/**
* Дублировать сыновей
*
* \param [in] value количество раз для дублирования сыновей
*/
public function duplicate_child($value)
{
$toDup = array();
for ($i = 0; $i < count($this->childrens); $i++) {
if (get_class($this->childrens[$i]) == 'qtype_correctwriting_operand') {
if ($this->childrens[$i]->number === null || is_double($this->childrens[$i]->number)) {
array_push($toDup, $this->childrens[$i]);
}
}
if (get_class($this->childrens[$i]) != 'qtype_correctwriting_operand') {
array_push($toDup, $this->childrens[$i]);
}
}
// создать сын для добавления
$childToAdd;
if (count($toDup) == 1) {
$childToAdd = $toDup[0];
} else {
$childToAdd = new qtype_correctwriting_multi_operator();
$childToAdd->childrens = $toDup;
$childToAdd->calculate_tree_in_string();
}
// преобразовать в qtype_correctwriting_plus_operator
$tmp = new qtype_correctwriting_plus_operator();
for ($i = 0; $i < abs($value); $i++) {
array_push($tmp->childrens, clone $childToAdd);
}
$tmp->calculate_tree_in_string();
// добавление знак
if ($value < 0) {
$t = new qtype_correctwriting_unary_minus_operator();
$t->children = $tmp;
$t->calculate_tree_in_string();
$this->ptonewchild = $t;
} else {
$this->ptonewchild = $tmp;
}
}
public function convert($parent)
{
$this->convert_each_childrens();
$tmp = new qtype_correctwriting_multi_operator();
array_push($tmp->childrens, clone $this->left);
array_push($tmp->childrens, $this->right);
$tmp->calculate_tree_in_string();
$newass = new qtype_correctwriting_assign_operator();
$newass->left = $this->left;
$newass->right = $tmp;
$newass->calculate_tree_in_string();
$this->ptonewchild = $newass;
}
