public function processInlines(ArrayCollection $inlines, DelimiterStack $delimiterStack, Delimiter $stackBottom = null)
{
$callback = function (Delimiter $opener, Delimiter $closer, DelimiterStack $stack) use($inlines) {
// Calculate actual number of delimiters used from this closer
if ($closer->getNumDelims() < 3 || $opener->getNumDelims() < 3) {
$useDelims = $closer->getNumDelims() <= $opener->getNumDelims() ? $closer->getNumDelims() : $opener->getNumDelims();
} else {
$useDelims = $closer->getNumDelims() % 2 === 0 ? 2 : 1;
}
/** @var Text $openerInline */
$openerInline = $inlines->get($opener->getPos());
/** @var Text $closerInline */
$closerInline = $inlines->get($closer->getPos());
// Remove used delimiters from stack elts and inlines
$opener->setNumDelims($opener->getNumDelims() - $useDelims);
$closer->setNumDelims($closer->getNumDelims() - $useDelims);
$openerInline->setContent(substr($openerInline->getContent(), 0, -$useDelims));
$closerInline->setContent(substr($closerInline->getContent(), 0, -$useDelims));
// Build contents for new emph element
$start = $opener->getPos() + 1;
$contents = $inlines->slice($start, $closer->getPos() - $start);
$contents = array_filter($contents);
if ($useDelims === 1) {
$emph = new Emphasis($contents);
} else {
$emph = new Strong($contents);
}
// Insert into list of inlines
$inlines->set($opener->getPos() + 1, $emph);
for ($i = $opener->getPos() + 2; $i < $closer->getPos(); $i++) {
$inlines->set($i, null);
}
// Remove elts btw opener and closer in delimiters stack
$tempStack = $closer->getPrevious();
while ($tempStack !== null && $tempStack !== $opener) {
$nextStack = $tempStack->getPrevious();
$stack->removeDelimiter($tempStack);
$tempStack = $nextStack;
}
// If opener has 0 delims, remove it and the inline
if ($opener->getNumDelims() === 0) {
$inlines->set($opener->getPos(), null);
$stack->removeDelimiter($opener);
}
if ($closer->getNumDelims() === 0) {
$inlines->set($closer->getPos(), null);
$tempStack = $closer->getNext();
$stack->removeDelimiter($closer);
return $tempStack;
}
return $closer;
};
// Process the emphasis characters
$delimiterStack->iterateByCharacters(['_', '*'], $callback, $stackBottom);
// Remove gaps
$inlines->removeGaps();
// Remove all delimiters
$delimiterStack->removeAll($stackBottom);
}
public function replaceChild(ContextInterface $context, AbstractBlock $original, AbstractBlock $replacement)
{
if (($index = $this->children->indexOf($original)) !== false) {
$this->children->remove($index);
$replacement->setParent($this);
$this->children->set($index, $replacement);
} else {
$this->addChild($replacement);
}
if ($context->getTip() === $original) {
$context->setTip($replacement);
}
}
/**
* @param ArrayCollection $collection
* @param int $start
* @param int $end
*/
protected function nullify(ArrayCollection $collection, $start, $end)
{
for ($i = $start; $i < $end; $i++) {
$collection->set($i, null);
}
}