private static void Map(char c, ref RegExNfaEvaluationNode current, ref RegExNfaEvaluationNode spare)
{
current.MapTo(c, spare);
var tmp = current;
current = spare;
spare = tmp;
spare.Reset();
}
public void MapTo(char c, RegExNfaEvaluationNode target)
{
for (var i = 0; i < _numMembers; i++)
{
var nfa = _states[_members[i]];
var nfaMap = nfa.Map;
var cnt = nfaMap.Count;
for (var j = 0; j < cnt; j++)
{
var range = nfaMap[j];
if (range.Key.Min <= c && c <= range.Key.Max)
{
target.Apply(range.Value); // c is contained in [Key.Min;Key.Max]
}
}
}
}