Over the past couple weeks, I’ve been working on refining and testing my RTTI generation and the scripting system I’ve been building on top of it, which I’ve decided to call RTTI Script. I think I’m finally starting to get something ready for public consumption. I set up a Google Code repository this morning for RTTI Script, but so far all it contains is the RTTI generation code. The actual compiler and script executor still need some work. Continue reading ‘RTTI Generation code now available’ »
Archive for the ‘Class Creation’ Category.
A few years back, I ran across this post by Hallvard Vassbotn. (It’s a shame he stopped blogging, because he always had some very interesting stuff about the technical details of how stuff in Delphi works.) At the bottom was a paragraph that really fascinated me:
On a more technical level it suffices to say that they use custom and extremely compact and fast data structures, tricks and hacks to be able to represent millions and millions of objects within the constraints of a 32-bit Windows system. Throw in the use of Physical Address Extensions, storing per-class information in “virtual” class vars to reduce object instance size, creation of classes and their VMTs dynamically at runtime (!!), pointer packing, multithreading, the list just goes on and on.
One of the biggest complaints about the extended RTTI introduced in Delphi 2010 is the way it adds so much to the size of your EXE. Well, in a recent StackOverflow answer, Barry Kelly hinted that the format of the basic RTTI structures in TypInfo.pas are “more likely to change from version to version now that it has a much higher level abstraction in the Rtti unit.” Continue reading ‘Smaller, cleaner RTTI coming?’ »
NOTE: The download link in the original version of this post got mangled by WordPress. It’s been corrected now.
A couple weeks ago, I gave a presentation at the CodeRage 4 online conference about dynamic class creation at runtime in Delphi. The replays were just posted yesterday at Embarcadero’s CodeRage site. Continue reading ‘Dynamic class creation’ »