*/ private array $expressions = []; /** * @param Expression[] $expressions * * @throws RuntimeException */ public function __construct(private readonly string $type, array $expressions) { foreach ($expressions as $expr) { if ($expr instanceof Value) { throw new RuntimeException('Values are not supported expressions as children of and/or expressions.'); } if (! ($expr instanceof Expression)) { throw new RuntimeException('No expression given to CompositeExpression.'); } $this->expressions[] = $expr; } if ($type === self::TYPE_NOT && count($this->expressions) !== 1) { throw new RuntimeException('Not expression only allows one expression as child.'); } } /** * Returns the list of expressions nested in this composite. * * @return list */ public function getExpressionList() { return $this->expressions; } /** @return string */ public function getType() { return $this->type; } /** * {@inheritDoc} */ public function visit(ExpressionVisitor $visitor) { return $visitor->walkCompositeExpression($this); } }