On "Compilers"

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At Georgetown College, I took Compilers, a 400-level capstone course that scared the hell out of everyone. Everyone was like 10 students, because our CS department was that small. However, it was a required course. If you wanted to graduate witha B.S. in CompSci, then you had to have this course.

The prof was Bryan Crawley. Mister Crawley (insert Ozzy reference here). A strange guy, he was without a terminal degree, which made him the bootheel of the Math, Physics, and Computer Science department. The one thing this guy *loved* was compilers--he started introducing compiler-like concepts back in CS 111.

Anyway, the class was pretty boring, but it covered all the bases--using lex and regex's to tokenize, then using yacc to generate the Abstract Syntax Tree, and then writing the C code to do the code generation by traversing the tree. The language we were using was a fairly trivial stack-based affair, but it did demonstrate most of the problems with compillation. In particular, I thought 'backpatching' (a natural result of a recusive-descent parser) was going to make my brain melt.

But, eventually, we figured it out.

I do encourage everyone slogging through a decent CS program to seek out a compiler class, taught by a good prof.

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