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<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2023 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy;
/**
* Helpers for bypassing visibility restrictions, mostly used in code generated
* by the `sudo` command.
*/
class Sudo
{
/**
* Fetch a property of an object, bypassing visibility restrictions.
*
* @param object $object
* @param string $property property name
*
* @return mixed Value of $object->property
*/
public static function fetchProperty($object, string $property)
{
$prop = self::getProperty(new \ReflectionObject($object), $property);
return $prop->getValue($object);
}
/**
* Assign the value of a property of an object, bypassing visibility restrictions.
*
* @param object $object
* @param string $property property name
* @param mixed $value
*
* @return mixed Value of $object->property
*/
public static function assignProperty($object, string $property, $value)
{
$prop = self::getProperty(new \ReflectionObject($object), $property);
$prop->setValue($object, $value);
return $value;
}
/**
* Call a method on an object, bypassing visibility restrictions.
*
* @param object $object
* @param string $method method name
* @param mixed $args...
*
* @return mixed
*/
public static function callMethod($object, string $method, ...$args)
{
$refl = new \ReflectionObject($object);
$reflMethod = $refl->getMethod($method);
$reflMethod->setAccessible(true);
return $reflMethod->invokeArgs($object, $args);
}
/**
* Fetch a property of a class, bypassing visibility restrictions.
*
* @param string|object $class class name or instance
* @param string $property property name
*
* @return mixed Value of $class::$property
*/
public static function fetchStaticProperty($class, string $property)
{
$prop = self::getProperty(new \ReflectionClass($class), $property);
$prop->setAccessible(true);
return $prop->getValue();
}
/**
* Assign the value of a static property of a class, bypassing visibility restrictions.
*
* @param string|object $class class name or instance
* @param string $property property name
* @param mixed $value
*
* @return mixed Value of $class::$property
*/
public static function assignStaticProperty($class, string $property, $value)
{
$prop = self::getProperty(new \ReflectionClass($class), $property);
$prop->setValue($value);
return $value;
}
/**
* Call a static method on a class, bypassing visibility restrictions.
*
* @param string|object $class class name or instance
* @param string $method method name
* @param mixed $args...
*
* @return mixed
*/
public static function callStatic($class, string $method, ...$args)
{
$refl = new \ReflectionClass($class);
$reflMethod = $refl->getMethod($method);
$reflMethod->setAccessible(true);
return $reflMethod->invokeArgs(null, $args);
}
/**
* Fetch a class constant, bypassing visibility restrictions.
*
* @param string|object $class class name or instance
* @param string $const constant name
*
* @return mixed
*/
public static function fetchClassConst($class, string $const)
{
$refl = new \ReflectionClass($class);
do {
if ($refl->hasConstant($const)) {
return $refl->getConstant($const);
}
$refl = $refl->getParentClass();
} while ($refl !== false);
return false;
}
/**
* Construct an instance of a class, bypassing private constructors.
*
* @param string $class class name
* @param mixed $args...
*/
public static function newInstance(string $class, ...$args)
{
$refl = new \ReflectionClass($class);
$instance = $refl->newInstanceWithoutConstructor();
$constructor = $refl->getConstructor();
$constructor->setAccessible(true);
$constructor->invokeArgs($instance, $args);
return $instance;
}
/**
* Get a ReflectionProperty from an object (or its parent classes).
*
* @throws \ReflectionException if neither the object nor any of its parents has this property
*
* @param \ReflectionClass $refl
* @param string $property property name
*
* @return \ReflectionProperty
*/
private static function getProperty(\ReflectionClass $refl, string $property): \ReflectionProperty
{
$firstException = null;
do {
try {
$prop = $refl->getProperty($property);
$prop->setAccessible(true);
return $prop;
} catch (\ReflectionException $e) {
if ($firstException === null) {
$firstException = $e;
}
$refl = $refl->getParentClass();
}
} while ($refl !== false);
throw $firstException;
}
}
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