/**
* @param GroupNode $rootNode
*
* @return boolean
*/
protected function isValid(GroupNode $rootNode)
{
if ($rootNode->getType() !== GroupNode::TYPE_MIXED) {
return true;
}
$types = array_map(function ($node) {
if ($node instanceof GroupNode) {
return $node->getType();
}
return $node->isComputed() ? GroupNode::TYPE_COMPUTED : GroupNode::TYPE_UNCOMPUTED;
}, $rootNode->getChildren());
if (in_array(GroupNode::TYPE_MIXED, $types)) {
return false;
}
$computedTypes = ArrayUtil::dropWhile(function ($type) {
return $type === GroupNode::TYPE_UNCOMPUTED;
}, $types);
return !in_array(GroupNode::TYPE_UNCOMPUTED, $computedTypes);
}
/**
* @param GroupNode $gNode
*
* @return mixed Expr[] Where first item is uncomputed expr and 2nd one is computed
*/
protected function resolveGroupNode(GroupNode $gNode)
{
$uncomputedRestrictions = [];
$computedRestrictions = [];
foreach ($gNode->getChildren() as $node) {
if ($node instanceof Restriction) {
if ($node->isComputed()) {
$computedRestrictions[] = $node;
} else {
$uncomputedRestrictions[] = $node;
}
} else {
list($uncomputedExpr, $computedExpr) = $this->resolveGroupNode($node);
if ($uncomputedExpr) {
$uncomputedRestrictions[] = new Restriction($uncomputedExpr, $node->getCondition(), false);
}
if ($computedExpr) {
$computedRestrictions[] = new Restriction($computedExpr, $node->getCondition(), true);
}
}
}
return [$this->createExprFromRestrictions($uncomputedRestrictions), $this->createExprFromRestrictions($computedRestrictions)];
}