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absinthe lib absinthe blueprint directive.ex
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lib/absinthe/blueprint/directive.ex

defmodule Absinthe.Blueprint.Directive do
@moduledoc false
alias Absinthe.{Blueprint, Phase}
@enforce_keys [:name]
defstruct [
:name,
arguments: [],
# When part of a Document
source_location: nil,
# Added by phases
schema_node: nil,
flags: %{},
errors: []
]
@type t :: %__MODULE__{
name: String.t(),
arguments: [Blueprint.Input.Argument.t()],
source_location: nil | Blueprint.SourceLocation.t(),
schema_node: nil | Absinthe.Type.Directive.t(),
flags: Blueprint.flags_t(),
errors: [Phase.Error.t()]
}
@spec expand(t, Blueprint.node_t()) :: {t, map}
def expand(%__MODULE__{schema_node: nil}, node) do
node
end
def expand(%__MODULE__{schema_node: type} = directive, node) do
args = Blueprint.Input.Argument.value_map(directive.arguments)
Absinthe.Type.function(type, :expand).(args, node)
end
@doc """
Determine the placement name for a given Blueprint node
"""
@spec placement(Blueprint.node_t()) :: nil | atom
def placement(%Blueprint.Document.Operation{type: type}), do: type
def placement(%Blueprint.Document.Field{}), do: :field
def placement(%Blueprint.Document.Fragment.Named{}), do: :fragment_definition
def placement(%Blueprint.Document.Fragment.Spread{}), do: :fragment_spread
def placement(%Blueprint.Document.Fragment.Inline{}), do: :inline_fragment
def placement(%Blueprint.Document.Operation{}), do: :operation_definition
def placement(%Blueprint.Schema.SchemaDefinition{}), do: :schema
def placement(%Blueprint.Schema.ScalarTypeDefinition{}), do: :scalar
def placement(%Blueprint.Schema.ObjectTypeDefinition{}), do: :object
def placement(%Blueprint.Schema.FieldDefinition{}), do: :field_definition
def placement(%Blueprint.Schema.InterfaceTypeDefinition{}), do: :interface
def placement(%Blueprint.Schema.UnionTypeDefinition{}), do: :union
def placement(%Blueprint.Schema.EnumTypeDefinition{}), do: :enum
def placement(%Blueprint.Schema.EnumValueDefinition{}), do: :enum_value
def placement(%Blueprint.Schema.InputObjectTypeDefinition{}), do: :input_object
def placement(%Blueprint.Schema.InputValueDefinition{placement: placement}), do: placement
end