrizedFormula cfQuantified = new ParametrizedFormula(exp.Type);
                cfQuantified.Parameters[sParameter] = sType;
                Formula fBody = ReadFormula(eBody, dParameterNameToType, true, d);
                cfQuantified.AddOperand(fBody);
                return(cfQuantified);
            }
            foreach (Expression eSub in exp.SubExpressions)
            {
                if (eSub is CompoundExpression)
                {
                    bPredicate = false;
                    break;
                }
            }
            if (bPredicate)
            {
                return(new PredicateFormula(ReadGroundedPredicate(exp, d)));
            }
            else
            {
                CompoundFormula cf          = new CompoundFormula(exp.Type);
                int             iExpression = 0;
                for (iExpression = 0; iExpression < exp.SubExpressions.Count; iExpression++)
                {
                    Formula f = ReadGroundedFormula((CompoundExpression)exp.SubExpressions[iExpression], d);
                    cf.AddOperand(f);
                }
                if (cf.Operator == "not" && cf.Operands[0] is PredicateFormula)
                {
                    return(new PredicateFormula(((PredicateFormula)cf.Operands[0]).Predicate.Negate()));
                }
                return(cf);
            }
        }
Esempio n. 2
0
        private static Formula ReadFormula(CompoundExpression exp, Dictionary <string, string> dParameterNameToType, bool bParamterized, Domain d)
        {
            bool bPredicate = true;

            //Console.WriteLine(exp);
            if (d != null && d.IsFunctionExpression(exp.Type))
            {
                Predicate p = ReadFunctionExpression(exp, dParameterNameToType, d);
                return(new PredicateFormula(p));
            }
            else if (IsUniversalQuantifier(exp))
            {
                CompoundExpression eParameter = (CompoundExpression)exp.SubExpressions[0];
                CompoundExpression eBody      = (CompoundExpression)exp.SubExpressions[1];
                string             sParameter = eParameter.Type;
                string             sType      = eParameter.SubExpressions[1].ToString();
                dParameterNameToType[sParameter] = sType;
                ParametrizedFormula cfQuantified = new ParametrizedFormula(exp.Type);
                cfQuantified.Parameters[sParameter] = sType;
                Formula fBody = ReadFormula(eBody, dParameterNameToType, true, d);
                cfQuantified.AddOperand(fBody);
                return(cfQuantified);
            }
            else if (exp.Type == "probabilistic")
            {
                ProbabilisticFormula pf = new ProbabilisticFormula();
                int iExpression         = 0;
                for (iExpression = 0; iExpression < exp.SubExpressions.Count; iExpression += 2)
                {
                    //if (exp.SubExpressions[iExpression] is StringExpression)
                    //    throw new InvalidDataException();
                    string sProb = exp.SubExpressions[iExpression].ToString();
                    double dProb = 0.0;
                    if (sProb.Contains("/"))
                    {
                        string[] a = sProb.Split('/');
                        dProb = double.Parse(a[0]) / double.Parse(a[1]);
                    }
                    else
                    {
                        dProb = double.Parse(sProb);
                    }
                    Formula f = ReadFormula((CompoundExpression)exp.SubExpressions[iExpression + 1], dParameterNameToType, bParamterized, d);
                    pf.AddOption(f, dProb);
                }
                return(pf);
            }
            else
            {
                foreach (Expression eSub in exp.SubExpressions)
                {
                    if (eSub is CompoundExpression)
                    {
                        bPredicate = false;
                        break;
                    }
                }
                if (bPredicate)
                {
                    return(ReadPredicate(exp, dParameterNameToType, bParamterized, d));
                }
                else
                {
                    CompoundFormula cf          = new CompoundFormula(exp.Type);
                    int             iExpression = 0;
                    for (iExpression = 0; iExpression < exp.SubExpressions.Count; iExpression++)
                    {
                        if (exp.SubExpressions[iExpression] is StringExpression)
                        {
                            throw new InvalidDataException();
                        }
                        Formula f = ReadFormula((CompoundExpression)exp.SubExpressions[iExpression], dParameterNameToType, bParamterized, d);
                        cf.SimpleAddOperand(f);
                    }
                    if (cf.Operator == "not" && cf.Operands[0] is PredicateFormula)
                    {
                        PredicateFormula fNegate = new PredicateFormula(((PredicateFormula)cf.Operands[0]).Predicate.Negate());
                        return(fNegate);
                    }
                    return(cf);
                }
            }
        }