Constructor Plugin Arguments

newInstanceArgs.php

<?php

    /**
     * @param string $name
     * @param array $args
     * @return object
     */
    protected function newInstanceArgs($name, array $args = [])
    {
        $class = new ReflectionClass($name);

        if (!$class->hasMethod('__construct')) {
            return $class->newInstance();
        }

        if ($args && !is_string(key($args))) {
            return $class->newInstanceArgs($this->args($args));
        }

        $matched = [];
        $params  = $class->getConstructor()->getParameters();

        foreach($params as $param) {
            if (isset($args[$param->name])) {
                $matched[] = $args[$param->name];
                continue;
            }

            if (Args::ARGS === $param->name) {
                $matched[] = $args;
                continue;
            }

            if ($match = $this->plugin($param->name)) {
                $matched[] = $match;
                continue;
            }

            if ($param->isDefaultValueAvailable()) {
                $matched[] = $param->getDefaultValue();
                continue;
            }

            if ($param->isArray()) {
                $matched[] = [];
                continue;
            }

            if (!$param->isOptional()) {
                throw new RuntimeException('Missing required parameter ' . $param->name);
            }

            $matched[] = null;
        }

        return $class->newInstanceArgs($params ? $matched : $this->args($args));
    }