// 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);
*/
}
/// <summary>
/// Report the proof state.
/// </summary>
/// <param name="message">Message from the proof.</param>
public void Report(string message)
{
RichTextTool rtt = new RichTextTool(ref richTextBoxResolution);
rtt.AppendText(message);
}
