League\CommonMark\Extension\CommonMark\Delimiter\Processor\EmphasisDelimiterProcessor

Complexity

Total Complexity

21

Size/Duplication

Total Lines	85
Duplicated Lines	0 %

Test Coverage

Coverage

91.18%

Importance

Changes

0

7 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	3	1
A	process()	0	18	5
A	getOpeningCharacter()	0	3	1
B	getDelimiterUse()	0	21	11
A	getClosingCharacter()	0	3	1
A	getMinLength()	0	3	1
A	setConfiguration()	0	3	1

<?php

declare(strict_types=1);

/*
 * This file is part of the league/commonmark package.
 *
 * (c) Colin O'Dell <colinodell@gmail.com>
 *
 * Original code based on the CommonMark JS reference parser (https://bitly.com/commonmark-js)
 *  - (c) John MacFarlane
 *
 * Additional emphasis processing code based on commonmark-java (https://github.com/atlassian/commonmark-java)
 *  - (c) Atlassian Pty Ltd
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace League\CommonMark\Extension\CommonMark\Delimiter\Processor;

use League\CommonMark\Configuration\ConfigurationAwareInterface;
use League\CommonMark\Configuration\ConfigurationInterface;
use League\CommonMark\Delimiter\DelimiterInterface;
use League\CommonMark\Delimiter\Processor\DelimiterProcessorInterface;
use League\CommonMark\Extension\CommonMark\Node\Inline\Emphasis;
use League\CommonMark\Extension\CommonMark\Node\Inline\Strong;
use League\CommonMark\Node\Inline\AbstractStringContainer;

final class EmphasisDelimiterProcessor implements DelimiterProcessorInterface, ConfigurationAwareInterface
{
    /**
     * @var string
     *
     * @psalm-readonly
     */
    private $char;

    /**
     * @var ConfigurationInterface|null
     *
     * @psalm-readonly-allow-private-mutation
     */
    private $config;

    /**
     * @param string $char The emphasis character to use (typically '*' or '_')
     */
    public function __construct(string $char)
    {
        $this->char = $char;
    }

    public function getOpeningCharacter(): string
    {
        return $this->char;
    }

    public function getClosingCharacter(): string
    {
        return $this->char;
    }

    public function getMinLength(): int
    {
        return 1;
    }

    public function getDelimiterUse(DelimiterInterface $opener, DelimiterInterface $closer): int
    {
        // "Multiple of 3" rule for internal delimiter runs
        if (($opener->canClose() || $closer->canOpen()) && $closer->getOriginalLength() % 3 !== 0 && ($opener->getOriginalLength() + $closer->getOriginalLength()) % 3 === 0) {
            return 0;
        }

        // Calculate actual number of delimiters used from this closer
        if ($opener->getLength() >= 2 && $closer->getLength() >= 2) {
            if ($this->config && $this->config->get('enable_strong', true)) {
                return 2;
            }

            return 0;
        }

        if ($this->config && $this->config->get('enable_em', true)) {
            return 1;
        }

        return 0;
    }

    public function process(AbstractStringContainer $opener, AbstractStringContainer $closer, int $delimiterUse): void
    {
        if ($delimiterUse === 1) {
            $emphasis = new Emphasis();
        } elseif ($delimiterUse === 2) {
            $emphasis = new Strong();
        } else {
            return;
        }

        $next = $opener->next();
        while ($next !== null && $next !== $closer) {
            $tmp = $next->next();
            $emphasis->appendChild($next);
            $next = $tmp;
        }

        $opener->insertAfter($emphasis);
    }

    public function setConfiguration(ConfigurationInterface $configuration): void
    {
        $this->config = $configuration;
    }
}