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GenericDeserializationVisitor.php
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GenericDeserializationVisitor.php
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<?php
/*
* Copyright 2011 Johannes M. Schmitt <schmittjoh@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
namespace JMS\SerializerBundle\Serializer;
use JMS\SerializerBundle\Exception\RuntimeException;
use JMS\SerializerBundle\Serializer\Construction\ObjectConstructorInterface;
use JMS\SerializerBundle\Serializer\Naming\PropertyNamingStrategyInterface;
use JMS\SerializerBundle\Metadata\PropertyMetadata;
use JMS\SerializerBundle\Metadata\ClassMetadata;
/**
* Generic Deserialization Visitor.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
abstract class GenericDeserializationVisitor extends AbstractDeserializationVisitor
{
private $navigator;
private $result;
private $objectConstructor;
private $objectStack;
private $currentObject;
public function __construct(PropertyNamingStrategyInterface $namingStrategy, array $customHandlers, ObjectConstructorInterface $objectConstructor)
{
parent::__construct($namingStrategy, $customHandlers);
$this->objectConstructor = $objectConstructor;
}
public function setNavigator(GraphNavigator $navigator)
{
$this->navigator = $navigator;
$this->result = null;
$this->objectStack = new \SplStack;
}
public function getNavigator()
{
return $this->navigator;
}
public function prepare($data)
{
return $this->decode($data);
}
public function visitString($data, $type)
{
$data = (string) $data;
if (null === $this->result) {
$this->result = $data;
}
return $data;
}
public function visitBoolean($data, $type)
{
$data = (Boolean) $data;
if (null === $this->result) {
$this->result = $data;
}
return $data;
}
public function visitInteger($data, $type)
{
$data = (integer) $data;
if (null === $this->result) {
$this->result = $data;
}
return $data;
}
public function visitDouble($data, $type)
{
$data = (double) $data;
if (null === $this->result) {
$this->result = $data;
}
return $data;
}
public function visitArray($data, $type)
{
if (!is_array($data)) {
throw new RuntimeException(sprintf('Expected array, but got %s: %s', gettype($data), json_encode($data)));
}
// not specified of which type keys/values should be, just pass as is
if ('array' === $type) {
if (null === $this->result) {
$this->result = $data;
}
return $data;
}
// list
if (false === $pos = strpos($type, ',', 6)) {
$listType = substr($type, 6, -1);
$result = array();
if (null === $this->result) {
$this->result = &$result;
}
foreach ($data as $v) {
$result[] = $this->navigator->accept($v, $listType, $this);
}
return $result;
}
// map
$keyType = trim(substr($type, 6, $pos - 6));
$entryType = trim(substr($type, $pos+1, -1));
$result = array();
if (null === $this->result) {
$this->result = &$result;
}
foreach ($data as $k => $v) {
$result[$this->navigator->accept($k, $keyType, $this)] = $this->navigator->accept($v, $entryType, $this);
}
return $result;
}
public function visitTraversable($data, $type)
{
throw new RuntimeException('Traversable is not supported for deserialization.');
}
public function startVisitingObject(ClassMetadata $metadata, $data, $type)
{
$this->setCurrentObject($this->objectConstructor->construct($this, $metadata, $data, $type));
if (null === $this->result) {
$this->result = $this->currentObject;
}
}
public function visitProperty(PropertyMetadata $metadata, $data)
{
$name = $this->namingStrategy->translateName($metadata);
if (!isset($data[$name])) {
return;
}
if (!$metadata->type) {
throw new RuntimeException(sprintf('You must define a type for %s::$%s.', $metadata->reflection->getDeclaringClass()->getName(), $metadata->name));
}
$v = $this->navigator->accept($data[$name], $metadata->type, $this);
if (null === $v) {
return;
}
if (null === $metadata->setter) {
$metadata->reflection->setValue($this->currentObject, $v);
return;
}
$this->currentObject->{$metadata->setter}($v);
}
public function endVisitingObject(ClassMetadata $metadata, $data, $type)
{
$obj = $this->currentObject;
$this->revertCurrentObject();
return $obj;
}
public function visitPropertyUsingCustomHandler(PropertyMetadata $metadata, $object)
{
// TODO
return false;
}
public function getResult()
{
return $this->result;
}
public function setCurrentObject($object)
{
$this->objectStack->push($this->currentObject);
$this->currentObject = $object;
}
public function getCurrentObject()
{
return $this->currentObject;
}
public function revertCurrentObject()
{
return $this->currentObject = $this->objectStack->pop();
}
abstract protected function decode($str);
}