Robust Lua error handling and quarantining #33
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Functions in the runtime namespace provide a robust way to catch and handle errors triggered by Lua scripts. In future all call to Lua will go through this API, rather than low-level C API. The new API can unwind Lua call stack and make a reasonable guess for which script is responsible for triggering an error and quarantine it automatically. For now, it is mostly in proof-of-concept state, handling errors at script loading stage and in do_often() code. Some functionality is missing and reporting errors to user is done through Dev Console only. I also did a bunch of refactoring to the code I had to change, hopefully making it easier to understand and use more modern C++.
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I sure wish I could better understood what you are trying to do so we could improve the error handling. Every once in a while I look at your code but I am afraid it just goes over my head. |
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This code is in a very draft stage, I'm opening this PR so that you could see the direction I'm going for.
In short my goal can be summarised as
LuaIsRunningflag should be used in very few places. The rest should use Lua's native error handling or C++ exceptions for handling errors.