static public long ToNumber(Link link)
{
if (link == Net.Zero)
{
return(0);
}
else if (link == Net.One)
{
return(1);
}
else if (link.IsSum())
{
List <Link> numberParts = LinkConverter.ToList(link.Target);
long number = 0;
for (int i = 0; i < numberParts.Count; i++)
{
long numberPart;
GoDownAndTakeIt(numberParts[i], out numberPart);
number += numberPart;
}
return(number);
}
else
{
throw new ArgumentOutOfRangeException("link", "Specified link is not a number.");
}
}
static public bool TryGetName(this Link link, out string str)
{
if (!LinksWithNamesGatheringProcess.Add(link))
{
str = "...";
return(true);
}
else
{
try
{
if (link != null)
{
if (link.Linker == Net.And)
{
str = SequenceHelpers.FormatSequence(link);
return(true);
}
else if (link.IsGroup())
{
str = LinkConverter.ToString(LinkConverter.ToList(link.Target));
return(true);
}
else if (link.IsChar())
{
str = LinkConverter.ToChar(link).ToString();
return(true);
}
else if (TryGetSpecificName(link, out str))
{
return(true);
}
if (link.Source == link || link.Linker == link || link.Target == link)
{
return(false);
}
string sourceName, linkerName, targetName;
if (TryGetName(link.Source, out sourceName) && TryGetName(link.Linker, out linkerName) && TryGetName(link.Target, out targetName))
{
var sb = new StringBuilder();
sb.Append(sourceName).Append(' ').Append(linkerName).Append(' ').Append(targetName);
str = sb.ToString();
return(true);
}
}
str = null;
return(false);
}
finally
{
LinksWithNamesGatheringProcess.Remove(link);
}
}
}