mirror of
https://github.com/retailcrm/graphql-php.git
synced 2024-12-04 10:46:02 +03:00
647 lines
23 KiB
PHP
647 lines
23 KiB
PHP
<?php
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namespace GraphQL\Utils;
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use GraphQL\Error\Error;
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use GraphQL\Executor\Values;
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use GraphQL\Language\AST\DirectiveDefinitionNode;
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use GraphQL\Language\AST\DocumentNode;
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use GraphQL\Language\AST\EnumTypeDefinitionNode;
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use GraphQL\Language\AST\EnumValueDefinitionNode;
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use GraphQL\Language\AST\FieldDefinitionNode;
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use GraphQL\Language\AST\InputObjectTypeDefinitionNode;
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use GraphQL\Language\AST\InterfaceTypeDefinitionNode;
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use GraphQL\Language\AST\NodeKind;
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use GraphQL\Language\AST\ObjectTypeDefinitionNode;
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use GraphQL\Language\AST\ScalarTypeDefinitionNode;
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use GraphQL\Language\AST\TypeDefinitionNode;
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use GraphQL\Language\AST\TypeNode;
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use GraphQL\Language\AST\UnionTypeDefinitionNode;
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use GraphQL\Language\Parser;
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use GraphQL\Language\Source;
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use GraphQL\Language\Token;
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use GraphQL\Type\Schema;
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use GraphQL\Type\Definition\Directive;
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use GraphQL\Type\Definition\EnumType;
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use GraphQL\Type\Definition\InputObjectType;
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use GraphQL\Type\Definition\InterfaceType;
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use GraphQL\Type\Definition\FieldArgument;
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use GraphQL\Type\Definition\NonNull;
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use GraphQL\Type\Definition\ObjectType;
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use GraphQL\Type\Definition\CustomScalarType;
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use GraphQL\Type\Definition\Type;
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use GraphQL\Type\Definition\UnionType;
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use GraphQL\Type\Introspection;
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/**
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* Build instance of `GraphQL\Type\Schema` out of type language definition (string or parsed AST)
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* See [section in docs](type-system/type-language.md) for details.
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*/
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class BuildSchema
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{
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/**
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* @param Type $innerType
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* @param TypeNode $inputTypeNode
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* @return Type
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*/
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private function buildWrappedType(Type $innerType, TypeNode $inputTypeNode)
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{
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if ($inputTypeNode->kind == NodeKind::LIST_TYPE) {
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return Type::listOf($this->buildWrappedType($innerType, $inputTypeNode->type));
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}
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if ($inputTypeNode->kind == NodeKind::NON_NULL_TYPE) {
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$wrappedType = $this->buildWrappedType($innerType, $inputTypeNode->type);
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Utils::invariant(!($wrappedType instanceof NonNull), 'No nesting nonnull.');
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return Type::nonNull($wrappedType);
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}
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return $innerType;
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}
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private function getNamedTypeNode(TypeNode $typeNode)
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{
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$namedType = $typeNode;
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while ($namedType->kind === NodeKind::LIST_TYPE || $namedType->kind === NodeKind::NON_NULL_TYPE) {
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$namedType = $namedType->type;
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}
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return $namedType;
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}
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/**
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* This takes the ast of a schema document produced by the parse function in
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* GraphQL\Language\Parser.
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*
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* If no schema definition is provided, then it will look for types named Query
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* and Mutation.
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*
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* Given that AST it constructs a GraphQL\Type\Schema. The resulting schema
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* has no resolve methods, so execution will use default resolvers.
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*
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* @api
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* @param DocumentNode $ast
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* @param callable $typeConfigDecorator
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* @return Schema
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* @throws Error
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*/
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public static function buildAST(DocumentNode $ast, callable $typeConfigDecorator = null)
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{
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$builder = new self($ast, $typeConfigDecorator);
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return $builder->buildSchema();
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}
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private $ast;
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private $innerTypeMap;
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private $nodeMap;
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private $typeConfigDecorator;
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private $loadedTypeDefs;
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public function __construct(DocumentNode $ast, callable $typeConfigDecorator = null)
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{
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$this->ast = $ast;
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$this->typeConfigDecorator = $typeConfigDecorator;
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$this->loadedTypeDefs = [];
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}
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public function buildSchema()
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{
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$schemaDef = null;
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$typeDefs = [];
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$this->nodeMap = [];
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$directiveDefs = [];
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foreach ($this->ast->definitions as $d) {
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switch ($d->kind) {
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case NodeKind::SCHEMA_DEFINITION:
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if ($schemaDef) {
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throw new Error('Must provide only one schema definition.');
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}
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$schemaDef = $d;
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break;
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case NodeKind::SCALAR_TYPE_DEFINITION:
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case NodeKind::OBJECT_TYPE_DEFINITION:
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case NodeKind::INTERFACE_TYPE_DEFINITION:
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case NodeKind::ENUM_TYPE_DEFINITION:
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case NodeKind::UNION_TYPE_DEFINITION:
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case NodeKind::INPUT_OBJECT_TYPE_DEFINITION:
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$typeName = $d->name->value;
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if (!empty($this->nodeMap[$typeName])) {
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throw new Error("Type \"$typeName\" was defined more than once.");
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}
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$typeDefs[] = $d;
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$this->nodeMap[$typeName] = $d;
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break;
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case NodeKind::DIRECTIVE_DEFINITION:
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$directiveDefs[] = $d;
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break;
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}
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}
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$queryTypeName = null;
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$mutationTypeName = null;
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$subscriptionTypeName = null;
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if ($schemaDef) {
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foreach ($schemaDef->operationTypes as $operationType) {
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$typeName = $operationType->type->name->value;
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if ($operationType->operation === 'query') {
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if ($queryTypeName) {
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throw new Error('Must provide only one query type in schema.');
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}
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if (!isset($this->nodeMap[$typeName])) {
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throw new Error(
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'Specified query type "' . $typeName . '" not found in document.'
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);
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}
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$queryTypeName = $typeName;
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} else if ($operationType->operation === 'mutation') {
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if ($mutationTypeName) {
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throw new Error('Must provide only one mutation type in schema.');
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}
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if (!isset($this->nodeMap[$typeName])) {
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throw new Error(
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'Specified mutation type "' . $typeName . '" not found in document.'
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);
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}
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$mutationTypeName = $typeName;
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} else if ($operationType->operation === 'subscription') {
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if ($subscriptionTypeName) {
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throw new Error('Must provide only one subscription type in schema.');
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}
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if (!isset($this->nodeMap[$typeName])) {
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throw new Error(
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'Specified subscription type "' . $typeName . '" not found in document.'
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);
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}
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$subscriptionTypeName = $typeName;
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}
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}
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} else {
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if (isset($this->nodeMap['Query'])) {
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$queryTypeName = 'Query';
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}
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if (isset($this->nodeMap['Mutation'])) {
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$mutationTypeName = 'Mutation';
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}
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if (isset($this->nodeMap['Subscription'])) {
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$subscriptionTypeName = 'Subscription';
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}
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}
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if (!$queryTypeName) {
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throw new Error(
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'Must provide schema definition with query type or a type named Query.'
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);
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}
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$this->innerTypeMap = [
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'String' => Type::string(),
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'Int' => Type::int(),
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'Float' => Type::float(),
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'Boolean' => Type::boolean(),
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'ID' => Type::id(),
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'__Schema' => Introspection::_schema(),
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'__Directive' => Introspection::_directive(),
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'__DirectiveLocation' => Introspection::_directiveLocation(),
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'__Type' => Introspection::_type(),
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'__Field' => Introspection::_field(),
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'__InputValue' => Introspection::_inputValue(),
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'__EnumValue' => Introspection::_enumValue(),
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'__TypeKind' => Introspection::_typeKind(),
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];
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$directives = array_map([$this, 'getDirective'], $directiveDefs);
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// If specified directives were not explicitly declared, add them.
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$skip = array_reduce($directives, function($hasSkip, $directive) {
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return $hasSkip || $directive->name == 'skip';
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});
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if (!$skip) {
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$directives[] = Directive::skipDirective();
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}
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$include = array_reduce($directives, function($hasInclude, $directive) {
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return $hasInclude || $directive->name == 'include';
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});
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if (!$include) {
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$directives[] = Directive::includeDirective();
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}
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$deprecated = array_reduce($directives, function($hasDeprecated, $directive) {
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return $hasDeprecated || $directive->name == 'deprecated';
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});
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if (!$deprecated) {
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$directives[] = Directive::deprecatedDirective();
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}
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$schema = new Schema([
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'query' => $this->getObjectType($this->nodeMap[$queryTypeName]),
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'mutation' => $mutationTypeName ?
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$this->getObjectType($this->nodeMap[$mutationTypeName]) :
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null,
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'subscription' => $subscriptionTypeName ?
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$this->getObjectType($this->nodeMap[$subscriptionTypeName]) :
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null,
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'typeLoader' => function($name) {
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return $this->typeDefNamed($name);
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},
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'directives' => $directives,
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'astNode' => $schemaDef,
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'types' => function() {
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$types = [];
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foreach ($this->nodeMap as $name => $def) {
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if (!isset($this->loadedTypeDefs[$name])) {
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$types[] = $this->typeDefNamed($def->name->value);
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}
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}
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return $types;
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}
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]);
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return $schema;
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}
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private function getDirective(DirectiveDefinitionNode $directiveNode)
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{
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return new Directive([
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'name' => $directiveNode->name->value,
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'description' => $this->getDescription($directiveNode),
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'locations' => Utils::map($directiveNode->locations, function($node) {
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return $node->value;
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}),
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'args' => $directiveNode->arguments ? FieldArgument::createMap($this->makeInputValues($directiveNode->arguments)) : null,
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'astNode' => $directiveNode
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]);
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}
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private function getObjectType(TypeDefinitionNode $typeNode)
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{
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$type = $this->typeDefNamed($typeNode->name->value);
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Utils::invariant(
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$type instanceof ObjectType,
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'AST must provide object type.'
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);
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return $type;
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}
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private function produceType(TypeNode $typeNode)
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{
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$typeName = $this->getNamedTypeNode($typeNode)->name->value;
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$typeDef = $this->typeDefNamed($typeName);
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return $this->buildWrappedType($typeDef, $typeNode);
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}
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private function produceInputType(TypeNode $typeNode)
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{
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$type = $this->produceType($typeNode);
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Utils::invariant(Type::isInputType($type), 'Expected Input type.');
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return $type;
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}
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private function produceOutputType(TypeNode $typeNode)
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{
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$type = $this->produceType($typeNode);
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Utils::invariant(Type::isOutputType($type), 'Expected Input type.');
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return $type;
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}
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private function produceObjectType(TypeNode $typeNode)
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{
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$type = $this->produceType($typeNode);
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Utils::invariant($type instanceof ObjectType, 'Expected Object type.');
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return $type;
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}
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private function produceInterfaceType(TypeNode $typeNode)
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{
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$type = $this->produceType($typeNode);
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Utils::invariant($type instanceof InterfaceType, 'Expected Interface type.');
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return $type;
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}
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private function typeDefNamed($typeName)
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{
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if (isset($this->innerTypeMap[$typeName])) {
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return $this->innerTypeMap[$typeName];
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}
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if (!isset($this->nodeMap[$typeName])) {
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throw new Error('Type "' . $typeName . '" not found in document.');
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}
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$this->loadedTypeDefs[$typeName] = true;
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$config = $this->makeSchemaDefConfig($this->nodeMap[$typeName]);
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if ($this->typeConfigDecorator) {
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$fn = $this->typeConfigDecorator;
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try {
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$config = $fn($config, $this->nodeMap[$typeName], $this->nodeMap);
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} catch (\Exception $e) {
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throw new Error(
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"Type config decorator passed to " . (static::class) . " threw an error ".
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"when building $typeName type: {$e->getMessage()}",
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null,
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null,
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null,
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null,
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$e
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);
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} catch (\Throwable $e) {
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throw new Error(
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"Type config decorator passed to " . (static::class) . " threw an error ".
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"when building $typeName type: {$e->getMessage()}",
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null,
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null,
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null,
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null,
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$e
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);
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}
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if (!is_array($config) || isset($config[0])) {
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throw new Error(
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"Type config decorator passed to " . (static::class) . " is expected to return an array, but got ".
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Utils::getVariableType($config)
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);
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}
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}
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$innerTypeDef = $this->makeSchemaDef($this->nodeMap[$typeName], $config);
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if (!$innerTypeDef) {
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throw new Error("Nothing constructed for $typeName.");
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}
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$this->innerTypeMap[$typeName] = $innerTypeDef;
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return $innerTypeDef;
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}
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private function makeSchemaDefConfig($def)
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{
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if (!$def) {
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throw new Error('def must be defined.');
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}
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switch ($def->kind) {
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case NodeKind::OBJECT_TYPE_DEFINITION:
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return $this->makeTypeDefConfig($def);
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case NodeKind::INTERFACE_TYPE_DEFINITION:
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return $this->makeInterfaceDefConfig($def);
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case NodeKind::ENUM_TYPE_DEFINITION:
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return $this->makeEnumDefConfig($def);
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case NodeKind::UNION_TYPE_DEFINITION:
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return $this->makeUnionDefConfig($def);
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case NodeKind::SCALAR_TYPE_DEFINITION:
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return $this->makeScalarDefConfig($def);
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case NodeKind::INPUT_OBJECT_TYPE_DEFINITION:
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return $this->makeInputObjectDefConfig($def);
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default:
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throw new Error("Type kind of {$def->kind} not supported.");
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}
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}
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private function makeSchemaDef($def, array $config = null)
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{
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if (!$def) {
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throw new Error('def must be defined.');
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}
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$config = $config ?: $this->makeSchemaDefConfig($def);
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switch ($def->kind) {
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case NodeKind::OBJECT_TYPE_DEFINITION:
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return new ObjectType($config);
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case NodeKind::INTERFACE_TYPE_DEFINITION:
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return new InterfaceType($config);
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case NodeKind::ENUM_TYPE_DEFINITION:
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return new EnumType($config);
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case NodeKind::UNION_TYPE_DEFINITION:
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return new UnionType($config);
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case NodeKind::SCALAR_TYPE_DEFINITION:
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return new CustomScalarType($config);
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case NodeKind::INPUT_OBJECT_TYPE_DEFINITION:
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return new InputObjectType($config);
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default:
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throw new Error("Type kind of {$def->kind} not supported.");
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}
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}
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private function makeTypeDefConfig(ObjectTypeDefinitionNode $def)
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{
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$typeName = $def->name->value;
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return [
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'name' => $typeName,
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'description' => $this->getDescription($def),
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'fields' => function() use ($def) {
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return $this->makeFieldDefMap($def);
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},
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'interfaces' => function() use ($def) {
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return $this->makeImplementedInterfaces($def);
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},
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'astNode' => $def
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];
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}
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private function makeFieldDefMap($def)
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{
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return Utils::keyValMap(
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$def->fields,
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function ($field) {
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return $field->name->value;
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},
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function($field) {
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return [
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'type' => $this->produceOutputType($field->type),
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'description' => $this->getDescription($field),
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'args' => $this->makeInputValues($field->arguments),
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'deprecationReason' => $this->getDeprecationReason($field),
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'astNode' => $field
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];
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}
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);
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}
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private function makeImplementedInterfaces(ObjectTypeDefinitionNode $def)
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{
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if (isset($def->interfaces)) {
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return Utils::map($def->interfaces, function ($iface) {
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return $this->produceInterfaceType($iface);
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});
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}
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return null;
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}
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private function makeInputValues($values)
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{
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return Utils::keyValMap(
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$values,
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function ($value) {
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return $value->name->value;
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},
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function($value) {
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$type = $this->produceInputType($value->type);
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$config = [
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'name' => $value->name->value,
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'type' => $type,
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'description' => $this->getDescription($value),
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'astNode' => $value
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];
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if (isset($value->defaultValue)) {
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$config['defaultValue'] = AST::valueFromAST($value->defaultValue, $type);
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}
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return $config;
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}
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);
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}
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private function makeInterfaceDefConfig(InterfaceTypeDefinitionNode $def)
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{
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$typeName = $def->name->value;
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return [
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'name' => $typeName,
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'description' => $this->getDescription($def),
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'fields' => function() use ($def) {
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return $this->makeFieldDefMap($def);
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},
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'astNode' => $def,
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'resolveType' => function() {
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$this->cannotExecuteSchema();
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}
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];
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}
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private function makeEnumDefConfig(EnumTypeDefinitionNode $def)
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{
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return [
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'name' => $def->name->value,
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'description' => $this->getDescription($def),
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'astNode' => $def,
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'values' => Utils::keyValMap(
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$def->values,
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function($enumValue) {
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return $enumValue->name->value;
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},
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function($enumValue) {
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return [
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'description' => $this->getDescription($enumValue),
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'deprecationReason' => $this->getDeprecationReason($enumValue),
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'astNode' => $enumValue
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];
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}
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)
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];
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}
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private function makeUnionDefConfig(UnionTypeDefinitionNode $def)
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{
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return [
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'name' => $def->name->value,
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'description' => $this->getDescription($def),
|
|
'types' => Utils::map($def->types, function($typeNode) {
|
|
return $this->produceObjectType($typeNode);
|
|
}),
|
|
'astNode' => $def,
|
|
'resolveType' => [$this, 'cannotExecuteSchema']
|
|
];
|
|
}
|
|
|
|
private function makeScalarDefConfig(ScalarTypeDefinitionNode $def)
|
|
{
|
|
return [
|
|
'name' => $def->name->value,
|
|
'description' => $this->getDescription($def),
|
|
'astNode' => $def,
|
|
'serialize' => function() {
|
|
return false;
|
|
},
|
|
// Note: validation calls the parse functions to determine if a
|
|
// literal value is correct. Returning null would cause use of custom
|
|
// scalars to always fail validation. Returning false causes them to
|
|
// always pass validation.
|
|
'parseValue' => function() {
|
|
return false;
|
|
},
|
|
'parseLiteral' => function() {
|
|
return false;
|
|
}
|
|
];
|
|
}
|
|
|
|
private function makeInputObjectDefConfig(InputObjectTypeDefinitionNode $def)
|
|
{
|
|
return [
|
|
'name' => $def->name->value,
|
|
'description' => $this->getDescription($def),
|
|
'fields' => function() use ($def) { return $this->makeInputValues($def->fields); },
|
|
'astNode' => $def,
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Given a collection of directives, returns the string value for the
|
|
* deprecation reason.
|
|
*
|
|
* @param EnumValueDefinitionNode | FieldDefinitionNode $node
|
|
* @return string
|
|
*/
|
|
private function getDeprecationReason($node)
|
|
{
|
|
$deprecated = Values::getDirectiveValues(Directive::deprecatedDirective(), $node);
|
|
return isset($deprecated['reason']) ? $deprecated['reason'] : null;
|
|
}
|
|
|
|
/**
|
|
* Given an ast node, returns its string description based on a contiguous
|
|
* block full-line of comments preceding it.
|
|
*/
|
|
public function getDescription($node)
|
|
{
|
|
$loc = $node->loc;
|
|
if (!$loc || !$loc->startToken) {
|
|
return ;
|
|
}
|
|
$comments = [];
|
|
$minSpaces = null;
|
|
$token = $loc->startToken->prev;
|
|
while (
|
|
$token &&
|
|
$token->kind === Token::COMMENT &&
|
|
$token->next && $token->prev &&
|
|
$token->line + 1 === $token->next->line &&
|
|
$token->line !== $token->prev->line
|
|
) {
|
|
$value = $token->value;
|
|
$spaces = $this->leadingSpaces($value);
|
|
if ($minSpaces === null || $spaces < $minSpaces) {
|
|
$minSpaces = $spaces;
|
|
}
|
|
$comments[] = $value;
|
|
$token = $token->prev;
|
|
}
|
|
return implode("\n", array_map(function($comment) use ($minSpaces) {
|
|
return mb_substr(str_replace("\n", '', $comment), $minSpaces);
|
|
}, array_reverse($comments)));
|
|
}
|
|
|
|
/**
|
|
* A helper function to build a GraphQLSchema directly from a source
|
|
* document.
|
|
*
|
|
* @api
|
|
* @param DocumentNode|Source|string $source
|
|
* @param callable $typeConfigDecorator
|
|
* @return Schema
|
|
*/
|
|
public static function build($source, callable $typeConfigDecorator = null)
|
|
{
|
|
$doc = $source instanceof DocumentNode ? $source : Parser::parse($source);
|
|
return self::buildAST($doc, $typeConfigDecorator);
|
|
}
|
|
|
|
// Count the number of spaces on the starting side of a string.
|
|
private function leadingSpaces($str)
|
|
{
|
|
return strlen($str) - strlen(ltrim($str));
|
|
}
|
|
|
|
public function cannotExecuteSchema()
|
|
{
|
|
throw new Error(
|
|
'Generated Schema cannot use Interface or Union types for execution.'
|
|
);
|
|
}
|
|
|
|
}
|