/**
* Adds a child to the class at the given index
*
* @param AbstractPattern $child Child to add
*
* @param int $index Index
*
* @return AlternationGroup
*
* @throws \REBuilder\Exception\Generic
*/
public function addChildAt(AbstractPattern $child, $index = null)
{
if (!$child instanceof Alternation) {
throw new \REBuilder\Exception\Generic("Alternation groups can contain only alternations");
}
return parent::addChildAt($child, $index);
}
/**
* Adds a child to the class at the given index
*
* @param AbstractPattern $child Child to add
* @param int $index Index
*
* @return CharClass
*
* @throws \REBuilder\Exception\Generic
*/
public function addChildAt(AbstractPattern $child, $index = null)
{
if (!$child->canBeAddedToCharClassRange()) {
throw new \REBuilder\Exception\Generic($this->_getClassName($child) . " cannot be added to character class ranges");
} elseif (count($this->getChildren()) === 2) {
throw new \REBuilder\Exception\Generic("Character class ranges can contain only 2 children");
}
return parent::addChildAt($child, $index);
}
/**
* Adds a child to the class at the given index
*
* @param AbstractPattern $child Child to add
* @param int $index Index
*
* @return CharClass
*
* @throws \REBuilder\Exception\Generic
*/
public function addChildAt(AbstractPattern $child, $index = null)
{
$childClass = get_class($child);
if (!in_array($childClass, $this->_childrenOrder)) {
throw new \REBuilder\Exception\Generic($this->_getClassName($child) . " cannot be added to conditional subpatterns");
}
$index = array_search($childClass, array_values($this->_childrenOrder));
if (!$this->_safeAdd) {
if (isset($this->_children[$index])) {
throw new \REBuilder\Exception\Generic($this->_getClassName($child) . " already present in conditional subpattern");
}
}
$this->_safeAdd = false;
return parent::addChildAt($child, $index);
}
/**
* Adds a child to the class at the given index
*
* @param AbstractPattern $child Child to add
* @param int $index Index
*
* @return CharClass
*
* @throws \REBuilder\Exception\Generic
*/
public function addChildAt(AbstractPattern $child, $index = null)
{
if (!$child->canBeAddedToCharClass()) {
throw new \REBuilder\Exception\Generic($this->_getClassName($child) . " cannot be added to character classes");
}
return parent::addChildAt($child, $index);
}