public TruthTable Simplify()
{
TruthTable simplifiedTt = new TruthTable(propositionRoot, propositionVariablesSet, SimplifyRowsIteratively(Rows));
simplifiedTt.OriginalResultColumn = GetConvertedResultColumn();
return(simplifiedTt);
}
protected override void ExecuteParsingActivities()
{
if (Root.IsAbstractProposition())
{
hashCodes = new List <string>();
// 1
TruthTable = new TruthTable(Root);
hashCodeCalculator.GenerateHashCode(TruthTable.GetConvertedResultColumn());
hashCodes.Add(hashCodeCalculator.HashCode);
// 2
SimplifiedTruthTable = TruthTable.Simplify();
if (NonConstantExpressionWasParsed())
{
// Convert the table to DNF such that we have a proposition to work with.
Proposition simplified = SimplifiedTruthTable.CreateDisjunctiveNormalForm();
TruthTable simplifiedTt = new TruthTable(simplified);
// Check the hash code for the proposition.
hashCodeCalculator.GenerateHashCode(simplifiedTt.GetConvertedResultColumn());
hashCodes.Add(hashCodeCalculator.HashCode);
// 3
Nandified = Root.Nandify();
TruthTable nandifiedTruthTable = new TruthTable(Nandified);
TruthTable nandifiedSimplified = nandifiedTruthTable.Simplify();
// Same as for simplified truth table.
Proposition nandSimpleDnf = nandifiedSimplified.CreateDisjunctiveNormalForm();
TruthTable nandSimpleDnfTt = new TruthTable(nandSimpleDnf);
hashCodeCalculator.GenerateHashCode(nandSimpleDnfTt.GetConvertedResultColumn());
hashCodes.Add(hashCodeCalculator.HashCode);
// 4
DisjunctiveNormalForm = TruthTable.CreateDisjunctiveNormalForm();
TruthTable disjunctiveTruthTable = new TruthTable(DisjunctiveNormalForm);
hashCodeCalculator.GenerateHashCode(disjunctiveTruthTable.GetConvertedResultColumn());
hashCodes.Add(hashCodeCalculator.HashCode);
// 5
Proposition simplifiedDisjunctiveNormal = SimplifiedTruthTable.CreateDisjunctiveNormalForm();
TruthTable simplifiedDisjunctiveNormalTruthTable = new TruthTable(simplifiedDisjunctiveNormal);
hashCodeCalculator.GenerateHashCode(simplifiedDisjunctiveNormalTruthTable.GetConvertedResultColumn());
hashCodes.Add(hashCodeCalculator.HashCode);
// 6
Proposition nandifiedSimplifiedDisjunctiveNormal = simplifiedDisjunctiveNormal.Nandify();
TruthTable nandifiedSimplifiedDisjunctiveNormalTruthTable = new TruthTable(nandifiedSimplifiedDisjunctiveNormal);
hashCodeCalculator.GenerateHashCode(nandifiedSimplifiedDisjunctiveNormalTruthTable.GetConvertedResultColumn());
hashCodes.Add(hashCodeCalculator.HashCode);
}
}
}
private void AddTruthTable(ListBox truthTableLbx, TruthTable truthTable)
{
truthTableLbx.Items.Clear();
if (truthTable != null)
{
truthTableLbx.Items.Add(truthTable.TableHeader());
foreach (TruthTableRow row in truthTable.Rows)
{
truthTableLbx.Items.Add(row);
}
}
}
private void DisplayTruthTableInformation()
{
TruthTable truthTable = logicApp.TruthTable;
AddTruthTable(truthTableLbx, truthTable);
}