private static RowRegexExprNodeAlteration ExpandPermute(RowRegexExprNodePermute permute)
{
var e = PermutationEnumerator.Create(permute.ChildNodes.Count);
var parent = new RowRegexExprNodeAlteration();
foreach (int[] indexes in e)
{
var concat = new RowRegexExprNodeConcatenation();
parent.AddChildNode(concat);
for (var i = 0; i < indexes.Length; i++)
{
RowRegexExprNode toCopy = permute.ChildNodes[indexes[i]];
var copy = CheckedCopy(toCopy);
concat.AddChildNode(copy);
}
}
return(parent);
}
public RowRegexPermuteDesc(RowRegexExprNodePermute permute, RowRegexExprNode optionalParent, int level)
{
Permute = permute;
OptionalParent = optionalParent;
Level = level;
}