Mathielen\ImportEngine\Storage\Parser\JmsMetadataParser

Complexity

Total Complexity

24

Size/Duplication

Total Lines	182
Duplicated Lines	4.4 %

Coupling/Cohesion

Components	1
Dependencies	5

Test Coverage

Coverage

98.33%

Importance

Changes	4
Bugs	2	Features	0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	isPrimitive()	0	4	1
A	__construct()	0	7	1
A	parse()	0	7	1
C	doParse()	0	56	11
B	processDataType()	0	45	5
B	getNestedTypeInArray()	8	15	5

<?php
namespace Mathielen\ImportEngine\Storage\Parser;

use JMS\Serializer\Exclusion\GroupsExclusionStrategy;
use JMS\Serializer\SerializationContext;
use Metadata\MetadataFactoryInterface;
use JMS\Serializer\Metadata\PropertyMetadata;
use JMS\Serializer\Naming\PropertyNamingStrategyInterface;

/**
 * Uses the JMS metadata factory to extract input/output model information
 */
class JmsMetadataParser
{

    /**
     * @var \Metadata\MetadataFactoryInterface
     */
    private $factory;

    /**
     * @var PropertyNamingStrategyInterface
     */
    private $namingStrategy;

    /**
     * Constructor, requires JMS Metadata factory
     */
    public function __construct(
        MetadataFactoryInterface $factory,
        PropertyNamingStrategyInterface $namingStrategy
    ) {
        $this->factory = $factory;
        $this->namingStrategy = $namingStrategy;
    }

    /**
     * {@inheritdoc}
     */
    public function parse(array $input)
    {
        $className = $input['class'];
        $groups    = $input['groups'];

        return $this->doParse($className, array(), $groups);
    }

    /**
     * Recursively parse all metadata for a class
     *
     * @param  string                    $className Class to get all metadata for
     * @param  array                     $visited   Classes we've already visited to prevent infinite recursion.
     * @param  array                     $groups    Serialization groups to include.
     * @return array                     metadata for given class
     * @throws \InvalidArgumentException
     */
    protected function doParse($className, $visited = array(), array $groups = array())
    {
        $meta = $this->factory->getMetadataForClass($className);

        if (null === $meta) {
            throw new \InvalidArgumentException(sprintf("No metadata found for class %s", $className));
        }

        $exclusionStrategies   = array();
        if ($groups) {

The expression $groups of type array is implicitly converted to a boolean; are you sure this is intended? If so, consider using ! empty($expr) instead to make it clear that you intend to check for an array without elements.

            $exclusionStrategies[] = new GroupsExclusionStrategy($groups);
        }

        $params = array();

        // iterate over property metadata
        foreach ($meta->propertyMetadata as $item) {
            if (!is_null($item->type)) {
                $name = $this->namingStrategy->translateName($item);

                $dataType = $this->processDataType($item);

                // apply exclusion strategies
                foreach ($exclusionStrategies as $strategy) {
                    if (true === $strategy->shouldSkipProperty($item, SerializationContext::create())) {
                        continue 2;
                    }
                }

                $params[$name] = array(
                    'dataType'     => $dataType['normalized'],
                    'required'     => false,
                    'readonly'     => $item->readOnly,
                    'sinceVersion' => $item->sinceVersion,
                    'untilVersion' => $item->untilVersion,
                );

                if (!is_null($dataType['class'])) {
                    $params[$name]['class'] = $dataType['class'];
                }

                // if class already parsed, continue, to avoid infinite recursion
                if (in_array($dataType['class'], $visited)) {
                    continue;
                }

                // check for nested classes with JMS metadata
                if ($dataType['class'] && null !== $this->factory->getMetadataForClass($dataType['class'])) {
                    $visited[]                 = $dataType['class'];
                    $params[$name]['children'] = $this->doParse($dataType['class'], $visited, $groups);
                }
            }
        }

        return $params;
    }

    /**
     * Figure out a normalized data type (for documentation), and get a
     * nested class name, if available.
     *
     * @return array
     */
    protected function processDataType(PropertyMetadata $item)
    {
        // check for a type inside something that could be treated as an array
        if ($nestedType = $this->getNestedTypeInArray($item)) {
            if ($this->isPrimitive($nestedType)) {
                return array(
                    'normalized' => sprintf("array of %ss", $nestedType),
                    'class' => null
                );
            }

            $exp = explode("\\", $nestedType);

            return array(
                'normalized' => sprintf("array of objects (%s)", end($exp)),
                'class' => $nestedType
            );
        }

        $type = $item->type['name'];

        // could be basic type
        if ($this->isPrimitive($type)) {
            return array(
                'normalized' => $type,
                'class' => null
            );
        }

        // we can use type property also for custom handlers, then we don't have here real class name
        if (!class_exists($type)) {
            return array(
                'normalized' => sprintf("custom handler result for (%s)", $type),
                'class' => null
            );
        }

        // if we got this far, it's a general class name
        $exp = explode("\\", $type);

        return array(
            'normalized' => sprintf("object (%s)", end($exp)),
            'class' => $type
        );
    }

    protected function isPrimitive($type)
    {
        return in_array($type, array('boolean', 'integer', 'string', 'float', 'double', 'array', 'DateTime'));
    }

    /**
     * Check the various ways JMS describes values in arrays, and
     * get the value type in the array
     *
     * @param  PropertyMetadata $item
     * @return string|null
     */
    protected function getNestedTypeInArray(PropertyMetadata $item)
    {
        if (isset($item->type['name']) && in_array($item->type['name'], array('array', 'ArrayCollection'))) {
            if (isset($item->type['params'][1]['name'])) {

This code seems to be duplicated across your project.

                // E.g. array<string, MyNamespaceMyObject>
                return $item->type['params'][1]['name'];
            }
            if (isset($item->type['params'][0]['name'])) {

This code seems to be duplicated across your project.

                // E.g. array<MyNamespaceMyObject>
                return $item->type['params'][0]['name'];
            }
        }

        return null;
    }

}