Function countBindings

packages/core/src/render3/i18n/i18n_parse.ts:477–487

* Count the number of bindings in the given `opCodes`. * * It could be possible to speed this up, by passing the number of bindings found back from * `generateBindingUpdateOpCodes()` to `i18nAttributesFirstPass()` but this would then require more * complexity in the code and/or transient objects

(opCodes: I18nUpdateOpCodes)

 * contain multiple i18n bound attributes, it seems like this is a reasonable compromise.
 */
function countBindings(opCodes: I18nUpdateOpCodes): number {
  let count = 0;
  for (let i = 0; i < opCodes.length; i++) {
    const opCode = opCodes[i];
    // Bindings are negative numbers.
    if (typeof opCode === 'number' && opCode < 0) {
      count++;
    }
  }
  return count;
}

/**
 * Convert binding index to mask bit.