railt/graphql

/**
 * --------------------------------------------------------------------------
 *  GraphQL SDL Interfaces
 * --------------------------------------------------------------------------
 *
 * GraphQL interfaces represent a list of named fields and their arguments.
 * GraphQL objects can then implement these interfaces which requires that
 * the object type will define all fields defined by those interfaces.
 *
 * @see https://facebook.github.io/graphql/June2018/#sec-Interfaces
 *
 */

InterfaceTypeDefinition -> {
    return new Stmt\Definition\InterfaceTypeDefinitionNode(
        $children[1],
        $children[0],
        $children[2]->getArrayCopy(),
        $children[4]->getArrayCopy(),
        $children[3]->getArrayCopy(),
    );
}
  : Description()
    InterfaceTypeDefinitionExceptDescription()
  ;

InterfaceTypeDefinitionExceptDescription
  : InterfaceTypeDefinitionHead()
    OptionalInterfaceTypeDefinitionBody()
  ;

InterfaceTypeDefinitionHead
  : ::T_INTERFACE:: Name()
    OptionalImplementsInterfaces()
    Directives()
  ;

OptionalInterfaceTypeDefinitionBody -> {
    return $children === [] ? new \ArrayObject() : $children;
}
  : ObjectTypeDefinitionBody()?
  ;

InterfaceTypeDefinitionBody
  : ::T_BRACE_OPEN::
      FieldDefinitions()?
    ::T_BRACE_CLOSE::
  ;

//
// Implements
//

OptionalImplementsInterfaces -> { return new \ArrayObject($children); }
  : ImplementsInterfaces()?
  ;

ImplementsInterfaces
  : ::T_IMPLEMENTS::
    ImplementsInterfacesDelimiter()? NamedType()
    ( ImplementsInterfacesDelimiter() NamedType() )*
  ;

ImplementsInterfacesDelimiter
  : ::T_COMMA::
  | ::T_AND::
  ;