46 lines
1.0 KiB
TypeScript
46 lines
1.0 KiB
TypeScript
export class Node<Props = unknown> {
|
|
private readonly _children: Node[] = []
|
|
|
|
constructor(public props: Props) {}
|
|
|
|
get children(): readonly Node[] {
|
|
return this._children
|
|
}
|
|
|
|
clear() {
|
|
this._children.splice(0)
|
|
}
|
|
|
|
add(...nodes: Node[]) {
|
|
this._children.push(...nodes)
|
|
}
|
|
|
|
remove(node: Node) {
|
|
const index = this._children.indexOf(node)
|
|
if (index !== -1) this._children.splice(index, 1)
|
|
}
|
|
|
|
insertBefore(node: Node, beforeNode: Node) {
|
|
const index = this._children.indexOf(beforeNode)
|
|
if (index !== -1) this._children.splice(index, 0, node)
|
|
}
|
|
|
|
replace(oldNode: Node, newNode: Node) {
|
|
const index = this._children.indexOf(oldNode)
|
|
if (index !== -1) this._children[index] = newNode
|
|
}
|
|
|
|
clone(): this {
|
|
const cloned: this = new (this.constructor as any)()
|
|
cloned.add(...this.children.map((child) => child.clone()))
|
|
return cloned
|
|
}
|
|
|
|
*walk(): Generator<Node> {
|
|
yield this
|
|
for (const child of this.children) {
|
|
yield* child.walk()
|
|
}
|
|
}
|
|
}
|