Operate VM extension specification.

The Operate Lua VM can be easily extended, either with native Lua modules, or Elixir code that is added to the Lua VM as functions.

Examples

defmodule MyExtension do
  use Operate.VM.Extension
  alias Operate.VMr

  def extend(vm) do
    vm
    |> VM.set!("msg", "hello world")
    |> VM.exec!("function hello() return msg end")
    |> VM.set_function!("sum", fn _vm, args -> apply(__MODULE__, :sum, args) end)
  end

  def sum(a,b) do
    a + b
  end
end