public ListRand Deserialize(IEnumerable <string> fileLines)
{
var idMappings = new Dictionary <int, ListNode>();
var fileLinesStream = new FileLinesStream(fileLines);
var converter = new ListRandConverter();
var list = converter.ToListRand(fileLinesStream, idMappings);
return(list);
}
public ListNode ToNode(FileLinesStream fileLines, Dictionary <int, ListNode> idMappings)
{
var line = fileLines.Peek();
if (line != Constants.ObjectSymbols.Start)
{
return(null);
}
var node = new ListNode();
line = fileLines.Next();
while (line != null)
{
var(name, value) = Split(line);
switch (name)
{
case Constants.ObjectSymbols.ListNode.Id:
if (string.IsNullOrEmpty(value))
{
throw new FileHasIncorrectFormat();
}
node = ToLinkFromString(value, idMappings);
break;
case nameof(node.Prev):
node.Prev = ToLinkFromString(value, idMappings);
break;
case nameof(node.Next):
node.Next = ToLinkFromString(value, idMappings);
break;
case nameof(node.Rand):
node.Rand = ToLinkFromString(value, idMappings);
break;
case nameof(node.Data):
node.Data = value.FromLiteral();
break;
case Constants.ObjectSymbols.End:
fileLines.Next();
return(node);
default:
throw new FileHasIncorrectFormat();
}
line = fileLines.Next();
}
return(node);
}
public ListRand ToListRand(FileLinesStream fileLines, Dictionary <int, ListNode> idMappings)
{
var element = fileLines.Peek();
if (element != Constants.ObjectSymbols.Start)
{
return(null);
}
var list = new ListRand();
var line = fileLines.Next();
while (line != null)
{
var(name, value) = Split(line);
switch (name)
{
case nameof(list.Head):
list.Head = ToLink(value, idMappings);
break;
case nameof(list.Tail):
list.Tail = ToLink(value, idMappings);
break;
case nameof(list.Count):
list.Count = int.Parse(value);
break;
case Constants.ObjectSymbols.ListRand.Nodes:
if (value != Constants.ArraySymbols.Start)
{
throw new FileHasIncorrectFormat();
}
fileLines.Next();
ListNode node = null;
do
{
var nodeConverter = new ListNodeConverter();
node = nodeConverter.ToNode(fileLines, idMappings);
} while (node != null);
var command = fileLines.Peek();
if (command != Constants.ArraySymbols.End)
{
throw new FileHasIncorrectFormat();
}
break;
case Constants.ObjectSymbols.End:
fileLines.Next();
return(list);
default:
throw new FileHasIncorrectFormat();
}
line = fileLines.Next();
}
return(list);
}
