private void UnselectAll()
{
// unselect all
GrammarNodeDUnselectVisitor visitor = new GrammarNodeDUnselectVisitor();
foreach (NonterminalHeadD nont in model.DefinitiveGrammar.Nonterminals)
{
visitor.visit(nont);
}
}
private void previewButton_Click(object sender, RoutedEventArgs e)
{
try
{
this.Cursor = Cursors.Wait;
Factorisation factorisation = analysisOptions.SelectedItem as Factorisation;
if (factorisation == null)
throw new Exception("You did not select a factorisation option");
String newRule = "NewRule_" + new Random().Next(0, 9999).ToString();
String currentGrammarStr = model.DefinitiveGrammar.PrintGrammar();
String newGrammarStr = factorisation.applyRule(currentGrammarStr, newRule);
GrammarModel newModel = new GrammarModel(newGrammarStr);
newGrammar = new GrammarModel(newModel.DefinitiveGrammar);
// highlight rules that are being factorised
// first unselect any rules selected
GrammarNodeDUnselectVisitor visitor = new GrammarNodeDUnselectVisitor();
model.DefinitiveGrammar.StartSymbol.accept(visitor);
newModel.DefinitiveGrammar.StartSymbol.accept(visitor);
foreach (NonterminalHeadD nont in factorisation.NontHeads)
{
model.DefinitiveGrammar.getNonterminal(nont.Name).IsSelected = true;
newModel.DefinitiveGrammar.getNonterminal(nont.Name).IsSelected = true;
}
newModel.DefinitiveGrammar.getNonterminal(newRule).IsSelected = true;
// print grammars
currentGrammar.Document = model.DefinitiveGrammar.PrintGrammarRich();
previewGrammar.Document = newModel.DefinitiveGrammar.PrintGrammarRich();
this.Cursor = Cursors.Arrow;
}
catch (Exception ex)
{
this.Cursor = Cursors.Arrow;
MessageBox.Show(ex.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
this.Close();
}
}
