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liquex

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Liquid template parser for Elixir. 100% compatibility with the Liquid gem for Ruby.

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liquex lib liquex render.ex
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lib/liquex/render.ex 

defmodule Liquex.Render do

  @moduledoc false



  alias Liquex.Context



  @callback render({atom, any}, Context.t()) :: {any, Context.t()} | false



  @spec render(iolist(), Liquex.document_t(), Context.t()) :: {iolist(), Context.t()}

  @doc """

  Renders a Liquid AST `document` into an `iolist`



  A `context` is given to handle temporary contextual information for

  this render.

  """

  def render(content, [], context),

    do: {content |> Enum.reverse(), context}



  def render(content, [tag | tail], %{render_module: custom_module} = context) do

    [

      custom_module,

      Liquex.Render.Text,

      Liquex.Render.Object,

      Liquex.Render.ControlFlow,

      Liquex.Render.Variable,

      Liquex.Render.Iteration

    ]

    |> do_render(tag, context)

    |> case do

      {result, context} ->

        [result | content]

        |> render(tail, context)



      _ ->

        raise "No tag renderer found"

    end

  end



  defp do_render(modules, tag, context) do

    modules

    |> Enum.reject(&is_nil/1)

    |> Enum.find_value(& &1.render(tag, context))

  end

end