private INonbacktrackingAssertion ParseNonbacktrackingAssertion()
{
++index; // swallow the '>'
var item = Parse();
return(NonbacktrackingAssertion.Of(item));
}
/// <summary>
/// Creates a group that cannot be backtracked.
/// </summary>
/// <returns>The non-backtracked expression group.</returns>
public static INonbacktrackingAssertion From(IEnumerable <IExpression> members)
{
if (members == null)
{
throw new ArgumentNullException(nameof(members));
}
var group = new NonbacktrackingAssertion();
foreach (var expression in members)
{
group.Add(expression);
}
return(group);
}