Up to this point, the foreign function system did not allow using callbacks via Engine::runFunctionObject() until after Engine::execute() or Engine::run() (which calls Engine::execute()) had completed. My recent update changes that and makes recursive execution of opcodes easier.
For the second time, I’m changing the foreign function interface. (Actually, I already did.) It’s a rather sudden announcement, but since no one else besides me is using the language that I know of, I can get away with things like this.
One of the features I had been meaning to get around to for some time was improvements to the logging. The original system had one enum value per error. It gets quite tedious pretty quickly when you have to write out redundant messages with only a single word changed. Since it would be nice to have the messages be localized (i.e. translated into different languages), I used an enum, but obviously, I needed to shorten the process.
The result of my long evening of work was a rewrite of part of the logging system that resulting in an easily extensible interface for which I created pretty print logging (which you can see in the feature image of this post).
Recently, I utilized the serialization interface in Irrlicht to allow Copper to create GUIs. The code for this is part of my project “Cupric Bridge”. Also in this project are bindings that allow for callbacks from different types of GUI elements.
Branch 6, version 0.51 has a couple of important bug fixes.
An old bug in Copper that had gone under the radar for a while: The system functions “all” and “any” had been flipped in functionality. Each one was doing the other’s job. The bug was probably introduced during a rewrite of those functions.
CallbackWrapper was also fixed. The Copper callback is now disowned in the destructor so its lifetime is now correctly tied to the CallbackWrapper.
That recent change I made to speed up the processing also revealed a bug that occurred whenever a function scope was resized. This led to an overhaul of the variable storage system that may or may not have been necessary but will speed things up anyways because there are fewer function calls to make.
At the same time, I’ve decided to change some language semantics. Previously, when assigning data (such as a number) to a variable, the original function was retained, but the return was now a “constant return”. This meant that calling the function on the variable would return this “constant return” rather than the function, yet the members of the original function were still accessible. This “constant return” feature was originally designed to be a shortcut, but, ironically, it goes against the intended language design because this syntactic sugar was actually intended to be a shortcut for creating a new function. Now it will be.
Currently, I’ve been working on bindings for Copper with Irrlicht – a project I’ll probably write about later. I started to consider how much memory I was using by creating wrappings for every little thing. Naturally, I wanted things both small yet convenient. (It’s true that it would be better just to write a native GUI for Copper, but that’s asking alot out of myself.) I wanted the easiest way to have maximum control, but Irrlicht bindings send everything through a tunnel – i.e. when you want an attribute of something, you get all of the attributes. I could dump the ones I didn’t want, but what’s the point? Isn’t it faster to just load all of them into a Copper function?
That got me thinking… how much memory are Copper function-objects actually using?