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symfony/src/Symfony/Component/PropertyAccess/PropertyAccessor.php
Nicolas Grekas 1ff12d92fd Merge branch '2.3' into 2.7
* 2.3:
  [PropertyAccess] ->getValue() should be read-only
  [Config] Fix XmlUtilsTest namespace
  [Routing] add query param if value is different from default

Conflicts:
	src/Symfony/Component/PropertyAccess/Tests/PropertyAccessorTest.php
2016-04-20 20:45:26 +02:00

821 lines
31 KiB
PHP

<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\PropertyAccess;
use Symfony\Component\PropertyAccess\Exception\AccessException;
use Symfony\Component\PropertyAccess\Exception\InvalidArgumentException;
use Symfony\Component\PropertyAccess\Exception\NoSuchPropertyException;
use Symfony\Component\PropertyAccess\Exception\NoSuchIndexException;
use Symfony\Component\PropertyAccess\Exception\UnexpectedTypeException;
/**
* Default implementation of {@link PropertyAccessorInterface}.
*
* @author Bernhard Schussek <bschussek@gmail.com>
* @author Kévin Dunglas <dunglas@gmail.com>
* @author Nicolas Grekas <p@tchwork.com>
*/
class PropertyAccessor implements PropertyAccessorInterface
{
/**
* @internal
*/
const VALUE = 0;
/**
* @internal
*/
const REF = 1;
/**
* @internal
*/
const IS_REF_CHAINED = 2;
/**
* @internal
*/
const ACCESS_HAS_PROPERTY = 0;
/**
* @internal
*/
const ACCESS_TYPE = 1;
/**
* @internal
*/
const ACCESS_NAME = 2;
/**
* @internal
*/
const ACCESS_REF = 3;
/**
* @internal
*/
const ACCESS_ADDER = 4;
/**
* @internal
*/
const ACCESS_REMOVER = 5;
/**
* @internal
*/
const ACCESS_TYPE_METHOD = 0;
/**
* @internal
*/
const ACCESS_TYPE_PROPERTY = 1;
/**
* @internal
*/
const ACCESS_TYPE_MAGIC = 2;
/**
* @internal
*/
const ACCESS_TYPE_ADDER_AND_REMOVER = 3;
/**
* @internal
*/
const ACCESS_TYPE_NOT_FOUND = 4;
/**
* @var bool
*/
private $magicCall;
/**
* @var bool
*/
private $ignoreInvalidIndices;
/**
* @var array
*/
private $readPropertyCache = array();
/**
* @var array
*/
private $writePropertyCache = array();
private static $previousErrorHandler = false;
private static $errorHandler = array(__CLASS__, 'handleError');
private static $resultProto = array(self::VALUE => null);
/**
* Should not be used by application code. Use
* {@link PropertyAccess::createPropertyAccessor()} instead.
*
* @param bool $magicCall
* @param bool $throwExceptionOnInvalidIndex
*/
public function __construct($magicCall = false, $throwExceptionOnInvalidIndex = false)
{
$this->magicCall = $magicCall;
$this->ignoreInvalidIndices = !$throwExceptionOnInvalidIndex;
}
/**
* {@inheritdoc}
*/
public function getValue($objectOrArray, $propertyPath)
{
if (!$propertyPath instanceof PropertyPathInterface) {
$propertyPath = new PropertyPath($propertyPath);
}
$zval = array(
self::VALUE => $objectOrArray,
);
$propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength(), $this->ignoreInvalidIndices);
return $propertyValues[count($propertyValues) - 1][self::VALUE];
}
/**
* {@inheritdoc}
*/
public function setValue(&$objectOrArray, $propertyPath, $value)
{
if (!$propertyPath instanceof PropertyPathInterface) {
$propertyPath = new PropertyPath($propertyPath);
}
$zval = array(
self::VALUE => $objectOrArray,
self::REF => &$objectOrArray,
);
$propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength() - 1);
$overwrite = true;
try {
if (PHP_VERSION_ID < 70000 && false === self::$previousErrorHandler) {
self::$previousErrorHandler = set_error_handler(self::$errorHandler);
}
for ($i = count($propertyValues) - 1; 0 <= $i; --$i) {
$zval = $propertyValues[$i];
unset($propertyValues[$i]);
// You only need set value for current element if:
// 1. it's the parent of the last index element
// OR
// 2. its child is not passed by reference
//
// This may avoid uncessary value setting process for array elements.
// For example:
// '[a][b][c]' => 'old-value'
// If you want to change its value to 'new-value',
// you only need set value for '[a][b][c]' and it's safe to ignore '[a][b]' and '[a]'
//
if ($overwrite) {
$property = $propertyPath->getElement($i);
if ($propertyPath->isIndex($i)) {
if ($overwrite = !isset($zval[self::REF])) {
$ref = &$zval[self::REF];
$ref = $zval[self::VALUE];
}
$this->writeIndex($zval, $property, $value);
if ($overwrite) {
$zval[self::VALUE] = $zval[self::REF];
}
} else {
$this->writeProperty($zval, $property, $value);
}
// if current element is an object
// OR
// if current element's reference chain is not broken - current element
// as well as all its ancients in the property path are all passed by reference,
// then there is no need to continue the value setting process
if (is_object($zval[self::VALUE]) || isset($zval[self::IS_REF_CHAINED])) {
break;
}
}
$value = $zval[self::VALUE];
}
} catch (\TypeError $e) {
try {
self::throwInvalidArgumentException($e->getMessage(), $e->getTrace(), 0);
} catch (InvalidArgumentException $e) {
}
} catch (\Exception $e) {
} catch (\Throwable $e) {
}
if (PHP_VERSION_ID < 70000 && false !== self::$previousErrorHandler) {
restore_error_handler();
self::$previousErrorHandler = false;
}
if (isset($e)) {
throw $e;
}
}
/**
* @internal
*/
public static function handleError($type, $message, $file, $line, $context)
{
if (E_RECOVERABLE_ERROR === $type) {
self::throwInvalidArgumentException($message, debug_backtrace(false), 1);
}
return null !== self::$previousErrorHandler && false !== call_user_func(self::$previousErrorHandler, $type, $message, $file, $line, $context);
}
private static function throwInvalidArgumentException($message, $trace, $i)
{
if (isset($trace[$i]['file']) && __FILE__ === $trace[$i]['file']) {
$pos = strpos($message, $delim = 'must be of the type ') ?: strpos($message, $delim = 'must be an instance of ');
$pos += strlen($delim);
$type = $trace[$i]['args'][0];
$type = is_object($type) ? get_class($type) : gettype($type);
throw new InvalidArgumentException(sprintf('Expected argument of type "%s", "%s" given', substr($message, $pos, strpos($message, ',', $pos) - $pos), $type));
}
}
/**
* {@inheritdoc}
*/
public function isReadable($objectOrArray, $propertyPath)
{
if (!$propertyPath instanceof PropertyPathInterface) {
$propertyPath = new PropertyPath($propertyPath);
}
try {
$zval = array(
self::VALUE => $objectOrArray,
);
$this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength(), $this->ignoreInvalidIndices);
return true;
} catch (AccessException $e) {
return false;
} catch (UnexpectedTypeException $e) {
return false;
}
}
/**
* {@inheritdoc}
*/
public function isWritable($objectOrArray, $propertyPath)
{
if (!$propertyPath instanceof PropertyPathInterface) {
$propertyPath = new PropertyPath($propertyPath);
}
try {
$zval = array(
self::VALUE => $objectOrArray,
);
$propertyValues = $this->readPropertiesUntil($zval, $propertyPath, $propertyPath->getLength() - 1);
for ($i = count($propertyValues) - 1; 0 <= $i; --$i) {
$zval = $propertyValues[$i];
unset($propertyValues[$i]);
if ($propertyPath->isIndex($i)) {
if (!$zval[self::VALUE] instanceof \ArrayAccess && !is_array($zval[self::VALUE])) {
return false;
}
} else {
if (!$this->isPropertyWritable($zval[self::VALUE], $propertyPath->getElement($i))) {
return false;
}
}
if (is_object($zval[self::VALUE])) {
return true;
}
}
return true;
} catch (AccessException $e) {
return false;
} catch (UnexpectedTypeException $e) {
return false;
}
}
/**
* Reads the path from an object up to a given path index.
*
* @param array $zval The array containing the object or array to read from
* @param PropertyPathInterface $propertyPath The property path to read
* @param int $lastIndex The index up to which should be read
* @param bool $ignoreInvalidIndices Whether to ignore invalid indices or throw an exception
*
* @return array The values read in the path.
*
* @throws UnexpectedTypeException If a value within the path is neither object nor array.
* @throws NoSuchIndexException If a non-existing index is accessed
*/
private function readPropertiesUntil($zval, PropertyPathInterface $propertyPath, $lastIndex, $ignoreInvalidIndices = true)
{
if (!is_object($zval[self::VALUE]) && !is_array($zval[self::VALUE])) {
throw new UnexpectedTypeException($zval[self::VALUE], $propertyPath, 0);
}
// Add the root object to the list
$propertyValues = array($zval);
for ($i = 0; $i < $lastIndex; ++$i) {
$property = $propertyPath->getElement($i);
$isIndex = $propertyPath->isIndex($i);
if ($isIndex) {
// Create missing nested arrays on demand
if (($zval[self::VALUE] instanceof \ArrayAccess && !$zval[self::VALUE]->offsetExists($property)) ||
(is_array($zval[self::VALUE]) && !isset($zval[self::VALUE][$property]) && !array_key_exists($property, $zval[self::VALUE]))
) {
if (!$ignoreInvalidIndices) {
if (!is_array($zval[self::VALUE])) {
if (!$zval[self::VALUE] instanceof \Traversable) {
throw new NoSuchIndexException(sprintf(
'Cannot read index "%s" while trying to traverse path "%s".',
$property,
(string) $propertyPath
));
}
$zval[self::VALUE] = iterator_to_array($zval[self::VALUE]);
}
throw new NoSuchIndexException(sprintf(
'Cannot read index "%s" while trying to traverse path "%s". Available indices are "%s".',
$property,
(string) $propertyPath,
print_r(array_keys($zval[self::VALUE]), true)
));
}
if ($i + 1 < $propertyPath->getLength()) {
if (isset($zval[self::REF])) {
$zval[self::VALUE][$property] = array();
$zval[self::REF] = $zval[self::VALUE];
} else {
$zval[self::VALUE] = array($property => array());
}
}
}
$zval = $this->readIndex($zval, $property);
} else {
$zval = $this->readProperty($zval, $property);
}
// the final value of the path must not be validated
if ($i + 1 < $propertyPath->getLength() && !is_object($zval[self::VALUE]) && !is_array($zval[self::VALUE])) {
throw new UnexpectedTypeException($zval[self::VALUE], $propertyPath, $i + 1);
}
if (isset($zval[self::REF]) && (0 === $i || isset($propertyValues[$i - 1][self::IS_REF_CHAINED]))) {
// Set the IS_REF_CHAINED flag to true if:
// current property is passed by reference and
// it is the first element in the property path or
// the IS_REF_CHAINED flag of its parent element is true
// Basically, this flag is true only when the reference chain from the top element to current element is not broken
$zval[self::IS_REF_CHAINED] = true;
}
$propertyValues[] = $zval;
}
return $propertyValues;
}
/**
* Reads a key from an array-like structure.
*
* @param array $zval The array containing the array or \ArrayAccess object to read from
* @param string|int $index The key to read
*
* @return array The array containing the value of the key
*
* @throws NoSuchIndexException If the array does not implement \ArrayAccess or it is not an array
*/
private function readIndex($zval, $index)
{
if (!$zval[self::VALUE] instanceof \ArrayAccess && !is_array($zval[self::VALUE])) {
throw new NoSuchIndexException(sprintf('Cannot read index "%s" from object of type "%s" because it doesn\'t implement \ArrayAccess.', $index, get_class($zval[self::VALUE])));
}
$result = self::$resultProto;
if (isset($zval[self::VALUE][$index])) {
$result[self::VALUE] = $zval[self::VALUE][$index];
if (!isset($zval[self::REF])) {
// Save creating references when doing read-only lookups
} elseif (is_array($zval[self::VALUE])) {
$result[self::REF] = &$zval[self::REF][$index];
} elseif (is_object($result[self::VALUE])) {
$result[self::REF] = $result[self::VALUE];
}
}
return $result;
}
/**
* Reads the a property from an object.
*
* @param array $zval The array containing the object to read from
* @param string $property The property to read.
*
* @return array The array containing the value of the property
*
* @throws NoSuchPropertyException If the property does not exist or is not public.
*/
private function readProperty($zval, $property)
{
if (!is_object($zval[self::VALUE])) {
throw new NoSuchPropertyException(sprintf('Cannot read property "%s" from an array. Maybe you intended to write the property path as "[%s]" instead.', $property, $property));
}
$result = self::$resultProto;
$object = $zval[self::VALUE];
$access = $this->getReadAccessInfo(get_class($object), $property);
if (self::ACCESS_TYPE_METHOD === $access[self::ACCESS_TYPE]) {
$result[self::VALUE] = $object->{$access[self::ACCESS_NAME]}();
} elseif (self::ACCESS_TYPE_PROPERTY === $access[self::ACCESS_TYPE]) {
$result[self::VALUE] = $object->{$access[self::ACCESS_NAME]};
if ($access[self::ACCESS_REF] && isset($zval[self::REF])) {
$result[self::REF] = &$object->{$access[self::ACCESS_NAME]};
}
} elseif (!$access[self::ACCESS_HAS_PROPERTY] && property_exists($object, $property)) {
// Needed to support \stdClass instances. We need to explicitly
// exclude $access[self::ACCESS_HAS_PROPERTY], otherwise if
// a *protected* property was found on the class, property_exists()
// returns true, consequently the following line will result in a
// fatal error.
$result[self::VALUE] = $object->$property;
if (isset($zval[self::REF])) {
$result[self::REF] = &$object->$property;
}
} elseif (self::ACCESS_TYPE_MAGIC === $access[self::ACCESS_TYPE]) {
// we call the getter and hope the __call do the job
$result[self::VALUE] = $object->{$access[self::ACCESS_NAME]}();
} else {
throw new NoSuchPropertyException($access[self::ACCESS_NAME]);
}
// Objects are always passed around by reference
if (isset($zval[self::REF]) && is_object($result[self::VALUE])) {
$result[self::REF] = $result[self::VALUE];
}
return $result;
}
/**
* Guesses how to read the property value.
*
* @param string $class
* @param string $property
*
* @return array
*/
private function getReadAccessInfo($class, $property)
{
$key = $class.'::'.$property;
if (isset($this->readPropertyCache[$key])) {
$access = $this->readPropertyCache[$key];
} else {
$access = array();
$reflClass = new \ReflectionClass($class);
$access[self::ACCESS_HAS_PROPERTY] = $reflClass->hasProperty($property);
$camelProp = $this->camelize($property);
$getter = 'get'.$camelProp;
$getsetter = lcfirst($camelProp); // jQuery style, e.g. read: last(), write: last($item)
$isser = 'is'.$camelProp;
$hasser = 'has'.$camelProp;
if ($reflClass->hasMethod($getter) && $reflClass->getMethod($getter)->isPublic()) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_METHOD;
$access[self::ACCESS_NAME] = $getter;
} elseif ($reflClass->hasMethod($getsetter) && $reflClass->getMethod($getsetter)->isPublic()) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_METHOD;
$access[self::ACCESS_NAME] = $getsetter;
} elseif ($reflClass->hasMethod($isser) && $reflClass->getMethod($isser)->isPublic()) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_METHOD;
$access[self::ACCESS_NAME] = $isser;
} elseif ($reflClass->hasMethod($hasser) && $reflClass->getMethod($hasser)->isPublic()) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_METHOD;
$access[self::ACCESS_NAME] = $hasser;
} elseif ($reflClass->hasMethod('__get') && $reflClass->getMethod('__get')->isPublic()) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_PROPERTY;
$access[self::ACCESS_NAME] = $property;
$access[self::ACCESS_REF] = false;
} elseif ($access[self::ACCESS_HAS_PROPERTY] && $reflClass->getProperty($property)->isPublic()) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_PROPERTY;
$access[self::ACCESS_NAME] = $property;
$access[self::ACCESS_REF] = true;
} elseif ($this->magicCall && $reflClass->hasMethod('__call') && $reflClass->getMethod('__call')->isPublic()) {
// we call the getter and hope the __call do the job
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_MAGIC;
$access[self::ACCESS_NAME] = $getter;
} else {
$methods = array($getter, $getsetter, $isser, $hasser, '__get');
if ($this->magicCall) {
$methods[] = '__call';
}
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_NOT_FOUND;
$access[self::ACCESS_NAME] = sprintf(
'Neither the property "%s" nor one of the methods "%s()" '.
'exist and have public access in class "%s".',
$property,
implode('()", "', $methods),
$reflClass->name
);
}
$this->readPropertyCache[$key] = $access;
}
return $access;
}
/**
* Sets the value of an index in a given array-accessible value.
*
* @param array $zval The array containing the array or \ArrayAccess object to write to
* @param string|int $index The index to write at
* @param mixed $value The value to write
*
* @throws NoSuchIndexException If the array does not implement \ArrayAccess or it is not an array
*/
private function writeIndex($zval, $index, $value)
{
if (!$zval[self::VALUE] instanceof \ArrayAccess && !is_array($zval[self::VALUE])) {
throw new NoSuchIndexException(sprintf('Cannot modify index "%s" in object of type "%s" because it doesn\'t implement \ArrayAccess', $index, get_class($zval[self::VALUE])));
}
$zval[self::REF][$index] = $value;
}
/**
* Sets the value of a property in the given object.
*
* @param array $zval The array containing the object to write to
* @param string $property The property to write
* @param mixed $value The value to write
*
* @throws NoSuchPropertyException If the property does not exist or is not public.
*/
private function writeProperty($zval, $property, $value)
{
if (!is_object($zval[self::VALUE])) {
throw new NoSuchPropertyException(sprintf('Cannot write property "%s" to an array. Maybe you should write the property path as "[%s]" instead?', $property, $property));
}
$object = $zval[self::VALUE];
$access = $this->getWriteAccessInfo(get_class($object), $property, $value);
if (self::ACCESS_TYPE_METHOD === $access[self::ACCESS_TYPE]) {
$object->{$access[self::ACCESS_NAME]}($value);
} elseif (self::ACCESS_TYPE_PROPERTY === $access[self::ACCESS_TYPE]) {
$object->{$access[self::ACCESS_NAME]} = $value;
} elseif (self::ACCESS_TYPE_ADDER_AND_REMOVER === $access[self::ACCESS_TYPE]) {
$this->writeCollection($zval, $property, $value, $access[self::ACCESS_ADDER], $access[self::ACCESS_REMOVER]);
} elseif (!$access[self::ACCESS_HAS_PROPERTY] && property_exists($object, $property)) {
// Needed to support \stdClass instances. We need to explicitly
// exclude $access[self::ACCESS_HAS_PROPERTY], otherwise if
// a *protected* property was found on the class, property_exists()
// returns true, consequently the following line will result in a
// fatal error.
$object->$property = $value;
} elseif (self::ACCESS_TYPE_MAGIC === $access[self::ACCESS_TYPE]) {
$object->{$access[self::ACCESS_NAME]}($value);
} else {
throw new NoSuchPropertyException($access[self::ACCESS_NAME]);
}
}
/**
* Adjusts a collection-valued property by calling add*() and remove*() methods.
*
* @param array $zval The array containing the object to write to
* @param string $property The property to write
* @param array|\Traversable $collection The collection to write
* @param string $addMethod The add*() method
* @param string $removeMethod The remove*() method
*/
private function writeCollection($zval, $property, $collection, $addMethod, $removeMethod)
{
// At this point the add and remove methods have been found
$previousValue = $this->readProperty($zval, $property);
$previousValue = $previousValue[self::VALUE];
if ($previousValue instanceof \Traversable) {
$previousValue = iterator_to_array($previousValue);
}
if ($previousValue && is_array($previousValue)) {
if (is_object($collection)) {
$collection = iterator_to_array($collection);
}
foreach ($previousValue as $key => $item) {
if (!in_array($item, $collection, true)) {
unset($previousValue[$key]);
$zval[self::VALUE]->{$removeMethod}($item);
}
}
} else {
$previousValue = false;
}
foreach ($collection as $item) {
if (!$previousValue || !in_array($item, $previousValue, true)) {
$zval[self::VALUE]->{$addMethod}($item);
}
}
}
/**
* Guesses how to write the property value.
*
* @param string $class
* @param string $property
* @param mixed $value
*
* @return array
*/
private function getWriteAccessInfo($class, $property, $value)
{
$key = $class.'::'.$property;
if (isset($this->writePropertyCache[$key])) {
$access = $this->writePropertyCache[$key];
} else {
$access = array();
$reflClass = new \ReflectionClass($class);
$access[self::ACCESS_HAS_PROPERTY] = $reflClass->hasProperty($property);
$camelized = $this->camelize($property);
$singulars = (array) StringUtil::singularify($camelized);
if (is_array($value) || $value instanceof \Traversable) {
$methods = $this->findAdderAndRemover($reflClass, $singulars);
if (null !== $methods) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_ADDER_AND_REMOVER;
$access[self::ACCESS_ADDER] = $methods[0];
$access[self::ACCESS_REMOVER] = $methods[1];
}
}
if (!isset($access[self::ACCESS_TYPE])) {
$setter = 'set'.$camelized;
$getsetter = lcfirst($camelized); // jQuery style, e.g. read: last(), write: last($item)
if ($this->isMethodAccessible($reflClass, $setter, 1)) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_METHOD;
$access[self::ACCESS_NAME] = $setter;
} elseif ($this->isMethodAccessible($reflClass, $getsetter, 1)) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_METHOD;
$access[self::ACCESS_NAME] = $getsetter;
} elseif ($this->isMethodAccessible($reflClass, '__set', 2)) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_PROPERTY;
$access[self::ACCESS_NAME] = $property;
} elseif ($access[self::ACCESS_HAS_PROPERTY] && $reflClass->getProperty($property)->isPublic()) {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_PROPERTY;
$access[self::ACCESS_NAME] = $property;
} elseif ($this->magicCall && $this->isMethodAccessible($reflClass, '__call', 2)) {
// we call the getter and hope the __call do the job
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_MAGIC;
$access[self::ACCESS_NAME] = $setter;
} else {
$access[self::ACCESS_TYPE] = self::ACCESS_TYPE_NOT_FOUND;
$access[self::ACCESS_NAME] = sprintf(
'Neither the property "%s" nor one of the methods %s"%s()", "%s()", '.
'"__set()" or "__call()" exist and have public access in class "%s".',
$property,
implode('', array_map(function ($singular) {
return '"add'.$singular.'()"/"remove'.$singular.'()", ';
}, $singulars)),
$setter,
$getsetter,
$reflClass->name
);
}
}
$this->writePropertyCache[$key] = $access;
}
return $access;
}
/**
* Returns whether a property is writable in the given object.
*
* @param object $object The object to write to
* @param string $property The property to write
*
* @return bool Whether the property is writable
*/
private function isPropertyWritable($object, $property)
{
if (!is_object($object)) {
return false;
}
$access = $this->getWriteAccessInfo(get_class($object), $property, array());
return self::ACCESS_TYPE_METHOD === $access[self::ACCESS_TYPE]
|| self::ACCESS_TYPE_PROPERTY === $access[self::ACCESS_TYPE]
|| self::ACCESS_TYPE_ADDER_AND_REMOVER === $access[self::ACCESS_TYPE]
|| (!$access[self::ACCESS_HAS_PROPERTY] && property_exists($object, $property))
|| self::ACCESS_TYPE_MAGIC === $access[self::ACCESS_TYPE];
}
/**
* Camelizes a given string.
*
* @param string $string Some string
*
* @return string The camelized version of the string
*/
private function camelize($string)
{
return str_replace(' ', '', ucwords(str_replace('_', ' ', $string)));
}
/**
* Searches for add and remove methods.
*
* @param \ReflectionClass $reflClass The reflection class for the given object
* @param array $singulars The singular form of the property name or null
*
* @return array|null An array containing the adder and remover when found, null otherwise
*/
private function findAdderAndRemover(\ReflectionClass $reflClass, array $singulars)
{
foreach ($singulars as $singular) {
$addMethod = 'add'.$singular;
$removeMethod = 'remove'.$singular;
$addMethodFound = $this->isMethodAccessible($reflClass, $addMethod, 1);
$removeMethodFound = $this->isMethodAccessible($reflClass, $removeMethod, 1);
if ($addMethodFound && $removeMethodFound) {
return array($addMethod, $removeMethod);
}
}
}
/**
* Returns whether a method is public and has the number of required parameters.
*
* @param \ReflectionClass $class The class of the method
* @param string $methodName The method name
* @param int $parameters The number of parameters
*
* @return bool Whether the method is public and has $parameters required parameters
*/
private function isMethodAccessible(\ReflectionClass $class, $methodName, $parameters)
{
if ($class->hasMethod($methodName)) {
$method = $class->getMethod($methodName);
if ($method->isPublic()
&& $method->getNumberOfRequiredParameters() <= $parameters
&& $method->getNumberOfParameters() >= $parameters) {
return true;
}
}
return false;
}
}