Viewing file:  HigherOrderWhenProxy.php (2.2 KB) -rw-r--r--
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<?php
namespace Illuminate\Support;
class HigherOrderWhenProxy
{
/**
* The target being conditionally operated on.
*
* @var mixed
*/
protected $target;
/**
* The condition for proxying.
*
* @var bool
*/
protected $condition;
/**
* Indicates whether the proxy has a condition.
*
* @var bool
*/
protected $hasCondition = false;
/**
* Determine whether the condition should be negated.
*
* @var bool
*/
protected $negateConditionOnCapture;
/**
* Create a new proxy instance.
*
* @param mixed $target
* @return void
*/
public function __construct($target)
{
$this->target = $target;
}
/**
* Set the condition on the proxy.
*
* @param bool $condition
* @return $this
*/
public function condition($condition)
{
[$this->condition, $this->hasCondition] = [$condition, true];
return $this;
}
/**
* Indicate that the condition should be negated.
*
* @return $this
*/
public function negateConditionOnCapture()
{
$this->negateConditionOnCapture = true;
return $this;
}
/**
* Proxy accessing an attribute onto the target.
*
* @param string $key
* @return mixed
*/
public function __get($key)
{
if (! $this->hasCondition) {
$condition = $this->target->{$key};
return $this->condition($this->negateConditionOnCapture ? ! $condition : $condition);
}
return $this->condition
? $this->target->{$key}
: $this->target;
}
/**
* Proxy a method call on the target.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function __call($method, $parameters)
{
if (! $this->hasCondition) {
$condition = $this->target->{$method}(...$parameters);
return $this->condition($this->negateConditionOnCapture ? ! $condition : $condition);
}
return $this->condition
? $this->target->{$method}(...$parameters)
: $this->target;
}
}
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