public void Add(IGraphBuildInstruction head)
{
if (head.InstructionType is diagramNodeShapeEnum nodeShapeType)
{
if (!current_span.IsDeclared)
{
DeclareSpan(head, InstructionSpanType.node);
}
else
{
if (current_span.Type == InstructionSpanType.link)
{
current_span.Add(head);
CloseSpan();
}
else
{
CloseSpan();
DeclareSpan(head, InstructionSpanType.node);
}
}
}
else if (head.InstructionType is diagramLinkTypeEnum linkShapeType)
{
if (!current_span.IsDeclared)
{
}
else
{
if (current_span.Type == InstructionSpanType.link)
{
current_span.Add(head);
}
else if (current_span.Type == InstructionSpanType.node)
{
var node_from_last_span = current_span.Last();
CloseSpan();
DeclareSpan(node_from_last_span, InstructionSpanType.link);
current_span.Add(head);
}
}
}
else if (head.InstructionType == null)
{
CloseSpan();
}
}
private void DeclareSpan(IGraphBuildInstruction head, InstructionSpanType type)
{
current_span.Type = type;
current_span.Add(head);
}
