Method last

cursor.go:190–211

last moves the cursor to the last leaf element under the last page in the stack.

()

// last moves the cursor to the last leaf element under the last page in the stack.
func (c *Cursor) last() {
	for {
		// Exit when we hit a leaf page.
		ref := &c.stack[len(c.stack)-1]
		if ref.isLeaf() {
			break
		}

		// Keep adding pages pointing to the last element in the stack.
		var pgId common.Pgid
		if ref.node != nil {
			pgId = ref.node.inodes[ref.index].Pgid()
		} else {
			pgId = ref.page.BranchPageElement(uint16(ref.index)).Pgid()
		}
		p, n := c.bucket.pageNode(pgId)

		var nextRef = elemRef{page: p, node: n}
		nextRef.index = nextRef.count() - 1
		c.stack = append(c.stack, nextRef)
	}
}

// next moves to the next leaf element and returns the key and value.
// If the cursor is at the last leaf element then it stays there and returns nil.