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absinthe lib absinthe blueprint document operation.ex
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lib/absinthe/blueprint/document/operation.ex 

defmodule Absinthe.Blueprint.Document.Operation do

  @moduledoc false



  alias Absinthe.Blueprint



  @enforce_keys [:name, :type]

  defstruct [

    :name,

    :type,

    current: false,

    selections: [],

    directives: [],

    variable_definitions: [],

    variable_uses: [],

    fragment_uses: [],

    source_location: nil,

    # Populated by phases

    flags: %{},

    schema_node: nil,

    complexity: nil,

    provided_values: %{},

    errors: []

  ]



  @type t :: %__MODULE__{

          name: nil | String.t(),

          type: :query | :mutation | :subscription,

          current: boolean,

          directives: [Blueprint.Directive.t()],

          selections: [Blueprint.Document.selection_t()],

          variable_definitions: [Blueprint.Document.VariableDefinition.t()],

          variable_uses: [Blueprint.Input.Variable.Use.t()],

          fragment_uses: [Blueprint.Document.Fragment.Named.Use.t()],

          source_location: nil | Blueprint.SourceLocation.t(),

          schema_node: nil | Absinthe.Type.Object.t(),

          complexity: nil | non_neg_integer,

          provided_values: %{String.t() => nil | Blueprint.Input.t()},

          flags: Blueprint.flags_t(),

          errors: [Absinthe.Phase.Error.t()]

        }



  @doc """

  Determine if a fragment or variable is used by an operation.

  """

  @spec uses?(t, Blueprint.node_t()) :: boolean

  def uses?(op, %Blueprint.Document.Fragment.Named{} = node) do

    do_uses?(op.fragment_uses, node)

  end



  def uses?(op, %Blueprint.Input.Variable{} = node) do

    do_uses?(op.variable_uses, node)

  end



  # Whether a node is marked as used in a use list

  @spec do_uses?([Blueprint.use_t()], Blueprint.node_t()) :: boolean

  defp do_uses?(list, node) do

    Enum.find(list, &(&1.name == node.name))

  end

end