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<?php |
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declare(strict_types=1); |
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namespace Overblog\GraphQLBundle\Config\Processor; |
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final class InheritanceProcessor implements ProcessorInterface |
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{ |
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public const HEIRS_KEY = 'heirs'; |
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public const INHERITS_KEY = 'inherits'; |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function process(array $configs): array |
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{ |
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$configs = self::processConfigsHeirs($configs); |
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$configs = self::processConfigsInherits($configs); |
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$configs = self::removedDecorators($configs); |
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return $configs; |
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} |
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private static function removedDecorators(array $configs) |
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{ |
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return \array_filter($configs, function ($config) { |
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return !isset($config['decorator']) || true !== $config['decorator']; |
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}); |
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} |
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private static function processConfigsHeirs(array $configs) |
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{ |
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foreach ($configs as $parentName => &$config) { |
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if (!empty($config[self::HEIRS_KEY])) { |
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// allows shorthand configuration `heirs: QueryFooDecorator` is equivalent to `heirs: [QueryFooDecorator]` |
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if (!\is_array($config[self::HEIRS_KEY])) { |
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$config[self::HEIRS_KEY] = [$config[self::HEIRS_KEY]]; |
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} |
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foreach ($config[self::HEIRS_KEY] as $heirs) { |
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if (!isset($configs[$heirs])) { |
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throw new \InvalidArgumentException(\sprintf( |
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'Type %s child of %s not found.', |
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\json_encode($heirs), |
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\json_encode($parentName) |
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)); |
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} |
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if (!isset($configs[$heirs][self::INHERITS_KEY])) { |
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$configs[$heirs][self::INHERITS_KEY] = []; |
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} |
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$configs[$heirs][self::INHERITS_KEY][] = $parentName; |
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} |
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} |
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unset($config[self::HEIRS_KEY]); |
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} |
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return $configs; |
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} |
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private static function processConfigsInherits(array $configs) |
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{ |
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foreach ($configs as $name => &$config) { |
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if (!isset($config['type'])) { |
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continue; |
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} |
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$allowedTypes = [$config['type']]; |
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if ('object' === $config['type']) { |
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$allowedTypes[] = 'interface'; |
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} |
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$flattenInherits = self::flattenInherits($name, $configs, $allowedTypes); |
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if (empty($flattenInherits)) { |
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continue; |
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} |
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$config = self::inheritsTypeConfig($name, $flattenInherits, $configs); |
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} |
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return $configs; |
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} |
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private static function inheritsTypeConfig($child, array $parents, array $configs) |
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{ |
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$parentTypes = \array_intersect_key($configs, \array_flip($parents)); |
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// Restore initial order |
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\uksort($parentTypes, function ($a, $b) use ($parents) { |
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return \array_search($a, $parents, true) > \array_search($b, $parents, true); |
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}); |
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$mergedParentsConfig = self::mergeConfigs(...\array_column($parentTypes, 'config')); |
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$childType = $configs[$child]; |
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// unset resolveType field resulting from the merge of a "interface" type |
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if ('object' === $childType['type']) { |
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unset($mergedParentsConfig['resolveType']); |
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} |
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if (isset($mergedParentsConfig['interfaces'], $childType['config']['interfaces'])) { |
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$childType['config']['interfaces'] = \array_merge($mergedParentsConfig['interfaces'], $childType['config']['interfaces']); |
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} |
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$configs = \array_replace_recursive(['config' => $mergedParentsConfig], $childType); |
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return $configs; |
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} |
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private static function flattenInherits($name, array $configs, array $allowedTypes, $child = null, array $typesTreated = []) |
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{ |
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self::checkTypeExists($name, $configs, $child); |
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self::checkCircularReferenceInheritsTypes($name, $typesTreated); |
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self::checkAllowedInheritsTypes($name, $configs[$name], $allowedTypes, $child); |
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// flatten |
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$config = $configs[$name]; |
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if (empty($config[self::INHERITS_KEY]) || !\is_array($config[self::INHERITS_KEY])) { |
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return []; |
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} |
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$typesTreated[$name] = true; |
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$flattenInheritsTypes = []; |
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foreach ($config[self::INHERITS_KEY] as $typeToInherit) { |
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$flattenInheritsTypes = \array_merge( |
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$flattenInheritsTypes, |
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self::flattenInherits($typeToInherit, $configs, $allowedTypes, $name, $typesTreated) |
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); |
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$flattenInheritsTypes[] = $typeToInherit; |
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} |
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return $flattenInheritsTypes; |
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} |
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private static function checkTypeExists($name, array $configs, $child): void |
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{ |
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if (!isset($configs[$name])) { |
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throw new \InvalidArgumentException(\sprintf( |
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'Type %s inherited by %s not found.', |
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\json_encode($name), |
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\json_encode($child) |
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)); |
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} |
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} |
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private static function checkCircularReferenceInheritsTypes($name, array $typesTreated): void |
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{ |
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if (isset($typesTreated[$name])) { |
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throw new \InvalidArgumentException(\sprintf( |
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'Type circular inheritance detected (%s).', |
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\implode('->', \array_merge(\array_keys($typesTreated), [$name])) |
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)); |
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} |
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} |
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private static function checkAllowedInheritsTypes($name, array $config, array $allowedTypes, $child): void |
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{ |
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if (empty($config['decorator']) && isset($config['type']) && !\in_array($config['type'], $allowedTypes)) { |
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throw new \InvalidArgumentException(\sprintf( |
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'Type %s can\'t inherit %s because its type (%s) is not allowed type (%s).', |
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\json_encode($child), |
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\json_encode($name), |
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\json_encode($config['type']), |
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\json_encode($allowedTypes) |
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)); |
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} |
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} |
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private static function mergeConfigs(...$configs): array |
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{ |
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$result = []; |
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foreach ($configs as $config) { |
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$interfaces = $result['interfaces'] ?? null; |
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$result = \array_replace_recursive($result, $config); |
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if (!empty($interfaces) && !empty($config['interfaces'])) { |
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$result['interfaces'] = \array_values(\array_unique(\array_merge($interfaces, $config['interfaces']))); |
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} |
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} |
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return $result; |
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} |
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} |
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overblog /
GraphQLBundle
