public function addConstructorWrapperFunc()

in src/CodegenClass.hack [114:151]
34 lines of code
6 McCabe index (conditional complexity)

  public function addConstructorWrapperFunc(
    ?Container<string> $params = null,
  ): this {
    // Check if parameters are specified explicitly
    $param_full = null;
    if ($params) {
      $param_full = $params;
    } else if ($this->constructor) {
      $param_full = $this->constructor->getParameters();
    }

    if ($param_full !== null) {
      // Extract variable names from parameters
      $param_names = vec[];
      $re = re"/\\\$[a-zA-Z_\\x7f-\\xff][a-zA-Z0-9_\\x7f-\\xff]*/";
      foreach ($param_full as $str) {
        foreach (Regex\every_match($str, $re) as $match) {
          $param_names[] = $match[0];
        }
      }
      $params_str = Str\join( $param_names, ', ');
      $body = 'return new '.$this->getName().'('.$params_str.');';

      $this->wrapperFunc = (
        new CodegenFunction($this->config, $this->getName())
      )
        ->addParameters($param_full)
        ->setReturnType($this->getName())
        ->setBody($body);
    } else {
      $this->wrapperFunc = (
        new CodegenFunction($this->config, $this->getName())
      )
        ->setReturnType($this->getName())
        ->setBody('return new '.$this->getName().'();');
    }
    return $this;
  }