public void NeedsNormalisation()
{
var e = new CNFExpression <MyModel>(PLExpression <MyModel> .Iff(m => m.L, m => m.R1 || m.R2));
e.ShouldHaveState(clauseCount: 3);
e.Clauses.ElementAt(0).ShouldHaveState(
isDefiniteClause: false,
isGoalClause: false,
isHornClause: false,
isUnitClause: false,
literalCount: 3);
e.Clauses.ElementAt(0).Literals.ElementAt(0).ShouldHaveState(
atomicSentenceSymbol: "m.L",
isNegated: true);
e.Clauses.ElementAt(0).Literals.ElementAt(1).ShouldHaveState(
atomicSentenceSymbol: "m.R1",
isNegated: false);
e.Clauses.ElementAt(0).Literals.ElementAt(2).ShouldHaveState(
atomicSentenceSymbol: "m.R2",
isNegated: false);
e.Clauses.ElementAt(1).ShouldHaveState(
isDefiniteClause: true,
isGoalClause: false,
isHornClause: true,
isUnitClause: false,
literalCount: 2);
e.Clauses.ElementAt(1).Literals.ElementAt(0).ShouldHaveState(
atomicSentenceSymbol: "m.R1",
isNegated: true);
e.Clauses.ElementAt(1).Literals.ElementAt(1).ShouldHaveState(
atomicSentenceSymbol: "m.L",
isNegated: false);
e.Clauses.ElementAt(2).ShouldHaveState(
isDefiniteClause: true,
isGoalClause: false,
isHornClause: true,
isUnitClause: false,
literalCount: 2);
e.Clauses.ElementAt(2).Literals.ElementAt(0).ShouldHaveState(
atomicSentenceSymbol: "m.R2",
isNegated: true);
e.Clauses.ElementAt(2).Literals.ElementAt(1).ShouldHaveState(
atomicSentenceSymbol: "m.L",
isNegated: false);
}
public void UnitClause()
{
var e = new CNFExpression <MyModel>(m => m.L);
e.ShouldHaveState(clauseCount: 1);
e.Clauses.Single().ShouldHaveState(
isDefiniteClause: true,
isGoalClause: false,
isHornClause: true,
isUnitClause: true,
literalCount: 1);
e.Clauses.Single().Literals.Single().ShouldHaveState(
atomicSentenceSymbol: "m.L",
isNegated: false);
}
public static void ShouldHaveState(
this CNFExpression <MyModel> expression,
int clauseCount)
{
Assert.Equal(clauseCount, expression.Clauses.Count);
}
public ClauseBuilder(CNFExpression <TModel> owner, List <CNFClause <TModel> > clauses) => (this.owner, this.clauses) = (owner, clauses);
