internal override void AddFact(
BoolExpr <DomainConstraint <BoolLiteral, Constant> > fact)
{
base.AddFact(fact);
this._kbSize += fact.CountTerms();
if (this._implications == null)
{
return;
}
this.CacheFact(fact);
}
internal bool IsSatisfiable(
BoolExpr <DomainConstraint <BoolLiteral, Constant> > expression)
{
ConversionContext <DomainConstraint <BoolLiteral, Constant> > conversionContext = IdentifierService <DomainConstraint <BoolLiteral, Constant> > .Instance.CreateConversionContext();
Converter <DomainConstraint <BoolLiteral, Constant> > converter = new Converter <DomainConstraint <BoolLiteral, Constant> >(expression, conversionContext);
if (converter.Vertex.IsZero())
{
return(false);
}
if (this.KbExpression.ExprType == ExprType.True)
{
return(true);
}
int num = expression.CountTerms() + this._kbSize;
BoolExpr <DomainConstraint <BoolLiteral, Constant> > expr1 = converter.Dnf.Expr;
BoolExpr <DomainConstraint <BoolLiteral, Constant> > boolExpr = this._chase.Chase(FragmentQueryKBChaseSupport.Normalizer.ToNnfAndSplitRange(FragmentQueryKBChaseSupport.Normalizer.EstimateNnfAndSplitTermCount(expr1) > FragmentQueryKBChaseSupport.Normalizer.EstimateNnfAndSplitTermCount(expression) ? expression : expr1));
BoolExpr <DomainConstraint <BoolLiteral, Constant> > expr2;
if (boolExpr.CountTerms() + this.ResidueSize > num)
{
expr2 = (BoolExpr <DomainConstraint <BoolLiteral, Constant> >) new AndExpr <DomainConstraint <BoolLiteral, Constant> >(new BoolExpr <DomainConstraint <BoolLiteral, Constant> >[2]
{
this.KbExpression,
expression
});
}
else
{
expr2 = (BoolExpr <DomainConstraint <BoolLiteral, Constant> >) new AndExpr <DomainConstraint <BoolLiteral, Constant> >((IEnumerable <BoolExpr <DomainConstraint <BoolLiteral, Constant> > >) new List <BoolExpr <DomainConstraint <BoolLiteral, Constant> > >(this.ResidueInternal)
{
boolExpr
});
conversionContext = IdentifierService <DomainConstraint <BoolLiteral, Constant> > .Instance.CreateConversionContext();
}
return(!new Converter <DomainConstraint <BoolLiteral, Constant> >(expr2, conversionContext).Vertex.IsZero());
}