/// <summary>
/// Extract the CNF formulas.
/// </summary>
/// <returns>An enumerable of formulas in CNF form.</returns>
private void ExtractCNFs(TreeNode rootNode, ref List <MultipleDisjunction> data, bool andProve = false)
{
string expr = textBoxInput.Text; // expression input.
tabControl1.SelectedIndex = 2;
// Creates a new analyzer for the expression.
Analyzer asl = new Analyzer(expr);
// Tokenization phase.
if (!Tokenize(asl))
{
return;
}
// Parsing phase.
AST ast = CNF.Convert(asl.Parse());
CNFProposition cnf = new CNFProposition(ast);
string fnc = ast.ToString();
if (andProve)
{
atp.Theorem = cnf;
bool proved = atp.ProveIt(new ATP.ReportDelegate(Report));
string msg = proved ? "TEOREMA PROVADO!" : "NÃO CONSEGUI PROVAR A TEORIA";
MessageBoxIcon icon = proved ? MessageBoxIcon.Asterisk : MessageBoxIcon.Warning;
MessageBox.Show(msg, "Resultado", MessageBoxButtons.OK, icon);
}
else
{
atp.AddPremisse(cnf);
}
//IEnumerable<CnfOr> orClauses = CNF.Separate(ast, true);
IEnumerable <MultipleDisjunction> orClauses = cnf.Props;
// Add the formula to the node and data.
data.AddRange(orClauses);
foreach (var clause in orClauses)
{
TreeNode node = new TreeNode(clause.ToString());
rootNode.Nodes.Add(node);
}
rootNode.ExpandAll();
}
// Convert the formula to Conjunctive Normal Form.
private void buttonFNC_Click(object sender, EventArgs e)
{
string expr = textBoxInput.Text; // expression input.
tabControl1.SelectedIndex = 1;
// Creates a new analyzer for the expression.
Analyzer asl = new Analyzer(expr);
// Tokenization phase.
if (!Tokenize(asl))
{
return;
}
// Parsing phase.
AST ast = CNF.Convert(asl.Parse());
string fnc = ASTFormat.Format(ast, ASTFormat.FormatType.PLAIN);
CNFProposition cnf = new CNFProposition(ast);
//IEnumerable<CnfOr> orClauses = CNF.Separate(ast, true);
// Add this formula to the FNC list.
RichTextTool rtt = new RichTextTool(ref richTextBoxCNF);
rtt.AppendText(expr + " - ");
richTextBoxCNF.SelectionBackColor = Color.Aquamarine;
rtt.ToggleBold();
rtt.AppendText(fnc);
richTextBoxCNF.SelectionBackColor = Color.White;
rtt.ToggleBold(); rtt.AppendText(" - "); rtt.ToggleBold();
richTextBoxCNF.SelectionBackColor = Color.LawnGreen;
rtt.AppendText(cnf.ToString());
rtt.Eol();
// Add the tree to the image.
/*
* if (m_treeFiller == null) m_treeFiller = new TreeFiller(pictureBoxTree);
* m_treeFiller.Draw(ast);
*/
}
