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<?php declare(strict_types=1); namespace Automattic\WooCommerce\Vendor\GraphQL\Type\Definition; use Automattic\WooCommerce\Vendor\GraphQL\Error\Error; use Automattic\WooCommerce\Vendor\GraphQL\Error\InvariantViolation; use Automattic\WooCommerce\Vendor\GraphQL\Executor\Values; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\FieldNode; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\FragmentDefinitionNode; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\FragmentSpreadNode; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\InlineFragmentNode; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\OperationDefinitionNode; use Automattic\WooCommerce\Vendor\GraphQL\Language\AST\SelectionSetNode; use Automattic\WooCommerce\Vendor\GraphQL\Type\Introspection; use Automattic\WooCommerce\Vendor\GraphQL\Type\Schema; /** * Structure containing information useful for field resolution process. * * Passed as 4th argument to every field resolver. See [docs on field resolving (data fetching)](data-fetching.md). * * @phpstan-import-type QueryPlanOptions from QueryPlan * * @phpstan-type Path list<string\|int> / class ResolveInfo { /* * The definition of the field being resolved. * * @api / public FieldDefinition $fieldDefinition; /* * The name of the field being resolved. * * @api / public string $fieldName; /* * Expected return type of the field being resolved. * * @api / public Type $returnType; /* * AST of all nodes referencing this field in the query. * * @api * * @var \ArrayObject<int, FieldNode> / public \ArrayObject $fieldNodes; /* * Parent type of the field being resolved. * * @api / public ObjectType $parentType; /* * Path to this field from the very root value. When fields are aliased, the path includes aliases. * * @api * * @var list<string\|int> * * @phpstan-var Path / public array $path; /* * Path to this field from the very root value. This will never include aliases. * * @api * * @var list<string\|int> * * @phpstan-var Path / public array $unaliasedPath; /* * Instance of a schema used for execution. * * @api / public Schema $schema; /* * AST of all fragments defined in query. * * @api * * @var array<string, FragmentDefinitionNode> / public array $fragments = []; /* * Root value passed to query execution. * * @api * * @var mixed / public $rootValue; /* * AST of operation definition node (query, mutation). * * @api / public OperationDefinitionNode $operation; /* * Array of variables passed to query execution. * * @api * * @var array<string, mixed> / public array $variableValues = []; /* * @param \ArrayObject<int, FieldNode> $fieldNodes * @param list<string\|int> $path * @param array<string, FragmentDefinitionNode> $fragments * @param mixed\|null $rootValue * @param array<string, mixed> $variableValues * @param list<string\|int> $unaliasedPath * * @phpstan-param Path $path * @phpstan-param Path $unaliasedPath / public function __construct( FieldDefinition $fieldDefinition, \ArrayObject $fieldNodes, ObjectType $parentType, array $path, Schema $schema, array $fragments, $rootValue, OperationDefinitionNode $operation, array $variableValues, array $unaliasedPath = [] ) { $this->fieldDefinition = $fieldDefinition; $this->fieldName = $fieldDefinition->name; $this->returnType = $fieldDefinition->getType(); $this->fieldNodes = $fieldNodes; $this->parentType = $parentType; $this->path = $path; $this->unaliasedPath = $unaliasedPath; $this->schema = $schema; $this->fragments = $fragments; $this->rootValue = $rootValue; $this->operation = $operation; $this->variableValues = $variableValues; } /* * Returns names of all fields selected in query for `$this->fieldName` up to `$depth` levels. * * Example: * { * root { * id * nested { * nested1 * nested2 { * nested3 * } * } * } * } * * Given this ResolveInfo instance is a part of root field resolution, and $depth === 1, * this method will return: * [ * 'id' => true, * 'nested' => [ * 'nested1' => true, * 'nested2' => true, * ], * ] * * This method does not consider conditional typed fragments. * Use it with care for fields of interface and union types. * * @param int $depth How many levels to include in the output beyond the first * * @return array<string, mixed> * * @api / public function getFieldSelection(int $depth = 0): array { $fields = []; foreach ($this->fieldNodes as $fieldNode) { $selectionSet = $fieldNode->selectionSet; if ($selectionSet !== null) { $fields = array_merge_recursive( $fields, $this->foldSelectionSet($selectionSet, $depth) ); } } return $fields; } /* * Returns names and args of all fields selected in query for `$this->fieldName` up to `$depth` levels, including aliases. * * The result maps original field names to a map of selections for that field, including aliases. * For each of those selections, you can find the following keys: * - "args" contains the passed arguments for this field/alias (not on an union inline fragment) * - "type" contains the related Type instance found (will be the same for all aliases of a field) * - "selectionSet" contains potential nested fields of this field/alias (only on ObjectType). The structure is recursive from here. * - "unions" contains potential object types contained in an UnionType (only on UnionType). The structure is recursive from here and will go through the selectionSet of the object types. * * Example: * { * root { * id * nested { * nested1(myArg: 1) * nested1Bis: nested1 * } * alias1: nested { * nested1(myArg: 2, mySecondAg: "test") * } * myUnion(myArg: 3) { * ...on Nested { * nested1(myArg: 4) * } * ...on MyCustomObject { * nested3 * } * } * } * } * * Given this ResolveInfo instance is a part of root field resolution, * $depth === 1, * and fields "nested" represents an ObjectType named "Nested", * this method will return: * [ * 'id' => [ * 'id' => [ * 'args' => [], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\IntType Object ( ... )), * ], * ], * 'nested' => [ * 'nested' => [ * 'args' => [], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\ObjectType Object ( ... )), * 'selectionSet' => [ * 'nested1' => [ * 'nested1' => [ * 'args' => [ * 'myArg' => 1, * ], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\StringType Object ( ... )), * ], * 'nested1Bis' => [ * 'args' => [], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\StringType Object ( ... )), * ], * ], * ], * ], * ], * 'alias1' => [ * 'alias1' => [ * 'args' => [], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\ObjectType Object ( ... )), * 'selectionSet' => [ * 'nested1' => [ * 'nested1' => [ * 'args' => [ * 'myArg' => 2, * 'mySecondAg' => "test", * ], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\StringType Object ( ... )), * ], * ], * ], * ], * ], * 'myUnion' => [ * 'myUnion' => [ * 'args' => [ * 'myArg' => 3, * ], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\UnionType Object ( ... )), * 'unions' => [ * 'Nested' => [ * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\ObjectType Object ( ... )), * 'selectionSet' => [ * 'nested1' => [ * 'nested1' => [ * 'args' => [ * 'myArg' => 4, * ], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\StringType Object ( ... )), * ], * ], * ], * ], * 'MyCustomObject' => [ * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Tests\Type\TestClasses\MyCustomType Object ( ... )), * 'selectionSet' => [ * 'nested3' => [ * 'nested3' => [ * 'args' => [], * 'type' => Automattic\WooCommerce\Vendor\GraphQL\Type\Definition\StringType Object ( ... )), * ], * ], * ], * ], * ], * ], * ], * ] * * @param int $depth How many levels to include in the output beyond the first * * @throws \Exception * @throws Error * @throws InvariantViolation * * @return array<string, mixed> * * @api / public function getFieldSelectionWithAliases(int $depth = 0): array { $fields = []; foreach ($this->fieldNodes as $fieldNode) { $selectionSet = $fieldNode->selectionSet; if ($selectionSet !== null) { $field = $this->parentType->getField($fieldNode->name->value); $fieldType = $field->getType(); $fields = array_merge_recursive( $fields, $this->foldSelectionWithAlias($selectionSet, $depth, $fieldType) ); } } return $fields; } /* * @param QueryPlanOptions $options * * @throws \Exception * @throws Error * @throws InvariantViolation / public function lookAhead(array $options = []): QueryPlan { return new QueryPlan( $this->parentType, $this->schema, $this->fieldNodes, $this->variableValues, $this->fragments, $options ); } /* @return array<string, bool> / private function foldSelectionSet(SelectionSetNode $selectionSet, int $descend): array { /* @var array<string, bool> $fields / $fields = []; foreach ($selectionSet->selections as $selection) { if ($selection instanceof FieldNode) { $fields[$selection->name->value] = $descend > 0 && $selection->selectionSet !== null ? array_merge_recursive( $fields[$selection->name->value] ?? [], $this->foldSelectionSet($selection->selectionSet, $descend - 1) ) : true; } elseif ($selection instanceof FragmentSpreadNode) { $spreadName = $selection->name->value; $fragment = $this->fragments[$spreadName] ?? null; if ($fragment === null) { continue; } $fields = array_merge_recursive( $this->foldSelectionSet($fragment->selectionSet, $descend), $fields ); } elseif ($selection instanceof InlineFragmentNode) { $fields = array_merge_recursive( $this->foldSelectionSet($selection->selectionSet, $descend), $fields ); } } return $fields; } /* * @throws \Exception * @throws Error * @throws InvariantViolation * * @return array<string> / private function foldSelectionWithAlias(SelectionSetNode $selectionSet, int $descend, Type $parentType): array { /* @var array<string, bool> $fields */ $fields = []; if ($parentType instanceof WrappingType) { $parentType = $parentType->getInnermostType(); } foreach ($selectionSet->selections as $selection) { if ($selection instanceof FieldNode) { $fieldName = $selection->name->value; $aliasName = $selection->alias->value ?? $fieldName; if ($fieldName === Introspection::TYPE_NAME_FIELD_NAME) { continue; } assert($parentType instanceof HasFieldsType, 'ensured by query validation'); $aliasInfo = &$fields[$fieldName][$aliasName]; $fieldDef = $parentType->getField($fieldName); $aliasInfo['args'] = Values::getArgumentValues($fieldDef, $selection, $this->variableValues); $fieldType = $fieldDef->getType(); $namedFieldType = $fieldType; if ($namedFieldType instanceof WrappingType) { $namedFieldType = $namedFieldType->getInnermostType(); } $aliasInfo['type'] = $namedFieldType; if ($descend <= 0) { continue; } $nestedSelectionSet = $selection->selectionSet; if ($nestedSelectionSet === null) { continue; } if ($namedFieldType instanceof UnionType) { $aliasInfo['unions'] = $this->foldSelectionWithAlias($nestedSelectionSet, $descend, $fieldType); continue; } $aliasInfo['selectionSet'] = $this->foldSelectionWithAlias($nestedSelectionSet, $descend - 1, $fieldType); } elseif ($selection instanceof FragmentSpreadNode) { $spreadName = $selection->name->value; $fragment = $this->fragments[$spreadName] ?? null; if ($fragment === null) { continue; } $fieldType = $this->schema->getType($fragment->typeCondition->name->value); assert($fieldType instanceof Type, 'ensured by query validation'); $fields = array_merge_recursive( $this->foldSelectionWithAlias($fragment->selectionSet, $descend, $fieldType), $fields ); } elseif ($selection instanceof InlineFragmentNode) { $typeCondition = $selection->typeCondition; $fieldType = $typeCondition === null ? $parentType : $this->schema->getType($typeCondition->name->value); assert($fieldType instanceof Type, 'ensured by query validation'); if ($parentType instanceof UnionType) { assert($fieldType instanceof NamedType, 'ensured by query validation'); $fieldTypeInfo = &$fields[$fieldType->name()]; $fieldTypeInfo['type'] = $fieldType; $fieldTypeInfo['selectionSet'] = $this->foldSelectionWithAlias($selection->selectionSet, $descend, $fieldType); continue; } $fields = array_merge_recursive( $this->foldSelectionWithAlias($selection->selectionSet, $descend, $fieldType), $fields ); } } return $fields; } }

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