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<?php
namespace Codeception\Util;
use ReflectionException;
use ReflectionParameter;
use ReflectionProperty;
use ReflectionMethod;
/**
* This class contains helper methods to help with common Reflection tasks.
*/
class ReflectionHelper
{
/**
* Read a private property of an object.
*
* @param object $object
* @param string $property
* @param string|null $class
* @return mixed
* @throws ReflectionException
*/
public static function readPrivateProperty($object, $property, $class = null)
{
if (is_null($class)) {
$class = $object;
}
$property = new ReflectionProperty($class, $property);
$property->setAccessible(true);
return $property->getValue($object);
}
/**
* Invoke a private method of an object.
*
* @param object $object
* @param string $method
* @param array $args
* @param string|null $class
* @return mixed
* @throws ReflectionException
*/
public static function invokePrivateMethod($object, $method, $args = [], $class = null)
{
if (is_null($class)) {
$class = $object;
}
$method = new ReflectionMethod($class, $method);
$method->setAccessible(true);
return $method->invokeArgs($object, $args);
}
/**
* Returns class name without namespace
*
* (does not use reflection actually)
*
* @param $object
* @return mixed
*/
public static function getClassShortName($object)
{
$path = explode('\\', get_class($object));
return array_pop($path);
}
/**
* Adapted from https://github.com/Behat/Behat/pull/1313
*
* @param ReflectionParameter $parameter
* @return string|null
*/
public static function getClassFromParameter(ReflectionParameter $parameter)
{
if (PHP_VERSION_ID < 70100) {
$class = $parameter->getClass();
if ($class !== null) {
return $class->name;
}
return $class;
}
$type = $parameter->getType();
if ($type === null || $type->isBuiltin()) {
return null;
}
$typeString = $type->getName();
if ($typeString === 'self') {
return $parameter->getDeclaringClass()->getName();
} elseif ($typeString === 'parent') {
return $parameter->getDeclaringClass()->getParentClass()->getName();
}
return $typeString;
}
/**
* Infer default parameter from the reflection object and format it as PHP (code) string
*
* @param ReflectionParameter $param
*
* @return string
*/
public static function getDefaultValue(ReflectionParameter $param)
{
if ($param->isDefaultValueAvailable()) {
if (method_exists($param, 'isDefaultValueConstant') && $param->isDefaultValueConstant()) {
$constName = $param->getDefaultValueConstantName();
if (false !== strpos($constName, '::')) {
list($class, $const) = explode('::', $constName);
if (in_array($class, ['self', 'static'])) {
$constName = '\\' . $param->getDeclaringClass()->getName() . '::' . $const;
} elseif (substr($class, 0, 1) !== '\\') {
$constName = '\\' . $constName;
}
}
return $constName;
}
return self::phpEncodeValue($param->getDefaultValue());
}
// Default to 'null' for PHP versions < 7.1.
if (PHP_VERSION_ID < 70100) {
return 'null';
}
$type = $param->getType();
// Default to 'null' if explicitly allowed or there is no specific type hint.
if (!$type || $type->allowsNull() || !$type->isBuiltin()) {
return 'null';
}
// Default value should match the parameter type if 'null' is NOT allowed.
switch ($type->getName()) {
case 'string':
return "''";
case 'array':
return '[]';
case 'boolean':
return 'false';
case 'int':
case 'integer':
case 'float':
case 'double':
case 'number':
case 'numeric':
return '0';
default:
return 'null';
}
}
/**
* PHP encode value
*
* @param mixed $value
*
* @return string
*/
public static function phpEncodeValue($value)
{
if (is_array($value)) {
return self::phpEncodeArray($value);
}
if (is_string($value)) {
return json_encode($value);
}
return var_export($value, true);
}
/**
* Recursively PHP encode an array
*
* @param array $array
*
* @return string
*/
public static function phpEncodeArray(array $array)
{
$isPlainArray = function (array $value) {
return ((count($value) === 0)
|| (
(array_keys($value) === range(0, count($value) - 1))
&& (0 === count(array_filter(array_keys($value), 'is_string'))))
);
};
if ($isPlainArray($array)) {
return '[' . implode(', ', array_map([self::class, 'phpEncodeValue'], $array)) . ']';
}
$values = array_map(
function ($key) use ($array) {
return self::phpEncodeValue($key) . ' => ' . self::phpEncodeValue($array[$key]);
},
array_keys($array)
);
return '[' . implode(', ', $values) . ']';
}
}