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Elixir data model framework library

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rivet lib rivet template evaluate.ex
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lib/rivet/template/evaluate.ex 

defmodule Rivet.Template.Evaluate do

  @moduledoc false

  def evaluate(list, opts, sections) when is_list(list),

    do: Enum.join(list) |> evaluate(opts, sections)



  def evaluate(string, %{imports: imports, assigns: assigns}, sections) do

    try do

      {:ok, EEx.eval_string(imports <> string, assigns: Map.merge(assigns, sections))}

    rescue

      err ->

        {:error, {err, __STACKTRACE__}}

    end

  end



  @always_imports ["Transmogrify", "Transmogrify.As"]

  def preparse_imports(%{imports: imports} = opts) when is_list(imports) do

    imports =

      MapSet.new(@always_imports ++ imports)

      |> MapSet.to_list()

      |> Enum.map(&"import #{&1}")

      |> Enum.join(";")



    %{opts | imports: "<% #{imports} %>"}

  end

end