class ArgumentNode

class ArgumentNode {
    private $name;
    
    /**
     * @var mixed
     */
    private $default;
    
    /**
     * @var bool
     */
    private $optional = false;
    
    /**
     * @var bool
     */
    private $byReference = false;
    
    /**
     * @var bool
     */
    private $isVariadic = false;
    
    /** @var ArgumentTypeNode */
    private $typeNode;
    
    /**
     * @param string $name
     */
    public function __construct($name) {
        $this->name = $name;
        $this->typeNode = new ArgumentTypeNode();
    }
    
    /**
     * @return string
     */
    public function getName() {
        return $this->name;
    }
    
    /**
     * @return void
     */
    public function setTypeNode(ArgumentTypeNode $typeNode) {
        $this->typeNode = $typeNode;
    }
    public function getTypeNode() : ArgumentTypeNode {
        return $this->typeNode;
    }
    
    /**
     * @return bool
     */
    public function hasDefault() {
        return $this->isOptional() && !$this->isVariadic();
    }
    
    /**
     * @return mixed
     */
    public function getDefault() {
        return $this->default;
    }
    
    /**
     * @param mixed $default
     *
     * @return void
     */
    public function setDefault($default = null) {
        $this->optional = true;
        $this->default = $default;
    }
    
    /**
     * @return bool
     */
    public function isOptional() {
        return $this->optional;
    }
    
    /**
     * @param bool $byReference
     *
     * @return void
     */
    public function setAsPassedByReference($byReference = true) {
        $this->byReference = $byReference;
    }
    
    /**
     * @return bool
     */
    public function isPassedByReference() {
        return $this->byReference;
    }
    
    /**
     * @param bool $isVariadic
     *
     * @return void
     */
    public function setAsVariadic($isVariadic = true) {
        $this->isVariadic = $isVariadic;
    }
    
    /**
     * @return bool
     */
    public function isVariadic() {
        return $this->isVariadic;
    }
    
    /**
     * @deprecated use getArgumentTypeNode instead
     * @return string|null
     */
    public function getTypeHint() {
        $type = $this->typeNode
            ->getNonNullTypes() ? $this->typeNode
            ->getNonNullTypes()[0] : null;
        return $type ? ltrim($type, '\\') : null;
    }
    
    /**
     * @deprecated use setArgumentTypeNode instead
     * @param string|null $typeHint
     *
     * @return void
     */
    public function setTypeHint($typeHint = null) {
        $this->typeNode = $typeHint === null ? new ArgumentTypeNode() : new ArgumentTypeNode($typeHint);
    }
    
    /**
     * @deprecated use getArgumentTypeNode instead
     * @return bool
     */
    public function isNullable() {
        return $this->typeNode
            ->canUseNullShorthand();
    }
    
    /**
     * @deprecated use getArgumentTypeNode instead
     * @param bool $isNullable
     *
     * @return void
     */
    public function setAsNullable($isNullable = true) {
        $nonNullTypes = $this->typeNode
            ->getNonNullTypes();
        $this->typeNode = $isNullable ? new ArgumentTypeNode('null', ...$nonNullTypes) : new ArgumentTypeNode(...$nonNullTypes);
    }

}