public BuilderPipeline()
{
_head = new BuilderPipelineContext(new BuilderPipelineHead());
_last = new BuilderPipelineContext(new BuilderPipelineLast());
_head.Next = _last;
_last.Prev = _head;
}
public BuilderPipelineContext AddLast(IBuildHandler handler)
{
var context = new BuilderPipelineContext(handler);
var origin_prev = _last.Prev;
origin_prev.Next = context;
context.Prev = origin_prev;
_last.Prev = context;
return(context);
}
public static BuilderPipelineContext AddStep(this BuilderPipelineContext ctx, IBuildHandler nextHandler)
{
var nextContext = new BuilderPipelineContext(nextHandler);
var origin_next = ctx.Next;
ctx.Next = nextContext;
nextContext.Next = origin_next;
nextContext.Prev = ctx;
if (origin_next != null)
{
origin_next.Prev = nextContext;
}
return(nextContext);
}
public BuilderPipelineContext AddFirst(IBuildHandler handler)
{
var context = new BuilderPipelineContext(handler);
var _origin_first = _head.Next;
context.Next = _origin_first;
_head.Next = context;
context.Prev = _head;
if (_origin_first != null)
{
_origin_first.Prev = context;
}
return(context);
}
public BuilderPipelineContext(IBuildHandler handler)
{
_handler = handler;
Next = null;
Prev = null;
}
