Good books on parser theory? One of my Java projects is a fork of parboiled, and unlike, say, Antlr or JavaCC, parsers are generated at runtime. Grammars generated are Parsing Expression Grammars, or PEGs (I hear another term for them is "packrat").

While the runtime generation adds complexity (bytecode generation involved), another aspect relates to parser theory itself. As I have, unfortunately, no solid background in computer science, I lack theoretical knowledge to map existing code to existing concepts -- in this case, parsers.

Is there a good reference book on parsers which I can purchase and read, or even links on the Internet, which can help me build such a "mapping", accounting for my poor theoretical knowledge?
One book that I can recommend is D. Grune, C. J. H. Jacobs, Parsing Techniques: a Practical Guide.