Class TQueries_

packages/core/src/render3/queries/query.ts:110–171

}

class TQueries_ implements TQueries {
  constructor(private queries: TQuery[] = []) {}

  elementStart(tView: TView, tNode: TNode): void {
    ngDevMode &&
      assertFirstCreatePass(
        tView,
        'Queries should collect results on the first template pass only',
      );
    for (let i = 0; i < this.queries.length; i++) {
      this.queries[i].elementStart(tView, tNode);
    }
  }
  elementEnd(tNode: TNode): void {
    for (let i = 0; i < this.queries.length; i++) {
      this.queries[i].elementEnd(tNode);
    }
  }
  embeddedTView(tNode: TNode): TQueries | null {
    let queriesForTemplateRef: TQuery[] | null = null;

    for (let i = 0; i < this.length; i++) {
      const childQueryIndex = queriesForTemplateRef !== null ? queriesForTemplateRef.length : 0;
      const tqueryClone = this.getByIndex(i).embeddedTView(tNode, childQueryIndex);

      if (tqueryClone) {
        tqueryClone.indexInDeclarationView = i;
        if (queriesForTemplateRef !== null) {
          queriesForTemplateRef.push(tqueryClone);
        } else {
          queriesForTemplateRef = [tqueryClone];
        }
      }
    }

    return queriesForTemplateRef !== null ? new TQueries_(queriesForTemplateRef) : null;
  }

  template(tView: TView, tNode: TNode): void {
    ngDevMode &&
      assertFirstCreatePass(
        tView,
        'Queries should collect results on the first template pass only',
      );
    for (let i = 0; i < this.queries.length; i++) {
      this.queries[i].template(tView, tNode);
    }
  }

  getByIndex(index: number): TQuery {
    ngDevMode && assertIndexInRange(this.queries, index);
    return this.queries[index];
  }

  get length(): number {
    return this.queries.length;
  }