/**
 * @author jdiaz5513
 */

import initTrace from "debug";

import { ListElementSize } from "../list-element-size";
import { _ListCtor, List, ListCtor } from "./list";
import { Pointer, PointerCtor, getContent, copyFrom } from "./pointer";

const trace = initTrace("capnp:list:composite");
trace("load");

export function PointerList<T extends Pointer>(PointerClass: PointerCtor<T>): ListCtor<T> {
  return class extends List<T> {
    static readonly _capnp: _ListCtor = {
      displayName: `List<${PointerClass._capnp.displayName}>`,
      size: ListElementSize.POINTER,
    };

    get(index: number): T {
      const c = getContent(this);
      return new PointerClass(c.segment, c.byteOffset + index * 8, this._capnp.depthLimit - 1);
    }

    set(index: number, value: T): void {
      copyFrom(value, this.get(index));
    }

    toString(): string {
      return `Pointer_${super.toString()},cls:${PointerClass.toString()}`;
    }
  };
}