League\CommonMark\Inline\Parser\CloseBracketParser::parse PHP Метод

    public function parse(InlineParserContext $inlineContext)
    {
        $cursor = $inlineContext->getCursor();
        $startPos = $cursor->getPosition();
        $previousState = $cursor->saveState();
        // Look through stack of delimiters for a [ or !
        $opener = $inlineContext->getDelimiterStack()->searchByCharacter(['[', '!']);
        if ($opener === null) {
            return false;
        }
        if (!$opener->isActive()) {
            // no matched opener; remove from emphasis stack
            $inlineContext->getDelimiterStack()->removeDelimiter($opener);
            return false;
        }
        $isImage = $opener->getChar() === '!';
        $cursor->advance();
        // Check to see if we have a link/image
        if (!($link = $this->tryParseLink($cursor, $inlineContext->getReferenceMap(), $opener, $startPos))) {
            // No match
            $inlineContext->getDelimiterStack()->removeDelimiter($opener);
            // Remove this opener from stack
            $cursor->restoreState($previousState);
            return false;
        }
        $inline = $this->createInline($link['url'], $link['title'], $isImage);
        $opener->getInlineNode()->replaceWith($inline);
        while (($label = $inline->next()) !== null) {
            $inline->appendChild($label);
        }
        $delimiterStack = $inlineContext->getDelimiterStack();
        $stackBottom = $opener->getPrevious();
        foreach ($this->environment->getInlineProcessors() as $inlineProcessor) {
            $inlineProcessor->processInlines($delimiterStack, $stackBottom);
        }
        if ($delimiterStack instanceof DelimiterStack) {
            $delimiterStack->removeAll($stackBottom);
        }
        // processEmphasis will remove this and later delimiters.
        // Now, for a link, we also remove earlier link openers (no links in links)
        if (!$isImage) {
            $inlineContext->getDelimiterStack()->removeEarlierMatches('[');
        }
        return true;
    }