public void TestNullable_Create()
{
var nullable = new NullableTable();
var expected = true;
var actual = _repository.Create(nullable);
Assert.IsTrue(actual == expected, $"expected: {expected}, but received: {actual}");
Assert.IsTrue(_repository.GetAll().Count() == 4);
}
public void TestNullable_Create_NotNull()
{
var nullable = new NullableTable
{
Age = 1,
DoB = DateTime.Now,
lolVal = Guid.NewGuid()
};
var expected = true;
var actual = _repository.Create(nullable);
Assert.IsTrue(actual == expected, $"expected: {expected}, but received: {actual}");
Assert.IsTrue(_repository.GetAll().Count() == 4);
}
public static NullableComputer Compute(LL1Algo algo)
{
var iterations = new List <NullableTable>();
var nullable = new NullableTable();
// initialize first iteration
foreach (var A in algo.Thecfg.Nonterminals)
{
nullable.Add(A, false);
}
do
{
if (iterations.Count == 0)
{
iterations.Add(nullable);
}
else
{
iterations.Add(new NullableTable(nullable));
}
nullable = iterations.Last();
foreach (var prod in algo.Thecfg.Productions)
{
if (prod.DerivesToNull ||
prod.Rhs.All(e => e.Type == Symbol.Types.NonTerminal && nullable[e]))
{
nullable[prod.Lhs] = true;
}
}
// stop loop if no changes between iterations
} while (iterations.Count == 1 ||
nullable.Except(iterations[iterations.Count - 2]).Any());
return(new NullableComputer(algo, iterations));
}
