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<?php
/*
* This file is part of the Prophecy.
* (c) Konstantin Kudryashov <ever.zet@gmail.com>
* Marcello Duarte <marcello.duarte@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Prophecy\Doubler;
use Prophecy\Exception\Doubler\DoubleException;
use Prophecy\Exception\Doubler\ClassNotFoundException;
use Prophecy\Exception\Doubler\InterfaceNotFoundException;
use ReflectionClass;
/**
* Lazy double.
* Gives simple interface to describe double before creating it.
*
* @author Konstantin Kudryashov <ever.zet@gmail.com>
*/
class LazyDouble
{
private $doubler;
private $class;
private $interfaces = array();
private $arguments = null;
private $double;
/**
* Initializes lazy double.
*
* @param Doubler $doubler
*/
public function __construct(Doubler $doubler)
{
$this->doubler = $doubler;
}
/**
* Tells doubler to use specific class as parent one for double.
*
* @param string|ReflectionClass $class
*
* @throws \Prophecy\Exception\Doubler\ClassNotFoundException
* @throws \Prophecy\Exception\Doubler\DoubleException
*/
public function setParentClass($class)
{
if (null !== $this->double) {
throw new DoubleException('Can not extend class with already instantiated double.');
}
if (!$class instanceof ReflectionClass) {
if (!class_exists($class)) {
throw new ClassNotFoundException(sprintf('Class %s not found.', $class), $class);
}
$class = new ReflectionClass($class);
}
$this->class = $class;
}
/**
* Tells doubler to implement specific interface with double.
*
* @param string|ReflectionClass $interface
*
* @throws \Prophecy\Exception\Doubler\InterfaceNotFoundException
* @throws \Prophecy\Exception\Doubler\DoubleException
*/
public function addInterface($interface)
{
if (null !== $this->double) {
throw new DoubleException(
'Can not implement interface with already instantiated double.'
);
}
if (!$interface instanceof ReflectionClass) {
if (!interface_exists($interface)) {
throw new InterfaceNotFoundException(
sprintf('Interface %s not found.', $interface),
$interface
);
}
$interface = new ReflectionClass($interface);
}
$this->interfaces[] = $interface;
}
/**
* Sets constructor arguments.
*
* @param array $arguments
*/
public function setArguments(array $arguments = null)
{
$this->arguments = $arguments;
}
/**
* Creates double instance or returns already created one.
*
* @return DoubleInterface
*/
public function getInstance()
{
if (null === $this->double) {
if (null !== $this->arguments) {
return $this->double = $this->doubler->double(
$this->class, $this->interfaces, $this->arguments
);
}
$this->double = $this->doubler->double($this->class, $this->interfaces);
}
return $this->double;
}
}