Class: GraphQL::Execution::Interpreter::Runtime Private

Inherits:
Object
  • Object
show all
Defined in:
lib/graphql/execution/interpreter/runtime.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

I think it would be even better if we could somehow make continue_field not recursive. “Trampolining” it somehow.

Defined Under Namespace

Modules: GraphQLResult Classes: GraphQLResultArray, GraphQLResultHash

Constant Summary collapse

NO_ARGS =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

{}.freeze
HALT =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

Object.new

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(query:) ⇒ Runtime

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Runtime.



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 45

def initialize(query:)
  @query = query
  @dataloader = query.multiplex.dataloader
  @schema = query.schema
  @context = query.context
  @multiplex_context = query.multiplex.context
  @interpreter_context = @context.namespace(:interpreter)
  @response = GraphQLResultHash.new
  # A cache of { Class => { String => Schema::Field } }
  # Which assumes that MyObject.get_field("myField") will return the same field
  # during the lifetime of a query
  @fields_cache = Hash.new { |h, k| h[k] = {} }
  # { Class => Boolean }
  @lazy_cache = {}
end

Instance Attribute Details

#context ⇒ GraphQL::Query::Context (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 40

def context
  @context
end

#progress_path ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 176

def progress_path
  @progress_path
end

#query ⇒ GraphQL::Query (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 34

def query
  @query
end

#response ⇒ Hash (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Hash) 


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# File 'lib/graphql/execution/interpreter/runtime.rb', line 43

def response
  @response
end

#schema ⇒ Class<GraphQL::Schema> (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 37

def schema
  @schema
end

Instance Method Details

#after_lazy(lazy_obj, owner:, field:, path:, scoped_context:, owner_object:, arguments:, ast_node:, result:, result_name:, eager: false, trace: true, &block) ⇒ GraphQL::Execution::Lazy, Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns If loading object will be deferred, it’s a wrapper over it.

Parameters:

  • obj (Object) —

    Some user-returned value that may want to be batched

  • path (Array<String>)
  • field (GraphQL::Schema::Field)
  • eager (Boolean) (defaults to: false) —

    Set to true for mutation root fields only

  • trace (Boolean) (defaults to: true) —

    If false, don’t wrap this with field tracing

Returns:



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 591

def after_lazy(lazy_obj, owner:, field:, path:, scoped_context:, owner_object:, arguments:, ast_node:, result:, result_name:, eager: false, trace: true, &block)
  if lazy?(lazy_obj)
    lazy = GraphQL::Execution::Lazy.new(path: path, field: field) do
      set_all_interpreter_context(owner_object, field, arguments, path)
      context.scoped_context = scoped_context
      # Wrap the execution of _this_ method with tracing,
      # but don't wrap the continuation below
      inner_obj = begin
        query.with_error_handling do
          if trace
            query.trace("execute_field_lazy", {owner: owner, field: field, path: path, query: query, object: owner_object, arguments: arguments, ast_node: ast_node}) do
              schema.sync_lazy(lazy_obj)
            end
          else
            schema.sync_lazy(lazy_obj)
          end
        end
        rescue GraphQL::ExecutionError, GraphQL::UnauthorizedError => err
          err
      end
      yield(inner_obj)
    end

    if eager
      lazy.value
    else
      set_result(result, result_name, lazy)
      lazy
    end
  else
    set_all_interpreter_context(owner_object, field, arguments, path)
    yield(lazy_obj)
  end
end

#arguments(graphql_object, arg_owner, ast_node) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 626

def arguments(graphql_object, arg_owner, ast_node)
  if arg_owner.arguments_statically_coercible?
    query.arguments_for(ast_node, arg_owner)
  else
    # The arguments must be prepared in the context of the given object
    query.arguments_for(ast_node, arg_owner, parent_object: graphql_object)
  end
end

#authorized_new(type, value, context) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 664

def authorized_new(type, value, context)
  type.authorized_new(value, context)
end

#continue_field(path, value, owner_type, field, current_type, ast_node, next_selections, is_non_null, owner_object, arguments, result_name, selection_result) ⇒ Lazy, ...

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

The resolver for field returned value. Continue to execute the query, treating value as type (probably the return type of the field).

Use next_selections to resolve object fields, if there are any.

Location information from path and ast_node.

Returns:

  • (Lazy, Array, Hash, Object) —

    Lazy, Array, and Hash are all traversed to resolve lazy values later



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 448

def continue_field(path, value, owner_type, field, current_type, ast_node, next_selections, is_non_null, owner_object, arguments, result_name, selection_result) # rubocop:disable Metrics/ParameterLists
  if current_type.non_null?
    current_type = current_type.of_type
    is_non_null = true
  end

  case current_type.kind.name
  when "SCALAR", "ENUM"
    r = current_type.coerce_result(value, context)
    set_result(selection_result, result_name, r)
    r
  when "UNION", "INTERFACE"
    resolved_type_or_lazy, resolved_value = resolve_type(current_type, value, path)
    resolved_value ||= value

    after_lazy(resolved_type_or_lazy, owner: current_type, path: path, ast_node: ast_node, scoped_context: context.scoped_context, field: field, owner_object: owner_object, arguments: arguments, trace: false, result_name: result_name, result: selection_result) do |resolved_type|
      possible_types = query.possible_types(current_type)

      if !possible_types.include?(resolved_type)
        parent_type = field.owner_type
        err_class = current_type::UnresolvedTypeError
        type_error = err_class.new(resolved_value, field, parent_type, resolved_type, possible_types)
        schema.type_error(type_error, context)
        set_result(selection_result, result_name, nil)
        nil
      else
        continue_field(path, resolved_value, owner_type, field, resolved_type, ast_node, next_selections, is_non_null, owner_object, arguments, result_name, selection_result)
      end
    end
  when "OBJECT"
    object_proxy = begin
      authorized_new(current_type, value, context)
    rescue GraphQL::ExecutionError => err
      err
    end
    after_lazy(object_proxy, owner: current_type, path: path, ast_node: ast_node, scoped_context: context.scoped_context, field: field, owner_object: owner_object, arguments: arguments, trace: false, result_name: result_name, result: selection_result) do |inner_object|
      continue_value = continue_value(path, inner_object, owner_type, field, is_non_null, ast_node, result_name, selection_result)
      if HALT != continue_value
        response_hash = GraphQLResultHash.new
        response_hash.graphql_parent = selection_result
        response_hash.graphql_result_name = result_name
        set_result(selection_result, result_name, response_hash)
        gathered_selections = gather_selections(continue_value, current_type, next_selections)
        evaluate_selections(path, context.scoped_context, continue_value, current_type, false, gathered_selections, response_hash)
        response_hash
      end
    end
  when "LIST"
    inner_type = current_type.of_type
    response_list = GraphQLResultArray.new
    response_list.graphql_non_null_list_items = inner_type.non_null?
    response_list.graphql_parent = selection_result
    response_list.graphql_result_name = result_name
    set_result(selection_result, result_name, response_list)

    idx = 0
    scoped_context = context.scoped_context
    begin
      value.each do |inner_value|
        next_path = path.dup
        next_path << idx
        this_idx = idx
        next_path.freeze
        idx += 1
        # This will update `response_list` with the lazy
        after_lazy(inner_value, owner: inner_type, path: next_path, ast_node: ast_node, scoped_context: scoped_context, field: field, owner_object: owner_object, arguments: arguments, result_name: this_idx, result: response_list) do |inner_inner_value|
          continue_value = continue_value(next_path, inner_inner_value, owner_type, field, inner_type.non_null?, ast_node, this_idx, response_list)
          if HALT != continue_value
            continue_field(next_path, continue_value, owner_type, field, inner_type, ast_node, next_selections, false, owner_object, arguments, this_idx, response_list)
          end
        end
      end
    rescue NoMethodError => err
      # Ruby 2.2 doesn't have NoMethodError#receiver, can't check that one in this case. (It's been EOL since 2017.)
      if err.name == :each && (err.respond_to?(:receiver) ? err.receiver == value : true)
        # This happens when the GraphQL schema doesn't match the implementation. Help the dev debug.
        raise ListResultFailedError.new(value: value, field: field, path: path)
      else
        # This was some other NoMethodError -- let it bubble to reveal the real error.
        raise
      end
    end

    response_list
  else
    raise "Invariant: Unhandled type kind #{current_type.kind} (#{current_type})"
  end
end

#continue_value(path, value, parent_type, field, is_non_null, ast_node, result_name, selection_result) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

rubocop:disable Metrics/ParameterLists



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 375

def continue_value(path, value, parent_type, field, is_non_null, ast_node, result_name, selection_result) # rubocop:disable Metrics/ParameterLists
  case value
  when nil
    if is_non_null
      set_result(selection_result, result_name, nil) do
        # This block is called if `result_name` is not dead. (Maybe a previous invalid nil caused it be marked dead.)
        err = parent_type::InvalidNullError.new(parent_type, field, value)
        schema.type_error(err, context)
      end
    else
      set_result(selection_result, result_name, nil)
    end
    HALT
  when GraphQL::Error
    # Handle these cases inside a single `when`
    # to avoid the overhead of checking three different classes
    # every time.
    if value.is_a?(GraphQL::ExecutionError)
      if !dead_result?(selection_result)
        value.path ||= path
        value.ast_node ||= ast_node
        context.errors << value
        set_result(selection_result, result_name, nil)
      end
      HALT
    elsif value.is_a?(GraphQL::UnauthorizedError)
      # this hook might raise & crash, or it might return
      # a replacement value
      next_value = begin
        schema.unauthorized_object(value)
      rescue GraphQL::ExecutionError => err
        err
      end
      continue_value(path, next_value, parent_type, field, is_non_null, ast_node, result_name, selection_result)
    elsif GraphQL::Execution::Execute::SKIP == value
      HALT
    else
      # What could this actually _be_? Anyhow,
      # preserve the default behavior of doing nothing with it.
      value
    end
  when Array
    # It's an array full of execution errors; add them all.
    if value.any? && value.all? { |v| v.is_a?(GraphQL::ExecutionError) }
      if !dead_result?(selection_result)
        value.each_with_index do |error, index|
          error.ast_node ||= ast_node
          error.path ||= path + (field.type.list? ? [index] : [])
          context.errors << error
        end
        set_result(selection_result, result_name, nil)
      end
      HALT
    else
      value
    end
  when GraphQL::Execution::Interpreter::RawValue
    # Write raw value directly to the response without resolving nested objects
    set_result(selection_result, result_name, value.resolve)
    HALT
  else
    value
  end
end

#dead_result?(selection_result) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/graphql/execution/interpreter/runtime.rb', line 331

def dead_result?(selection_result)
  r = selection_result
  while r
    if r.graphql_dead
      return true
    else
      r = r.graphql_parent
    end
  end
  false
end

#delete_interpreter_context(key) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 642

def delete_interpreter_context(key)
  @interpreter_context.delete(key)
  @context.delete(key)
end

#directives_include?(node, graphql_object, parent_type) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Check Schema::Directive.include? for each directive that’s present

Returns:

  • (Boolean) 


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# File 'lib/graphql/execution/interpreter/runtime.rb', line 559

def directives_include?(node, graphql_object, parent_type)
  node.directives.each do |dir_node|
    dir_defn = schema.directives.fetch(dir_node.name).type_class || raise("Only class-based directives are supported (not #{dir_node.name.inspect})")
    args = arguments(graphql_object, dir_defn, dir_node).keyword_arguments
    if !dir_defn.include?(graphql_object, args, context)
      return false
    end
  end
  true
end

#evaluate_selection(path, result_name, field_ast_nodes_or_ast_node, scoped_context, owner_object, owner_type, is_eager_field, selections_result) ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 179

def evaluate_selection(path, result_name, field_ast_nodes_or_ast_node, scoped_context, owner_object, owner_type, is_eager_field, selections_result) # rubocop:disable Metrics/ParameterLists
  # As a performance optimization, the hash key will be a `Node` if
  # there's only one selection of the field. But if there are multiple
  # selections of the field, it will be an Array of nodes
  if field_ast_nodes_or_ast_node.is_a?(Array)
    field_ast_nodes = field_ast_nodes_or_ast_node
    ast_node = field_ast_nodes.first
  else
    field_ast_nodes = nil
    ast_node = field_ast_nodes_or_ast_node
  end
  field_name = ast_node.name
  field_defn = @fields_cache[owner_type][field_name] ||= owner_type.get_field(field_name)
  is_introspection = false
  if field_defn.nil?
    field_defn = if owner_type == schema.query && (entry_point_field = schema.introspection_system.entry_point(name: field_name))
      is_introspection = true
      entry_point_field
    elsif (dynamic_field = schema.introspection_system.dynamic_field(name: field_name))
      is_introspection = true
      dynamic_field
    else
      raise "Invariant: no field for #{owner_type}.#{field_name}"
    end
  end
  return_type = field_defn.type

  next_path = path.dup
  next_path << result_name
  next_path.freeze

  # This seems janky, but we need to know
  # the field's return type at this path in order
  # to propagate `null`
  if return_type.non_null?
    (selections_result.graphql_non_null_field_names ||= []).push(result_name)
  end
  # Set this before calling `run_with_directives`, so that the directive can have the latest path
  set_all_interpreter_context(nil, field_defn, nil, next_path)

  context.scoped_context = scoped_context
  object = owner_object

  if is_introspection
    object = authorized_new(field_defn.owner, object, context)
  end

  total_args_count = field_defn.arguments.size
  if total_args_count == 0
    kwarg_arguments = GraphQL::Execution::Interpreter::Arguments::EMPTY
    evaluate_selection_with_args(kwarg_arguments, field_defn, next_path, ast_node, field_ast_nodes, scoped_context, owner_type, object, is_eager_field, result_name, selections_result)
  else
    # TODO remove all arguments(...) usages?
    @query.arguments_cache.dataload_for(ast_node, field_defn, object) do |resolved_arguments|
      evaluate_selection_with_args(resolved_arguments, field_defn, next_path, ast_node, field_ast_nodes, scoped_context, owner_type, object, is_eager_field, result_name, selections_result)
    end
  end
end

#evaluate_selection_with_args(kwarg_arguments, field_defn, next_path, ast_node, field_ast_nodes, scoped_context, owner_type, object, is_eager_field, result_name, selection_result) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

rubocop:disable Metrics/ParameterLists



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 238

def evaluate_selection_with_args(kwarg_arguments, field_defn, next_path, ast_node, field_ast_nodes, scoped_context, owner_type, object, is_eager_field, result_name, selection_result)  # rubocop:disable Metrics/ParameterLists
  context.scoped_context = scoped_context
  return_type = field_defn.type
  after_lazy(kwarg_arguments, owner: owner_type, field: field_defn, path: next_path, ast_node: ast_node, scoped_context: context.scoped_context, owner_object: object, arguments: kwarg_arguments, result_name: result_name, result: selection_result) do |resolved_arguments|
    if resolved_arguments.is_a?(GraphQL::ExecutionError) || resolved_arguments.is_a?(GraphQL::UnauthorizedError)
      continue_value(next_path, resolved_arguments, owner_type, field_defn, return_type.non_null?, ast_node, result_name, selection_result)
      next
    end

    kwarg_arguments = if resolved_arguments.empty? && field_defn.extras.empty?
      # We can avoid allocating the `{ Symbol => Object }` hash in this case
      NO_ARGS
    else
      # Bundle up the extras, then make a new arguments instance
      # that includes the extras, too.
      extra_args = {}
      field_defn.extras.each do |extra|
        case extra
        when :ast_node
          extra_args[:ast_node] = ast_node
        when :execution_errors
          extra_args[:execution_errors] = ExecutionErrors.new(context, ast_node, next_path)
        when :path
          extra_args[:path] = next_path
        when :lookahead
          if !field_ast_nodes
            field_ast_nodes = [ast_node]
          end

          extra_args[:lookahead] = Execution::Lookahead.new(
            query: query,
            ast_nodes: field_ast_nodes,
            field: field_defn,
          )
        when :argument_details
          # Use this flag to tell Interpreter::Arguments to add itself
          # to the keyword args hash _before_ freezing everything.
          extra_args[:argument_details] = :__arguments_add_self
        when :irep_node
          # This is used by `__typename` in order to support the legacy runtime,
          # but it has no use here (and it's always `nil`).
          # Stop adding it here to avoid the overhead of `.merge_extras` below.
        else
          extra_args[extra] = field_defn.fetch_extra(extra, context)
        end
      end
      if extra_args.any?
        resolved_arguments = resolved_arguments.merge_extras(extra_args)
      end
      resolved_arguments.keyword_arguments
    end

    set_all_interpreter_context(nil, nil, kwarg_arguments, nil)

    # Optimize for the case that field is selected only once
    if field_ast_nodes.nil? || field_ast_nodes.size == 1
      next_selections = ast_node.selections
    else
      next_selections = []
      field_ast_nodes.each { |f| next_selections.concat(f.selections) }
    end

    field_result = resolve_with_directives(object, ast_node) do
      # Actually call the field resolver and capture the result
      app_result = begin
        query.with_error_handling do
          query.trace("execute_field", {owner: owner_type, field: field_defn, path: next_path, ast_node: ast_node, query: query, object: object, arguments: kwarg_arguments}) do
            field_defn.resolve(object, kwarg_arguments, context)
          end
        end
      rescue GraphQL::ExecutionError => err
        err
      end
      after_lazy(app_result, owner: owner_type, field: field_defn, path: next_path, ast_node: ast_node, scoped_context: context.scoped_context, owner_object: object, arguments: kwarg_arguments, result_name: result_name, result: selection_result) do |inner_result|
        continue_value = continue_value(next_path, inner_result, owner_type, field_defn, return_type.non_null?, ast_node, result_name, selection_result)
        if HALT != continue_value
          continue_field(next_path, continue_value, owner_type, field_defn, return_type, ast_node, next_selections, false, object, kwarg_arguments, result_name, selection_result)
        end
      end
    end

    # If this field is a root mutation field, immediately resolve
    # all of its child fields before moving on to the next root mutation field.
    # (Subselections of this mutation will still be resolved level-by-level.)
    if is_eager_field
      Interpreter::Resolve.resolve_all([field_result], @dataloader)
    else
      # Return this from `after_lazy` because it might be another lazy that needs to be resolved
      field_result
    end
  end
end

#evaluate_selections(path, scoped_context, owner_object, owner_type, is_eager_selection, gathered_selections, selections_result) ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 162

def evaluate_selections(path, scoped_context, owner_object, owner_type, is_eager_selection, gathered_selections, selections_result)
  set_all_interpreter_context(owner_object, nil, nil, path)

  gathered_selections.each do |result_name, field_ast_nodes_or_ast_node|
    @dataloader.append_job {
      evaluate_selection(
        path, result_name, field_ast_nodes_or_ast_node, scoped_context, owner_object, owner_type, is_eager_selection, selections_result
      )
    }
  end

  nil
end

#gather_selections(owner_object, owner_type, selections, selections_by_name = {}) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 104

def gather_selections(owner_object, owner_type, selections, selections_by_name = {})
  selections.each do |node|
    # Skip gathering this if the directive says so
    if !directives_include?(node, owner_object, owner_type)
      next
    end

    case node
    when GraphQL::Language::Nodes::Field
      response_key = node.alias || node.name
      selections = selections_by_name[response_key]
      # if there was already a selection of this field,
      # use an array to hold all selections,
      # otherise, use the single node to represent the selection
      if selections
        # This field was already selected at least once,
        # add this node to the list of selections
        s = Array(selections)
        s << node
        selections_by_name[response_key] = s
      else
        # No selection was found for this field yet
        selections_by_name[response_key] = node
      end
    when GraphQL::Language::Nodes::InlineFragment
      if node.type
        type_defn = schema.get_type(node.type.name)
        # Faster than .map{}.include?()
        query.warden.possible_types(type_defn).each do |t|
          if t == owner_type
            gather_selections(owner_object, owner_type, node.selections, selections_by_name)
            break
          end
        end
      else
        # it's an untyped fragment, definitely continue
        gather_selections(owner_object, owner_type, node.selections, selections_by_name)
      end
    when GraphQL::Language::Nodes::FragmentSpread
      fragment_def = query.fragments[node.name]
      type_defn = schema.get_type(fragment_def.type.name)
      possible_types = query.warden.possible_types(type_defn)
      possible_types.each do |t|
        if t == owner_type
          gather_selections(owner_object, owner_type, fragment_def.selections, selections_by_name)
          break
        end
      end
    else
      raise "Invariant: unexpected selection class: #{node.class}"
    end
  end
  selections_by_name
end

#inspect ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 61

def inspect
  "#<#{self.class.name} response=#{@response.inspect}>"
end

#lazy?(object) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/graphql/execution/interpreter/runtime.rb', line 668

def lazy?(object)
  @lazy_cache.fetch(object.class) {
    @lazy_cache[object.class] = @schema.lazy?(object)
  }
end

#resolve_type(type, value, path) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 647

def resolve_type(type, value, path)
  trace_payload = { context: context, type: type, object: value, path: path }
  resolved_type, resolved_value = query.trace("resolve_type", trace_payload) do
    query.resolve_type(type, value)
  end

  if lazy?(resolved_type)
    GraphQL::Execution::Lazy.new do
      query.trace("resolve_type_lazy", trace_payload) do
        schema.sync_lazy(resolved_type)
      end
    end
  else
    [resolved_type, resolved_value]
  end
end

#resolve_with_directives(object, ast_node, &block) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 537

def resolve_with_directives(object, ast_node, &block)
  return yield if ast_node.directives.empty?
  run_directive(object, ast_node, 0, &block)
end

#run_directive(object, ast_node, idx, &block) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 542

def run_directive(object, ast_node, idx, &block)
  dir_node = ast_node.directives[idx]
  if !dir_node
    yield
  else
    dir_defn = schema.directives.fetch(dir_node.name)
    if !dir_defn.is_a?(Class)
      dir_defn = dir_defn.type_class || raise("Only class-based directives are supported (not `@#{dir_node.name}`)")
    end
    dir_args = arguments(nil, dir_defn, dir_node).keyword_arguments
    dir_defn.resolve(object, dir_args, context) do
      run_directive(object, ast_node, idx + 1, &block)
    end
  end
end

#run_eager ⇒ void

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

This method returns an undefined value.

This begins the execution. Some deferred work might be stored up in lazies.



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 68

def run_eager
  root_operation = query.selected_operation
  root_op_type = root_operation.operation_type || "query"
  root_type = schema.root_type_for_operation(root_op_type)
  path = []
  set_all_interpreter_context(query.root_value, nil, nil, path)
  object_proxy = authorized_new(root_type, query.root_value, context)
  object_proxy = schema.sync_lazy(object_proxy)

  if object_proxy.nil?
    # Root .authorized? returned false.
    @response = nil
  else
    resolve_with_directives(object_proxy, root_operation) do # execute query level directives
      gathered_selections = gather_selections(object_proxy, root_type, root_operation.selections)
      # Make the first fiber which will begin execution
      @dataloader.append_job {
        evaluate_selections(
          path,
          context.scoped_context,
          object_proxy,
          root_type,
          root_op_type == "mutation",
          gathered_selections,
          @response,
        )
      }
    end
  end
  delete_interpreter_context(:current_path)
  delete_interpreter_context(:current_field)
  delete_interpreter_context(:current_object)
  delete_interpreter_context(:current_arguments)
  nil
end

#set_all_interpreter_context(object, field, arguments, path) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 570

def set_all_interpreter_context(object, field, arguments, path)
  if object
    @context[:current_object] = @interpreter_context[:current_object] = object
  end
  if field
    @context[:current_field] = @interpreter_context[:current_field] = field
  end
  if arguments
    @context[:current_arguments] = @interpreter_context[:current_arguments] = arguments
  end
  if path
    @context[:current_path] = @interpreter_context[:current_path] = path
  end
end

#set_interpreter_context(key, value) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Set this pair in the Query context, but also in the interpeter namespace, for compatibility.



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 637

def set_interpreter_context(key, value)
  @interpreter_context[key] = value
  @context[key] = value
end

#set_result(selection_result, result_name, value) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/graphql/execution/interpreter/runtime.rb', line 343

def set_result(selection_result, result_name, value)
  if !dead_result?(selection_result)
    if value.nil? &&
        ( # there are two conditions under which `nil` is not allowed in the response:
          (selection_result.graphql_non_null_list_items) || # this value would be written into a list that doesn't allow nils
          ((nn = selection_result.graphql_non_null_field_names) && nn.include?(result_name)) # this value would be written into a field that doesn't allow nils
        )
      # This is an invalid nil that should be propagated
      # One caller of this method passes a block,
      # namely when application code returns a `nil` to GraphQL and it doesn't belong there.
      # The other possibility for reaching here is when a field returns an ExecutionError, so we write
      # `nil` to the response, not knowing whether it's an invalid `nil` or not.
      # (And in that case, we don't have to call the schema's handler, since it's not a bug in the application.)
      # TODO the code is trying to tell me something.
      yield if block_given?
      parent = selection_result.graphql_parent
      name_in_parent = selection_result.graphql_result_name
      if parent.nil? # This is a top-level result hash
        @response = nil
      else
        set_result(parent, name_in_parent, nil)
        # This is odd, but it's how it used to work. Even if `parent` _would_ accept
        # a `nil`, it's marked dead. TODO: check the spec, is there a reason for this?
        parent.graphql_dead = true
      end
    else
      selection_result[result_name] = value
    end
  end
end