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POIRC function dilemma
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copied!<p>[EDIT] Sorry about the title being off. I was thinking of a different problem I was having, and accidentally crossed the two.</p> <p>Hi everyone, I'm writing my IRC bot skeleton in Python currently.</p> <p>To explain a couple things before I ask my question, I am writing a IRC bot complete with a plug-in system that will receive signals (i.e. when a message is received, a person was seen joining a channel, ...), and to call these functions contained in the plug-in, I will be using a helper method, i.e. if we saw a message, call <code>sawMessage</code>. <code>sawMessage</code> will locate which plug-ins want to handle messages, using a <code>PluginManager</code> class, etc. I have the whole system thought out.</p> <p>I also have a function for each IRC action, i.e. "doJoin", "doPart", etc. so that plug-ins can call these without me exposing my socket connection to the plug-ins directly. -- Should these functions automatically call the appropriate <code>sawMessage</code>, <code>sawJoin</code>, etc. ? Or should it be up to the plug-in to call <code>sawMessage</code> after calling <code>doMessage</code>? The reason I am asking is because if <code>doMessage</code> calls <code>sawMessage</code>, and <code>sawMessage</code> processes something that calls <code>doMessage</code>, it can end up recursing a lot before unwinding the stack.</p> <p>The drawbacks of making the plug-in responsible for calling <code>sawMessage</code> to notify the other plug-ins is that the plug-in would have a choice of NOT notifying the other plug-ins, and also that if the plug-in DOES call the <code>sawMessage</code> function, the recursion issue could pop right back up.</p> <p>I'm not sure how to resolve this. It seems like good practice to make <code>doMessage</code> automatically call <code>sawMessage</code> to notify other plug-ins, but there is always the possibility of a stack overflow due to recursion if the plug-in is not designed properly (i.e. not to respond to it's own messages), but if the plug-in has to call <code>sawMessage</code> anyway, the same issue is there.</p> <p>Got any thoughts/opinions on this? I know it's not a straight-out question/answer, but I can't decide what to do with this. Ordinarily, if I was just writing a small bot for my own usage, I wouldn't care about a possible recursion problem. However, I am writing this for the purpose of distribution (I want this to be the next HUGE bot, just like every other IRC bot developer :D ) and I want it made properly.</p> <p>Thanks!</p>

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