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9282 :: advanced integration with lua

• severak (orginal) [2022-07-06T01:07:10+02:00] view original

  Hi, anyone tried some advanced integration os nim code with lua?

  I started some experiments with calling nim functions from lua and lua function from nim. While lua->nim works well, I was unable to save reference to lua function using luaL_ref (respective reference as it's called in nim binding). I was able to call lua function by it's name.

  Also I ran into this issue which I solved by modifying source code to:

  
    else:
      const
        NAME* = "lua5.1.dll"
        LIB_NAME* = "lua5.1.dll"
  Run

  and including proper DLL file to my program folder. I think that defining DLL name as LIB_NAME* = "lua(|5.1|5.0).dll" is error.

  Also, it seems there are multiple lua bindings - official one, luna wrapper, nimLua (which looks like overkill for me) and even one called lunacy which looks like alternative one... Which one of these is best?

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• severak (orginal) [2022-07-06T14:25:05+02:00] view original

  I also find out that there might be some problem due to lua's use of longjmp with interfere with Nim's call stack.

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• mratsim (orginal) [2022-07-07T06:56:36+02:00] view original

  You might be able to workaround this by using --exceptions:gotos or compiling for C++ as Nim uses longjmp for exceptions by default (except in C++ mode).

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