public JsonNode Pred2parent(ref DebugVisual dv)
{ // 3 Parent / Pred, -, -
JsonNode retVal = pred;
retVal.next = null; // Link Pred -> Next(=null)
pred = null;
dv?.update(this, -2);
parent = null;
dv?.update(this, -1);
return(retVal); // next @pred (last node in a row)
}
public JsonNode Next2next(ref DebugVisual dv)
{ // 9 Parent / - , - , Next
JsonNode retVal = next;
parent.node = next;
next.parent = parent; // null not set by parser
dv?.update(this);
next.pred = null;
dv?.update(this);
next = null;
dv?.update(this, -8);
parent = null;
dv?.update(this, -1);
return(retVal);
}
public JsonNode DeleteNode2next(ref DebugVisual dv)
{ // 13 Parent / - , Node, Next
JsonNode retVal = next, retVal2 = parent;
retVal.pred = null;
parent.node = next;
next.parent = parent; // null not set by parser
parent = null;
dv?.update(this, -1);
next = null;
dv?.update(this, -8);
node = null;
dv?.update(this, -4);
return(retVal ?? retVal2);
}
public JsonNode RemoveEmpties(JsonNode removed, Byte[] src)
{
if (Tag != JsonTag.JSON_ARRAY && Tag != JsonTag.JSON_OBJECT
/*&& !(keyIdxes.data == 0 && doubleOrString.data == 0 && node == null)*/)
{
return(this); // only 2 types could be useless
}
int arround = 0;
if (parent != null)
{
arround = 1; // ↑
}
if (pred != null)
{
arround |= 2; // ←
}
if (node != null) // ↓
{
arround |= 4;
if (doubleOrString.data != 0)
{
return(this); // if has no value
}
}
if (next != null)
{
arround |= 8; // →
}
JsonNode retVal = null, retVal2 = null;
DebugVisual dv = null; // new DebugVisual(this, arround, src);
switch (arround)
{
case 1: // | Parent / -, -, -
retVal = parent;
parent = null;
retVal2 = retVal.parent;
if (retVal2 != null && retVal2?.parent != null) // not 4 root
{
retVal = retVal2.RemoveEmpties(retVal, src);
retVal.node = null;
dv?.update(retVal);
return(retVal);
}
retVal.node = null;
return(retVal);
case 3: // | Parent / Pred, -, -
retVal = parent;
pred.next = null;
parent = null;
pred = null;
dv?.update(retVal, -3);
return(retVal); // next @pred (last node in a row)
case 5: // Orphan, nested obj or array | Parent / -, Node, -
if (node != removed)
{
return(this);
}
retVal = Parent;
retVal2 = retVal.RemoveEmpties(this, src); // remove parent 2
retVal.node = null;
parent = null;
node.parent = null;
node = null; // clear me
if (retVal2 != null)
{
dv?.update(retVal2);
return(retVal2);
}
return(retVal?.parent ?? retVal);
case 7: // <-> a -> me => <-> a -> null | Parent / Pred, Node, -
if (this != removed.parent)
{
return(this);
}
retVal = Pred;
pred.next = null;
pred = null;
node = null; // clear me
parent = null;
dv?.update(retVal2);
return(retVal2);
case 9: // Parent / - , - , Next
retVal = next;
parent.node = next;
next.pred = null;
next.parent = parent; // null not set by parser
parent = null;
next = null;
dv?.update(retVal, -9);
return(retVal);
case 11: // Parent / Pred , - , Next
retVal = next;
next.parent = parent;
pred.next = next;
next.pred = pred;
next.parent = parent; // null not set by parser
dv?.update(this);
next = null;
pred = null;
retVal2 = parent;
parent = null;
dv?.update(retVal, -11);
return(retVal);
case 13: // me -> a | Parent / - , Node, Next
if (node != removed)
{
return(this);
}
retVal = DeleteNode2next(ref dv);
dv?.update(retVal);
return(retVal);
case 15: // a -> me -> b => a -> b | Parent, Pred, Node, Next
if (node != removed)
{
return(this);
}
retVal = next;
pred.next = next;
next.pred = pred;
next.parent = parent; // null not set by parser
pred = null;
node = null; // clear me
next = null;
parent = null;
dv?.update(retVal);
return(retVal);
default:
Console.WriteLine($"RemoveEmpties buggy node ({arround}) ?!");
break;
}
return(null);
}
public JsonNode RemoveCurrent(Byte[] src)
{
JsonNode retVal = null, retVal2 = null;
int arround = 0;
if (parent != null)
{
arround = 1; // ↑
}
if (pred != null)
{
arround |= 2; // ←
}
if (node != null)
{
arround |= 4; // ↓
}
if (next != null)
{
arround |= 8; // →
}
DebugVisual dv = null; // new DebugVisual(this, arround, src);
switch (arround)
{
case 1: // | Parent / -, -, -
retVal = parent;
retVal2 = parent?.parent;
parent.node = null;
parent = null;
retVal = retVal.RemoveEmpties(this, src);
retVal = retVal ?? retVal2;
dv?.update(retVal, -1);
return(retVal);
case 3: // | Parent / Pred, -, -
return(Pred2parent(ref dv));
//case 5: // Orphan, nested obj or array | Parent / -, Node, -
// retVal = Parent;
// if (retVal?.node.node == this)
// if (retVal.Tag == JsonTag.JSON_ARRAY
// || retVal.Tag == JsonTag.JSON_OBJECT)
// {
// retVal2 = retVal.RemoveEmpties(node, src); // remove parent 2
// }
// if (retVal?.Parent.NodeBelow != null) retVal = retVal?.Parent;
// if (retVal2 == null || retVal2.NodeBelow == null) return retVal;
// return retVal2;
//case 7: // <-> a -> me => <-> a -> null | Parent / Pred, Node, -
// retVal = Pred;
// if (!Pred.ReplaceNext(null)) return null; // Link Pred -> Next(=null)
// node = null;
// NodeBelow = null;
// return retVal;
case 9: // Parent / - , - , Next
return(Next2next(ref dv));
case 11: // Parent / Pred , - , Next
retVal = next;
pred.next = next;
next.pred = pred;
next.parent = parent; // null not set by parser
dv?.update(parent, -11);
return(next);
//case 13: // me -> a | Parent / - , Node, Next
// retVal = next;
// parent.node = next;
// next.parent = parent;
// node = null; // clear me
// return retVal; // next @next
//case 15: // a -> me -> b => a -> b | Parent, Pred, Node, Next
// pred.next = next;
// next.pred = pred;
// retVal = next;
// node = null; // clear me
// return retVal; // next @next
default:
Console.WriteLine($"RemoveCurrent buggy node ({arround}) ?!");
break;
}
return(null); // unreachable
}