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From time to time I find myself revisiting this thread: "Writing parsers like it is 2017"[0]. In particular I love a Rust parser generator called LALRPOP and i
by kjeetgill 8y ago
From time to time I find myself revisiting this thread: "Writing parsers like it is 2017"[0].
In particular I love a Rust parser generator called LALRPOP and it's emphasis on diagnosing ambiguous grammars [1].
> What I’ve tried to do now in LALRPOP is to do that clever thinking for you, and instead present the error message in terms of your grammar. Perhaps even more importantly, I’ve also tried to identify common beginner problems and suggest solutions.
They work out a fairly deep example with error guidance in ambiguous grammars in that post.
[0]: https://news.ycombinator.com/item?id=15016061 https://news.ycombinator.com/item?id=15016061
[1]: http://smallcultfollowing.com/babysteps/blog/2016/03/02/nice-errors-in-lalrpop/ http://smallcultfollowing.com/babysteps/blog/2016/03/02/nice...