private void AddToIdnTable(ref string token, ref int i)
{
if (OutputTokenTable.Table.Count != 0 && Checker.IsType(OutputTokenTable.Table.Last().Name))
{
if (IdnTable.Contains(token))
{
throw new Exception($"Error on {i + 1} line!\tThe variable '{token}' is already declared.");
}
else
{
IdnTable.Add(token);
}
}
else if (OutputTokenTable.Table.Count != 0 && OutputTokenTable.Table.Last().Name == ",")
{
if (IdnTable.Contains(token))
{
throw new Exception($"Error on {i + 1} line!\tThe variable '{token}' is already declared.");
}
else
{
IdnTable.Add(token);
}
}
else if (!IdnTable.Contains(token) && !TokenTable.Contains(token))
{
throw new Exception($"Error on {i + 1} line!\tThe variable '{token}' wasn't declared.");
}
}
private void CalculateButton_Click(object sender, RoutedEventArgs e)
{
resultTextBox.IsReadOnly = false;
errorsTextBox.IsReadOnly = false;
try
{
if (!string.IsNullOrEmpty(expressionTextBox.Text))
{
LexicalAnalyse.Analyser lexicalAnalyser = new LexicalAnalyse.Analyser();
if (variablesListView.Items.Count > 1)
{
for (int i = 0; i < variablesListView.Items.Count - 1; i++)
{
var ci = new DataGridCellInfo(variablesListView.Items[i], variablesListView.Columns[0]);
var varName = ((Variable)ci.Item).Name;
ci = new DataGridCellInfo(variablesListView.Items[i], variablesListView.Columns[1]);
var varValue = ((Variable)ci.Item).Value.ToString();
IdnTable.Add(varName, Double.Parse(varValue));
}
}
if (lexicalAnalyser.Parse(new string[] { "$ " + expressionTextBox.Text.Trim() + " $" }))
{
RelationshipsTable.InitTable();
OperatorPrecedenceMethod.Analyser syntaxAnalyser = new OperatorPrecedenceMethod.Analyser();
syntaxAnalyser.Parse();
resultTextBox.Text = syntaxAnalyser.GetPolisResult().ToString();
errorsTextBox.Text = syntaxAnalyser.Error;
}
else
{
errorsTextBox.Text = "Lexical error!";
}
resultTextBox.IsReadOnly = true;
errorsTextBox.IsReadOnly = true;
}
else
{
errorsTextBox.Text = "Error! Expression can't be null or empty. Please fill expression form.";
errorsTextBox.IsReadOnly = true;
MessageBox.Show("Error!");
}
}
catch (Exception ex)
{
MessageBox.Show($"ERROR! {ex.Message}");
}
}
