Method _readHostObject

lib/v8.js:475–494

* Used to read some kind of host object, i.e. an * object that is created by native C++ bindings. * @returns {any}

()

   * @returns {any}
   */
  _readHostObject() {
    const typeIndex = this.readUint32();
    const ctor = arrayBufferViewIndexToType(typeIndex);
    const byteLength = this.readUint32();
    const byteOffset = this._readRawBytes(byteLength);
    const BYTES_PER_ELEMENT = ctor.BYTES_PER_ELEMENT || 1;

    const offset = this.buffer.byteOffset + byteOffset;
    if (offset % BYTES_PER_ELEMENT === 0) {
      return new ctor(this.buffer.buffer,
                      offset,
                      byteLength / BYTES_PER_ELEMENT);
    }
    // Copy to an aligned buffer first.
    const buffer_copy = Buffer.allocUnsafe(byteLength);
    buffer_copy.set(new Uint8Array(this.buffer.buffer, this.buffer.byteOffset + byteOffset, byteLength));
    return new ctor(buffer_copy.buffer,
                    buffer_copy.byteOffset,
                    byteLength / BYTES_PER_ELEMENT);
  }
}

/**