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Is there any such thing as code that operates on the codebase, like a compiler, but instead of creating machine code, it just creates modified human readable code? This is hard to explain, so let me give an example. Suppose we have the following codebase:



Now, we apply the following command to the codebase:



And the result is:



Of course, I realize that IDEs can do this (to a certain extent), but I was just wondering if anyone ever developed an actual rigorous language for this kind of thing.

[ June 15, 2008: Message edited by: Wally Flint ]
[ June 15, 2008: Message edited by: Wally Flint ]
 
Don't get me started about those stupid light bulbs.
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