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lib/absinthe/phase/document/arguments/normalize.ex
defmodule Absinthe.Phase.Document.Arguments.Normalize do
@moduledoc false
# Populate all arguments in the document with their provided values:
#
# - If a literal value is provided for an argument, set the `Argument.t`'s
# `normalized_value` field to that value.
# - If a variable is provided for an argument, set the `Argument.t`'s
# `normalized_value` to the reconciled value for the variable
# (Note: this requires the `Phase.Document.Variables` phase as a
# prerequisite).
#
# Note that no validation occurs in this phase.
use Absinthe.Phase
alias Absinthe.Blueprint
alias Absinthe.Blueprint.Input
@spec run(Blueprint.t(), Keyword.t()) :: {:ok, Blueprint.t()}
def run(input, _options \\ []) do
provided_values = get_provided_values(input)
node = Blueprint.prewalk(input, &handle_node(&1, provided_values))
{:ok, node}
end
@spec get_provided_values(Blueprint.t()) :: map
defp get_provided_values(input) do
case Blueprint.current_operation(input) do
nil -> %{}
operation -> operation.provided_values
end
end
defp handle_node(
%Input.RawValue{content: %Input.Variable{name: variable_name}} = node,
provided_values
) do
%Input.Value{
normalized: Map.get(provided_values, variable_name),
raw: node
}
end
# Argument not using a variable: Set provided value from the raw value
defp handle_node(%Input.RawValue{} = node, _provided_values) do
%Input.Value{
normalized: node.content,
raw: node
}
end
defp handle_node(node, _provided_values) do
node
end
end