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<?php
namespace Coast;
use Coast\File;
use Coast\App;
use Coast\App\Executable;
use Coast\Request;
use Coast\Response;
use Closure;
use ArrayAccess;
class Lazy implements Executable, ArrayAccess
{
use Executable\Implementation;
protected $_source;
protected $_vars;
protected $_value;
protected $_isSubapp = false;
public function __construct($source, $vars = array())
{
if (!$source instanceof File && !$source instanceof Closure) {
throw new \Coast\Exception('Source must be an instance of Coast\File or Closure');
}
$this->_source = $source;
$this->_vars = $vars;
}
public function isSubapp($isSubapp = null)
{
if (func_num_args() > 0) {
$this->_isSubapp = $isSubapp;
return $this;
}
return $this->_isSubapp;
}
public function isInit()
{
return isset($this->_value);
}
public function init()
{
if (isset($this->_value)) {
return $this;
} else if ($this->_source instanceof File) {
$this->_value = \Coast\load($this->_source, $this->_vars);
} else if ($this->_source instanceof Closure) {
$this->_value = call_user_func($this->_source, $this->_vars);
}
if ($this->_value instanceof App) {
$this->_value->isSubapp($this->isSubapp());
}
return $this;
}
public function value()
{
$this->init();
return $this->_value;
}
public function execute(Request $req, Response $res)
{
$this->init();
if (!$this->_value instanceof Closure && !$this->_value instanceof Executable) {
throw new App\Exception("Object is not a closure or instance of Coast\App\Executable");
}
return $this->_value->execute($req, $res);
}
public function __invoke()
{
$this->init();
$args = func_get_args();
return call_user_func_array($this->_value, $args);
}
public function __call($method, $args)
{
$this->init();
return call_user_func_array([$this->_value, $method], $args);
}
public function __set($name, $value)
{
$this->init();
$this->_value->{$name} = $value;
}
public function __isset($name)
{
$this->init();
return isset($this->_value->{$name});
}
public function __get($name)
{
$this->init();
return $this->_value->{$name};
}
public function __unset($name)
{
$this->init();
unset($this->_value->{$name});
}
public function offsetSet($offset, $value)
{
$this->init();
$this->_value[$offset] = $value;
}
public function offsetExists($offset)
{
$this->init();
return isset($this->_value[$offset]);
}
public function offsetGet($offset)
{
$this->init();
return $this->_value[$offset];
}
public function offsetUnset($offset)
{
$this->init();
unset($this->_value[$offset]);
}
}