/**
* Parse the given content.
*
* Any newly created nodes should be pushed to the stack. Any remaining content should be passed to the next parser
* in the chain.
*
* @param Text $content
* @param Container $target
* @return void
*/
public function parseBlock(Text $content, Container $target)
{
$content->handle('{
^(?:
([ ]{0,3}) #1 Initial indentation
( #2 Fence
([`~]) #3 The fence character (` or ~)
\\3{2,} # At least two remaining fence characters
)
([^`\\n]*?)? #4 Code language [optional]
(?:
\\n(.*?) #5 Code block
)?
(?:(?<=\\n)([ ]{0,3}\\2\\3*[ ]*)|\\z) # Closing fence or end of document
)$
}msx', function (Text $whole, Text $whitespace, Text $fence, Text $fenceChar, Text $lang, Text $code = null) use($target) {
$leading = $whitespace->getLength();
$code = $code ?: new Text();
$language = new Text(explode(' ', $lang->trim())[0]);
$language->decodeEntities();
// Remove all leading whitespace from content lines
if ($leading > 0) {
$code->replace("/^[ ]{0,{$leading}}/m", '');
}
$target->addChild(new CodeBlock($code, $language));
}, function (Text $part) use($target) {
$this->next->parseBlock($part, $target);
});
}
