[xtracto]

I am not an expert in compilers, but in my undergrad compiler's class one of the things I remember the most are parsers (such as LALR). I remember having a great time implementing different types of parsers:

http://en.wikipedia.org/wiki/Category:Parsing_algorithms

I think the dragon book is the absolute reference for learning compilers:

http://www.amazon.com/Compilers-Principles-Techniques-Alfred...