Class: Tapioca::Dsl::Compilers::FragmentResponseTypes

Inherits:
Compiler
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/tapioca/dsl/compilers/fragment_response_types.rb

Overview

Declares the response objects the query methods return, so that client.get_ledger(...).data.ledger.name typechecks.

graphql-client builds those objects at runtime from anonymous classes whose fields are served by method_missing, so there is nothing to reflect on. The shape is instead derived statically from each operation's selection set and the pinned Schema -- the same two inputs graphql-client itself uses, which is what makes the declared types agree with the runtime.

In particular graphql-client refuses at runtime to read a field the operation did not select (ImplicitlyFetchedFieldError), so a type derived from the selection set cannot promise more than the runtime allows.

Emitted under FragmentClient::Responses::<Operation>, one nested class per selection level.

Constant Summary collapse

ConstantType = 
type_member { { fixed: T.class_of(FragmentClient) } }
SCALARS =

Scalar names this Schema uses, mapped for GraphqlSorbetTypes.

T.let(
  {
    'String' => '::String', 'ID' => '::String', 'SafeString' => '::String',
    'ParameterizedString' => '::String', 'Date' => '::String',
    'DateTime' => '::String', 'FirstMoment' => '::String',
    'LastMoment' => '::String', 'Period' => '::String',
    'PeriodFilter' => '::String', 'UTCOffset' => '::String',
    'Int96' => '::String', 'Int' => '::Integer', 'Float' => '::Float',
    'Boolean' => 'T::Boolean', 'JSON' => 'T.untyped', 'Parameters' => 'T.untyped'
  }.freeze,
  T::Hash[String, String]
)
RESPONSES_NAMESPACE = 
'FragmentClient::Responses'

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.gather_constants ⇒ Object 



52
53
54
 
# File 'lib/tapioca/dsl/compilers/fragment_response_types.rb', line 52

def gather_constants
  [FragmentClient]
end

Instance Method Details

#decorate ⇒ Object 



58
59
60
61
62
63
64
65
66
67
 
# File 'lib/tapioca/dsl/compilers/fragment_response_types.rb', line 58

def decorate
  operations = FragmentGraphQl.operations
  return if operations.empty?

  root.create_module(RESPONSES_NAMESPACE) do |namespace|
    operations.keys.sort.each do |name|
      declare_operation(namespace, name, T.must(operations[name]))
    end
  end
end