import { CpNode } from "../cp-node.js";


/**
 * Returns all `CpNode`s between the two given ones (excluding the last one).
 * 
 * * If the second `CpNode` is never encountered all on the loop will be
 * returned.
 * 
 * @param cpNodeS start `CpNode`
 * @param cpNodeE end `CpNode`
 * @param inclAllIfEqual if `true` and first and last `CpNode`s are equal then
 * include all `CpNode`s around the loop, otherwise include none.
 */
function getAllBetween(
        cpNodeS: CpNode,
        cpNodeE: CpNode,
        inclAllIfEqual = true): {
            cpNodes: CpNode[],
            hasHoleCloser: boolean
        } {

    if (!inclAllIfEqual && cpNodeS === cpNodeE) {
        return { cpNodes: [], hasHoleCloser: false }
    }

    const cpStart = cpNodeS;
    const cpNodes: CpNode[] = [cpStart];

    let cpNode_ = cpNodeS.next;
    let hasHoleCloser = cpStart.isHoleClosing;

    while (cpNode_ !== cpNodeE &&
           cpNode_ !== cpStart) {

        if (cpNode_.isHoleClosing) {
            hasHoleCloser = true;
        }
        cpNodes.push(cpNode_);
        cpNode_ = cpNode_.next;
    }

    return { cpNodes, hasHoleCloser };
}


export { getAllBetween }