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pantagruel

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A program specification language with a defined syntax, and ad-hoc semantics.

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pantagruel lib bool_alg macros.ex
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lib/bool_alg/macros.ex 

defmodule BoolAlg.Macros do

  defmacro deftrue(operation, result, result2 \\ nil) do

    result2 = result2 || result



    quote do

      defp reduce(%__MODULE__{op: unquote(operation), x: true, y: var!(q)}), do: unquote(result)

      defp reduce(%__MODULE__{op: unquote(operation), x: var!(q), y: true}), do: unquote(result2)

    end

  end



  defmacro deffalse(operation, result, result2 \\ nil) do

    result2 = result2 || result



    quote do

      defp reduce(%__MODULE__{op: unquote(operation), x: false, y: var!(q)}), do: unquote(result)

      defp reduce(%__MODULE__{op: unquote(operation), x: var!(q), y: false}), do: unquote(result2)

    end

  end

end