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<?php |
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namespace Digia\GraphQL\Util; |
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use Digia\GraphQL\Error\ConversionException; |
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use Digia\GraphQL\Error\InvalidTypeException; |
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use Digia\GraphQL\Error\InvariantException; |
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use Digia\GraphQL\Language\Node\ListTypeNode; |
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use Digia\GraphQL\Language\Node\NamedTypeNode; |
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use Digia\GraphQL\Language\Node\NonNullTypeNode; |
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use Digia\GraphQL\Language\Node\TypeNodeInterface; |
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use Digia\GraphQL\Schema\SchemaInterface; |
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use Digia\GraphQL\Type\Definition\TypeInterface; |
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use function Digia\GraphQL\Type\newList; |
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use function Digia\GraphQL\Type\newNonNull; |
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class TypeASTConverter |
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{ |
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/** |
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* Given a Schema and an AST node describing a type, return a GraphQLType |
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* definition which applies to that type. For example, if provided the parsed |
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* AST node for `[User]`, a GraphQLList instance will be returned, containing |
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* the type called "User" found in the schema. If a type called "User" is not |
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* found in the schema, then undefined will be returned. |
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* |
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* @param SchemaInterface $schema |
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* @param TypeNodeInterface $typeNode |
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* @return TypeInterface|null |
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* @throws InvariantException |
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* @throws ConversionException |
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*/ |
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public function convert(SchemaInterface $schema, TypeNodeInterface $typeNode): ?TypeInterface |
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{ |
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$innerType = null; |
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if ($typeNode instanceof ListTypeNode) { |
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$innerType = $this->convert($schema, $typeNode->getType()); |
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return null !== $innerType ? newList($innerType) : null; |
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} |
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if ($typeNode instanceof NonNullTypeNode) { |
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$innerType = $this->convert($schema, $typeNode->getType()); |
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return null !== $innerType ? newNonNull($innerType) : null; |
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} |
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if ($typeNode instanceof NamedTypeNode) { |
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return $schema->getType($typeNode->getNameValue()); |
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} |
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throw new ConversionException(sprintf('Unexpected type kind: %s', $typeNode->getKind())); |
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} |
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} |
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digiaonline /
graphql-php
