A node in a red-black binary search tree.
Declared in <bslalg_rbtreenode.h>
class RbTreeNode;This POD-like class describes a node suitable for use in a red-black binary search tree, holding the addresses of the parent, left-child, and right-child nodes (any of which may be 0), as well as a "color" (red or black). This class is a "POD-like" to facilitate efficient allocation and use in the context of a container implementation. In order to meet the essential requirements of a POD type, this class does not define a constructor or destructor. However its data members are private. Since this class will be aligned to a word boundary, a pointer type will be a multiple of 4. This class use this property to reduce its size by storing the color information in the least significant bit of the parent pointer. Note that this type does not contain any "payload" member data: Clients creating a red-black binary search tree must define an appropriate node type that incorporates RbTreeNode (generally via inheritance), and that holds the "key" value and any associated data.
| Name | Description |
|---|---|
Color | Enumeration of the two colors used by red-black tree nodes. |
| Name | Description |
|---|---|
color | Return the color of this node. |
isBlack | Return true if this node is black. |
isRed | Return true if this node is red. |
leftChild | leftChild overloads |
makeBlack | Set the color of this node to black. Note that this operation is at least as fast as (and potentially faster than) setColor. |
makeRed | Set the color of this node to red. Note that this operation is at least as fast as (and potentially faster than) setColor. |
parent | parent overloads |
reset | Reset this object to have the specified parent, leftChild, rightChild, and color property values. |
rightChild | rightChild overloads |
setColor | Set the color of this node to the specified value. |
setLeftChild | Set the left child of this node to the specified address. If address is 0, then this node will not have a left child. |
setParent | Set the parent of this node to the specified address. |
setRightChild | Set the right child of this node to the specified address. If address is 0, then this node will not have a right child. |
toggleColor | Set the color of this node to the alternative color. |
| Name | Description |
|---|---|
TreeNode | POD-like node for a red-black tree of parameterized VALUE objects. |