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<?php |
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namespace Overblog\GraphQLBundle\Config; |
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use Symfony\Component\ExpressionLanguage\Expression; |
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class Processor |
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{ |
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const DEFAULT_EXPRESSION_LANGUAGE_TRIGGER = '@='; |
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/** @var string */ |
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private $expressionLanguageTrigger; |
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/** @var callable[] */ |
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private $processors = []; |
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public function __construct($expressionLanguageTrigger = self::DEFAULT_EXPRESSION_LANGUAGE_TRIGGER, array $processors = []) |
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{ |
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// add the default $processors to let users override it easily |
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array_push($processors, [$this, 'convertStringToExpressionObject']); |
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$this->processors = $processors; |
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$this->expressionLanguageTrigger = $expressionLanguageTrigger; |
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} |
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public function process(array $configs) |
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{ |
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foreach ($this->processors as $processor) { |
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$configs = call_user_func($processor, $configs); |
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} |
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return $configs; |
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} |
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public static function staticProcess( |
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array $configs, |
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$expressionLanguageTrigger = self::DEFAULT_EXPRESSION_LANGUAGE_TRIGGER, |
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array $processors = [] |
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) { |
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return (new static($expressionLanguageTrigger, $processors))->process($configs); |
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} |
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public function convertStringToExpressionObject(array $configs) |
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{ |
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return array_map(function ($v) { |
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if (is_array($v)) { |
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return $this->convertStringToExpressionObject($v); |
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} elseif (is_string($v) && 0 === strpos($v, $this->expressionLanguageTrigger)) { |
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return new Expression(substr($v, 2)); |
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} |
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return $v; |
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}, $configs); |
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} |
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public static function processBeforeNormalization(array $configs) |
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{ |
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$configs = static::processConfigsExtends($configs); |
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$configs = static::removedVirtualTypes($configs); |
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return $configs; |
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} |
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public static function removedVirtualTypes(array $configs) |
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{ |
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return array_filter($configs, function ($config) { |
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return !isset($config['virtual']) || true !== $config['virtual']; |
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}); |
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} |
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public static function processConfigsExtends(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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$flattenExtends = self::flattenExtends($name, $configs, $allowedTypes); |
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if (empty($flattenExtends)) { |
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continue; |
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} |
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$config = self::extendsTypeConfig($name, $flattenExtends, $configs); |
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} |
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return $configs; |
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} |
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private static function extendsTypeConfig($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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$parentTypes = array_reverse($parentTypes); |
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$mergedParentsConfig = call_user_func_array('array_replace_recursive', array_column($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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$configs = array_replace_recursive(['config' => $mergedParentsConfig], $childType); |
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return $configs; |
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} |
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private static function flattenExtends($name, array $configs, array $allowedTypes, $child = null, array $typesTreated = []) |
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{ |
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self::checkTypeExists($name, $configs, $child); |
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self::checkCircularReferenceExtendsTypes($name, $typesTreated); |
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self::checkAllowedExtendsTypes($name, $configs[$name], $allowedTypes, $child); |
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// flatten |
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$config = $configs[$name]; |
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if (empty($config['extends']) || !is_array($config['extends'])) { |
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return []; |
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} |
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$typesTreated[$name] = true; |
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$flattenExtendsTypes = []; |
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foreach ($config['extends'] as $typeToExtend) { |
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$flattenExtendsTypes[] = $typeToExtend; |
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$flattenExtendsTypes = array_merge( |
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$flattenExtendsTypes, |
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self::flattenExtends($typeToExtend, $configs, $allowedTypes, $name, $typesTreated) |
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); |
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} |
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return $flattenExtendsTypes; |
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} |
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private static function checkTypeExists($name, array $configs, $child) |
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{ |
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if (!isset($configs[$name])) { |
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throw new \InvalidArgumentException(sprintf( |
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'Type %s extends by %s not be found.', |
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json_encode($name), |
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json_encode($child) |
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)); |
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} |
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} |
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private static function checkCircularReferenceExtendsTypes($name, array $typesTreated) |
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{ |
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if (isset($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), [$name])) |
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)); |
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} |
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} |
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private static function checkAllowedExtendsTypes($name, array $config, array $allowedTypes, $child) |
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{ |
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if (!in_array($config['type'], $allowedTypes)) { |
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throw new \InvalidArgumentException(sprintf( |
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'Type %s can\'t extends %s because %s is not allowed type (%s).', |
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json_encode($name), |
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json_encode($child), |
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json_encode($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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} |
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overblog /
GraphQLBundle
