Macro.php

<?php
/*
 * citeproc-php
 *
 * @link        http://github.com/seboettg/citeproc-php for the source repository
 * @copyright   Copyright (c) 2016 Sebastian Böttger.
 * @license     https://opensource.org/licenses/MIT
 */
 
namespace Seboettg\CiteProc\Style;
 
use Seboettg\CiteProc\Data\DataList;
use Seboettg\CiteProc\Exception\CiteProcException;
use Seboettg\CiteProc\Rendering\HasParent;
use Seboettg\CiteProc\Rendering\Rendering;
use Seboettg\CiteProc\Root\Root;
use Seboettg\CiteProc\Styles\ConsecutivePunctuationCharacterTrait;
use Seboettg\CiteProc\Util\Factory;
use Seboettg\Collection\ArrayList;
use SimpleXMLElement;
 
class Macro implements Rendering, HasParent
{
    use ConsecutivePunctuationCharacterTrait;
 
    private $children;
 
    private $name;
 
    private $parent;
    public function __construct(SimpleXMLElement $node, $parent)
    {
        $this->parent = $parent;
        $attr = $node->attributes();
        if (!isset($attr['name'])) {
            throw new CiteProcException("Attribute \"name\" needed.");
        }
        $this->name = (string) $attr['name'];
 
        $this->children = new ArrayList();
        foreach ($node->children() as $child) {
            $this->children->append(Factory::create($child, $this));
        }
    }
 
    public function render($data, $citationNumber = null)
    {
        $ret = [];
        foreach ($this->children as $child) {
            $res = $child->render($data, $citationNumber);
            $this->getChildsAffixesAndDelimiter($child);
            if (!empty($res)) {
                $ret[] = $res;
            }
        }
        $res = implode("", $ret);
        if (!empty($res)) {
            $res = $this->removeConsecutiveChars($res);
        }
        return $res;
    }
 
    public function getName()
    {
        return $this->name;
    }
 
    public function getParent()
    {
        return $this->parent;
    }
}