Method _convertColonHostContext

packages/compiler/src/shadow_css.ts:505–514

(cssText: string)

   * .foo<scopeName> .bar { ... }
   */
  private _convertColonHostContext(cssText: string): string {
    // Splits up the selectors on their top-level commas, processes the :host-context in them
    // individually and stitches them back together. This ensures that individual selectors don't
    // affect each other.
    const results: string[] = [];
    for (const part of this._splitOnTopLevelCommas(cssText, false)) {
      results.push(this._convertColonHostContextInSelectorPart(part));
    }
    return results.join(',');
  }

  private _convertColonHostContextInSelectorPart(cssText: string): string {
    return cssText.replace(_cssColonHostContextReGlobal, (selectorText, pseudoPrefix) => {