/// <summary>
/// Get an assignment designed to match a given crew member.
/// </summary>
/// <param name="crew"></param>
/// <returns></returns>
public static Assignment ForCrew(ProtoCrewMember crew)
{
if (crew == null)
{
return(Empty);
}
List <AssignmentNode> nodes = new List <AssignmentNode>(3);
nodes.Add(AssignmentNode.ByName(crew));
nodes.Add(AssignmentNode.ByProfession(crew));
nodes.Add(AssignmentNode.ByType(crew));
return(new Assignment(nodes));
}
public override bool Equals(object obj)
{
if (object.ReferenceEquals(this, obj))
{
return(true);
}
AssignmentNode other = obj as AssignmentNode;
if (other == null)
{
return(false);
}
return((Type == other.Type) && (value == other.value));
}
/// <summary>
/// Pops off the head of the assignment node list and returns it (null if none left).
/// </summary>
/// <returns></returns>
private AssignmentNode Pop()
{
if (nodes.Count == 0)
{
return(null);
}
AssignmentNode node = nodes[0];
if (node.Type != AssignmentType.Empty)
{
nodes.RemoveAt(0);
}
return(node);
}
public override string ToString()
{
if (nodes.Count == 0)
{
return(string.Empty);
}
if (nodes[0].Type == AssignmentType.Empty)
{
return(nodes[0].ToString());
}
StringBuilder builder = new StringBuilder(nodes[0].ToString());
for (int index = 1; index < nodes.Count; ++index)
{
AssignmentNode node = nodes[index];
builder.Append("|").Append(node.ToString());
if (node.Type == AssignmentType.Empty)
{
break;
}
}
return(builder.ToString());
}
/// <summary>
/// Parse an assignment from a text string.
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public static Assignment Parse(string text)
{
List <AssignmentNode> nodes = new List <AssignmentNode>();
if (text != null)
{
text = text.Trim();
string[] tokens = text.Split('|');
foreach (string token in tokens)
{
AssignmentNode node = AssignmentNode.Parse(token);
if (node == null)
{
break;
}
nodes.Add(node);
if (node.Type == AssignmentType.Empty)
{
break;
}
}
}
return((nodes.Count == 0) ? null : new Assignment(nodes));
}