Your IP : 216.73.217.167
<?php
namespace YOOtheme\GraphQL\Utils;
use YOOtheme\GraphQL\Error\InvariantViolation;
use YOOtheme\GraphQL\Error\Warning;
use YOOtheme\GraphQL\Language\AST\FieldNode;
use YOOtheme\GraphQL\Language\AST\ListTypeNode;
use YOOtheme\GraphQL\Language\AST\NamedTypeNode;
use YOOtheme\GraphQL\Language\AST\Node;
use YOOtheme\GraphQL\Language\AST\NodeKind;
use YOOtheme\GraphQL\Language\AST\NonNullTypeNode;
use YOOtheme\GraphQL\Type\Schema;
use YOOtheme\GraphQL\Type\Definition\CompositeType;
use YOOtheme\GraphQL\Type\Definition\Directive;
use YOOtheme\GraphQL\Type\Definition\EnumType;
use YOOtheme\GraphQL\Type\Definition\FieldArgument;
use YOOtheme\GraphQL\Type\Definition\FieldDefinition;
use YOOtheme\GraphQL\Type\Definition\InputObjectType;
use YOOtheme\GraphQL\Type\Definition\InputType;
use YOOtheme\GraphQL\Type\Definition\InterfaceType;
use YOOtheme\GraphQL\Type\Definition\ListOfType;
use YOOtheme\GraphQL\Type\Definition\ObjectType;
use YOOtheme\GraphQL\Type\Definition\Type;
use YOOtheme\GraphQL\Type\Definition\UnionType;
use YOOtheme\GraphQL\Type\Definition\WrappingType;
use YOOtheme\GraphQL\Type\Introspection;
/**
* Class TypeInfo
* @package GraphQL\Utils
*/
class TypeInfo
{
/**
* @deprecated moved to GraphQL\Utils\TypeComparators
*/
public static function isEqualType(Type $typeA, Type $typeB)
{
return TypeComparators::isEqualType($typeA, $typeB);
}
/**
* @deprecated moved to GraphQL\Utils\TypeComparators
*/
static function isTypeSubTypeOf(Schema $schema, Type $maybeSubType, Type $superType)
{
return TypeComparators::isTypeSubTypeOf($schema, $maybeSubType, $superType);
}
/**
* @deprecated moved to GraphQL\Utils\TypeComparators
*/
static function doTypesOverlap(Schema $schema, CompositeType $typeA, CompositeType $typeB)
{
return TypeComparators::doTypesOverlap($schema, $typeA, $typeB);
}
/**
* @param Schema $schema
* @param NamedTypeNode|ListTypeNode|NonNullTypeNode $inputTypeNode
* @return Type
* @throws InvariantViolation
*/
public static function typeFromAST(Schema $schema, $inputTypeNode)
{
return AST::typeFromAST($schema, $inputTypeNode);
}
/**
* Given root type scans through all fields to find nested types. Returns array where keys are for type name
* and value contains corresponding type instance.
*
* Example output:
* [
* 'String' => $instanceOfStringType,
* 'MyType' => $instanceOfMyType,
* ...
* ]
*
* @param Type $type
* @param array|null $typeMap
* @return array
*/
public static function extractTypes($type, array $typeMap = null)
{
if (!$typeMap) {
$typeMap = [];
}
if (!$type) {
return $typeMap;
}
if ($type instanceof WrappingType) {
return self::extractTypes($type->getWrappedType(true), $typeMap);
}
if (!$type instanceof Type) {
Warning::warnOnce(
'One of the schema types is not a valid type definition instance. '.
'Try running $schema->assertValid() to find out the cause of this warning.',
Warning::WARNING_NOT_A_TYPE
);
return $typeMap;
}
if (!empty($typeMap[$type->name])) {
Utils::invariant(
$typeMap[$type->name] === $type,
"Schema must contain unique named types but contains multiple types named \"$type\" ".
"(see http://webonyx.github.io/graphql-php/type-system/#type-registry)."
);
return $typeMap;
}
$typeMap[$type->name] = $type;
$nestedTypes = [];
if ($type instanceof UnionType) {
$nestedTypes = $type->getTypes();
}
if ($type instanceof ObjectType) {
$nestedTypes = array_merge($nestedTypes, $type->getInterfaces());
}
if ($type instanceof ObjectType || $type instanceof InterfaceType) {
foreach ((array) $type->getFields() as $fieldName => $field) {
if (!empty($field->args)) {
$fieldArgTypes = array_map(function(FieldArgument $arg) { return $arg->getType(); }, $field->args);
$nestedTypes = array_merge($nestedTypes, $fieldArgTypes);
}
$nestedTypes[] = $field->getType();
}
}
if ($type instanceof InputObjectType) {
foreach ((array) $type->getFields() as $fieldName => $field) {
$nestedTypes[] = $field->getType();
}
}
foreach ($nestedTypes as $type) {
$typeMap = self::extractTypes($type, $typeMap);
}
return $typeMap;
}
/**
* Not exactly the same as the executor's definition of getFieldDef, in this
* statically evaluated environment we do not always have an Object type,
* and need to handle Interface and Union types.
*
* @return FieldDefinition
*/
static private function getFieldDefinition(Schema $schema, Type $parentType, FieldNode $fieldNode)
{
$name = $fieldNode->name->value;
$schemaMeta = Introspection::schemaMetaFieldDef();
if ($name === $schemaMeta->name && $schema->getQueryType() === $parentType) {
return $schemaMeta;
}
$typeMeta = Introspection::typeMetaFieldDef();
if ($name === $typeMeta->name && $schema->getQueryType() === $parentType) {
return $typeMeta;
}
$typeNameMeta = Introspection::typeNameMetaFieldDef();
if ($name === $typeNameMeta->name && $parentType instanceof CompositeType) {
return $typeNameMeta;
}
if ($parentType instanceof ObjectType ||
$parentType instanceof InterfaceType) {
$fields = $parentType->getFields();
return isset($fields[$name]) ? $fields[$name] : null;
}
return null;
}
/**
* @var Schema
*/
private $schema;
/**
* @var \SplStack<OutputType>
*/
private $typeStack;
/**
* @var \SplStack<CompositeType>
*/
private $parentTypeStack;
/**
* @var \SplStack<InputType>
*/
private $inputTypeStack;
/**
* @var \SplStack<FieldDefinition>
*/
private $fieldDefStack;
/**
* @var Directive
*/
private $directive;
/**
* @var FieldArgument
*/
private $argument;
/**
* @var mixed
*/
private $enumValue;
/**
* TypeInfo constructor.
* @param Schema $schema
* @param Type|null $initialType
*/
public function __construct(Schema $schema, $initialType = null)
{
$this->schema = $schema;
$this->typeStack = [];
$this->parentTypeStack = [];
$this->inputTypeStack = [];
$this->fieldDefStack = [];
if ($initialType) {
if (Type::isInputType($initialType)) {
$this->inputTypeStack[] = $initialType;
}
if (Type::isCompositeType($initialType)) {
$this->parentTypeStack[] = $initialType;
}
if (Type::isOutputType($initialType)) {
$this->typeStack[] = $initialType;
}
}
}
/**
* @return Type
*/
function getType()
{
if (!empty($this->typeStack)) {
return $this->typeStack[count($this->typeStack) - 1];
}
return null;
}
/**
* @return CompositeType
*/
function getParentType()
{
if (!empty($this->parentTypeStack)) {
return $this->parentTypeStack[count($this->parentTypeStack) - 1];
}
return null;
}
/**
* @return InputType
*/
function getInputType()
{
if (!empty($this->inputTypeStack)) {
return $this->inputTypeStack[count($this->inputTypeStack) - 1];
}
return null;
}
/**
* @return InputType|null
*/
public function getParentInputType()
{
$inputTypeStackLength = count($this->inputTypeStack);
if ($inputTypeStackLength > 1) {
return $this->inputTypeStack[$inputTypeStackLength - 2];
}
}
/**
* @return FieldDefinition
*/
function getFieldDef()
{
if (!empty($this->fieldDefStack)) {
return $this->fieldDefStack[count($this->fieldDefStack) - 1];
}
return null;
}
/**
* @return Directive|null
*/
function getDirective()
{
return $this->directive;
}
/**
* @return FieldArgument|null
*/
function getArgument()
{
return $this->argument;
}
/**
* @return mixed
*/
function getEnumValue()
{
return $this->enumValue;
}
/**
* @param Node $node
*/
function enter(Node $node)
{
$schema = $this->schema;
// Note: many of the types below are explicitly typed as "mixed" to drop
// any assumptions of a valid schema to ensure runtime types are properly
// checked before continuing since TypeInfo is used as part of validation
// which occurs before guarantees of schema and document validity.
switch ($node->kind) {
case NodeKind::SELECTION_SET:
$namedType = Type::getNamedType($this->getType());
$this->parentTypeStack[] = Type::isCompositeType($namedType) ? $namedType : null;
break;
case NodeKind::FIELD:
$parentType = $this->getParentType();
$fieldDef = null;
if ($parentType) {
$fieldDef = self::getFieldDefinition($schema, $parentType, $node);
}
$fieldType = null;
if ($fieldDef) {
$fieldType = $fieldDef->getType();
}
$this->fieldDefStack[] = $fieldDef;
$this->typeStack[] = Type::isOutputType($fieldType) ? $fieldType : null;
break;
case NodeKind::DIRECTIVE:
$this->directive = $schema->getDirective($node->name->value);
break;
case NodeKind::OPERATION_DEFINITION:
$type = null;
if ($node->operation === 'query') {
$type = $schema->getQueryType();
} else if ($node->operation === 'mutation') {
$type = $schema->getMutationType();
} else if ($node->operation === 'subscription') {
$type = $schema->getSubscriptionType();
}
$this->typeStack[] = Type::isOutputType($type) ? $type : null;
break;
case NodeKind::INLINE_FRAGMENT:
case NodeKind::FRAGMENT_DEFINITION:
$typeConditionNode = $node->typeCondition;
$outputType = $typeConditionNode ? self::typeFromAST($schema, $typeConditionNode) : Type::getNamedType($this->getType());
$this->typeStack[] = Type::isOutputType($outputType) ? $outputType : null;
break;
case NodeKind::VARIABLE_DEFINITION:
$inputType = self::typeFromAST($schema, $node->type);
$this->inputTypeStack[] = Type::isInputType($inputType) ? $inputType : null; // push
break;
case NodeKind::ARGUMENT:
$fieldOrDirective = $this->getDirective() ?: $this->getFieldDef();
$argDef = $argType = null;
if ($fieldOrDirective) {
$argDef = Utils::find($fieldOrDirective->args, function($arg) use ($node) {return $arg->name === $node->name->value;});
if ($argDef) {
$argType = $argDef->getType();
}
}
$this->argument = $argDef;
$this->inputTypeStack[] = Type::isInputType($argType) ? $argType : null;
break;
case NodeKind::LST:
$listType = Type::getNullableType($this->getInputType());
$itemType = $listType instanceof ListOfType
? $listType->getWrappedType()
: $listType;
$this->inputTypeStack[] = Type::isInputType($itemType) ? $itemType : null;
break;
case NodeKind::OBJECT_FIELD:
$objectType = Type::getNamedType($this->getInputType());
$fieldType = null;
$inputFieldType = null;
if ($objectType instanceof InputObjectType) {
$tmp = $objectType->getFields();
$inputField = isset($tmp[$node->name->value]) ? $tmp[$node->name->value] : null;
$inputFieldType = $inputField ? $inputField->getType() : null;
}
$this->inputTypeStack[] = Type::isInputType($inputFieldType) ? $inputFieldType : null;
break;
case NodeKind::ENUM:
$enumType = Type::getNamedType($this->getInputType());
$enumValue = null;
if ($enumType instanceof EnumType) {
$enumValue = $enumType->getValue($node->value);
}
$this->enumValue = $enumValue;
break;
}
}
/**
* @param Node $node
*/
function leave(Node $node)
{
switch ($node->kind) {
case NodeKind::SELECTION_SET:
array_pop($this->parentTypeStack);
break;
case NodeKind::FIELD:
array_pop($this->fieldDefStack);
array_pop($this->typeStack);
break;
case NodeKind::DIRECTIVE:
$this->directive = null;
break;
case NodeKind::OPERATION_DEFINITION:
case NodeKind::INLINE_FRAGMENT:
case NodeKind::FRAGMENT_DEFINITION:
array_pop($this->typeStack);
break;
case NodeKind::VARIABLE_DEFINITION:
array_pop($this->inputTypeStack);
break;
case NodeKind::ARGUMENT:
$this->argument = null;
array_pop($this->inputTypeStack);
break;
case NodeKind::LST:
case NodeKind::OBJECT_FIELD:
array_pop($this->inputTypeStack);
break;
case NodeKind::ENUM:
$this->enumValue = null;
break;
}
}
}