Excellent Rewrite

I just wanted to say that just as ANTLR 4 is a step change from ANTLR 3, this book is a compete rewrite of the original book. This reads as a much more coherent scheme of work to learn to use ANTLR – the original was a bit rough and ready in places. So I recommend this book to anyone who plans to use ANTLR.

Question: Does Languages Patterns need updating now? For example I would be interested in understanding if “Parse Trees” are equivalent to ASTs – practically I guess yes, but formally?

Thanks

Adrian

Hi Adrian. Any chance I could get you to post something at Amazon like that? ;)

Yes, Lang Impl Patterns would need an update as it talks about ASTs not parse trees, which are different. Also, uses a tree grammar not visitors and listeners. One way for me to solve this problem is to reimplement all of those examples from that book using v4.

Ter

Done (amazon.co.uk) – I have some suggestions for ANTLR 4 itself … but will post on the ANTLR web site (so I am hoping for preferential answers – LOL)