private ChainLink TryGroup(ChainLink part, List <ChainLink> groupedLink)
{
var existingLink = groupedLink.SingleOrDefault(e => e.Equals(part));
if (existingLink == null)
{
existingLink = new ChainLink(
part.FieldName,
part.UseAlias,
part.Arguments,
new List <ChainLink>());
existingLink.Fragment = part.Fragment;
groupedLink.Add(existingLink);
}
return(existingLink);
}
public IEnumerable <ChainLink> Group()
{
var rootLinks = new List <ChainLink>();
foreach (var chain in this.context.SelectionChains)
{
var groupedLink = rootLinks;
ChainLink lastLink = null;
foreach (var part in chain.Links)
{
lastLink = this.TryGroup(part, groupedLink);
groupedLink = lastLink.Children as List <ChainLink>;
}
lastLink?.Nodes.Add(chain.Node);
}
return(rootLinks);
}