public void Generate(string strExp)
{
lexer = new Lexer();
var tokens = lexer.Tokenize(strExp);
expression = parser.Parse(tokens);
if (!expression.ResultType.HasFlagNI(ExpressionResultType.Boolean))
throw new NotSupportedException();
expressions = Helpers.ConvertExpressionToCollection(expression);
parameters = Helpers.GetParameters(tokens);
table = new List<TruthTableRowViewModel>();
var parametersCount = parameters.Count();
for (int i = (int)Math.Pow(2, parametersCount) - 1; i >= 0; i--)
{
SetBits(i, parametersCount);
var b = (bool)expression.Execute(parameters);
var row = new TruthTableRowViewModel(parametersCount, expressions.Count());
row.Index = (int)Math.Pow(2, parametersCount) - i;
for (int j = 0; j < parametersCount; j++)
row.VarsValues[j] = (bool)parameters[parameters.ElementAt(j).Key];
for (int j = 0; j < expressions.Count() - 1; j++)
row.Values[j] = (bool)expressions.ElementAt(j).Execute(parameters);
if (expressions.Count() != 0)
row.Result = b;
table.Add(row);
}
}
/// <summary>
/// Parses the specified function.
/// </summary>
/// <param name="function">The function.</param>
/// <returns>The parsed expression.</returns>
/// <exception cref="ArgumentNullException"><paramref name="function"/> is null.</exception>
/// <exception cref="ParserException">Error while parsing.</exception>
public IExpression Parse(string function)
{
return(Parser.Parse(Lexer.Tokenize(function)));
}