private function isPrimitive(Node $node) {
		return $node instanceof String_
			|| $node instanceof LNumber
			|| $node instanceof DNumber
			|| $this->isBool($node)
			|| $this->isNull($node);
	}
private function isPrimitive(Node $node) {
		return $node instanceof String_
			|| $node instanceof LNumber
			|| $node instanceof DNumber
			|| $this->isBool($node)
			|| $this->isNull($node);
	}
private function isPrimitive ( Node $ node ) { return $ node instanceof String_ || $ node instanceof LNumber || $ node instanceof DNumber || $ this -> isBool ( $ node ) || $ this -> isNull ( $ node ) ; }
Returns whether this node is a primitive value

@param Node $node
@return boolean
Returns whether this node is a primitive value