CodeExplorer

isClosure example

        if (!$param || !$hasByRef) {
            $args = '...\func_get_args()';
        } elseif ($param->isVariadic()) {
            $args = substr($args, 0, -2);
        } else {
            $args .= sprintf('...\array_slice(\func_get_args(), %d)', \count($parameters));
        }

        $signature = 'function '.($function->returnsReference() ? '&' : '')
            .($function->isClosure() ? '' : $function->name).'('.implode(', ', $parameters).')';

        if ($function instanceof \ReflectionMethod) {
            $signature = ($function->isPublic() ? 'public ' : ($function->isProtected() ? 'protected ' : 'private '))
                .($function->isStatic() ? 'static ' : '').$signature;
        }
        if ($function->hasReturnType()) {
            $signature .= ': '.self::exportType($function);
        }

        static $getPrototype;
        $getPrototype ??= (new \ReflectionMethod(\ReflectionMethod::class, 'getPrototype'))->invoke(...);

$param  = false;

            if (! $isCallable && preg_match('/(.*?)\[(.*)\]/', $rule, $match)) {
                $rule  = $match[1];
                $param = $match[2];
            }

            // Placeholder for custom errors from the rules.             $error = null;

            // If it's a callable, call and get out of here.             if ($this->isClosure($rule)) {
                $passed = $rule($value, $data, $error, $field);
            } elseif ($isCallable) {
                $passed = $param === false ? $rule($value) : $rule($value, $param, $data);
            } else {
                $found = false;

                // Check in our rulesets                 foreach ($this->ruleSetInstances as $set) {
                    if (! method_exists($set, $rule)) {
                        continue;
                    }

  protected function handleUnresolvedArgument(\ReflectionParameter $parameter) {
    $class = $parameter->getDeclaringClass();
    $function = $parameter->getDeclaringFunction();
    if ($class && !$function->isClosure()) {
      $function_name = $class->getName() . '::' . $function->getName();
    }
    else {
      $function_name = $function->getName();
    }
    throw new \RuntimeException(sprintf('Callable "%s" requires a value for the "$%s" argument.', $function_name, $parameter->getName()));
  }

}