class Literal

abstract class Literal extends Node implements Expression {
    
    /**
     * Map of node properties
     * 
     * @var array 
     */
    protected $propertiesMap = array(
        "value" => false,
        "raw" => false,
    );
    
    /**
     * Node's value
     * 
     * @var mixed
     */
    protected $value;
    
    /**
     * Node's raw value
     * 
     * @var string
     */
    protected $raw;
    
    /**
     * Returns node's type
     * 
     * @return string
     */
    public function getType() {
        return "Literal";
    }
    
    /**
     * Returns node's value
     * 
     * @return mixed
     */
    public function getValue() {
        return $this->value;
    }
    
    /**
     * Sets node's value
     * 
     * @param mixed $value Value
     * 
     * @return $this
     */
    public abstract function setValue($value);
    
    /**
     * Return node's raw value
     * 
     * @return string
     */
    public function getRaw() {
        return $this->raw;
    }
    
    /**
     * Sets node's raw value
     * 
     * @param mixed $raw Raw value
     * 
     * @return $this
     */
    public function setRaw($raw) {
        return $this->setValue($raw);
    }

}